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gerrit-public.fairphone.software / kernel / msm-4.19 / 91dc985c5e51af7036c1ccf9cea1b05662c96791 / . / drivers / video / omap2 / dss / dispc.c
blob: b43477a5fae869e5e8981faaea48f51c15827e49 [file] [log] [blame]
/*
* linux/drivers/video/omap2/dss/dispc.c
*
* Copyright (C) 2009 Nokia Corporation
* Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
*
* Some code and ideas taken from drivers/video/omap/ driver
* by Imre Deak.
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 as published by
* the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*/
#define DSS_SUBSYS_NAME "DISPC"
#include <linux/kernel.h>
#include <linux/dma-mapping.h>
#include <linux/vmalloc.h>
#include <linux/export.h>
#include <linux/clk.h>
#include <linux/io.h>
#include <linux/jiffies.h>
#include <linux/seq_file.h>
#include <linux/delay.h>
#include <linux/workqueue.h>
#include <linux/hardirq.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <linux/pm_runtime.h>
#include <plat/cpu.h>
#include <video/omapdss.h>
#include "dss.h"
#include "dss_features.h"
#include "dispc.h"
/* DISPC */
#define DISPC_SZ_REGS SZ_4K
#define DISPC_IRQ_MASK_ERROR (DISPC_IRQ_GFX_FIFO_UNDERFLOW | \
DISPC_IRQ_OCP_ERR | \
DISPC_IRQ_VID1_FIFO_UNDERFLOW | \
DISPC_IRQ_VID2_FIFO_UNDERFLOW | \
DISPC_IRQ_SYNC_LOST | \
DISPC_IRQ_SYNC_LOST_DIGIT)
#define DISPC_MAX_NR_ISRS 8
struct omap_dispc_isr_data {
omap_dispc_isr_t isr;
void *arg;
u32 mask;
};
enum omap_burst_size {
BURST_SIZE_X2 = 0,
BURST_SIZE_X4 = 1,
BURST_SIZE_X8 = 2,
};
#define REG_GET(idx, start, end) \
FLD_GET(dispc_read_reg(idx), start, end)
#define REG_FLD_MOD(idx, val, start, end) \
dispc_write_reg(idx, FLD_MOD(dispc_read_reg(idx), val, start, end))
struct dispc_irq_stats {
unsigned long last_reset;
unsigned irq_count;
unsigned irqs[32];
};
struct dispc_features {
u8 sw_start;
u8 fp_start;
u8 bp_start;
u16 sw_max;
u16 vp_max;
u16 hp_max;
int (*calc_scaling) (enum omap_plane plane,
const struct omap_video_timings *mgr_timings,
u16 width, u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps,
int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
u16 pos_x, unsigned long *core_clk, bool mem_to_mem);
unsigned long (*calc_core_clk) (enum omap_plane plane,
u16 width, u16 height, u16 out_width, u16 out_height,
bool mem_to_mem);
u8 num_fifos;
/* swap GFX & WB fifos */
bool gfx_fifo_workaround:1;
};
#define DISPC_MAX_NR_FIFOS 5
static struct {
struct platform_device *pdev;
void __iomem *base;
int ctx_loss_cnt;
int irq;
struct clk *dss_clk;
u32 fifo_size[DISPC_MAX_NR_FIFOS];
/* maps which plane is using a fifo. fifo-id -> plane-id */
int fifo_assignment[DISPC_MAX_NR_FIFOS];
spinlock_t irq_lock;
u32 irq_error_mask;
struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
u32 error_irqs;
struct work_struct error_work;
bool ctx_valid;
u32 ctx[DISPC_SZ_REGS / sizeof(u32)];
const struct dispc_features *feat;
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spinlock_t irq_stats_lock;
struct dispc_irq_stats irq_stats;
#endif
} dispc;
enum omap_color_component {
/* used for all color formats for OMAP3 and earlier
* and for RGB and Y color component on OMAP4
*/
DISPC_COLOR_COMPONENT_RGB_Y = 1 << 0,
/* used for UV component for
* OMAP_DSS_COLOR_YUV2, OMAP_DSS_COLOR_UYVY, OMAP_DSS_COLOR_NV12
* color formats on OMAP4
*/
DISPC_COLOR_COMPONENT_UV = 1 << 1,
};
enum mgr_reg_fields {
DISPC_MGR_FLD_ENABLE,
DISPC_MGR_FLD_STNTFT,
DISPC_MGR_FLD_GO,
DISPC_MGR_FLD_TFTDATALINES,
DISPC_MGR_FLD_STALLMODE,
DISPC_MGR_FLD_TCKENABLE,
DISPC_MGR_FLD_TCKSELECTION,
DISPC_MGR_FLD_CPR,
DISPC_MGR_FLD_FIFOHANDCHECK,
/* used to maintain a count of the above fields */
DISPC_MGR_FLD_NUM,
};
static const struct {
const char *name;
u32 vsync_irq;
u32 framedone_irq;
u32 sync_lost_irq;
struct reg_field reg_desc[DISPC_MGR_FLD_NUM];
} mgr_desc[] = {
[OMAP_DSS_CHANNEL_LCD] = {
.name = "LCD",
.vsync_irq = DISPC_IRQ_VSYNC,
.framedone_irq = DISPC_IRQ_FRAMEDONE,
.sync_lost_irq = DISPC_IRQ_SYNC_LOST,
.reg_desc = {
[DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 0, 0 },
[DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL, 3, 3 },
[DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 5, 5 },
[DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL, 9, 8 },
[DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL, 11, 11 },
[DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 10, 10 },
[DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 11, 11 },
[DISPC_MGR_FLD_CPR] = { DISPC_CONFIG, 15, 15 },
[DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
},
},
[OMAP_DSS_CHANNEL_DIGIT] = {
.name = "DIGIT",
.vsync_irq = DISPC_IRQ_EVSYNC_ODD | DISPC_IRQ_EVSYNC_EVEN,
.framedone_irq = 0,
.sync_lost_irq = DISPC_IRQ_SYNC_LOST_DIGIT,
.reg_desc = {
[DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL, 1, 1 },
[DISPC_MGR_FLD_STNTFT] = { },
[DISPC_MGR_FLD_GO] = { DISPC_CONTROL, 6, 6 },
[DISPC_MGR_FLD_TFTDATALINES] = { },
[DISPC_MGR_FLD_STALLMODE] = { },
[DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG, 12, 12 },
[DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG, 13, 13 },
[DISPC_MGR_FLD_CPR] = { },
[DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG, 16, 16 },
},
},
[OMAP_DSS_CHANNEL_LCD2] = {
.name = "LCD2",
.vsync_irq = DISPC_IRQ_VSYNC2,
.framedone_irq = DISPC_IRQ_FRAMEDONE2,
.sync_lost_irq = DISPC_IRQ_SYNC_LOST2,
.reg_desc = {
[DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL2, 0, 0 },
[DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL2, 3, 3 },
[DISPC_MGR_FLD_GO] = { DISPC_CONTROL2, 5, 5 },
[DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL2, 9, 8 },
[DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL2, 11, 11 },
[DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG2, 10, 10 },
[DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG2, 11, 11 },
[DISPC_MGR_FLD_CPR] = { DISPC_CONFIG2, 15, 15 },
[DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG2, 16, 16 },
},
},
[OMAP_DSS_CHANNEL_LCD3] = {
.name = "LCD3",
.vsync_irq = DISPC_IRQ_VSYNC3,
.framedone_irq = DISPC_IRQ_FRAMEDONE3,
.sync_lost_irq = DISPC_IRQ_SYNC_LOST3,
.reg_desc = {
[DISPC_MGR_FLD_ENABLE] = { DISPC_CONTROL3, 0, 0 },
[DISPC_MGR_FLD_STNTFT] = { DISPC_CONTROL3, 3, 3 },
[DISPC_MGR_FLD_GO] = { DISPC_CONTROL3, 5, 5 },
[DISPC_MGR_FLD_TFTDATALINES] = { DISPC_CONTROL3, 9, 8 },
[DISPC_MGR_FLD_STALLMODE] = { DISPC_CONTROL3, 11, 11 },
[DISPC_MGR_FLD_TCKENABLE] = { DISPC_CONFIG3, 10, 10 },
[DISPC_MGR_FLD_TCKSELECTION] = { DISPC_CONFIG3, 11, 11 },
[DISPC_MGR_FLD_CPR] = { DISPC_CONFIG3, 15, 15 },
[DISPC_MGR_FLD_FIFOHANDCHECK] = { DISPC_CONFIG3, 16, 16 },
},
},
};
struct color_conv_coef {
int ry, rcr, rcb, gy, gcr, gcb, by, bcr, bcb;
int full_range;
};
static void _omap_dispc_set_irqs(void);
static unsigned long dispc_plane_pclk_rate(enum omap_plane plane);
static unsigned long dispc_plane_lclk_rate(enum omap_plane plane);
static inline void dispc_write_reg(const u16 idx, u32 val)
{
__raw_writel(val, dispc.base + idx);
}
static inline u32 dispc_read_reg(const u16 idx)
{
return __raw_readl(dispc.base + idx);
}
static u32 mgr_fld_read(enum omap_channel channel, enum mgr_reg_fields regfld)
{
const struct reg_field rfld = mgr_desc[channel].reg_desc[regfld];
return REG_GET(rfld.reg, rfld.high, rfld.low);
}
static void mgr_fld_write(enum omap_channel channel,
enum mgr_reg_fields regfld, int val) {
const struct reg_field rfld = mgr_desc[channel].reg_desc[regfld];
REG_FLD_MOD(rfld.reg, val, rfld.high, rfld.low);
}
#define SR(reg) \
dispc.ctx[DISPC_##reg / sizeof(u32)] = dispc_read_reg(DISPC_##reg)
#define RR(reg) \
dispc_write_reg(DISPC_##reg, dispc.ctx[DISPC_##reg / sizeof(u32)])
static void dispc_save_context(void)
{
int i, j;
DSSDBG("dispc_save_context\n");
SR(IRQENABLE);
SR(CONTROL);
SR(CONFIG);
SR(LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
SR(GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2)) {
SR(CONTROL2);
SR(CONFIG2);
}
if (dss_has_feature(FEAT_MGR_LCD3)) {
SR(CONTROL3);
SR(CONFIG3);
}
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
SR(DEFAULT_COLOR(i));
SR(TRANS_COLOR(i));
SR(SIZE_MGR(i));
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
SR(TIMING_H(i));
SR(TIMING_V(i));
SR(POL_FREQ(i));
SR(DIVISORo(i));
SR(DATA_CYCLE1(i));
SR(DATA_CYCLE2(i));
SR(DATA_CYCLE3(i));
if (dss_has_feature(FEAT_CPR)) {
SR(CPR_COEF_R(i));
SR(CPR_COEF_G(i));
SR(CPR_COEF_B(i));
}
}
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
SR(OVL_BA0(i));
SR(OVL_BA1(i));
SR(OVL_POSITION(i));
SR(OVL_SIZE(i));
SR(OVL_ATTRIBUTES(i));
SR(OVL_FIFO_THRESHOLD(i));
SR(OVL_ROW_INC(i));
SR(OVL_PIXEL_INC(i));
if (dss_has_feature(FEAT_PRELOAD))
SR(OVL_PRELOAD(i));
if (i == OMAP_DSS_GFX) {
SR(OVL_WINDOW_SKIP(i));
SR(OVL_TABLE_BA(i));
continue;
}
SR(OVL_FIR(i));
SR(OVL_PICTURE_SIZE(i));
SR(OVL_ACCU0(i));
SR(OVL_ACCU1(i));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_H(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_HV(i, j));
for (j = 0; j < 5; j++)
SR(OVL_CONV_COEF(i, j));
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_V(i, j));
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
SR(OVL_BA0_UV(i));
SR(OVL_BA1_UV(i));
SR(OVL_FIR2(i));
SR(OVL_ACCU2_0(i));
SR(OVL_ACCU2_1(i));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_H2(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_HV2(i, j));
for (j = 0; j < 8; j++)
SR(OVL_FIR_COEF_V2(i, j));
}
if (dss_has_feature(FEAT_ATTR2))
SR(OVL_ATTRIBUTES2(i));
}
if (dss_has_feature(FEAT_CORE_CLK_DIV))
SR(DIVISOR);
dispc.ctx_loss_cnt = dss_get_ctx_loss_count(&dispc.pdev->dev);
dispc.ctx_valid = true;
DSSDBG("context saved, ctx_loss_count %d\n", dispc.ctx_loss_cnt);
}
static void dispc_restore_context(void)
{
int i, j, ctx;
DSSDBG("dispc_restore_context\n");
if (!dispc.ctx_valid)
return;
ctx = dss_get_ctx_loss_count(&dispc.pdev->dev);
if (ctx >= 0 && ctx == dispc.ctx_loss_cnt)
return;
DSSDBG("ctx_loss_count: saved %d, current %d\n",
dispc.ctx_loss_cnt, ctx);
/*RR(IRQENABLE);*/
/*RR(CONTROL);*/
RR(CONFIG);
RR(LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
RR(GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2))
RR(CONFIG2);
if (dss_has_feature(FEAT_MGR_LCD3))
RR(CONFIG3);
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
RR(DEFAULT_COLOR(i));
RR(TRANS_COLOR(i));
RR(SIZE_MGR(i));
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
RR(TIMING_H(i));
RR(TIMING_V(i));
RR(POL_FREQ(i));
RR(DIVISORo(i));
RR(DATA_CYCLE1(i));
RR(DATA_CYCLE2(i));
RR(DATA_CYCLE3(i));
if (dss_has_feature(FEAT_CPR)) {
RR(CPR_COEF_R(i));
RR(CPR_COEF_G(i));
RR(CPR_COEF_B(i));
}
}
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
RR(OVL_BA0(i));
RR(OVL_BA1(i));
RR(OVL_POSITION(i));
RR(OVL_SIZE(i));
RR(OVL_ATTRIBUTES(i));
RR(OVL_FIFO_THRESHOLD(i));
RR(OVL_ROW_INC(i));
RR(OVL_PIXEL_INC(i));
if (dss_has_feature(FEAT_PRELOAD))
RR(OVL_PRELOAD(i));
if (i == OMAP_DSS_GFX) {
RR(OVL_WINDOW_SKIP(i));
RR(OVL_TABLE_BA(i));
continue;
}
RR(OVL_FIR(i));
RR(OVL_PICTURE_SIZE(i));
RR(OVL_ACCU0(i));
RR(OVL_ACCU1(i));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_H(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_HV(i, j));
for (j = 0; j < 5; j++)
RR(OVL_CONV_COEF(i, j));
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_V(i, j));
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
RR(OVL_BA0_UV(i));
RR(OVL_BA1_UV(i));
RR(OVL_FIR2(i));
RR(OVL_ACCU2_0(i));
RR(OVL_ACCU2_1(i));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_H2(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_HV2(i, j));
for (j = 0; j < 8; j++)
RR(OVL_FIR_COEF_V2(i, j));
}
if (dss_has_feature(FEAT_ATTR2))
RR(OVL_ATTRIBUTES2(i));
}
if (dss_has_feature(FEAT_CORE_CLK_DIV))
RR(DIVISOR);
/* enable last, because LCD & DIGIT enable are here */
RR(CONTROL);
if (dss_has_feature(FEAT_MGR_LCD2))
RR(CONTROL2);
if (dss_has_feature(FEAT_MGR_LCD3))
RR(CONTROL3);
/* clear spurious SYNC_LOST_DIGIT interrupts */
dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
/*
* enable last so IRQs won't trigger before
* the context is fully restored
*/
RR(IRQENABLE);
