blob: 7947634ee6b06c6f63707c87ef754d22342e975c [file] [log] [blame]
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001/*
2 * Copyright (C) 2008
3 * Guennadi Liakhovetski, DENX Software Engineering, <lg@denx.de>
4 *
5 * Copyright 2004-2007 Freescale Semiconductor, Inc. All Rights Reserved.
6 *
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License version 2 as
9 * published by the Free Software Foundation.
10 */
11
12#include <linux/module.h>
13#include <linux/kernel.h>
14#include <linux/platform_device.h>
15#include <linux/sched.h>
16#include <linux/errno.h>
17#include <linux/string.h>
18#include <linux/interrupt.h>
19#include <linux/slab.h>
20#include <linux/fb.h>
21#include <linux/delay.h>
22#include <linux/init.h>
23#include <linux/ioport.h>
24#include <linux/dma-mapping.h>
25#include <linux/dmaengine.h>
26#include <linux/console.h>
27#include <linux/clk.h>
28#include <linux/mutex.h>
Shawn Guob8a6d992012-09-14 10:35:54 +080029#include <linux/dma/ipu-dma.h>
Alexander Stein7edaa762014-05-12 08:34:14 +020030#include <linux/backlight.h>
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070031
Arnd Bergmann82906b12012-08-24 15:14:29 +020032#include <linux/platform_data/dma-imx.h>
Arnd Bergmann82906b12012-08-24 15:14:29 +020033#include <linux/platform_data/video-mx3fb.h>
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070034
35#include <asm/io.h>
36#include <asm/uaccess.h>
37
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010038#define MX3FB_NAME "mx3_sdc_fb"
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070039
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010040#define MX3FB_REG_OFFSET 0xB4
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070041
42/* SDC Registers */
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010043#define SDC_COM_CONF (0xB4 - MX3FB_REG_OFFSET)
44#define SDC_GW_CTRL (0xB8 - MX3FB_REG_OFFSET)
45#define SDC_FG_POS (0xBC - MX3FB_REG_OFFSET)
46#define SDC_BG_POS (0xC0 - MX3FB_REG_OFFSET)
47#define SDC_CUR_POS (0xC4 - MX3FB_REG_OFFSET)
48#define SDC_PWM_CTRL (0xC8 - MX3FB_REG_OFFSET)
49#define SDC_CUR_MAP (0xCC - MX3FB_REG_OFFSET)
50#define SDC_HOR_CONF (0xD0 - MX3FB_REG_OFFSET)
51#define SDC_VER_CONF (0xD4 - MX3FB_REG_OFFSET)
52#define SDC_SHARP_CONF_1 (0xD8 - MX3FB_REG_OFFSET)
53#define SDC_SHARP_CONF_2 (0xDC - MX3FB_REG_OFFSET)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070054
55/* Register bits */
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010056#define SDC_COM_TFT_COLOR 0x00000001UL
57#define SDC_COM_FG_EN 0x00000010UL
58#define SDC_COM_GWSEL 0x00000020UL
59#define SDC_COM_GLB_A 0x00000040UL
60#define SDC_COM_KEY_COLOR_G 0x00000080UL
61#define SDC_COM_BG_EN 0x00000200UL
62#define SDC_COM_SHARP 0x00001000UL
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070063
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010064#define SDC_V_SYNC_WIDTH_L 0x00000001UL
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -070065
66/* Display Interface registers */
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +010067#define DI_DISP_IF_CONF (0x0124 - MX3FB_REG_OFFSET)
68#define DI_DISP_SIG_POL (0x0128 - MX3FB_REG_OFFSET)
69#define DI_SER_DISP1_CONF (0x012C - MX3FB_REG_OFFSET)
70#define DI_SER_DISP2_CONF (0x0130 - MX3FB_REG_OFFSET)
71#define DI_HSP_CLK_PER (0x0134 - MX3FB_REG_OFFSET)
72#define DI_DISP0_TIME_CONF_1 (0x0138 - MX3FB_REG_OFFSET)
73#define DI_DISP0_TIME_CONF_2 (0x013C - MX3FB_REG_OFFSET)
74#define DI_DISP0_TIME_CONF_3 (0x0140 - MX3FB_REG_OFFSET)
75#define DI_DISP1_TIME_CONF_1 (0x0144 - MX3FB_REG_OFFSET)
76#define DI_DISP1_TIME_CONF_2 (0x0148 - MX3FB_REG_OFFSET)
77#define DI_DISP1_TIME_CONF_3 (0x014C - MX3FB_REG_OFFSET)
78#define DI_DISP2_TIME_CONF_1 (0x0150 - MX3FB_REG_OFFSET)
79#define DI_DISP2_TIME_CONF_2 (0x0154 - MX3FB_REG_OFFSET)
80#define DI_DISP2_TIME_CONF_3 (0x0158 - MX3FB_REG_OFFSET)
81#define DI_DISP3_TIME_CONF (0x015C - MX3FB_REG_OFFSET)
82#define DI_DISP0_DB0_MAP (0x0160 - MX3FB_REG_OFFSET)
83#define DI_DISP0_DB1_MAP (0x0164 - MX3FB_REG_OFFSET)
84#define DI_DISP0_DB2_MAP (0x0168 - MX3FB_REG_OFFSET)
85#define DI_DISP0_CB0_MAP (0x016C - MX3FB_REG_OFFSET)
86#define DI_DISP0_CB1_MAP (0x0170 - MX3FB_REG_OFFSET)
87#define DI_DISP0_CB2_MAP (0x0174 - MX3FB_REG_OFFSET)
88#define DI_DISP1_DB0_MAP (0x0178 - MX3FB_REG_OFFSET)