DSSDBG("context restored\n");
}
#undef SR
#undef RR
int dispc_runtime_get(void)
{
int r;
DSSDBG("dispc_runtime_get\n");
r = pm_runtime_get_sync(&dispc.pdev->dev);
WARN_ON(r < 0);
return r < 0 ? r : 0;
}
void dispc_runtime_put(void)
{
int r;
DSSDBG("dispc_runtime_put\n");
r = pm_runtime_put_sync(&dispc.pdev->dev);
WARN_ON(r < 0 && r != -ENOSYS);
}
u32 dispc_mgr_get_vsync_irq(enum omap_channel channel)
{
return mgr_desc[channel].vsync_irq;
}
u32 dispc_mgr_get_framedone_irq(enum omap_channel channel)
{
return mgr_desc[channel].framedone_irq;
}
u32 dispc_wb_get_framedone_irq(void)
{
return DISPC_IRQ_FRAMEDONEWB;
}
bool dispc_mgr_go_busy(enum omap_channel channel)
{
return mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1;
}
void dispc_mgr_go(enum omap_channel channel)
{
bool enable_bit, go_bit;
/* if the channel is not enabled, we don't need GO */
enable_bit = mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE) == 1;
if (!enable_bit)
return;
go_bit = mgr_fld_read(channel, DISPC_MGR_FLD_GO) == 1;
if (go_bit) {
DSSERR("GO bit not down for channel %d\n", channel);
return;
}
DSSDBG("GO %s\n", mgr_desc[channel].name);
mgr_fld_write(channel, DISPC_MGR_FLD_GO, 1);
}
bool dispc_wb_go_busy(void)
{
return REG_GET(DISPC_CONTROL2, 6, 6) == 1;
}
void dispc_wb_go(void)
{
enum omap_plane plane = OMAP_DSS_WB;
bool enable, go;
enable = REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0) == 1;
if (!enable)
return;
go = REG_GET(DISPC_CONTROL2, 6, 6) == 1;
if (go) {
DSSERR("GO bit not down for WB\n");
return;
}
REG_FLD_MOD(DISPC_CONTROL2, 1, 6, 6);
}
static void dispc_ovl_write_firh_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_H(plane, reg), value);
}
static void dispc_ovl_write_firhv_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_HV(plane, reg), value);
}
static void dispc_ovl_write_firv_reg(enum omap_plane plane, int reg, u32 value)
{
dispc_write_reg(DISPC_OVL_FIR_COEF_V(plane, reg), value);
}
static void dispc_ovl_write_firh2_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_H2(plane, reg), value);
}
static void dispc_ovl_write_firhv2_reg(enum omap_plane plane, int reg,
u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_HV2(plane, reg), value);
}
static void dispc_ovl_write_firv2_reg(enum omap_plane plane, int reg, u32 value)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_write_reg(DISPC_OVL_FIR_COEF_V2(plane, reg), value);
}
static void dispc_ovl_set_scale_coef(enum omap_plane plane, int fir_hinc,
int fir_vinc, int five_taps,
enum omap_color_component color_comp)
{
const struct dispc_coef *h_coef, *v_coef;
int i;
h_coef = dispc_ovl_get_scale_coef(fir_hinc, true);
v_coef = dispc_ovl_get_scale_coef(fir_vinc, five_taps);
for (i = 0; i < 8; i++) {
u32 h, hv;
h = FLD_VAL(h_coef[i].hc0_vc00, 7, 0)
| FLD_VAL(h_coef[i].hc1_vc0, 15, 8)
| FLD_VAL(h_coef[i].hc2_vc1, 23, 16)
| FLD_VAL(h_coef[i].hc3_vc2, 31, 24);
hv = FLD_VAL(h_coef[i].hc4_vc22, 7, 0)
| FLD_VAL(v_coef[i].hc1_vc0, 15, 8)
| FLD_VAL(v_coef[i].hc2_vc1, 23, 16)
| FLD_VAL(v_coef[i].hc3_vc2, 31, 24);
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
dispc_ovl_write_firh_reg(plane, i, h);
dispc_ovl_write_firhv_reg(plane, i, hv);
} else {
dispc_ovl_write_firh2_reg(plane, i, h);
dispc_ovl_write_firhv2_reg(plane, i, hv);
}
}
if (five_taps) {
for (i = 0; i < 8; i++) {
u32 v;
v = FLD_VAL(v_coef[i].hc0_vc00, 7, 0)
| FLD_VAL(v_coef[i].hc4_vc22, 15, 8);
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y)
dispc_ovl_write_firv_reg(plane, i, v);
else
dispc_ovl_write_firv2_reg(plane, i, v);
}
}
}
static void dispc_ovl_write_color_conv_coef(enum omap_plane plane,
const struct color_conv_coef *ct)
{
#define CVAL(x, y) (FLD_VAL(x, 26, 16) | FLD_VAL(y, 10, 0))
dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 0), CVAL(ct->rcr, ct->ry));
dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 1), CVAL(ct->gy, ct->rcb));
dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 2), CVAL(ct->gcb, ct->gcr));
dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 3), CVAL(ct->bcr, ct->by));
dispc_write_reg(DISPC_OVL_CONV_COEF(plane, 4), CVAL(0, ct->bcb));
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), ct->full_range, 11, 11);
#undef CVAL
}
static void dispc_setup_color_conv_coef(void)
{
int i;
int num_ovl = dss_feat_get_num_ovls();
int num_wb = dss_feat_get_num_wbs();
const struct color_conv_coef ctbl_bt601_5_ovl = {
298, 409, 0, 298, -208, -100, 298, 0, 517, 0,
};
const struct color_conv_coef ctbl_bt601_5_wb = {
66, 112, -38, 129, -94, -74, 25, -18, 112, 0,
};
for (i = 1; i < num_ovl; i++)
dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_ovl);
for (; i < num_wb; i++)
dispc_ovl_write_color_conv_coef(i, &ctbl_bt601_5_wb);
}
static void dispc_ovl_set_ba0(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA0(plane), paddr);
}
static void dispc_ovl_set_ba1(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA1(plane), paddr);
}
static void dispc_ovl_set_ba0_uv(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA0_UV(plane), paddr);
}
static void dispc_ovl_set_ba1_uv(enum omap_plane plane, u32 paddr)
{
dispc_write_reg(DISPC_OVL_BA1_UV(plane), paddr);
}
static void dispc_ovl_set_pos(enum omap_plane plane,
enum omap_overlay_caps caps, int x, int y)
{
u32 val;
if ((caps & OMAP_DSS_OVL_CAP_POS) == 0)
return;
val = FLD_VAL(y, 26, 16) | FLD_VAL(x, 10, 0);
dispc_write_reg(DISPC_OVL_POSITION(plane), val);
}
static void dispc_ovl_set_input_size(enum omap_plane plane, int width,
int height)
{
u32 val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
if (plane == OMAP_DSS_GFX || plane == OMAP_DSS_WB)
dispc_write_reg(DISPC_OVL_SIZE(plane), val);
else
dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
}
static void dispc_ovl_set_output_size(enum omap_plane plane, int width,
int height)
{
u32 val;
BUG_ON(plane == OMAP_DSS_GFX);
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
if (plane == OMAP_DSS_WB)
dispc_write_reg(DISPC_OVL_PICTURE_SIZE(plane), val);
else
dispc_write_reg(DISPC_OVL_SIZE(plane), val);
}
static void dispc_ovl_set_zorder(enum omap_plane plane,
enum omap_overlay_caps caps, u8 zorder)
{
if ((caps & OMAP_DSS_OVL_CAP_ZORDER) == 0)
return;
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), zorder, 27, 26);
}
static void dispc_ovl_enable_zorder_planes(void)
{
int i;
if (!dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
return;
for (i = 0; i < dss_feat_get_num_ovls(); i++)
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(i), 1, 25, 25);
}
static void dispc_ovl_set_pre_mult_alpha(enum omap_plane plane,
enum omap_overlay_caps caps, bool enable)
{
if ((caps & OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA) == 0)
return;
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 28, 28);
}
static void dispc_ovl_setup_global_alpha(enum omap_plane plane,
enum omap_overlay_caps caps, u8 global_alpha)
{
static const unsigned shifts[] = { 0, 8, 16, 24, };
int shift;
if ((caps & OMAP_DSS_OVL_CAP_GLOBAL_ALPHA) == 0)
return;
shift = shifts[plane];
REG_FLD_MOD(DISPC_GLOBAL_ALPHA, global_alpha, shift + 7, shift);
}
static void dispc_ovl_set_pix_inc(enum omap_plane plane, s32 inc)
{
dispc_write_reg(DISPC_OVL_PIXEL_INC(plane), inc);
}
static void dispc_ovl_set_row_inc(enum omap_plane plane, s32 inc)
{
dispc_write_reg(DISPC_OVL_ROW_INC(plane), inc);
}
static void dispc_ovl_set_color_mode(enum omap_plane plane,
enum omap_color_mode color_mode)
{
u32 m = 0;
if (plane != OMAP_DSS_GFX) {
switch (color_mode) {
case OMAP_DSS_COLOR_NV12:
m = 0x0; break;
case OMAP_DSS_COLOR_RGBX16:
m = 0x1; break;
case OMAP_DSS_COLOR_RGBA16:
m = 0x2; break;
case OMAP_DSS_COLOR_RGB12U:
m = 0x4; break;
case OMAP_DSS_COLOR_ARGB16:
m = 0x5; break;
case OMAP_DSS_COLOR_RGB16:
m = 0x6; break;
case OMAP_DSS_COLOR_ARGB16_1555:
m = 0x7; break;
case OMAP_DSS_COLOR_RGB24U:
m = 0x8; break;
case OMAP_DSS_COLOR_RGB24P:
m = 0x9; break;
case OMAP_DSS_COLOR_YUV2:
m = 0xa; break;
case OMAP_DSS_COLOR_UYVY:
m = 0xb; break;
case OMAP_DSS_COLOR_ARGB32:
m = 0xc; break;
case OMAP_DSS_COLOR_RGBA32:
m = 0xd; break;
case OMAP_DSS_COLOR_RGBX32:
m = 0xe; break;
case OMAP_DSS_COLOR_XRGB16_1555:
m = 0xf; break;
default:
BUG(); return;
}
} else {
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
m = 0x0; break;
case OMAP_DSS_COLOR_CLUT2:
m = 0x1; break;
case OMAP_DSS_COLOR_CLUT4:
m = 0x2; break;
case OMAP_DSS_COLOR_CLUT8:
m = 0x3; break;
case OMAP_DSS_COLOR_RGB12U:
m = 0x4; break;
case OMAP_DSS_COLOR_ARGB16:
m = 0x5; break;
case OMAP_DSS_COLOR_RGB16:
m = 0x6; break;
case OMAP_DSS_COLOR_ARGB16_1555:
m = 0x7; break;
case OMAP_DSS_COLOR_RGB24U:
m = 0x8; break;
case OMAP_DSS_COLOR_RGB24P:
m = 0x9; break;
case OMAP_DSS_COLOR_RGBX16:
m = 0xa; break;
case OMAP_DSS_COLOR_RGBA16:
m = 0xb; break;
case OMAP_DSS_COLOR_ARGB32:
m = 0xc; break;
case OMAP_DSS_COLOR_RGBA32:
m = 0xd; break;
case OMAP_DSS_COLOR_RGBX32:
m = 0xe; break;
case OMAP_DSS_COLOR_XRGB16_1555:
m = 0xf; break;
default:
BUG(); return;
}
}
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), m, 4, 1);
}
static void dispc_ovl_configure_burst_type(enum omap_plane plane,
enum omap_dss_rotation_type rotation_type)
{
if (dss_has_feature(FEAT_BURST_2D) == 0)
return;
if (rotation_type == OMAP_DSS_ROT_TILER)
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 1, 29, 29);
else
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), 0, 29, 29);
}
void dispc_ovl_set_channel_out(enum omap_plane plane, enum omap_channel channel)
{
int shift;
u32 val;
int chan = 0, chan2 = 0;
switch (plane) {
case OMAP_DSS_GFX:
shift = 8;
break;
case OMAP_DSS_VIDEO1:
case OMAP_DSS_VIDEO2:
case OMAP_DSS_VIDEO3:
shift = 16;
break;
default:
BUG();
return;
}
val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
if (dss_has_feature(FEAT_MGR_LCD2)) {
switch (channel) {
case OMAP_DSS_CHANNEL_LCD:
chan = 0;
chan2 = 0;
break;
case OMAP_DSS_CHANNEL_DIGIT:
chan = 1;
chan2 = 0;
break;
case OMAP_DSS_CHANNEL_LCD2:
chan = 0;
chan2 = 1;
break;
case OMAP_DSS_CHANNEL_LCD3:
if (dss_has_feature(FEAT_MGR_LCD3)) {
chan = 0;
chan2 = 2;
} else {
BUG();
return;
}
break;
default:
BUG();
return;
}
val = FLD_MOD(val, chan, shift, shift);
val = FLD_MOD(val, chan2, 31, 30);
} else {
val = FLD_MOD(val, channel, shift, shift);
}
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
}
static enum omap_channel dispc_ovl_get_channel_out(enum omap_plane plane)
{
int shift;
u32 val;
enum omap_channel channel;
switch (plane) {
case OMAP_DSS_GFX:
shift = 8;
break;
case OMAP_DSS_VIDEO1:
case OMAP_DSS_VIDEO2:
case OMAP_DSS_VIDEO3:
shift = 16;
break;
default:
BUG();
return 0;
}
val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
if (dss_has_feature(FEAT_MGR_LCD3)) {
if (FLD_GET(val, 31, 30) == 0)
channel = FLD_GET(val, shift, shift);
else if (FLD_GET(val, 31, 30) == 1)
channel = OMAP_DSS_CHANNEL_LCD2;
else
channel = OMAP_DSS_CHANNEL_LCD3;
} else if (dss_has_feature(FEAT_MGR_LCD2)) {
if (FLD_GET(val, 31, 30) == 0)
channel = FLD_GET(val, shift, shift);
else
channel = OMAP_DSS_CHANNEL_LCD2;
} else {
channel = FLD_GET(val, shift, shift);
}
return channel;
}
void dispc_wb_set_channel_in(enum dss_writeback_channel channel)
{
enum omap_plane plane = OMAP_DSS_WB;
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), channel, 18, 16);
}
static void dispc_ovl_set_burst_size(enum omap_plane plane,
enum omap_burst_size burst_size)
{
static const unsigned shifts[] = { 6, 14, 14, 14, 14, };
int shift;
shift = shifts[plane];
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), burst_size, shift + 1, shift);
}
static void dispc_configure_burst_sizes(void)
{
int i;
const int burst_size = BURST_SIZE_X8;
/* Configure burst size always to maximum size */
for (i = 0; i < omap_dss_get_num_overlays(); ++i)
dispc_ovl_set_burst_size(i, burst_size);
}
static u32 dispc_ovl_get_burst_size(enum omap_plane plane)
{
unsigned unit = dss_feat_get_burst_size_unit();
/* burst multiplier is always x8 (see dispc_configure_burst_sizes()) */
return unit * 8;
}
void dispc_enable_gamma_table(bool enable)
{
/*
* This is partially implemented to support only disabling of
* the gamma table.
*/
if (enable) {
DSSWARN("Gamma table enabling for TV not yet supported");
return;
}
REG_FLD_MOD(DISPC_CONFIG, enable, 9, 9);
}
static void dispc_mgr_enable_cpr(enum omap_channel channel, bool enable)
{
if (channel == OMAP_DSS_CHANNEL_DIGIT)
return;
mgr_fld_write(channel, DISPC_MGR_FLD_CPR, enable);
}
static void dispc_mgr_set_cpr_coef(enum omap_channel channel,
struct omap_dss_cpr_coefs *coefs)
{
u32 coef_r, coef_g, coef_b;
if (!dss_mgr_is_lcd(channel))
return;
coef_r = FLD_VAL(coefs->rr, 31, 22) | FLD_VAL(coefs->rg, 20, 11) |
FLD_VAL(coefs->rb, 9, 0);
coef_g = FLD_VAL(coefs->gr, 31, 22) | FLD_VAL(coefs->gg, 20, 11) |
FLD_VAL(coefs->gb, 9, 0);
coef_b = FLD_VAL(coefs->br, 31, 22) | FLD_VAL(coefs->bg, 20, 11) |
FLD_VAL(coefs->bb, 9, 0);
dispc_write_reg(DISPC_CPR_COEF_R(channel), coef_r);
dispc_write_reg(DISPC_CPR_COEF_G(channel), coef_g);
dispc_write_reg(DISPC_CPR_COEF_B(channel), coef_b);
}
static void dispc_ovl_set_vid_color_conv(enum omap_plane plane, bool enable)
{
u32 val;
BUG_ON(plane == OMAP_DSS_GFX);
val = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
val = FLD_MOD(val, enable, 9, 9);
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), val);
}
static void dispc_ovl_enable_replication(enum omap_plane plane,
enum omap_overlay_caps caps, bool enable)
{
static const unsigned shifts[] = { 5, 10, 10, 10 };
int shift;
if ((caps & OMAP_DSS_OVL_CAP_REPLICATION) == 0)
return;
shift = shifts[plane];
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable, shift, shift);
}
static void dispc_mgr_set_size(enum omap_channel channel, u16 width,
u16 height)
{
u32 val;
val = FLD_VAL(height - 1, 26, 16) | FLD_VAL(width - 1, 10, 0);
dispc_write_reg(DISPC_SIZE_MGR(channel), val);
}
static void dispc_init_fifos(void)
{
u32 size;
int fifo;
u8 start, end;
u32 unit;
unit = dss_feat_get_buffer_size_unit();
dss_feat_get_reg_field(FEAT_REG_FIFOSIZE, &start, &end);
for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
size = REG_GET(DISPC_OVL_FIFO_SIZE_STATUS(fifo), start, end);
size *= unit;
dispc.fifo_size[fifo] = size;
/*
* By default fifos are mapped directly to overlays, fifo 0 to
* ovl 0, fifo 1 to ovl 1, etc.
*/
dispc.fifo_assignment[fifo] = fifo;
}
/*
* The GFX fifo on OMAP4 is smaller than the other fifos. The small fifo
* causes problems with certain use cases, like using the tiler in 2D
* mode. The below hack swaps the fifos of GFX and WB planes, thus
* giving GFX plane a larger fifo. WB but should work fine with a
* smaller fifo.
*/
if (dispc.feat->gfx_fifo_workaround) {
u32 v;
v = dispc_read_reg(DISPC_GLOBAL_BUFFER);
v = FLD_MOD(v, 4, 2, 0); /* GFX BUF top to WB */
v = FLD_MOD(v, 4, 5, 3); /* GFX BUF bottom to WB */
v = FLD_MOD(v, 0, 26, 24); /* WB BUF top to GFX */
v = FLD_MOD(v, 0, 29, 27); /* WB BUF bottom to GFX */
dispc_write_reg(DISPC_GLOBAL_BUFFER, v);
dispc.fifo_assignment[OMAP_DSS_GFX] = OMAP_DSS_WB;
dispc.fifo_assignment[OMAP_DSS_WB] = OMAP_DSS_GFX;
}
}
static u32 dispc_ovl_get_fifo_size(enum omap_plane plane)
{
int fifo;
u32 size = 0;
for (fifo = 0; fifo < dispc.feat->num_fifos; ++fifo) {
if (dispc.fifo_assignment[fifo] == plane)
size += dispc.fifo_size[fifo];
}
return size;
}
void dispc_ovl_set_fifo_threshold(enum omap_plane plane, u32 low, u32 high)
{
u8 hi_start, hi_end, lo_start, lo_end;
u32 unit;
unit = dss_feat_get_buffer_size_unit();
WARN_ON(low % unit != 0);
WARN_ON(high % unit != 0);
low /= unit;
high /= unit;
dss_feat_get_reg_field(FEAT_REG_FIFOHIGHTHRESHOLD, &hi_start, &hi_end);
dss_feat_get_reg_field(FEAT_REG_FIFOLOWTHRESHOLD, &lo_start, &lo_end);
DSSDBG("fifo(%d) threshold (bytes), old %u/%u, new %u/%u\n",
plane,
REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
lo_start, lo_end) * unit,
REG_GET(DISPC_OVL_FIFO_THRESHOLD(plane),
hi_start, hi_end) * unit,
low * unit, high * unit);
dispc_write_reg(DISPC_OVL_FIFO_THRESHOLD(plane),
FLD_VAL(high, hi_start, hi_end) |
FLD_VAL(low, lo_start, lo_end));
}
void dispc_enable_fifomerge(bool enable)
{
if (!dss_has_feature(FEAT_FIFO_MERGE)) {
WARN_ON(enable);
return;
}
DSSDBG("FIFO merge %s\n", enable ? "enabled" : "disabled");
REG_FLD_MOD(DISPC_CONFIG, enable ? 1 : 0, 14, 14);
}
void dispc_ovl_compute_fifo_thresholds(enum omap_plane plane,
u32 *fifo_low, u32 *fifo_high, bool use_fifomerge,
bool manual_update)
{
/*
* All sizes are in bytes. Both the buffer and burst are made of
* buffer_units, and the fifo thresholds must be buffer_unit aligned.
*/
unsigned buf_unit = dss_feat_get_buffer_size_unit();
unsigned ovl_fifo_size, total_fifo_size, burst_size;
int i;
burst_size = dispc_ovl_get_burst_size(plane);
ovl_fifo_size = dispc_ovl_get_fifo_size(plane);
if (use_fifomerge) {
total_fifo_size = 0;
for (i = 0; i < omap_dss_get_num_overlays(); ++i)
total_fifo_size += dispc_ovl_get_fifo_size(i);
} else {
total_fifo_size = ovl_fifo_size;
}
/*
* We use the same low threshold for both fifomerge and non-fifomerge
* cases, but for fifomerge we calculate the high threshold using the
* combined fifo size
*/
if (manual_update && dss_has_feature(FEAT_OMAP3_DSI_FIFO_BUG)) {
*fifo_low = ovl_fifo_size - burst_size * 2;
*fifo_high = total_fifo_size - burst_size;
} else if (plane == OMAP_DSS_WB) {
/*
* Most optimal configuration for writeback is to push out data
* to the interconnect the moment writeback pushes enough pixels
* in the FIFO to form a burst
*/
*fifo_low = 0;
*fifo_high = burst_size;
} else {
*fifo_low = ovl_fifo_size - burst_size;
*fifo_high = total_fifo_size - buf_unit;
}
}
static void dispc_ovl_set_fir(enum omap_plane plane,
int hinc, int vinc,
enum omap_color_component color_comp)
{
u32 val;
if (color_comp == DISPC_COLOR_COMPONENT_RGB_Y) {
u8 hinc_start, hinc_end, vinc_start, vinc_end;
dss_feat_get_reg_field(FEAT_REG_FIRHINC,
&hinc_start, &hinc_end);
dss_feat_get_reg_field(FEAT_REG_FIRVINC,
&vinc_start, &vinc_end);
val = FLD_VAL(vinc, vinc_start, vinc_end) |
FLD_VAL(hinc, hinc_start, hinc_end);
dispc_write_reg(DISPC_OVL_FIR(plane), val);
} else {
val = FLD_VAL(vinc, 28, 16) | FLD_VAL(hinc, 12, 0);
dispc_write_reg(DISPC_OVL_FIR2(plane), val);
}
}
static void dispc_ovl_set_vid_accu0(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
u8 hor_start, hor_end, vert_start, vert_end;
dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
val = FLD_VAL(vaccu, vert_start, vert_end) |
FLD_VAL(haccu, hor_start, hor_end);
dispc_write_reg(DISPC_OVL_ACCU0(plane), val);
}
static void dispc_ovl_set_vid_accu1(enum omap_plane plane, int haccu, int vaccu)
{
u32 val;
u8 hor_start, hor_end, vert_start, vert_end;
dss_feat_get_reg_field(FEAT_REG_HORIZONTALACCU, &hor_start, &hor_end);
dss_feat_get_reg_field(FEAT_REG_VERTICALACCU, &vert_start, &vert_end);
val = FLD_VAL(vaccu, vert_start, vert_end) |
FLD_VAL(haccu, hor_start, hor_end);
dispc_write_reg(DISPC_OVL_ACCU1(plane), val);
}
static void dispc_ovl_set_vid_accu2_0(enum omap_plane plane, int haccu,
int vaccu)
{
u32 val;
val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
dispc_write_reg(DISPC_OVL_ACCU2_0(plane), val);
}
static void dispc_ovl_set_vid_accu2_1(enum omap_plane plane, int haccu,
int vaccu)
{
u32 val;
val = FLD_VAL(vaccu, 26, 16) | FLD_VAL(haccu, 10, 0);
dispc_write_reg(DISPC_OVL_ACCU2_1(plane), val);
}
static void dispc_ovl_set_scale_param(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool five_taps, u8 rotation,
enum omap_color_component color_comp)
{
int fir_hinc, fir_vinc;
fir_hinc = 1024 * orig_width / out_width;
fir_vinc = 1024 * orig_height / out_height;
dispc_ovl_set_scale_coef(plane, fir_hinc, fir_vinc, five_taps,
color_comp);
dispc_ovl_set_fir(plane, fir_hinc, fir_vinc, color_comp);
}
static void dispc_ovl_set_accu_uv(enum omap_plane plane,
u16 orig_width, u16 orig_height, u16 out_width, u16 out_height,
bool ilace, enum omap_color_mode color_mode, u8 rotation)
{
int h_accu2_0, h_accu2_1;
int v_accu2_0, v_accu2_1;
int chroma_hinc, chroma_vinc;
int idx;
struct accu {
s8 h0_m, h0_n;
s8 h1_m, h1_n;
s8 v0_m, v0_n;
s8 v1_m, v1_n;
};
const struct accu *accu_table;
const struct accu *accu_val;
static const struct accu accu_nv12[4] = {
{ 0, 1, 0, 1 , -1, 2, 0, 1 },
{ 1, 2, -3, 4 , 0, 1, 0, 1 },
{ -1, 1, 0, 1 , -1, 2, 0, 1 },
{ -1, 2, -1, 2 , -1, 1, 0, 1 },
};
static const struct accu accu_nv12_ilace[4] = {
{ 0, 1, 0, 1 , -3, 4, -1, 4 },
{ -1, 4, -3, 4 , 0, 1, 0, 1 },
{ -1, 1, 0, 1 , -1, 4, -3, 4 },
{ -3, 4, -3, 4 , -1, 1, 0, 1 },
};
static const struct accu accu_yuv[4] = {
{ 0, 1, 0, 1, 0, 1, 0, 1 },
{ 0, 1, 0, 1, 0, 1, 0, 1 },
{ -1, 1, 0, 1, 0, 1, 0, 1 },
{ 0, 1, 0, 1, -1, 1, 0, 1 },
};
switch (rotation) {
case OMAP_DSS_ROT_0:
idx = 0;
break;
case OMAP_DSS_ROT_90:
idx = 1;
break;
case OMAP_DSS_ROT_180:
idx = 2;
break;
case OMAP_DSS_ROT_270:
idx = 3;
break;
default:
BUG();
return;
}
switch (color_mode) {
case OMAP_DSS_COLOR_NV12:
if (ilace)
accu_table = accu_nv12_ilace;
else
accu_table = accu_nv12;
break;
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
accu_table = accu_yuv;
break;
default:
BUG();
return;
}
accu_val = &accu_table[idx];
chroma_hinc = 1024 * orig_width / out_width;
chroma_vinc = 1024 * orig_height / out_height;
h_accu2_0 = (accu_val->h0_m * chroma_hinc / accu_val->h0_n) % 1024;
h_accu2_1 = (accu_val->h1_m * chroma_hinc / accu_val->h1_n) % 1024;
v_accu2_0 = (accu_val->v0_m * chroma_vinc / accu_val->v0_n) % 1024;
v_accu2_1 = (accu_val->v1_m * chroma_vinc / accu_val->v1_n) % 1024;
dispc_ovl_set_vid_accu2_0(plane, h_accu2_0, v_accu2_0);
dispc_ovl_set_vid_accu2_1(plane, h_accu2_1, v_accu2_1);
}
static void dispc_ovl_set_scaling_common(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
int accu0 = 0;
int accu1 = 0;
u32 l;
dispc_ovl_set_scale_param(plane, orig_width, orig_height,
out_width, out_height, five_taps,
rotation, DISPC_COLOR_COMPONENT_RGB_Y);
l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
/* RESIZEENABLE and VERTICALTAPS */
l &= ~((0x3 << 5) | (0x1 << 21));
l |= (orig_width != out_width) ? (1 << 5) : 0;
l |= (orig_height != out_height) ? (1 << 6) : 0;
l |= five_taps ? (1 << 21) : 0;
/* VRESIZECONF and HRESIZECONF */
if (dss_has_feature(FEAT_RESIZECONF)) {
l &= ~(0x3 << 7);
l |= (orig_width <= out_width) ? 0 : (1 << 7);
l |= (orig_height <= out_height) ? 0 : (1 << 8);
}
/* LINEBUFFERSPLIT */
if (dss_has_feature(FEAT_LINEBUFFERSPLIT)) {
l &= ~(0x1 << 22);
l |= five_taps ? (1 << 22) : 0;
}
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
if (ilace && !fieldmode) {
accu1 = 0;
accu0 = ((1024 * orig_height / out_height) / 2) & 0x3ff;
if (accu0 >= 1024/2) {
accu1 = 1024/2;
accu0 -= accu1;
}
}
dispc_ovl_set_vid_accu0(plane, 0, accu0);
dispc_ovl_set_vid_accu1(plane, 0, accu1);
}
static void dispc_ovl_set_scaling_uv(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
int scale_x = out_width != orig_width;
int scale_y = out_height != orig_height;
bool chroma_upscale = plane != OMAP_DSS_WB ? true : false;
if (!dss_has_feature(FEAT_HANDLE_UV_SEPARATE))
return;
if ((color_mode != OMAP_DSS_COLOR_YUV2 &&
color_mode != OMAP_DSS_COLOR_UYVY &&
color_mode != OMAP_DSS_COLOR_NV12)) {
/* reset chroma resampling for RGB formats */
if (plane != OMAP_DSS_WB)
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane), 0, 8, 8);
return;
}
dispc_ovl_set_accu_uv(plane, orig_width, orig_height, out_width,
out_height, ilace, color_mode, rotation);
switch (color_mode) {
case OMAP_DSS_COLOR_NV12:
if (chroma_upscale) {
/* UV is subsampled by 2 horizontally and vertically */
orig_height >>= 1;
orig_width >>= 1;
} else {
/* UV is downsampled by 2 horizontally and vertically */
orig_height <<= 1;
orig_width <<= 1;
}
break;
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
/* For YUV422 with 90/270 rotation, we don't upsample chroma */
if (rotation == OMAP_DSS_ROT_0 ||
rotation == OMAP_DSS_ROT_180) {
if (chroma_upscale)
/* UV is subsampled by 2 horizontally */
orig_width >>= 1;
else
/* UV is downsampled by 2 horizontally */
orig_width <<= 1;
}
/* must use FIR for YUV422 if rotated */
if (rotation != OMAP_DSS_ROT_0)
scale_x = scale_y = true;
break;
default:
BUG();
return;
}
if (out_width != orig_width)
scale_x = true;
if (out_height != orig_height)
scale_y = true;