89#define DI_DISP1_DB1_MAP (0x017C - MX3FB_REG_OFFSET)
90#define DI_DISP1_DB2_MAP (0x0180 - MX3FB_REG_OFFSET)
91#define DI_DISP1_CB0_MAP (0x0184 - MX3FB_REG_OFFSET)
92#define DI_DISP1_CB1_MAP (0x0188 - MX3FB_REG_OFFSET)
93#define DI_DISP1_CB2_MAP (0x018C - MX3FB_REG_OFFSET)
94#define DI_DISP2_DB0_MAP (0x0190 - MX3FB_REG_OFFSET)
95#define DI_DISP2_DB1_MAP (0x0194 - MX3FB_REG_OFFSET)
96#define DI_DISP2_DB2_MAP (0x0198 - MX3FB_REG_OFFSET)
97#define DI_DISP2_CB0_MAP (0x019C - MX3FB_REG_OFFSET)
98#define DI_DISP2_CB1_MAP (0x01A0 - MX3FB_REG_OFFSET)
99#define DI_DISP2_CB2_MAP (0x01A4 - MX3FB_REG_OFFSET)
100#define DI_DISP3_B0_MAP (0x01A8 - MX3FB_REG_OFFSET)
101#define DI_DISP3_B1_MAP (0x01AC - MX3FB_REG_OFFSET)
102#define DI_DISP3_B2_MAP (0x01B0 - MX3FB_REG_OFFSET)
103#define DI_DISP_ACC_CC (0x01B4 - MX3FB_REG_OFFSET)
104#define DI_DISP_LLA_CONF (0x01B8 - MX3FB_REG_OFFSET)
105#define DI_DISP_LLA_DATA (0x01BC - MX3FB_REG_OFFSET)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700106
107/* DI_DISP_SIG_POL bits */
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100108#define DI_D3_VSYNC_POL_SHIFT 28
109#define DI_D3_HSYNC_POL_SHIFT 27
110#define DI_D3_DRDY_SHARP_POL_SHIFT 26
111#define DI_D3_CLK_POL_SHIFT 25
112#define DI_D3_DATA_POL_SHIFT 24
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700113
114/* DI_DISP_IF_CONF bits */
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100115#define DI_D3_CLK_IDLE_SHIFT 26
116#define DI_D3_CLK_SEL_SHIFT 25
117#define DI_D3_DATAMSK_SHIFT 24
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700118
119enum ipu_panel {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100120 IPU_PANEL_SHARP_TFT,
121 IPU_PANEL_TFT,
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700122};
123
124struct ipu_di_signal_cfg {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100125 unsigned datamask_en:1;
126 unsigned clksel_en:1;
127 unsigned clkidle_en:1;
128 unsigned data_pol:1; /* true = inverted */
129 unsigned clk_pol:1; /* true = rising edge */
130 unsigned enable_pol:1;
131 unsigned Hsync_pol:1; /* true = active high */
132 unsigned Vsync_pol:1;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700133};
134
135static const struct fb_videomode mx3fb_modedb[] = {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100136 {
137 /* 240x320 @ 60 Hz */
138 .name = "Sharp-QVGA",
139 .refresh = 60,
140 .xres = 240,
141 .yres = 320,
142 .pixclock = 185925,
143 .left_margin = 9,
144 .right_margin = 16,
145 .upper_margin = 7,
146 .lower_margin = 9,
147 .hsync_len = 1,
148 .vsync_len = 1,
149 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
150 FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT |
151 FB_SYNC_CLK_IDLE_EN,
152 .vmode = FB_VMODE_NONINTERLACED,
153 .flag = 0,
154 }, {
155 /* 240x33 @ 60 Hz */
156 .name = "Sharp-CLI",
157 .refresh = 60,
158 .xres = 240,
159 .yres = 33,
160 .pixclock = 185925,
161 .left_margin = 9,
162 .right_margin = 16,
163 .upper_margin = 7,
164 .lower_margin = 9 + 287,
165 .hsync_len = 1,
166 .vsync_len = 1,
167 .sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_SHARP_MODE |
168 FB_SYNC_CLK_INVERT | FB_SYNC_DATA_INVERT |
169 FB_SYNC_CLK_IDLE_EN,
170 .vmode = FB_VMODE_NONINTERLACED,
171 .flag = 0,
172 }, {
173 /* 640x480 @ 60 Hz */
174 .name = "NEC-VGA",
175 .refresh = 60,
176 .xres = 640,
177 .yres = 480,
178 .pixclock = 38255,
179 .left_margin = 144,
180 .right_margin = 0,
181 .upper_margin = 34,
182 .lower_margin = 40,
183 .hsync_len = 1,
184 .vsync_len = 1,
185 .sync = FB_SYNC_VERT_HIGH_ACT | FB_SYNC_OE_ACT_HIGH,
186 .vmode = FB_VMODE_NONINTERLACED,
187 .flag = 0,
188 }, {
189 /* NTSC TV output */
190 .name = "TV-NTSC",
191 .refresh = 60,
192 .xres = 640,
193 .yres = 480,
194 .pixclock = 37538,
195 .left_margin = 38,
196 .right_margin = 858 - 640 - 38 - 3,
197 .upper_margin = 36,
198 .lower_margin = 518 - 480 - 36 - 1,
199 .hsync_len = 3,
200 .vsync_len = 1,
201 .sync = 0,
202 .vmode = FB_VMODE_NONINTERLACED,
203 .flag = 0,
204 }, {
205 /* PAL TV output */
206 .name = "TV-PAL",
207 .refresh = 50,
208 .xres = 640,
209 .yres = 480,
210 .pixclock = 37538,
211 .left_margin = 38,
212 .right_margin = 960 - 640 - 38 - 32,
213 .upper_margin = 32,
214 .lower_margin = 555 - 480 - 32 - 3,
215 .hsync_len = 32,