dispc_ovl_set_scale_param(plane, orig_width, orig_height,
out_width, out_height, five_taps,
rotation, DISPC_COLOR_COMPONENT_UV);
if (plane != OMAP_DSS_WB)
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES2(plane),
(scale_x || scale_y) ? 1 : 0, 8, 8);
/* set H scaling */
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_x ? 1 : 0, 5, 5);
/* set V scaling */
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), scale_y ? 1 : 0, 6, 6);
}
static void dispc_ovl_set_scaling(enum omap_plane plane,
u16 orig_width, u16 orig_height,
u16 out_width, u16 out_height,
bool ilace, bool five_taps,
bool fieldmode, enum omap_color_mode color_mode,
u8 rotation)
{
BUG_ON(plane == OMAP_DSS_GFX);
dispc_ovl_set_scaling_common(plane,
orig_width, orig_height,
out_width, out_height,
ilace, five_taps,
fieldmode, color_mode,
rotation);
dispc_ovl_set_scaling_uv(plane,
orig_width, orig_height,
out_width, out_height,
ilace, five_taps,
fieldmode, color_mode,
rotation);
}
static void dispc_ovl_set_rotation_attrs(enum omap_plane plane, u8 rotation,
bool mirroring, enum omap_color_mode color_mode)
{
bool row_repeat = false;
int vidrot = 0;
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY) {
if (mirroring) {
switch (rotation) {
case OMAP_DSS_ROT_0:
vidrot = 2;
break;
case OMAP_DSS_ROT_90:
vidrot = 1;
break;
case OMAP_DSS_ROT_180:
vidrot = 0;
break;
case OMAP_DSS_ROT_270:
vidrot = 3;
break;
}
} else {
switch (rotation) {
case OMAP_DSS_ROT_0:
vidrot = 0;
break;
case OMAP_DSS_ROT_90:
vidrot = 1;
break;
case OMAP_DSS_ROT_180:
vidrot = 2;
break;
case OMAP_DSS_ROT_270:
vidrot = 3;
break;
}
}
if (rotation == OMAP_DSS_ROT_90 || rotation == OMAP_DSS_ROT_270)
row_repeat = true;
else
row_repeat = false;
}
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), vidrot, 13, 12);
if (dss_has_feature(FEAT_ROWREPEATENABLE))
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane),
row_repeat ? 1 : 0, 18, 18);
}
static int color_mode_to_bpp(enum omap_color_mode color_mode)
{
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
return 1;
case OMAP_DSS_COLOR_CLUT2:
return 2;
case OMAP_DSS_COLOR_CLUT4:
return 4;
case OMAP_DSS_COLOR_CLUT8:
case OMAP_DSS_COLOR_NV12:
return 8;
case OMAP_DSS_COLOR_RGB12U:
case OMAP_DSS_COLOR_RGB16:
case OMAP_DSS_COLOR_ARGB16:
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
case OMAP_DSS_COLOR_RGBA16:
case OMAP_DSS_COLOR_RGBX16:
case OMAP_DSS_COLOR_ARGB16_1555:
case OMAP_DSS_COLOR_XRGB16_1555:
return 16;
case OMAP_DSS_COLOR_RGB24P:
return 24;
case OMAP_DSS_COLOR_RGB24U:
case OMAP_DSS_COLOR_ARGB32:
case OMAP_DSS_COLOR_RGBA32:
case OMAP_DSS_COLOR_RGBX32:
return 32;
default:
BUG();
return 0;
}
}
static s32 pixinc(int pixels, u8 ps)
{
if (pixels == 1)
return 1;
else if (pixels > 1)
return 1 + (pixels - 1) * ps;
else if (pixels < 0)
return 1 - (-pixels + 1) * ps;
else
BUG();
return 0;
}
static void calc_vrfb_rotation_offset(u8 rotation, bool mirror,
u16 screen_width,
u16 width, u16 height,
enum omap_color_mode color_mode, bool fieldmode,
unsigned int field_offset,
unsigned *offset0, unsigned *offset1,
s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
{
u8 ps;
/* FIXME CLUT formats */
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
case OMAP_DSS_COLOR_CLUT2:
case OMAP_DSS_COLOR_CLUT4:
case OMAP_DSS_COLOR_CLUT8:
BUG();
return;
case OMAP_DSS_COLOR_YUV2:
case OMAP_DSS_COLOR_UYVY:
ps = 4;
break;
default:
ps = color_mode_to_bpp(color_mode) / 8;
break;
}
DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
width, height);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
switch (rotation + mirror * 4) {
case OMAP_DSS_ROT_0:
case OMAP_DSS_ROT_180:
/*
* If the pixel format is YUV or UYVY divide the width
* of the image by 2 for 0 and 180 degree rotation.
*/
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
width = width >> 1;
case OMAP_DSS_ROT_90:
case OMAP_DSS_ROT_270:
*offset1 = 0;
if (field_offset)
*offset0 = field_offset * screen_width * ps;
else
*offset0 = 0;
*row_inc = pixinc(1 +
(y_predecim * screen_width - x_predecim * width) +
(fieldmode ? screen_width : 0), ps);
*pix_inc = pixinc(x_predecim, ps);
break;
case OMAP_DSS_ROT_0 + 4:
case OMAP_DSS_ROT_180 + 4:
/* If the pixel format is YUV or UYVY divide the width
* of the image by 2 for 0 degree and 180 degree
*/
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
width = width >> 1;
case OMAP_DSS_ROT_90 + 4:
case OMAP_DSS_ROT_270 + 4:
*offset1 = 0;
if (field_offset)
*offset0 = field_offset * screen_width * ps;
else
*offset0 = 0;
*row_inc = pixinc(1 -
(y_predecim * screen_width + x_predecim * width) -
(fieldmode ? screen_width : 0), ps);
*pix_inc = pixinc(x_predecim, ps);
break;
default:
BUG();
return;
}
}
static void calc_dma_rotation_offset(u8 rotation, bool mirror,
u16 screen_width,
u16 width, u16 height,
enum omap_color_mode color_mode, bool fieldmode,
unsigned int field_offset,
unsigned *offset0, unsigned *offset1,
s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
{
u8 ps;
u16 fbw, fbh;
/* FIXME CLUT formats */
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
case OMAP_DSS_COLOR_CLUT2:
case OMAP_DSS_COLOR_CLUT4:
case OMAP_DSS_COLOR_CLUT8:
BUG();
return;
default:
ps = color_mode_to_bpp(color_mode) / 8;
break;
}
DSSDBG("calc_rot(%d): scrw %d, %dx%d\n", rotation, screen_width,
width, height);
/* width & height are overlay sizes, convert to fb sizes */
if (rotation == OMAP_DSS_ROT_0 || rotation == OMAP_DSS_ROT_180) {
fbw = width;
fbh = height;
} else {
fbw = height;
fbh = width;
}
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
switch (rotation + mirror * 4) {
case OMAP_DSS_ROT_0:
*offset1 = 0;
if (field_offset)
*offset0 = *offset1 + field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(1 +
(y_predecim * screen_width - fbw * x_predecim) +
(fieldmode ? screen_width : 0), ps);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
*pix_inc = pixinc(x_predecim, 2 * ps);
else
*pix_inc = pixinc(x_predecim, ps);
break;
case OMAP_DSS_ROT_90:
*offset1 = screen_width * (fbh - 1) * ps;
if (field_offset)
*offset0 = *offset1 + field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(screen_width * (fbh * x_predecim - 1) +
y_predecim + (fieldmode ? 1 : 0), ps);
*pix_inc = pixinc(-x_predecim * screen_width, ps);
break;
case OMAP_DSS_ROT_180:
*offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-1 -
(y_predecim * screen_width - fbw * x_predecim) -
(fieldmode ? screen_width : 0), ps);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
*pix_inc = pixinc(-x_predecim, 2 * ps);
else
*pix_inc = pixinc(-x_predecim, ps);
break;
case OMAP_DSS_ROT_270:
*offset1 = (fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) -
y_predecim - (fieldmode ? 1 : 0), ps);
*pix_inc = pixinc(x_predecim * screen_width, ps);
break;
/* mirroring */
case OMAP_DSS_ROT_0 + 4:
*offset1 = (fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 + field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(y_predecim * screen_width * 2 - 1 +
(fieldmode ? screen_width : 0),
ps);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
*pix_inc = pixinc(-x_predecim, 2 * ps);
else
*pix_inc = pixinc(-x_predecim, ps);
break;
case OMAP_DSS_ROT_90 + 4:
*offset1 = 0;
if (field_offset)
*offset0 = *offset1 + field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(-screen_width * (fbh * x_predecim - 1) +
y_predecim + (fieldmode ? 1 : 0),
ps);
*pix_inc = pixinc(x_predecim * screen_width, ps);
break;
case OMAP_DSS_ROT_180 + 4:
*offset1 = screen_width * (fbh - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(1 - y_predecim * screen_width * 2 -
(fieldmode ? screen_width : 0),
ps);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
*pix_inc = pixinc(x_predecim, 2 * ps);
else
*pix_inc = pixinc(x_predecim, ps);
break;
case OMAP_DSS_ROT_270 + 4:
*offset1 = (screen_width * (fbh - 1) + fbw - 1) * ps;
if (field_offset)
*offset0 = *offset1 - field_offset * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(screen_width * (fbh * x_predecim - 1) -
y_predecim - (fieldmode ? 1 : 0),
ps);
*pix_inc = pixinc(-x_predecim * screen_width, ps);
break;
default:
BUG();
return;
}
}
static void calc_tiler_rotation_offset(u16 screen_width, u16 width,
enum omap_color_mode color_mode, bool fieldmode,
unsigned int field_offset, unsigned *offset0, unsigned *offset1,
s32 *row_inc, s32 *pix_inc, int x_predecim, int y_predecim)
{
u8 ps;
switch (color_mode) {
case OMAP_DSS_COLOR_CLUT1:
case OMAP_DSS_COLOR_CLUT2:
case OMAP_DSS_COLOR_CLUT4:
case OMAP_DSS_COLOR_CLUT8:
BUG();
return;
default:
ps = color_mode_to_bpp(color_mode) / 8;
break;
}
DSSDBG("scrw %d, width %d\n", screen_width, width);
/*
* field 0 = even field = bottom field
* field 1 = odd field = top field
*/
*offset1 = 0;
if (field_offset)
*offset0 = *offset1 + field_offset * screen_width * ps;
else
*offset0 = *offset1;
*row_inc = pixinc(1 + (y_predecim * screen_width - width * x_predecim) +
(fieldmode ? screen_width : 0), ps);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY)
*pix_inc = pixinc(x_predecim, 2 * ps);
else
*pix_inc = pixinc(x_predecim, ps);
}
/*
* This function is used to avoid synclosts in OMAP3, because of some
* undocumented horizontal position and timing related limitations.
*/
static int check_horiz_timing_omap3(enum omap_plane plane,
const struct omap_video_timings *t, u16 pos_x,
u16 width, u16 height, u16 out_width, u16 out_height)
{
int DS = DIV_ROUND_UP(height, out_height);
unsigned long nonactive;
static const u8 limits[3] = { 8, 10, 20 };
u64 val, blank;
unsigned long pclk = dispc_plane_pclk_rate(plane);
unsigned long lclk = dispc_plane_lclk_rate(plane);
int i;
nonactive = t->x_res + t->hfp + t->hsw + t->hbp - out_width;
i = 0;
if (out_height < height)
i++;
if (out_width < width)
i++;
blank = div_u64((u64)(t->hbp + t->hsw + t->hfp) * lclk, pclk);
DSSDBG("blanking period + ppl = %llu (limit = %u)\n", blank, limits[i]);
if (blank <= limits[i])
return -EINVAL;
/*
* Pixel data should be prepared before visible display point starts.
* So, atleast DS-2 lines must have already been fetched by DISPC
* during nonactive - pos_x period.
*/
val = div_u64((u64)(nonactive - pos_x) * lclk, pclk);
DSSDBG("(nonactive - pos_x) * pcd = %llu max(0, DS - 2) * width = %d\n",
val, max(0, DS - 2) * width);
if (val < max(0, DS - 2) * width)
return -EINVAL;
/*
* All lines need to be refilled during the nonactive period of which
* only one line can be loaded during the active period. So, atleast
* DS - 1 lines should be loaded during nonactive period.
*/
val = div_u64((u64)nonactive * lclk, pclk);
DSSDBG("nonactive * pcd = %llu, max(0, DS - 1) * width = %d\n",
val, max(0, DS - 1) * width);
if (val < max(0, DS - 1) * width)
return -EINVAL;
return 0;
}
static unsigned long calc_core_clk_five_taps(enum omap_plane plane,
const struct omap_video_timings *mgr_timings, u16 width,
u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode)
{
u32 core_clk = 0;
u64 tmp;
unsigned long pclk = dispc_plane_pclk_rate(plane);
if (height <= out_height && width <= out_width)
return (unsigned long) pclk;
if (height > out_height) {
unsigned int ppl = mgr_timings->x_res;
tmp = pclk * height * out_width;
do_div(tmp, 2 * out_height * ppl);
core_clk = tmp;
if (height > 2 * out_height) {
if (ppl == out_width)
return 0;
tmp = pclk * (height - 2 * out_height) * out_width;
do_div(tmp, 2 * out_height * (ppl - out_width));
core_clk = max_t(u32, core_clk, tmp);
}
}
if (width > out_width) {
tmp = pclk * width;
do_div(tmp, out_width);
core_clk = max_t(u32, core_clk, tmp);
if (color_mode == OMAP_DSS_COLOR_RGB24U)
core_clk <<= 1;
}
return core_clk;
}
static unsigned long calc_core_clk_24xx(enum omap_plane plane, u16 width,
u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
{
unsigned long pclk = dispc_plane_pclk_rate(plane);
if (height > out_height && width > out_width)
return pclk * 4;
else
return pclk * 2;
}
static unsigned long calc_core_clk_34xx(enum omap_plane plane, u16 width,
u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
{
unsigned int hf, vf;
unsigned long pclk = dispc_plane_pclk_rate(plane);
/*
* FIXME how to determine the 'A' factor
* for the no downscaling case ?