216 .vsync_len = 3,
217 .sync = 0,
218 .vmode = FB_VMODE_NONINTERLACED,
219 .flag = 0,
220 }, {
221 /* TV output VGA mode, 640x480 @ 65 Hz */
222 .name = "TV-VGA",
223 .refresh = 60,
224 .xres = 640,
225 .yres = 480,
226 .pixclock = 40574,
227 .left_margin = 35,
228 .right_margin = 45,
229 .upper_margin = 9,
230 .lower_margin = 1,
231 .hsync_len = 46,
232 .vsync_len = 5,
233 .sync = 0,
234 .vmode = FB_VMODE_NONINTERLACED,
235 .flag = 0,
236 },
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700237};
238
239struct mx3fb_data {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100240 struct fb_info *fbi;
241 int backlight_level;
242 void __iomem *reg_base;
243 spinlock_t lock;
244 struct device *dev;
Alexander Stein7edaa762014-05-12 08:34:14 +0200245 struct backlight_device *bl;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700246
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100247 uint32_t h_start_width;
248 uint32_t v_start_width;
Sascha Hauerf910fb82011-12-01 14:58:52 +0100249 enum disp_data_mapping disp_data_fmt;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700250};
251
252struct dma_chan_request {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100253 struct mx3fb_data *mx3fb;
254 enum ipu_channel id;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700255};
256
257/* MX3 specific framebuffer information. */
258struct mx3fb_info {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100259 int blank;
260 enum ipu_channel ipu_ch;
261 uint32_t cur_ipu_buf;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700262
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100263 u32 pseudo_palette[16];
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700264
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100265 struct completion flip_cmpl;
266 struct mutex mutex; /* Protects fb-ops */
267 struct mx3fb_data *mx3fb;
268 struct idmac_channel *idmac_channel;
269 struct dma_async_tx_descriptor *txd;
270 dma_cookie_t cookie;
271 struct scatterlist sg[2];
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700272
Liu Ying6cd77e02012-06-11 09:06:49 +0800273 struct fb_var_screeninfo cur_var; /* current var info */
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700274};
275
Alexander Stein7edaa762014-05-12 08:34:14 +0200276static void sdc_set_brightness(struct mx3fb_data *mx3fb, uint8_t value);
277static u32 sdc_get_brightness(struct mx3fb_data *mx3fb);
278
279static int mx3fb_bl_get_brightness(struct backlight_device *bl)
280{
281 struct mx3fb_data *fbd = bl_get_data(bl);
282
283 return sdc_get_brightness(fbd);
284}
285
286static int mx3fb_bl_update_status(struct backlight_device *bl)
287{
288 struct mx3fb_data *fbd = bl_get_data(bl);
289 int brightness = bl->props.brightness;
290
291 if (bl->props.power != FB_BLANK_UNBLANK)
292 brightness = 0;
293 if (bl->props.fb_blank != FB_BLANK_UNBLANK)
294 brightness = 0;
295
296 fbd->backlight_level = (fbd->backlight_level & ~0xFF) | brightness;
297
298 sdc_set_brightness(fbd, fbd->backlight_level);
299
300 return 0;
301}
302
303static const struct backlight_ops mx3fb_lcdc_bl_ops = {
304 .update_status = mx3fb_bl_update_status,
305 .get_brightness = mx3fb_bl_get_brightness,
306};
307
308static void mx3fb_init_backlight(struct mx3fb_data *fbd)
309{
310 struct backlight_properties props;
311 struct backlight_device *bl;
312
313 if (fbd->bl)
314 return;
315
316 memset(&props, 0, sizeof(struct backlight_properties));
317 props.max_brightness = 0xff;
318 props.type = BACKLIGHT_RAW;
319 sdc_set_brightness(fbd, fbd->backlight_level);
320
321 bl = backlight_device_register("mx3fb-bl", fbd->dev, fbd,
322 &mx3fb_lcdc_bl_ops, &props);
323 if (IS_ERR(bl)) {
324 dev_err(fbd->dev, "error %ld on backlight register\n",
325 PTR_ERR(bl));
326 return;
327 }
328
329 fbd->bl = bl;
330 bl->props.power = FB_BLANK_UNBLANK;
331 bl->props.fb_blank = FB_BLANK_UNBLANK;
332 bl->props.brightness = mx3fb_bl_get_brightness(bl);
333}
334
335static void mx3fb_exit_backlight(struct mx3fb_data *fbd)
336{
Markus Elfring8a8e4112014-11-23 15:15:29 +0100337 backlight_device_unregister(fbd->bl);
Alexander Stein7edaa762014-05-12 08:34:14 +0200338}
339
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700340static void mx3fb_dma_done(void *);
341
342/* Used fb-mode and bpp. Can be set on kernel command line, therefore file-static. */
343static const char *fb_mode;
344static unsigned long default_bpp = 16;
345
346static u32 mx3fb_read_reg(struct mx3fb_data *mx3fb, unsigned long reg)
347{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100348 return __raw_readl(mx3fb->reg_base + reg);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700349}
350
351static void mx3fb_write_reg(struct mx3fb_data *mx3fb, u32 value, unsigned long reg)
352{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100353 __raw_writel(value, mx3fb->reg_base + reg);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700354}
355
Sascha Hauerf910fb82011-12-01 14:58:52 +0100356struct di_mapping {
357 uint32_t b0, b1, b2;
358};
359
360static const struct di_mapping di_mappings[] = {
361 [IPU_DISP_DATA_MAPPING_RGB666] = { 0x0005000f, 0x000b000f, 0x0011000f },
362 [IPU_DISP_DATA_MAPPING_RGB565] = { 0x0004003f, 0x000a000f, 0x000f003f },
363 [IPU_DISP_DATA_MAPPING_RGB888] = { 0x00070000, 0x000f0000, 0x00170000 },
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700364};
365
366static void sdc_fb_init(struct mx3fb_info *fbi)
367{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100368 struct mx3fb_data *mx3fb = fbi->mx3fb;
369 uint32_t reg;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700370
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100371 reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700372
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100373 mx3fb_write_reg(mx3fb, reg | SDC_COM_BG_EN, SDC_COM_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700374}
375
376/* Returns enabled flag before uninit */
377static uint32_t sdc_fb_uninit(struct mx3fb_info *fbi)
378{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100379 struct mx3fb_data *mx3fb = fbi->mx3fb;
380 uint32_t reg;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700381
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100382 reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700383
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100384 mx3fb_write_reg(mx3fb, reg & ~SDC_COM_BG_EN, SDC_COM_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700385
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100386 return reg & SDC_COM_BG_EN;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700387}
388
389static void sdc_enable_channel(struct mx3fb_info *mx3_fbi)
390{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100391 struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
392 struct idmac_channel *ichan = mx3_fbi->idmac_channel;
393 struct dma_chan *dma_chan = &ichan->dma_chan;
394 unsigned long flags;
395 dma_cookie_t cookie;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700396
Alberto Panizzob3cb5372010-02-02 13:43:59 -0800397 if (mx3_fbi->txd)
398 dev_dbg(mx3fb->dev, "mx3fbi %p, desc %p, sg %p\n", mx3_fbi,
399 to_tx_desc(mx3_fbi->txd), to_tx_desc(mx3_fbi->txd)->sg);
400 else
401 dev_dbg(mx3fb->dev, "mx3fbi %p, txd = NULL\n", mx3_fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700402
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100403 /* This enables the channel */
404 if (mx3_fbi->cookie < 0) {
Alexandre Bounine16052822012-03-08 16:11:18 -0500405 mx3_fbi->txd = dmaengine_prep_slave_sg(dma_chan,
Vinod Koul1003cab2011-10-14 10:39:23 +0530406 &mx3_fbi->sg[0], 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100407 if (!mx3_fbi->txd) {
408 dev_err(mx3fb->dev, "Cannot allocate descriptor on %d\n",
409 dma_chan->chan_id);
410 return;
411 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700412
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100413 mx3_fbi->txd->callback_param = mx3_fbi->txd;
414 mx3_fbi->txd->callback = mx3fb_dma_done;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700415
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100416 cookie = mx3_fbi->txd->tx_submit(mx3_fbi->txd);
417 dev_dbg(mx3fb->dev, "%d: Submit %p #%d [%c]\n", __LINE__,
418 mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+');
419 } else {
420 if (!mx3_fbi->txd || !mx3_fbi->txd->tx_submit) {
421 dev_err(mx3fb->dev, "Cannot enable channel %d\n",
422 dma_chan->chan_id);
423 return;
424 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700425