*/
if (width > 3 * out_width)
hf = 4;
else if (width > 2 * out_width)
hf = 3;
else if (width > out_width)
hf = 2;
else
hf = 1;
if (height > out_height)
vf = 2;
else
vf = 1;
return pclk * vf * hf;
}
static unsigned long calc_core_clk_44xx(enum omap_plane plane, u16 width,
u16 height, u16 out_width, u16 out_height, bool mem_to_mem)
{
unsigned long pclk;
/*
* If the overlay/writeback is in mem to mem mode, there are no
* downscaling limitations with respect to pixel clock, return 1 as
* required core clock to represent that we have sufficient enough
* core clock to do maximum downscaling
*/
if (mem_to_mem)
return 1;
pclk = dispc_plane_pclk_rate(plane);
if (width > out_width)
return DIV_ROUND_UP(pclk, out_width) * width;
else
return pclk;
}
static int dispc_ovl_calc_scaling_24xx(enum omap_plane plane,
const struct omap_video_timings *mgr_timings,
u16 width, u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps,
int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
{
int error;
u16 in_width, in_height;
int min_factor = min(*decim_x, *decim_y);
const int maxsinglelinewidth =
dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
*five_taps = false;
do {
in_height = DIV_ROUND_UP(height, *decim_y);
in_width = DIV_ROUND_UP(width, *decim_x);
*core_clk = dispc.feat->calc_core_clk(plane, in_width,
in_height, out_width, out_height, mem_to_mem);
error = (in_width > maxsinglelinewidth || !*core_clk ||
*core_clk > dispc_core_clk_rate());
if (error) {
if (*decim_x == *decim_y) {
*decim_x = min_factor;
++*decim_y;
} else {
swap(*decim_x, *decim_y);
if (*decim_x < *decim_y)
++*decim_x;
}
}
} while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
if (in_width > maxsinglelinewidth) {
DSSERR("Cannot scale max input width exceeded");
return -EINVAL;
}
return 0;
}
static int dispc_ovl_calc_scaling_34xx(enum omap_plane plane,
const struct omap_video_timings *mgr_timings,
u16 width, u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps,
int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
{
int error;
u16 in_width, in_height;
int min_factor = min(*decim_x, *decim_y);
const int maxsinglelinewidth =
dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
do {
in_height = DIV_ROUND_UP(height, *decim_y);
in_width = DIV_ROUND_UP(width, *decim_x);
*core_clk = calc_core_clk_five_taps(plane, mgr_timings,
in_width, in_height, out_width, out_height, color_mode);
error = check_horiz_timing_omap3(plane, mgr_timings,
pos_x, in_width, in_height, out_width,
out_height);
if (in_width > maxsinglelinewidth)
if (in_height > out_height &&
in_height < out_height * 2)
*five_taps = false;
if (!*five_taps)
*core_clk = dispc.feat->calc_core_clk(plane, in_width,
in_height, out_width, out_height,
mem_to_mem);
error = (error || in_width > maxsinglelinewidth * 2 ||
(in_width > maxsinglelinewidth && *five_taps) ||
!*core_clk || *core_clk > dispc_core_clk_rate());
if (error) {
if (*decim_x == *decim_y) {
*decim_x = min_factor;
++*decim_y;
} else {
swap(*decim_x, *decim_y);
if (*decim_x < *decim_y)
++*decim_x;
}
}
} while (*decim_x <= *x_predecim && *decim_y <= *y_predecim && error);
if (check_horiz_timing_omap3(plane, mgr_timings, pos_x, width, height,
out_width, out_height)){
DSSERR("horizontal timing too tight\n");
return -EINVAL;
}
if (in_width > (maxsinglelinewidth * 2)) {
DSSERR("Cannot setup scaling");
DSSERR("width exceeds maximum width possible");
return -EINVAL;
}
if (in_width > maxsinglelinewidth && *five_taps) {
DSSERR("cannot setup scaling with five taps");
return -EINVAL;
}
return 0;
}
static int dispc_ovl_calc_scaling_44xx(enum omap_plane plane,
const struct omap_video_timings *mgr_timings,
u16 width, u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps,
int *x_predecim, int *y_predecim, int *decim_x, int *decim_y,
u16 pos_x, unsigned long *core_clk, bool mem_to_mem)
{
u16 in_width, in_width_max;
int decim_x_min = *decim_x;
u16 in_height = DIV_ROUND_UP(height, *decim_y);
const int maxsinglelinewidth =
dss_feat_get_param_max(FEAT_PARAM_LINEWIDTH);
unsigned long pclk = dispc_plane_pclk_rate(plane);
const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
if (mem_to_mem)
in_width_max = DIV_ROUND_UP(out_width, maxdownscale);
else
in_width_max = dispc_core_clk_rate() /
DIV_ROUND_UP(pclk, out_width);
*decim_x = DIV_ROUND_UP(width, in_width_max);
*decim_x = *decim_x > decim_x_min ? *decim_x : decim_x_min;
if (*decim_x > *x_predecim)
return -EINVAL;
do {
in_width = DIV_ROUND_UP(width, *decim_x);
} while (*decim_x <= *x_predecim &&
in_width > maxsinglelinewidth && ++*decim_x);
if (in_width > maxsinglelinewidth) {
DSSERR("Cannot scale width exceeds max line width");
return -EINVAL;
}
*core_clk = dispc.feat->calc_core_clk(plane, in_width, in_height,
out_width, out_height, mem_to_mem);
return 0;
}
static int dispc_ovl_calc_scaling(enum omap_plane plane,
enum omap_overlay_caps caps,
const struct omap_video_timings *mgr_timings,
u16 width, u16 height, u16 out_width, u16 out_height,
enum omap_color_mode color_mode, bool *five_taps,
int *x_predecim, int *y_predecim, u16 pos_x,
enum omap_dss_rotation_type rotation_type, bool mem_to_mem)
{
const int maxdownscale = dss_feat_get_param_max(FEAT_PARAM_DOWNSCALE);
const int max_decim_limit = 16;
unsigned long core_clk = 0;
int decim_x, decim_y, ret;
if (width == out_width && height == out_height)
return 0;
if ((caps & OMAP_DSS_OVL_CAP_SCALE) == 0)
return -EINVAL;
*x_predecim = max_decim_limit;
*y_predecim = (rotation_type == OMAP_DSS_ROT_TILER &&
dss_has_feature(FEAT_BURST_2D)) ? 2 : max_decim_limit;
if (color_mode == OMAP_DSS_COLOR_CLUT1 ||
color_mode == OMAP_DSS_COLOR_CLUT2 ||
color_mode == OMAP_DSS_COLOR_CLUT4 ||
color_mode == OMAP_DSS_COLOR_CLUT8) {
*x_predecim = 1;
*y_predecim = 1;
*five_taps = false;
return 0;
}
decim_x = DIV_ROUND_UP(DIV_ROUND_UP(width, out_width), maxdownscale);
decim_y = DIV_ROUND_UP(DIV_ROUND_UP(height, out_height), maxdownscale);
if (decim_x > *x_predecim || out_width > width * 8)
return -EINVAL;
if (decim_y > *y_predecim || out_height > height * 8)
return -EINVAL;
ret = dispc.feat->calc_scaling(plane, mgr_timings, width, height,
out_width, out_height, color_mode, five_taps,
x_predecim, y_predecim, &decim_x, &decim_y, pos_x, &core_clk,
mem_to_mem);
if (ret)
return ret;
DSSDBG("required core clk rate = %lu Hz\n", core_clk);
DSSDBG("current core clk rate = %lu Hz\n", dispc_core_clk_rate());
if (!core_clk || core_clk > dispc_core_clk_rate()) {
DSSERR("failed to set up scaling, "
"required core clk rate = %lu Hz, "
"current core clk rate = %lu Hz\n",
core_clk, dispc_core_clk_rate());
return -EINVAL;
}
*x_predecim = decim_x;
*y_predecim = decim_y;
return 0;
}
static int dispc_ovl_setup_common(enum omap_plane plane,
enum omap_overlay_caps caps, u32 paddr, u32 p_uv_addr,
u16 screen_width, int pos_x, int pos_y, u16 width, u16 height,
u16 out_width, u16 out_height, enum omap_color_mode color_mode,
u8 rotation, bool mirror, u8 zorder, u8 pre_mult_alpha,
u8 global_alpha, enum omap_dss_rotation_type rotation_type,
bool replication, const struct omap_video_timings *mgr_timings,
bool mem_to_mem)
{
bool five_taps = true;
bool fieldmode = 0;
int r, cconv = 0;
unsigned offset0, offset1;
s32 row_inc;
s32 pix_inc;
u16 frame_height = height;
unsigned int field_offset = 0;
u16 in_height = height;
u16 in_width = width;
int x_predecim = 1, y_predecim = 1;
bool ilace = mgr_timings->interlace;
if (paddr == 0)
return -EINVAL;
out_width = out_width == 0 ? width : out_width;
out_height = out_height == 0 ? height : out_height;
if (ilace && height == out_height)
fieldmode = 1;
if (ilace) {
if (fieldmode)
in_height /= 2;
pos_y /= 2;
out_height /= 2;
DSSDBG("adjusting for ilace: height %d, pos_y %d, "
"out_height %d\n", in_height, pos_y,
out_height);
}
if (!dss_feat_color_mode_supported(plane, color_mode))
return -EINVAL;
r = dispc_ovl_calc_scaling(plane, caps, mgr_timings, in_width,
in_height, out_width, out_height, color_mode,
&five_taps, &x_predecim, &y_predecim, pos_x,
rotation_type, mem_to_mem);
if (r)
return r;
in_width = DIV_ROUND_UP(in_width, x_predecim);
in_height = DIV_ROUND_UP(in_height, y_predecim);
if (color_mode == OMAP_DSS_COLOR_YUV2 ||
color_mode == OMAP_DSS_COLOR_UYVY ||
color_mode == OMAP_DSS_COLOR_NV12)
cconv = 1;
if (ilace && !fieldmode) {
/*
* when downscaling the bottom field may have to start several
* source lines below the top field. Unfortunately ACCUI
* registers will only hold the fractional part of the offset
* so the integer part must be added to the base address of the
* bottom field.
*/
if (!in_height || in_height == out_height)
field_offset = 0;
else
field_offset = in_height / out_height / 2;
}
/* Fields are independent but interleaved in memory. */
if (fieldmode)
field_offset = 1;
offset0 = 0;
offset1 = 0;
row_inc = 0;
pix_inc = 0;
if (rotation_type == OMAP_DSS_ROT_TILER)
calc_tiler_rotation_offset(screen_width, in_width,
color_mode, fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc,
x_predecim, y_predecim);
else if (rotation_type == OMAP_DSS_ROT_DMA)
calc_dma_rotation_offset(rotation, mirror,
screen_width, in_width, frame_height,
color_mode, fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc,
x_predecim, y_predecim);
else
calc_vrfb_rotation_offset(rotation, mirror,
screen_width, in_width, frame_height,
color_mode, fieldmode, field_offset,
&offset0, &offset1, &row_inc, &pix_inc,
x_predecim, y_predecim);
DSSDBG("offset0 %u, offset1 %u, row_inc %d, pix_inc %d\n",
offset0, offset1, row_inc, pix_inc);
dispc_ovl_set_color_mode(plane, color_mode);
dispc_ovl_configure_burst_type(plane, rotation_type);
dispc_ovl_set_ba0(plane, paddr + offset0);
dispc_ovl_set_ba1(plane, paddr + offset1);
if (OMAP_DSS_COLOR_NV12 == color_mode) {
dispc_ovl_set_ba0_uv(plane, p_uv_addr + offset0);
dispc_ovl_set_ba1_uv(plane, p_uv_addr + offset1);
}
dispc_ovl_set_row_inc(plane, row_inc);
dispc_ovl_set_pix_inc(plane, pix_inc);
DSSDBG("%d,%d %dx%d -> %dx%d\n", pos_x, pos_y, in_width,
in_height, out_width, out_height);
dispc_ovl_set_pos(plane, caps, pos_x, pos_y);
dispc_ovl_set_input_size(plane, in_width, in_height);
if (caps & OMAP_DSS_OVL_CAP_SCALE) {
dispc_ovl_set_scaling(plane, in_width, in_height, out_width,
out_height, ilace, five_taps, fieldmode,
color_mode, rotation);
dispc_ovl_set_output_size(plane, out_width, out_height);
dispc_ovl_set_vid_color_conv(plane, cconv);
}
dispc_ovl_set_rotation_attrs(plane, rotation, mirror, color_mode);
dispc_ovl_set_zorder(plane, caps, zorder);
dispc_ovl_set_pre_mult_alpha(plane, caps, pre_mult_alpha);
dispc_ovl_setup_global_alpha(plane, caps, global_alpha);
dispc_ovl_enable_replication(plane, caps, replication);
return 0;
}
int dispc_ovl_setup(enum omap_plane plane, const struct omap_overlay_info *oi,
bool replication, const struct omap_video_timings *mgr_timings,
bool mem_to_mem)
{
int r;
struct omap_overlay *ovl = omap_dss_get_overlay(plane);
enum omap_channel channel;
channel = dispc_ovl_get_channel_out(plane);
DSSDBG("dispc_ovl_setup %d, pa %x, pa_uv %x, sw %d, %d,%d, %dx%d -> "
"%dx%d, cmode %x, rot %d, mir %d, chan %d repl %d\n",
plane, oi->paddr, oi->p_uv_addr, oi->screen_width, oi->pos_x,
oi->pos_y, oi->width, oi->height, oi->out_width, oi->out_height,
oi->color_mode, oi->rotation, oi->mirror, channel, replication);
r = dispc_ovl_setup_common(plane, ovl->caps, oi->paddr, oi->p_uv_addr,
oi->screen_width, oi->pos_x, oi->pos_y, oi->width, oi->height,
oi->out_width, oi->out_height, oi->color_mode, oi->rotation,
oi->mirror, oi->zorder, oi->pre_mult_alpha, oi->global_alpha,
oi->rotation_type, replication, mgr_timings, mem_to_mem);
return r;
}
int dispc_wb_setup(const struct omap_dss_writeback_info *wi,
bool mem_to_mem, const struct omap_video_timings *mgr_timings)
{
int r;
u32 l;
enum omap_plane plane = OMAP_DSS_WB;
const int pos_x = 0, pos_y = 0;
const u8 zorder = 0, global_alpha = 0;
const bool replication = false;
bool truncation;
int in_width = mgr_timings->x_res;
int in_height = mgr_timings->y_res;
enum omap_overlay_caps caps =
OMAP_DSS_OVL_CAP_SCALE | OMAP_DSS_OVL_CAP_PRE_MULT_ALPHA;
DSSDBG("dispc_wb_setup, pa %x, pa_uv %x, %d,%d -> %dx%d, cmode %x, "
"rot %d, mir %d\n", wi->paddr, wi->p_uv_addr, in_width,
in_height, wi->width, wi->height, wi->color_mode, wi->rotation,
wi->mirror);
r = dispc_ovl_setup_common(plane, caps, wi->paddr, wi->p_uv_addr,
wi->buf_width, pos_x, pos_y, in_width, in_height, wi->width,
wi->height, wi->color_mode, wi->rotation, wi->mirror, zorder,
wi->pre_mult_alpha, global_alpha, wi->rotation_type,
replication, mgr_timings, mem_to_mem);
switch (wi->color_mode) {
case OMAP_DSS_COLOR_RGB16:
case OMAP_DSS_COLOR_RGB24P:
case OMAP_DSS_COLOR_ARGB16:
case OMAP_DSS_COLOR_RGBA16:
case OMAP_DSS_COLOR_RGB12U:
case OMAP_DSS_COLOR_ARGB16_1555:
case OMAP_DSS_COLOR_XRGB16_1555:
case OMAP_DSS_COLOR_RGBX16:
truncation = true;
break;
default:
truncation = false;
break;
}
/* setup extra DISPC_WB_ATTRIBUTES */
l = dispc_read_reg(DISPC_OVL_ATTRIBUTES(plane));
l = FLD_MOD(l, truncation, 10, 10); /* TRUNCATIONENABLE */
l = FLD_MOD(l, mem_to_mem, 19, 19); /* WRITEBACKMODE */
dispc_write_reg(DISPC_OVL_ATTRIBUTES(plane), l);
return r;
}
int dispc_ovl_enable(enum omap_plane plane, bool enable)
{
DSSDBG("dispc_enable_plane %d, %d\n", plane, enable);
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
return 0;
}
static void dispc_disable_isr(void *data, u32 mask)
{
struct completion *compl = data;
complete(compl);
}
static void _enable_lcd_out(enum omap_channel channel, bool enable)
{
mgr_fld_write(channel, DISPC_MGR_FLD_ENABLE, enable);
/* flush posted write */
mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
}
static void dispc_mgr_enable_lcd_out(enum omap_channel channel, bool enable)
{
struct completion frame_done_completion;
bool is_on;
int r;
u32 irq;
/* When we disable LCD output, we need to wait until frame is done.