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100426 /* Just re-activate the same buffer */
427 dma_async_issue_pending(dma_chan);
428 cookie = mx3_fbi->cookie;
429 dev_dbg(mx3fb->dev, "%d: Re-submit %p #%d [%c]\n", __LINE__,
430 mx3_fbi->txd, cookie, list_empty(&ichan->queue) ? '-' : '+');
431 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700432
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100433 if (cookie >= 0) {
434 spin_lock_irqsave(&mx3fb->lock, flags);
435 sdc_fb_init(mx3_fbi);
436 mx3_fbi->cookie = cookie;
437 spin_unlock_irqrestore(&mx3fb->lock, flags);
438 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700439
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100440 /*
441 * Attention! Without this msleep the channel keeps generating
442 * interrupts. Next sdc_set_brightness() is going to be called
443 * from mx3fb_blank().
444 */
445 msleep(2);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700446}
447
448static void sdc_disable_channel(struct mx3fb_info *mx3_fbi)
449{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100450 struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
451 uint32_t enabled;
452 unsigned long flags;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700453
Wolfram Stering8b53b7f2011-09-23 14:09:35 +0200454 if (mx3_fbi->txd == NULL)
455 return;
456
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100457 spin_lock_irqsave(&mx3fb->lock, flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700458
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100459 enabled = sdc_fb_uninit(mx3_fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700460
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100461 spin_unlock_irqrestore(&mx3fb->lock, flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700462
Vinod Koula5007892014-10-11 21:10:40 +0530463 dmaengine_terminate_all(mx3_fbi->txd->chan);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100464 mx3_fbi->txd = NULL;
465 mx3_fbi->cookie = -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700466}
467
468/**
469 * sdc_set_window_pos() - set window position of the respective plane.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100470 * @mx3fb: mx3fb context.
471 * @channel: IPU DMAC channel ID.
472 * @x_pos: X coordinate relative to the top left corner to place window at.
473 * @y_pos: Y coordinate relative to the top left corner to place window at.
474 * @return: 0 on success or negative error code on failure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700475 */
476static int sdc_set_window_pos(struct mx3fb_data *mx3fb, enum ipu_channel channel,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100477 int16_t x_pos, int16_t y_pos)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700478{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100479 if (channel != IDMAC_SDC_0)
480 return -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700481
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700482 x_pos += mx3fb->h_start_width;
483 y_pos += mx3fb->v_start_width;
484
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100485 mx3fb_write_reg(mx3fb, (x_pos << 16) | y_pos, SDC_BG_POS);
486 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700487}
488
489/**
490 * sdc_init_panel() - initialize a synchronous LCD panel.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100491 * @mx3fb: mx3fb context.
492 * @panel: panel type.
493 * @pixel_clk: desired pixel clock frequency in Hz.
494 * @width: width of panel in pixels.
495 * @height: height of panel in pixels.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100496 * @h_start_width: number of pixel clocks between the HSYNC signal pulse
497 * and the start of valid data.
498 * @h_sync_width: width of the HSYNC signal in units of pixel clocks.
499 * @h_end_width: number of pixel clocks between the end of valid data
500 * and the HSYNC signal for next line.
501 * @v_start_width: number of lines between the VSYNC signal pulse and the
502 * start of valid data.
503 * @v_sync_width: width of the VSYNC signal in units of lines
504 * @v_end_width: number of lines between the end of valid data and the
505 * VSYNC signal for next frame.
506 * @sig: bitfield of signal polarities for LCD interface.
507 * @return: 0 on success or negative error code on failure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700508 */
509static int sdc_init_panel(struct mx3fb_data *mx3fb, enum ipu_panel panel,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100510 uint32_t pixel_clk,
511 uint16_t width, uint16_t height,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100512 uint16_t h_start_width, uint16_t h_sync_width,
513 uint16_t h_end_width, uint16_t v_start_width,
514 uint16_t v_sync_width, uint16_t v_end_width,
515 struct ipu_di_signal_cfg sig)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700516{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100517 unsigned long lock_flags;
518 uint32_t reg;
519 uint32_t old_conf;
520 uint32_t div;
521 struct clk *ipu_clk;
Sascha Hauerf910fb82011-12-01 14:58:52 +0100522 const struct di_mapping *map;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700523
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100524 dev_dbg(mx3fb->dev, "panel size = %d x %d", width, height);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700525
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100526 if (v_sync_width == 0 || h_sync_width == 0)
527 return -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700528
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100529 /* Init panel size and blanking periods */
530 reg = ((uint32_t) (h_sync_width - 1) << 26) |
531 ((uint32_t) (width + h_start_width + h_end_width - 1) << 16);
532 mx3fb_write_reg(mx3fb, reg, SDC_HOR_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700533
534#ifdef DEBUG
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100535 printk(KERN_CONT " hor_conf %x,", reg);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700536#endif
537
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100538 reg = ((uint32_t) (v_sync_width - 1) << 26) | SDC_V_SYNC_WIDTH_L |
539 ((uint32_t) (height + v_start_width + v_end_width - 1) << 16);
540 mx3fb_write_reg(mx3fb, reg, SDC_VER_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700541
542#ifdef DEBUG
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100543 printk(KERN_CONT " ver_conf %x\n", reg);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700544#endif
545
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100546 mx3fb->h_start_width = h_start_width;
547 mx3fb->v_start_width = v_start_width;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700548
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100549 switch (panel) {
550 case IPU_PANEL_SHARP_TFT:
551 mx3fb_write_reg(mx3fb, 0x00FD0102L, SDC_SHARP_CONF_1);
552 mx3fb_write_reg(mx3fb, 0x00F500F4L, SDC_SHARP_CONF_2);
553 mx3fb_write_reg(mx3fb, SDC_COM_SHARP | SDC_COM_TFT_COLOR, SDC_COM_CONF);
554 break;
555 case IPU_PANEL_TFT:
556 mx3fb_write_reg(mx3fb, SDC_COM_TFT_COLOR, SDC_COM_CONF);
557 break;
558 default:
559 return -EINVAL;
560 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700561
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100562 /* Init clocking */
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700563
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100564 /*
565 * Calculate divider: fractional part is 4 bits so simply multiple by
566 * 2^4 to get fractional part, as long as we stay under ~250MHz and on
567 * i.MX31 it (HSP_CLK) is <= 178MHz. Currently 128.267MHz
568 */
Russell King3879f5d2009-03-16 22:28:04 +0000569 ipu_clk = clk_get(mx3fb->dev, NULL);
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700570 if (!IS_ERR(ipu_clk)) {
571 div = clk_get_rate(ipu_clk) * 16 / pixel_clk;
572 clk_put(ipu_clk);
573 } else {
574 div = 0;
575 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700576
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100577 if (div < 0x40) { /* Divider less than 4 */
578 dev_dbg(mx3fb->dev,
579 "InitPanel() - Pixel clock divider less than 4\n");
580 div = 0x40;
581 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700582
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700583 dev_dbg(mx3fb->dev, "pixel clk = %u, divider %u.%u\n",
584 pixel_clk, div >> 4, (div & 7) * 125);
585
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100586 spin_lock_irqsave(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700587
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100588 /*
589 * DISP3_IF_CLK_DOWN_WR is half the divider value and 2 fraction bits
590 * fewer. Subtract 1 extra from DISP3_IF_CLK_DOWN_WR based on timing
591 * debug. DISP3_IF_CLK_UP_WR is 0
592 */
593 mx3fb_write_reg(mx3fb, (((div / 8) - 1) << 22) | div, DI_DISP3_TIME_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700594
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100595 /* DI settings */
596 old_conf = mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF) & 0x78FFFFFF;
597 old_conf |= sig.datamask_en << DI_D3_DATAMSK_SHIFT |
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700598 sig.clksel_en << DI_D3_CLK_SEL_SHIFT |
599 sig.clkidle_en << DI_D3_CLK_IDLE_SHIFT;
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100600 mx3fb_write_reg(mx3fb, old_conf, DI_DISP_IF_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700601
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100602 old_conf = mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL) & 0xE0FFFFFF;
603 old_conf |= sig.data_pol << DI_D3_DATA_POL_SHIFT |
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700604 sig.clk_pol << DI_D3_CLK_POL_SHIFT |
605 sig.enable_pol << DI_D3_DRDY_SHARP_POL_SHIFT |
606 sig.Hsync_pol << DI_D3_HSYNC_POL_SHIFT |
607 sig.Vsync_pol << DI_D3_VSYNC_POL_SHIFT;
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100608 mx3fb_write_reg(mx3fb, old_conf, DI_DISP_SIG_POL);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700609
Sascha Hauerf910fb82011-12-01 14:58:52 +0100610 map = &di_mappings[mx3fb->disp_data_fmt];
611 mx3fb_write_reg(mx3fb, map->b0, DI_DISP3_B0_MAP);
612 mx3fb_write_reg(mx3fb, map->b1, DI_DISP3_B1_MAP);
613 mx3fb_write_reg(mx3fb, map->b2, DI_DISP3_B2_MAP);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700614
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100615 spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700616
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100617 dev_dbg(mx3fb->dev, "DI_DISP_IF_CONF = 0x%08X\n",
618 mx3fb_read_reg(mx3fb, DI_DISP_IF_CONF));
619 dev_dbg(mx3fb->dev, "DI_DISP_SIG_POL = 0x%08X\n",
620 mx3fb_read_reg(mx3fb, DI_DISP_SIG_POL));
621 dev_dbg(mx3fb->dev, "DI_DISP3_TIME_CONF = 0x%08X\n",
622 mx3fb_read_reg(mx3fb, DI_DISP3_TIME_CONF));
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700623
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100624 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700625}
626
627/**
628 * sdc_set_color_key() - set the transparent color key for SDC graphic plane.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100629 * @mx3fb: mx3fb context.