* Otherwise the DSS is still working, and turning off the clocks
* prevents DSS from going to OFF mode */
is_on = mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
irq = mgr_desc[channel].framedone_irq;
if (!enable && is_on) {
init_completion(&frame_done_completion);
r = omap_dispc_register_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to register FRAMEDONE isr\n");
}
_enable_lcd_out(channel, enable);
if (!enable && is_on) {
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for FRAME DONE\n");
r = omap_dispc_unregister_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to unregister FRAMEDONE isr\n");
}
}
static void _enable_digit_out(bool enable)
{
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 1, 1);
/* flush posted write */
dispc_read_reg(DISPC_CONTROL);
}
static void dispc_mgr_enable_digit_out(bool enable)
{
struct completion frame_done_completion;
enum dss_hdmi_venc_clk_source_select src;
int r, i;
u32 irq_mask;
int num_irqs;
if (REG_GET(DISPC_CONTROL, 1, 1) == enable)
return;
src = dss_get_hdmi_venc_clk_source();
if (enable) {
unsigned long flags;
/* When we enable digit output, we'll get an extra digit
* sync lost interrupt, that we need to ignore */
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask &= ~DISPC_IRQ_SYNC_LOST_DIGIT;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
/* When we disable digit output, we need to wait until fields are done.
* Otherwise the DSS is still working, and turning off the clocks
* prevents DSS from going to OFF mode. And when enabling, we need to
* wait for the extra sync losts */
init_completion(&frame_done_completion);
if (src == DSS_HDMI_M_PCLK && enable == false) {
irq_mask = DISPC_IRQ_FRAMEDONETV;
num_irqs = 1;
} else {
irq_mask = DISPC_IRQ_EVSYNC_EVEN | DISPC_IRQ_EVSYNC_ODD;
/* XXX I understand from TRM that we should only wait for the
* current field to complete. But it seems we have to wait for
* both fields */
num_irqs = 2;
}
r = omap_dispc_register_isr(dispc_disable_isr, &frame_done_completion,
irq_mask);
if (r)
DSSERR("failed to register %x isr\n", irq_mask);
_enable_digit_out(enable);
for (i = 0; i < num_irqs; ++i) {
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for digit out to %s\n",
enable ? "start" : "stop");
}
r = omap_dispc_unregister_isr(dispc_disable_isr, &frame_done_completion,
irq_mask);
if (r)
DSSERR("failed to unregister %x isr\n", irq_mask);
if (enable) {
unsigned long flags;
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST_DIGIT;
dispc_write_reg(DISPC_IRQSTATUS, DISPC_IRQ_SYNC_LOST_DIGIT);
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
}
bool dispc_mgr_is_enabled(enum omap_channel channel)
{
return !!mgr_fld_read(channel, DISPC_MGR_FLD_ENABLE);
}
void dispc_mgr_enable(enum omap_channel channel, bool enable)
{
if (dss_mgr_is_lcd(channel))
dispc_mgr_enable_lcd_out(channel, enable);
else if (channel == OMAP_DSS_CHANNEL_DIGIT)
dispc_mgr_enable_digit_out(enable);
else
BUG();
}
void dispc_wb_enable(bool enable)
{
enum omap_plane plane = OMAP_DSS_WB;
struct completion frame_done_completion;
bool is_on;
int r;
u32 irq;
is_on = REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0);
irq = DISPC_IRQ_FRAMEDONEWB;
if (!enable && is_on) {
init_completion(&frame_done_completion);
r = omap_dispc_register_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to register FRAMEDONEWB isr\n");
}
REG_FLD_MOD(DISPC_OVL_ATTRIBUTES(plane), enable ? 1 : 0, 0, 0);
if (!enable && is_on) {
if (!wait_for_completion_timeout(&frame_done_completion,
msecs_to_jiffies(100)))
DSSERR("timeout waiting for FRAMEDONEWB\n");
r = omap_dispc_unregister_isr(dispc_disable_isr,
&frame_done_completion, irq);
if (r)
DSSERR("failed to unregister FRAMEDONEWB isr\n");
}
}
bool dispc_wb_is_enabled(void)
{
enum omap_plane plane = OMAP_DSS_WB;
return REG_GET(DISPC_OVL_ATTRIBUTES(plane), 0, 0);
}
void dispc_lcd_enable_signal_polarity(bool act_high)
{
if (!dss_has_feature(FEAT_LCDENABLEPOL))
return;
REG_FLD_MOD(DISPC_CONTROL, act_high ? 1 : 0, 29, 29);
}
void dispc_lcd_enable_signal(bool enable)
{
if (!dss_has_feature(FEAT_LCDENABLESIGNAL))
return;
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 28, 28);
}
void dispc_pck_free_enable(bool enable)
{
if (!dss_has_feature(FEAT_PCKFREEENABLE))
return;
REG_FLD_MOD(DISPC_CONTROL, enable ? 1 : 0, 27, 27);
}
void dispc_mgr_enable_fifohandcheck(enum omap_channel channel, bool enable)
{
mgr_fld_write(channel, DISPC_MGR_FLD_FIFOHANDCHECK, enable);
}
void dispc_mgr_set_lcd_type_tft(enum omap_channel channel)
{
mgr_fld_write(channel, DISPC_MGR_FLD_STNTFT, 1);
}
void dispc_set_loadmode(enum omap_dss_load_mode mode)
{
REG_FLD_MOD(DISPC_CONFIG, mode, 2, 1);
}
static void dispc_mgr_set_default_color(enum omap_channel channel, u32 color)
{
dispc_write_reg(DISPC_DEFAULT_COLOR(channel), color);
}
static void dispc_mgr_set_trans_key(enum omap_channel ch,
enum omap_dss_trans_key_type type,
u32 trans_key)
{
mgr_fld_write(ch, DISPC_MGR_FLD_TCKSELECTION, type);
dispc_write_reg(DISPC_TRANS_COLOR(ch), trans_key);
}
static void dispc_mgr_enable_trans_key(enum omap_channel ch, bool enable)
{
mgr_fld_write(ch, DISPC_MGR_FLD_TCKENABLE, enable);
}
static void dispc_mgr_enable_alpha_fixed_zorder(enum omap_channel ch,
bool enable)
{
if (!dss_has_feature(FEAT_ALPHA_FIXED_ZORDER))
return;
if (ch == OMAP_DSS_CHANNEL_LCD)
REG_FLD_MOD(DISPC_CONFIG, enable, 18, 18);
else if (ch == OMAP_DSS_CHANNEL_DIGIT)
REG_FLD_MOD(DISPC_CONFIG, enable, 19, 19);
}
void dispc_mgr_setup(enum omap_channel channel,
struct omap_overlay_manager_info *info)
{
dispc_mgr_set_default_color(channel, info->default_color);
dispc_mgr_set_trans_key(channel, info->trans_key_type, info->trans_key);
dispc_mgr_enable_trans_key(channel, info->trans_enabled);
dispc_mgr_enable_alpha_fixed_zorder(channel,
info->partial_alpha_enabled);
if (dss_has_feature(FEAT_CPR)) {
dispc_mgr_enable_cpr(channel, info->cpr_enable);
dispc_mgr_set_cpr_coef(channel, &info->cpr_coefs);
}
}
void dispc_mgr_set_tft_data_lines(enum omap_channel channel, u8 data_lines)
{
int code;
switch (data_lines) {
case 12:
code = 0;
break;
case 16:
code = 1;
break;
case 18:
code = 2;
break;
case 24:
code = 3;
break;
default:
BUG();
return;
}
mgr_fld_write(channel, DISPC_MGR_FLD_TFTDATALINES, code);
}
void dispc_mgr_set_io_pad_mode(enum dss_io_pad_mode mode)
{
u32 l;
int gpout0, gpout1;
switch (mode) {
case DSS_IO_PAD_MODE_RESET:
gpout0 = 0;
gpout1 = 0;
break;
case DSS_IO_PAD_MODE_RFBI:
gpout0 = 1;
gpout1 = 0;
break;
case DSS_IO_PAD_MODE_BYPASS:
gpout0 = 1;
gpout1 = 1;
break;
default:
BUG();
return;
}
l = dispc_read_reg(DISPC_CONTROL);
l = FLD_MOD(l, gpout0, 15, 15);
l = FLD_MOD(l, gpout1, 16, 16);
dispc_write_reg(DISPC_CONTROL, l);
}
void dispc_mgr_enable_stallmode(enum omap_channel channel, bool enable)
{
mgr_fld_write(channel, DISPC_MGR_FLD_STALLMODE, enable);
}
static bool _dispc_mgr_size_ok(u16 width, u16 height)
{
return width <= dss_feat_get_param_max(FEAT_PARAM_MGR_WIDTH) &&
height <= dss_feat_get_param_max(FEAT_PARAM_MGR_HEIGHT);
}
static bool _dispc_lcd_timings_ok(int hsw, int hfp, int hbp,
int vsw, int vfp, int vbp)
{
if (hsw < 1 || hsw > dispc.feat->sw_max ||
hfp < 1 || hfp > dispc.feat->hp_max ||
hbp < 1 || hbp > dispc.feat->hp_max ||
vsw < 1 || vsw > dispc.feat->sw_max ||
vfp < 0 || vfp > dispc.feat->vp_max ||
vbp < 0 || vbp > dispc.feat->vp_max)
return false;
return true;
}
bool dispc_mgr_timings_ok(enum omap_channel channel,
const struct omap_video_timings *timings)
{
bool timings_ok;
timings_ok = _dispc_mgr_size_ok(timings->x_res, timings->y_res);
if (dss_mgr_is_lcd(channel))
timings_ok = timings_ok && _dispc_lcd_timings_ok(timings->hsw,
timings->hfp, timings->hbp,
timings->vsw, timings->vfp,
timings->vbp);
return timings_ok;
}
static void _dispc_mgr_set_lcd_timings(enum omap_channel channel, int hsw,
int hfp, int hbp, int vsw, int vfp, int vbp,
enum omap_dss_signal_level vsync_level,
enum omap_dss_signal_level hsync_level,
enum omap_dss_signal_edge data_pclk_edge,
enum omap_dss_signal_level de_level,
enum omap_dss_signal_edge sync_pclk_edge)
{
u32 timing_h, timing_v, l;
bool onoff, rf, ipc;
timing_h = FLD_VAL(hsw-1, dispc.feat->sw_start, 0) |
FLD_VAL(hfp-1, dispc.feat->fp_start, 8) |
FLD_VAL(hbp-1, dispc.feat->bp_start, 20);
timing_v = FLD_VAL(vsw-1, dispc.feat->sw_start, 0) |
FLD_VAL(vfp, dispc.feat->fp_start, 8) |
FLD_VAL(vbp, dispc.feat->bp_start, 20);
dispc_write_reg(DISPC_TIMING_H(channel), timing_h);
dispc_write_reg(DISPC_TIMING_V(channel), timing_v);
switch (data_pclk_edge) {
case OMAPDSS_DRIVE_SIG_RISING_EDGE:
ipc = false;
break;
case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
ipc = true;
break;
case OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES:
default:
BUG();
}
switch (sync_pclk_edge) {
case OMAPDSS_DRIVE_SIG_OPPOSITE_EDGES:
onoff = false;
rf = false;
break;
case OMAPDSS_DRIVE_SIG_FALLING_EDGE:
onoff = true;
rf = false;
break;
case OMAPDSS_DRIVE_SIG_RISING_EDGE:
onoff = true;
rf = true;
break;
default:
BUG();
};
l = dispc_read_reg(DISPC_POL_FREQ(channel));
l |= FLD_VAL(onoff, 17, 17);
l |= FLD_VAL(rf, 16, 16);
l |= FLD_VAL(de_level, 15, 15);
l |= FLD_VAL(ipc, 14, 14);
l |= FLD_VAL(hsync_level, 13, 13);
l |= FLD_VAL(vsync_level, 12, 12);
dispc_write_reg(DISPC_POL_FREQ(channel), l);
}
/* change name to mode? */
void dispc_mgr_set_timings(enum omap_channel channel,
struct omap_video_timings *timings)
{
unsigned xtot, ytot;
unsigned long ht, vt;
struct omap_video_timings t = *timings;
DSSDBG("channel %d xres %u yres %u\n", channel, t.x_res, t.y_res);
if (!dispc_mgr_timings_ok(channel, &t)) {
BUG();
return;
}
if (dss_mgr_is_lcd(channel)) {
_dispc_mgr_set_lcd_timings(channel, t.hsw, t.hfp, t.hbp, t.vsw,
t.vfp, t.vbp, t.vsync_level, t.hsync_level,
t.data_pclk_edge, t.de_level, t.sync_pclk_edge);
xtot = t.x_res + t.hfp + t.hsw + t.hbp;
ytot = t.y_res + t.vfp + t.vsw + t.vbp;
ht = (timings->pixel_clock * 1000) / xtot;
vt = (timings->pixel_clock * 1000) / xtot / ytot;
DSSDBG("pck %u\n", timings->pixel_clock);
DSSDBG("hsw %d hfp %d hbp %d vsw %d vfp %d vbp %d\n",
t.hsw, t.hfp, t.hbp, t.vsw, t.vfp, t.vbp);
DSSDBG("vsync_level %d hsync_level %d data_pclk_edge %d de_level %d sync_pclk_edge %d\n",
t.vsync_level, t.hsync_level, t.data_pclk_edge,
t.de_level, t.sync_pclk_edge);
DSSDBG("hsync %luHz, vsync %luHz\n", ht, vt);
} else {
if (t.interlace == true)
t.y_res /= 2;
}
dispc_mgr_set_size(channel, t.x_res, t.y_res);
}
static void dispc_mgr_set_lcd_divisor(enum omap_channel channel, u16 lck_div,
u16 pck_div)
{
BUG_ON(lck_div < 1);
BUG_ON(pck_div < 1);
dispc_write_reg(DISPC_DIVISORo(channel),
FLD_VAL(lck_div, 23, 16) | FLD_VAL(pck_div, 7, 0));
}
static void dispc_mgr_get_lcd_divisor(enum omap_channel channel, int *lck_div,
int *pck_div)
{
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
*lck_div = FLD_GET(l, 23, 16);
*pck_div = FLD_GET(l, 7, 0);
}
unsigned long dispc_fclk_rate(void)
{
struct platform_device *dsidev;
unsigned long r = 0;
switch (dss_get_dispc_clk_source()) {
case OMAP_DSS_CLK_SRC_FCK:
r = clk_get_rate(dispc.dss_clk);
break;
case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(0);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(1);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
default:
BUG();
return 0;
}
return r;
}
unsigned long dispc_mgr_lclk_rate(enum omap_channel channel)
{
struct platform_device *dsidev;
int lcd;
unsigned long r;
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
lcd = FLD_GET(l, 23, 16);
switch (dss_get_lcd_clk_source(channel)) {
case OMAP_DSS_CLK_SRC_FCK:
r = clk_get_rate(dispc.dss_clk);
break;