630 * @channel: IPU DMAC channel ID.
631 * @enable: boolean to enable or disable color keyl.
632 * @color_key: 24-bit RGB color to use as transparent color key.
633 * @return: 0 on success or negative error code on failure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700634 */
635static int sdc_set_color_key(struct mx3fb_data *mx3fb, enum ipu_channel channel,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100636 bool enable, uint32_t color_key)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700637{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100638 uint32_t reg, sdc_conf;
639 unsigned long lock_flags;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700640
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100641 spin_lock_irqsave(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700642
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100643 sdc_conf = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
644 if (channel == IDMAC_SDC_0)
645 sdc_conf &= ~SDC_COM_GWSEL;
646 else
647 sdc_conf |= SDC_COM_GWSEL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700648
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100649 if (enable) {
650 reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0xFF000000L;
651 mx3fb_write_reg(mx3fb, reg | (color_key & 0x00FFFFFFL),
652 SDC_GW_CTRL);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700653
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100654 sdc_conf |= SDC_COM_KEY_COLOR_G;
655 } else {
656 sdc_conf &= ~SDC_COM_KEY_COLOR_G;
657 }
658 mx3fb_write_reg(mx3fb, sdc_conf, SDC_COM_CONF);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700659
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100660 spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700661
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100662 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700663}
664
665/**
666 * sdc_set_global_alpha() - set global alpha blending modes.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100667 * @mx3fb: mx3fb context.
668 * @enable: boolean to enable or disable global alpha blending. If disabled,
669 * per pixel blending is used.
670 * @alpha: global alpha value.
671 * @return: 0 on success or negative error code on failure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700672 */
673static int sdc_set_global_alpha(struct mx3fb_data *mx3fb, bool enable, uint8_t alpha)
674{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100675 uint32_t reg;
676 unsigned long lock_flags;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700677
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100678 spin_lock_irqsave(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700679
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100680 if (enable) {
681 reg = mx3fb_read_reg(mx3fb, SDC_GW_CTRL) & 0x00FFFFFFL;
682 mx3fb_write_reg(mx3fb, reg | ((uint32_t) alpha << 24), SDC_GW_CTRL);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700683
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100684 reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
685 mx3fb_write_reg(mx3fb, reg | SDC_COM_GLB_A, SDC_COM_CONF);
686 } else {
687 reg = mx3fb_read_reg(mx3fb, SDC_COM_CONF);
688 mx3fb_write_reg(mx3fb, reg & ~SDC_COM_GLB_A, SDC_COM_CONF);
689 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700690
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100691 spin_unlock_irqrestore(&mx3fb->lock, lock_flags);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700692
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100693 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700694}
695
Alexander Stein7edaa762014-05-12 08:34:14 +0200696static u32 sdc_get_brightness(struct mx3fb_data *mx3fb)
697{
698 u32 brightness;
699
700 brightness = mx3fb_read_reg(mx3fb, SDC_PWM_CTRL);
701 brightness = (brightness >> 16) & 0xFF;
702
703 return brightness;
704}
705
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700706static void sdc_set_brightness(struct mx3fb_data *mx3fb, uint8_t value)
707{
Alberto Panizzob3cb5372010-02-02 13:43:59 -0800708 dev_dbg(mx3fb->dev, "%s: value = %d\n", __func__, value);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100709 /* This might be board-specific */
710 mx3fb_write_reg(mx3fb, 0x03000000UL | value << 16, SDC_PWM_CTRL);
711 return;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700712}
713
714static uint32_t bpp_to_pixfmt(int bpp)
715{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100716 uint32_t pixfmt = 0;
717 switch (bpp) {
718 case 24:
719 pixfmt = IPU_PIX_FMT_BGR24;
720 break;
721 case 32:
722 pixfmt = IPU_PIX_FMT_BGR32;
723 break;
724 case 16:
725 pixfmt = IPU_PIX_FMT_RGB565;
726 break;
727 }
728 return pixfmt;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700729}
730
731static int mx3fb_blank(int blank, struct fb_info *fbi);
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700732static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len,
733 bool lock);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700734static int mx3fb_unmap_video_memory(struct fb_info *fbi);
735