case OMAP_DSS_CLK_SRC_DSI_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(0);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
case OMAP_DSS_CLK_SRC_DSI2_PLL_HSDIV_DISPC:
dsidev = dsi_get_dsidev_from_id(1);
r = dsi_get_pll_hsdiv_dispc_rate(dsidev);
break;
default:
BUG();
return 0;
}
return r / lcd;
}
unsigned long dispc_mgr_pclk_rate(enum omap_channel channel)
{
unsigned long r;
if (dss_mgr_is_lcd(channel)) {
int pcd;
u32 l;
l = dispc_read_reg(DISPC_DIVISORo(channel));
pcd = FLD_GET(l, 7, 0);
r = dispc_mgr_lclk_rate(channel);
return r / pcd;
} else {
enum dss_hdmi_venc_clk_source_select source;
source = dss_get_hdmi_venc_clk_source();
switch (source) {
case DSS_VENC_TV_CLK:
return venc_get_pixel_clock();
case DSS_HDMI_M_PCLK:
return hdmi_get_pixel_clock();
default:
BUG();
return 0;
}
}
}
unsigned long dispc_core_clk_rate(void)
{
int lcd;
unsigned long fclk = dispc_fclk_rate();
if (dss_has_feature(FEAT_CORE_CLK_DIV))
lcd = REG_GET(DISPC_DIVISOR, 23, 16);
else
lcd = REG_GET(DISPC_DIVISORo(OMAP_DSS_CHANNEL_LCD), 23, 16);
return fclk / lcd;
}
static unsigned long dispc_plane_pclk_rate(enum omap_plane plane)
{
enum omap_channel channel = dispc_ovl_get_channel_out(plane);
return dispc_mgr_pclk_rate(channel);
}
static unsigned long dispc_plane_lclk_rate(enum omap_plane plane)
{
enum omap_channel channel = dispc_ovl_get_channel_out(plane);
if (dss_mgr_is_lcd(channel))
return dispc_mgr_lclk_rate(channel);
else
return dispc_fclk_rate();
}
static void dispc_dump_clocks_channel(struct seq_file *s, enum omap_channel channel)
{
int lcd, pcd;
enum omap_dss_clk_source lcd_clk_src;
seq_printf(s, "- %s -\n", mgr_desc[channel].name);
lcd_clk_src = dss_get_lcd_clk_source(channel);
seq_printf(s, "%s clk source = %s (%s)\n", mgr_desc[channel].name,
dss_get_generic_clk_source_name(lcd_clk_src),
dss_feat_get_clk_source_name(lcd_clk_src));
dispc_mgr_get_lcd_divisor(channel, &lcd, &pcd);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
dispc_mgr_lclk_rate(channel), lcd);
seq_printf(s, "pck\t\t%-16lupck div\t%u\n",
dispc_mgr_pclk_rate(channel), pcd);
}
void dispc_dump_clocks(struct seq_file *s)
{
int lcd;
u32 l;
enum omap_dss_clk_source dispc_clk_src = dss_get_dispc_clk_source();
if (dispc_runtime_get())
return;
seq_printf(s, "- DISPC -\n");
seq_printf(s, "dispc fclk source = %s (%s)\n",
dss_get_generic_clk_source_name(dispc_clk_src),
dss_feat_get_clk_source_name(dispc_clk_src));
seq_printf(s, "fck\t\t%-16lu\n", dispc_fclk_rate());
if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
seq_printf(s, "- DISPC-CORE-CLK -\n");
l = dispc_read_reg(DISPC_DIVISOR);
lcd = FLD_GET(l, 23, 16);
seq_printf(s, "lck\t\t%-16lulck div\t%u\n",
(dispc_fclk_rate()/lcd), lcd);
}
dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD);
if (dss_has_feature(FEAT_MGR_LCD2))
dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD2);
if (dss_has_feature(FEAT_MGR_LCD3))
dispc_dump_clocks_channel(s, OMAP_DSS_CHANNEL_LCD3);
dispc_runtime_put();
}
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
void dispc_dump_irqs(struct seq_file *s)
{
unsigned long flags;
struct dispc_irq_stats stats;
spin_lock_irqsave(&dispc.irq_stats_lock, flags);
stats = dispc.irq_stats;
memset(&dispc.irq_stats, 0, sizeof(dispc.irq_stats));
dispc.irq_stats.last_reset = jiffies;
spin_unlock_irqrestore(&dispc.irq_stats_lock, flags);
seq_printf(s, "period %u ms\n",
jiffies_to_msecs(jiffies - stats.last_reset));
seq_printf(s, "irqs %d\n", stats.irq_count);
#define PIS(x) \
seq_printf(s, "%-20s %10d\n", #x, stats.irqs[ffs(DISPC_IRQ_##x)-1]);
PIS(FRAMEDONE);
PIS(VSYNC);
PIS(EVSYNC_EVEN);
PIS(EVSYNC_ODD);
PIS(ACBIAS_COUNT_STAT);
PIS(PROG_LINE_NUM);
PIS(GFX_FIFO_UNDERFLOW);
PIS(GFX_END_WIN);
PIS(PAL_GAMMA_MASK);
PIS(OCP_ERR);
PIS(VID1_FIFO_UNDERFLOW);
PIS(VID1_END_WIN);
PIS(VID2_FIFO_UNDERFLOW);
PIS(VID2_END_WIN);
if (dss_feat_get_num_ovls() > 3) {
PIS(VID3_FIFO_UNDERFLOW);
PIS(VID3_END_WIN);
}
PIS(SYNC_LOST);
PIS(SYNC_LOST_DIGIT);
PIS(WAKEUP);
if (dss_has_feature(FEAT_MGR_LCD2)) {
PIS(FRAMEDONE2);
PIS(VSYNC2);
PIS(ACBIAS_COUNT_STAT2);
PIS(SYNC_LOST2);
}
if (dss_has_feature(FEAT_MGR_LCD3)) {
PIS(FRAMEDONE3);
PIS(VSYNC3);
PIS(ACBIAS_COUNT_STAT3);
PIS(SYNC_LOST3);
}
#undef PIS
}
#endif
static void dispc_dump_regs(struct seq_file *s)
{
int i, j;
const char *mgr_names[] = {
[OMAP_DSS_CHANNEL_LCD] = "LCD",
[OMAP_DSS_CHANNEL_DIGIT] = "TV",
[OMAP_DSS_CHANNEL_LCD2] = "LCD2",
[OMAP_DSS_CHANNEL_LCD3] = "LCD3",
};
const char *ovl_names[] = {
[OMAP_DSS_GFX] = "GFX",
[OMAP_DSS_VIDEO1] = "VID1",
[OMAP_DSS_VIDEO2] = "VID2",
[OMAP_DSS_VIDEO3] = "VID3",
};
const char **p_names;
#define DUMPREG(r) seq_printf(s, "%-50s %08x\n", #r, dispc_read_reg(r))
if (dispc_runtime_get())
return;
/* DISPC common registers */
DUMPREG(DISPC_REVISION);
DUMPREG(DISPC_SYSCONFIG);
DUMPREG(DISPC_SYSSTATUS);
DUMPREG(DISPC_IRQSTATUS);
DUMPREG(DISPC_IRQENABLE);
DUMPREG(DISPC_CONTROL);
DUMPREG(DISPC_CONFIG);
DUMPREG(DISPC_CAPABLE);
DUMPREG(DISPC_LINE_STATUS);
DUMPREG(DISPC_LINE_NUMBER);
if (dss_has_feature(FEAT_ALPHA_FIXED_ZORDER) ||
dss_has_feature(FEAT_ALPHA_FREE_ZORDER))
DUMPREG(DISPC_GLOBAL_ALPHA);
if (dss_has_feature(FEAT_MGR_LCD2)) {
DUMPREG(DISPC_CONTROL2);
DUMPREG(DISPC_CONFIG2);
}
if (dss_has_feature(FEAT_MGR_LCD3)) {
DUMPREG(DISPC_CONTROL3);
DUMPREG(DISPC_CONFIG3);
}
#undef DUMPREG
#define DISPC_REG(i, name) name(i)
#define DUMPREG(i, r) seq_printf(s, "%s(%s)%*s %08x\n", #r, p_names[i], \
48 - strlen(#r) - strlen(p_names[i]), " ", \
dispc_read_reg(DISPC_REG(i, r)))
p_names = mgr_names;
/* DISPC channel specific registers */
for (i = 0; i < dss_feat_get_num_mgrs(); i++) {
DUMPREG(i, DISPC_DEFAULT_COLOR);
DUMPREG(i, DISPC_TRANS_COLOR);
DUMPREG(i, DISPC_SIZE_MGR);
if (i == OMAP_DSS_CHANNEL_DIGIT)
continue;
DUMPREG(i, DISPC_DEFAULT_COLOR);
DUMPREG(i, DISPC_TRANS_COLOR);
DUMPREG(i, DISPC_TIMING_H);
DUMPREG(i, DISPC_TIMING_V);
DUMPREG(i, DISPC_POL_FREQ);
DUMPREG(i, DISPC_DIVISORo);
DUMPREG(i, DISPC_SIZE_MGR);
DUMPREG(i, DISPC_DATA_CYCLE1);
DUMPREG(i, DISPC_DATA_CYCLE2);
DUMPREG(i, DISPC_DATA_CYCLE3);
if (dss_has_feature(FEAT_CPR)) {
DUMPREG(i, DISPC_CPR_COEF_R);
DUMPREG(i, DISPC_CPR_COEF_G);
DUMPREG(i, DISPC_CPR_COEF_B);
}
}
p_names = ovl_names;
for (i = 0; i < dss_feat_get_num_ovls(); i++) {
DUMPREG(i, DISPC_OVL_BA0);
DUMPREG(i, DISPC_OVL_BA1);
DUMPREG(i, DISPC_OVL_POSITION);
DUMPREG(i, DISPC_OVL_SIZE);
DUMPREG(i, DISPC_OVL_ATTRIBUTES);
DUMPREG(i, DISPC_OVL_FIFO_THRESHOLD);
DUMPREG(i, DISPC_OVL_FIFO_SIZE_STATUS);
DUMPREG(i, DISPC_OVL_ROW_INC);
DUMPREG(i, DISPC_OVL_PIXEL_INC);
if (dss_has_feature(FEAT_PRELOAD))
DUMPREG(i, DISPC_OVL_PRELOAD);
if (i == OMAP_DSS_GFX) {
DUMPREG(i, DISPC_OVL_WINDOW_SKIP);
DUMPREG(i, DISPC_OVL_TABLE_BA);
continue;
}
DUMPREG(i, DISPC_OVL_FIR);
DUMPREG(i, DISPC_OVL_PICTURE_SIZE);
DUMPREG(i, DISPC_OVL_ACCU0);
DUMPREG(i, DISPC_OVL_ACCU1);
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
DUMPREG(i, DISPC_OVL_BA0_UV);
DUMPREG(i, DISPC_OVL_BA1_UV);
DUMPREG(i, DISPC_OVL_FIR2);
DUMPREG(i, DISPC_OVL_ACCU2_0);
DUMPREG(i, DISPC_OVL_ACCU2_1);
}
if (dss_has_feature(FEAT_ATTR2))
DUMPREG(i, DISPC_OVL_ATTRIBUTES2);
if (dss_has_feature(FEAT_PRELOAD))
DUMPREG(i, DISPC_OVL_PRELOAD);
}
#undef DISPC_REG
#undef DUMPREG
#define DISPC_REG(plane, name, i) name(plane, i)
#define DUMPREG(plane, name, i) \
seq_printf(s, "%s_%d(%s)%*s %08x\n", #name, i, p_names[plane], \
46 - strlen(#name) - strlen(p_names[plane]), " ", \
dispc_read_reg(DISPC_REG(plane, name, i)))
/* Video pipeline coefficient registers */
/* start from OMAP_DSS_VIDEO1 */
for (i = 1; i < dss_feat_get_num_ovls(); i++) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_H, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_HV, j);
for (j = 0; j < 5; j++)
DUMPREG(i, DISPC_OVL_CONV_COEF, j);
if (dss_has_feature(FEAT_FIR_COEF_V)) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_V, j);
}
if (dss_has_feature(FEAT_HANDLE_UV_SEPARATE)) {
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_H2, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_HV2, j);
for (j = 0; j < 8; j++)
DUMPREG(i, DISPC_OVL_FIR_COEF_V2, j);
}
}
dispc_runtime_put();
#undef DISPC_REG
#undef DUMPREG
}
/* with fck as input clock rate, find dispc dividers that produce req_pck */
void dispc_find_clk_divs(unsigned long req_pck, unsigned long fck,
struct dispc_clock_info *cinfo)
{
u16 pcd_min, pcd_max;
unsigned long best_pck;
u16 best_ld, cur_ld;
u16 best_pd, cur_pd;
pcd_min = dss_feat_get_param_min(FEAT_PARAM_DSS_PCD);
pcd_max = dss_feat_get_param_max(FEAT_PARAM_DSS_PCD);
best_pck = 0;
best_ld = 0;
best_pd = 0;
for (cur_ld = 1; cur_ld <= 255; ++cur_ld) {
unsigned long lck = fck / cur_ld;
for (cur_pd = pcd_min; cur_pd <= pcd_max; ++cur_pd) {
unsigned long pck = lck / cur_pd;
long old_delta = abs(best_pck - req_pck);
long new_delta = abs(pck - req_pck);
if (best_pck == 0 || new_delta < old_delta) {
best_pck = pck;
best_ld = cur_ld;
best_pd = cur_pd;
if (pck == req_pck)
goto found;
}
if (pck < req_pck)
break;
}
if (lck / pcd_min < req_pck)
break;
}
found:
cinfo->lck_div = best_ld;
cinfo->pck_div = best_pd;
cinfo->lck = fck / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
}
/* calculate clock rates using dividers in cinfo */
int dispc_calc_clock_rates(unsigned long dispc_fclk_rate,
struct dispc_clock_info *cinfo)
{
if (cinfo->lck_div > 255 || cinfo->lck_div == 0)
return -EINVAL;
if (cinfo->pck_div < 1 || cinfo->pck_div > 255)
return -EINVAL;
cinfo->lck = dispc_fclk_rate / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
return 0;
}
void dispc_mgr_set_clock_div(enum omap_channel channel,
struct dispc_clock_info *cinfo)
{
DSSDBG("lck = %lu (%u)\n", cinfo->lck, cinfo->lck_div);
DSSDBG("pck = %lu (%u)\n", cinfo->pck, cinfo->pck_div);
dispc_mgr_set_lcd_divisor(channel, cinfo->lck_div, cinfo->pck_div);
}
int dispc_mgr_get_clock_div(enum omap_channel channel,
struct dispc_clock_info *cinfo)
{
unsigned long fck;
fck = dispc_fclk_rate();
cinfo->lck_div = REG_GET(DISPC_DIVISORo(channel), 23, 16);
cinfo->pck_div = REG_GET(DISPC_DIVISORo(channel), 7, 0);
cinfo->lck = fck / cinfo->lck_div;
cinfo->pck = cinfo->lck / cinfo->pck_div;
return 0;
}
/* dispc.irq_lock has to be locked by the caller */
static void _omap_dispc_set_irqs(void)
{
u32 mask;
u32 old_mask;
int i;
struct omap_dispc_isr_data *isr_data;
mask = dispc.irq_error_mask;
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr == NULL)
continue;
mask |= isr_data->mask;
}
old_mask = dispc_read_reg(DISPC_IRQENABLE);
/* clear the irqstatus for newly enabled irqs */
dispc_write_reg(DISPC_IRQSTATUS, (mask ^ old_mask) & mask);
dispc_write_reg(DISPC_IRQENABLE, mask);
}
int omap_dispc_register_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
{
int i;
int ret;
unsigned long flags;
struct omap_dispc_isr_data *isr_data;
if (isr == NULL)
return -EINVAL;
spin_lock_irqsave(&dispc.irq_lock, flags);
/* check for duplicate entry */
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr == isr && isr_data->arg == arg &&
isr_data->mask == mask) {
ret = -EINVAL;
goto err;
}
}
isr_data = NULL;
ret = -EBUSY;
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr != NULL)
continue;
isr_data->isr = isr;
isr_data->arg = arg;
isr_data->mask = mask;
ret = 0;
break;
}
if (ret)
goto err;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return 0;
err:
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return ret;
}
EXPORT_SYMBOL(omap_dispc_register_isr);
int omap_dispc_unregister_isr(omap_dispc_isr_t isr, void *arg, u32 mask)
{
int i;
unsigned long flags;
int ret = -EINVAL;
struct omap_dispc_isr_data *isr_data;
spin_lock_irqsave(&dispc.irq_lock, flags);
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &dispc.registered_isr[i];
if (isr_data->isr != isr || isr_data->arg != arg ||
isr_data->mask != mask)
continue;
/* found the correct isr */
isr_data->isr = NULL;
isr_data->arg = NULL;
isr_data->mask = 0;
ret = 0;
break;
}
if (ret == 0)
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
return ret;
}
EXPORT_SYMBOL(omap_dispc_unregister_isr);
#ifdef DEBUG
static void print_irq_status(u32 status)
{
if ((status & dispc.irq_error_mask) == 0)
return;
printk(KERN_DEBUG "DISPC IRQ: 0x%x: ", status);
#define PIS(x) \
if (status & DISPC_IRQ_##x) \
printk(#x " ");
PIS(GFX_FIFO_UNDERFLOW);
PIS(OCP_ERR);
PIS(VID1_FIFO_UNDERFLOW);
PIS(VID2_FIFO_UNDERFLOW);
if (dss_feat_get_num_ovls() > 3)
PIS(VID3_FIFO_UNDERFLOW);
PIS(SYNC_LOST);
PIS(SYNC_LOST_DIGIT);
if (dss_has_feature(FEAT_MGR_LCD2))
PIS(SYNC_LOST2);
if (dss_has_feature(FEAT_MGR_LCD3))
PIS(SYNC_LOST3);
#undef PIS
printk("\n");
}
#endif
/* Called from dss.c. Note that we don't touch clocks here,
* but we presume they are on because we got an IRQ. However,
* an irq handler may turn the clocks off, so we may not have
* clock later in the function. */
static irqreturn_t omap_dispc_irq_handler(int irq, void *arg)
{
int i;
u32 irqstatus, irqenable;
u32 handledirqs = 0;
u32 unhandled_errors;
struct omap_dispc_isr_data *isr_data;
struct omap_dispc_isr_data registered_isr[DISPC_MAX_NR_ISRS];
spin_lock(&dispc.irq_lock);
irqstatus = dispc_read_reg(DISPC_IRQSTATUS);
irqenable = dispc_read_reg(DISPC_IRQENABLE);
/* IRQ is not for us */
if (!(irqstatus & irqenable)) {
spin_unlock(&dispc.irq_lock);
return IRQ_NONE;
}
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spin_lock(&dispc.irq_stats_lock);
dispc.irq_stats.irq_count++;
dss_collect_irq_stats(irqstatus, dispc.irq_stats.irqs);
spin_unlock(&dispc.irq_stats_lock);
#endif
#ifdef DEBUG
if (dss_debug)
print_irq_status(irqstatus);
#endif
/* Ack the interrupt. Do it here before clocks are possibly turned
* off */
dispc_write_reg(DISPC_IRQSTATUS, irqstatus);
/* flush posted write */
dispc_read_reg(DISPC_IRQSTATUS);
/* make a copy and unlock, so that isrs can unregister
* themselves */
memcpy(registered_isr, dispc.registered_isr,
sizeof(registered_isr));
spin_unlock(&dispc.irq_lock);
for (i = 0; i < DISPC_MAX_NR_ISRS; i++) {
isr_data = &registered_isr[i];
if (!isr_data->isr)
continue;
if (isr_data->mask & irqstatus) {
isr_data->isr(isr_data->arg, irqstatus);
handledirqs |= isr_data->mask;
}
}
spin_lock(&dispc.irq_lock);
unhandled_errors = irqstatus & ~handledirqs & dispc.irq_error_mask;
if (unhandled_errors) {
dispc.error_irqs |= unhandled_errors;
dispc.irq_error_mask &= ~unhandled_errors;
_omap_dispc_set_irqs();
schedule_work(&dispc.error_work);
}
spin_unlock(&dispc.irq_lock);
return IRQ_HANDLED;
}
static void dispc_error_worker(struct work_struct *work)
{
int i;
u32 errors;
unsigned long flags;
static const unsigned fifo_underflow_bits[] = {
DISPC_IRQ_GFX_FIFO_UNDERFLOW,
DISPC_IRQ_VID1_FIFO_UNDERFLOW,
DISPC_IRQ_VID2_FIFO_UNDERFLOW,
DISPC_IRQ_VID3_FIFO_UNDERFLOW,
};
spin_lock_irqsave(&dispc.irq_lock, flags);
errors = dispc.error_irqs;
dispc.error_irqs = 0;
spin_unlock_irqrestore(&dispc.irq_lock, flags);
dispc_runtime_get();
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
unsigned bit;
ovl = omap_dss_get_overlay(i);
bit = fifo_underflow_bits[i];
if (bit & errors) {
DSSERR("FIFO UNDERFLOW on %s, disabling the overlay\n",
ovl->name);
dispc_ovl_enable(ovl->id, false);
dispc_mgr_go(ovl->manager->id);
msleep(50);
}
}
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
unsigned bit;
mgr = omap_dss_get_overlay_manager(i);
bit = mgr_desc[i].sync_lost_irq;
if (bit & errors) {
struct omap_dss_device *dssdev = mgr->get_device(mgr);
bool enable;
DSSERR("SYNC_LOST on channel %s, restarting the output "
"with video overlays disabled\n",
mgr->name);
enable = dssdev->state == OMAP_DSS_DISPLAY_ACTIVE;
dssdev->driver->disable(dssdev);
for (i = 0; i < omap_dss_get_num_overlays(); ++i) {
struct omap_overlay *ovl;
ovl = omap_dss_get_overlay(i);
if (ovl->id != OMAP_DSS_GFX &&
ovl->manager == mgr)
dispc_ovl_enable(ovl->id, false);
}
dispc_mgr_go(mgr->id);
msleep(50);
if (enable)
dssdev->driver->enable(dssdev);
}
}
if (errors & DISPC_IRQ_OCP_ERR) {
DSSERR("OCP_ERR\n");
for (i = 0; i < omap_dss_get_num_overlay_managers(); ++i) {
struct omap_overlay_manager *mgr;
struct omap_dss_device *dssdev;
mgr = omap_dss_get_overlay_manager(i);
dssdev = mgr->get_device(mgr);
if (dssdev && dssdev->driver)
dssdev->driver->disable(dssdev);
}
}
spin_lock_irqsave(&dispc.irq_lock, flags);
dispc.irq_error_mask |= errors;
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
dispc_runtime_put();
}
int omap_dispc_wait_for_irq_timeout(u32 irqmask, unsigned long timeout)
{
void dispc_irq_wait_handler(void *data, u32 mask)
{
complete((struct completion *)data);
}
int r;
DECLARE_COMPLETION_ONSTACK(completion);
r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
irqmask);
if (r)
return r;
timeout = wait_for_completion_timeout(&completion, timeout);
omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
if (timeout == 0)
return -ETIMEDOUT;
if (timeout == -ERESTARTSYS)
return -ERESTARTSYS;
return 0;
}
int omap_dispc_wait_for_irq_interruptible_timeout(u32 irqmask,
unsigned long timeout)
{
void dispc_irq_wait_handler(void *data, u32 mask)
{
complete((struct completion *)data);
}
int r;
DECLARE_COMPLETION_ONSTACK(completion);
r = omap_dispc_register_isr(dispc_irq_wait_handler, &completion,
irqmask);
if (r)
return r;
timeout = wait_for_completion_interruptible_timeout(&completion,
timeout);
omap_dispc_unregister_isr(dispc_irq_wait_handler, &completion, irqmask);
if (timeout == 0)
return -ETIMEDOUT;
if (timeout == -ERESTARTSYS)
return -ERESTARTSYS;
return 0;
}
static void _omap_dispc_initialize_irq(void)
{
unsigned long flags;
spin_lock_irqsave(&dispc.irq_lock, flags);
memset(dispc.registered_isr, 0, sizeof(dispc.registered_isr));
dispc.irq_error_mask = DISPC_IRQ_MASK_ERROR;
if (dss_has_feature(FEAT_MGR_LCD2))
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST2;
if (dss_has_feature(FEAT_MGR_LCD3))
dispc.irq_error_mask |= DISPC_IRQ_SYNC_LOST3;
if (dss_feat_get_num_ovls() > 3)
dispc.irq_error_mask |= DISPC_IRQ_VID3_FIFO_UNDERFLOW;
/* there's SYNC_LOST_DIGIT waiting after enabling the DSS,
* so clear it */
dispc_write_reg(DISPC_IRQSTATUS, dispc_read_reg(DISPC_IRQSTATUS));
_omap_dispc_set_irqs();
spin_unlock_irqrestore(&dispc.irq_lock, flags);
}
void dispc_enable_sidle(void)
{
REG_FLD_MOD(DISPC_SYSCONFIG, 2, 4, 3); /* SIDLEMODE: smart idle */
}
void dispc_disable_sidle(void)
{
REG_FLD_MOD(DISPC_SYSCONFIG, 1, 4, 3); /* SIDLEMODE: no idle */
}
static void _omap_dispc_initial_config(void)
{
u32 l;
/* Exclusively enable DISPC_CORE_CLK and set divider to 1 */
if (dss_has_feature(FEAT_CORE_CLK_DIV)) {
l = dispc_read_reg(DISPC_DIVISOR);
/* Use DISPC_DIVISOR.LCD, instead of DISPC_DIVISOR1.LCD */
l = FLD_MOD(l, 1, 0, 0);
l = FLD_MOD(l, 1, 23, 16);
dispc_write_reg(DISPC_DIVISOR, l);
}
/* FUNCGATED */
if (dss_has_feature(FEAT_FUNCGATED))
REG_FLD_MOD(DISPC_CONFIG, 1, 9, 9);
dispc_setup_color_conv_coef();
dispc_set_loadmode(OMAP_DSS_LOAD_FRAME_ONLY);
dispc_init_fifos();
dispc_configure_burst_sizes();
dispc_ovl_enable_zorder_planes();
}
static const struct dispc_features omap24xx_dispc_feats __initconst = {
.sw_start = 5,
.fp_start = 15,
.bp_start = 27,
.sw_max = 64,
.vp_max = 255,
.hp_max = 256,
.calc_scaling = dispc_ovl_calc_scaling_24xx,
.calc_core_clk = calc_core_clk_24xx,
.num_fifos = 3,
};
static const struct dispc_features omap34xx_rev1_0_dispc_feats __initconst = {
.sw_start = 5,
.fp_start = 15,
.bp_start = 27,
.sw_max = 64,
.vp_max = 255,
.hp_max = 256,
.calc_scaling = dispc_ovl_calc_scaling_34xx,
.calc_core_clk = calc_core_clk_34xx,
.num_fifos = 3,
};
static const struct dispc_features omap34xx_rev3_0_dispc_feats __initconst = {
.sw_start = 7,
.fp_start = 19,
.bp_start = 31,
.sw_max = 256,
.vp_max = 4095,
.hp_max = 4096,
.calc_scaling = dispc_ovl_calc_scaling_34xx,
.calc_core_clk = calc_core_clk_34xx,
.num_fifos = 3,
};
static const struct dispc_features omap44xx_dispc_feats __initconst = {
.sw_start = 7,
.fp_start = 19,
.bp_start = 31,
.sw_max = 256,
.vp_max = 4095,
.hp_max = 4096,
.calc_scaling = dispc_ovl_calc_scaling_44xx,
.calc_core_clk = calc_core_clk_44xx,
.num_fifos = 5,
.gfx_fifo_workaround = true,
};
static int __init dispc_init_features(struct device *dev)
{
const struct dispc_features *src;
struct dispc_features *dst;
dst = devm_kzalloc(dev, sizeof(*dst), GFP_KERNEL);
if (!dst) {
dev_err(dev, "Failed to allocate DISPC Features\n");
return -ENOMEM;
}
if (cpu_is_omap24xx()) {
src = &omap24xx_dispc_feats;
} else if (cpu_is_omap34xx()) {
if (omap_rev() < OMAP3430_REV_ES3_0)
src = &omap34xx_rev1_0_dispc_feats;
else
src = &omap34xx_rev3_0_dispc_feats;
} else if (cpu_is_omap44xx()) {
src = &omap44xx_dispc_feats;
} else if (soc_is_omap54xx()) {
src = &omap44xx_dispc_feats;
} else {
return -ENODEV;
}
memcpy(dst, src, sizeof(*dst));
dispc.feat = dst;
return 0;
}
/* DISPC HW IP initialisation */
static int __init omap_dispchw_probe(struct platform_device *pdev)
{
u32 rev;
int r = 0;
struct resource *dispc_mem;
struct clk *clk;
dispc.pdev = pdev;
r = dispc_init_features(&dispc.pdev->dev);
if (r)
return r;
spin_lock_init(&dispc.irq_lock);
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
spin_lock_init(&dispc.irq_stats_lock);
dispc.irq_stats.last_reset = jiffies;
#endif
INIT_WORK(&dispc.error_work, dispc_error_worker);
dispc_mem = platform_get_resource(dispc.pdev, IORESOURCE_MEM, 0);
if (!dispc_mem) {
DSSERR("can't get IORESOURCE_MEM DISPC\n");
return -EINVAL;
}
dispc.base = devm_ioremap(&pdev->dev, dispc_mem->start,
resource_size(dispc_mem));
if (!dispc.base) {
DSSERR("can't ioremap DISPC\n");
return -ENOMEM;
}
dispc.irq = platform_get_irq(dispc.pdev, 0);
if (dispc.irq < 0) {
DSSERR("platform_get_irq failed\n");
return -ENODEV;
}
r = devm_request_irq(&pdev->dev, dispc.irq, omap_dispc_irq_handler,
IRQF_SHARED, "OMAP DISPC", dispc.pdev);
if (r < 0) {
DSSERR("request_irq failed\n");
return r;
}
clk = clk_get(&pdev->dev, "fck");
if (IS_ERR(clk)) {
DSSERR("can't get fck\n");
r = PTR_ERR(clk);
return r;
}
dispc.dss_clk = clk;
pm_runtime_enable(&pdev->dev);
r = dispc_runtime_get();
if (r)
goto err_runtime_get;
_omap_dispc_initial_config();
_omap_dispc_initialize_irq();
rev = dispc_read_reg(DISPC_REVISION);
dev_dbg(&pdev->dev, "OMAP DISPC rev %d.%d\n",
FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
dispc_runtime_put();
dss_debugfs_create_file("dispc", dispc_dump_regs);
#ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
dss_debugfs_create_file("dispc_irq", dispc_dump_irqs);
#endif
return 0;
err_runtime_get:
pm_runtime_disable(&pdev->dev);
clk_put(dispc.dss_clk);
return r;
}
static int __exit omap_dispchw_remove(struct platform_device *pdev)
{
pm_runtime_disable(&pdev->dev);
clk_put(dispc.dss_clk);
return 0;
}
static int dispc_runtime_suspend(struct device *dev)
{
dispc_save_context();
return 0;
}
static int dispc_runtime_resume(struct device *dev)
{
dispc_restore_context();
return 0;
}
static const struct dev_pm_ops dispc_pm_ops = {
.runtime_suspend = dispc_runtime_suspend,
.runtime_resume = dispc_runtime_resume,
};
static struct platform_driver omap_dispchw_driver = {
.remove = __exit_p(omap_dispchw_remove),
.driver = {
.name = "omapdss_dispc",
.owner = THIS_MODULE,
.pm = &dispc_pm_ops,
},
};
int __init dispc_init_platform_driver(void)
{
return platform_driver_probe(&omap_dispchw_driver, omap_dispchw_probe);
}
void __exit dispc_uninit_platform_driver(void)
{
platform_driver_unregister(&omap_dispchw_driver);
}