736/**
737 * mx3fb_set_fix() - set fixed framebuffer parameters from variable settings.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100738 * @info: framebuffer information pointer
739 * @return: 0 on success or negative error code on failure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700740 */
741static int mx3fb_set_fix(struct fb_info *fbi)
742{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100743 struct fb_fix_screeninfo *fix = &fbi->fix;
744 struct fb_var_screeninfo *var = &fbi->var;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700745
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100746 strncpy(fix->id, "DISP3 BG", 8);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700747
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100748 fix->line_length = var->xres_virtual * var->bits_per_pixel / 8;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700749
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100750 fix->type = FB_TYPE_PACKED_PIXELS;
751 fix->accel = FB_ACCEL_NONE;
752 fix->visual = FB_VISUAL_TRUECOLOR;
753 fix->xpanstep = 1;
754 fix->ypanstep = 1;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700755
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100756 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700757}
758
759static void mx3fb_dma_done(void *arg)
760{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100761 struct idmac_tx_desc *tx_desc = to_tx_desc(arg);
762 struct dma_chan *chan = tx_desc->txd.chan;
763 struct idmac_channel *ichannel = to_idmac_chan(chan);
764 struct mx3fb_data *mx3fb = ichannel->client;
765 struct mx3fb_info *mx3_fbi = mx3fb->fbi->par;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700766
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100767 dev_dbg(mx3fb->dev, "irq %d callback\n", ichannel->eof_irq);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700768
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100769 /* We only need one interrupt, it will be re-enabled as needed */
Guennadi Liakhovetskic8a4fb42009-05-12 21:41:03 +0200770 disable_irq_nosync(ichannel->eof_irq);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700771
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100772 complete(&mx3_fbi->flip_cmpl);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700773}
774
Liu Ying41a490ec2012-06-11 09:06:50 +0800775static bool mx3fb_must_set_par(struct fb_info *fbi)
776{
777 struct mx3fb_info *mx3_fbi = fbi->par;
778 struct fb_var_screeninfo old_var = mx3_fbi->cur_var;
779 struct fb_var_screeninfo new_var = fbi->var;
780
781 if ((fbi->var.activate & FB_ACTIVATE_FORCE) &&
782 (fbi->var.activate & FB_ACTIVATE_MASK) == FB_ACTIVATE_NOW)
783 return true;
784
785 /*
786 * Ignore xoffset and yoffset update,
787 * because pan display handles this case.
788 */
789 old_var.xoffset = new_var.xoffset;
790 old_var.yoffset = new_var.yoffset;
791
792 return !!memcmp(&old_var, &new_var, sizeof(struct fb_var_screeninfo));
793}
794
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700795static int __set_par(struct fb_info *fbi, bool lock)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700796{
Liu Ying6cd77e02012-06-11 09:06:49 +0800797 u32 mem_len, cur_xoffset, cur_yoffset;
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100798 struct ipu_di_signal_cfg sig_cfg;
799 enum ipu_panel mode = IPU_PANEL_TFT;
800 struct mx3fb_info *mx3_fbi = fbi->par;
801 struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
802 struct idmac_channel *ichan = mx3_fbi->idmac_channel;
803 struct idmac_video_param *video = &ichan->params.video;
804 struct scatterlist *sg = mx3_fbi->sg;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700805
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100806 /* Total cleanup */
807 if (mx3_fbi->txd)
808 sdc_disable_channel(mx3_fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700809
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100810 mx3fb_set_fix(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700811
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100812 mem_len = fbi->var.yres_virtual * fbi->fix.line_length;
813 if (mem_len > fbi->fix.smem_len) {
814 if (fbi->fix.smem_start)
815 mx3fb_unmap_video_memory(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700816
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700817 if (mx3fb_map_video_memory(fbi, mem_len, lock) < 0)
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100818 return -ENOMEM;
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100819 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700820
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100821 sg_init_table(&sg[0], 1);
822 sg_init_table(&sg[1], 1);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700823
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -0700824 sg_dma_address(&sg[0]) = fbi->fix.smem_start;
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100825 sg_set_page(&sg[0], virt_to_page(fbi->screen_base),
826 fbi->fix.smem_len,
827 offset_in_page(fbi->screen_base));
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700828
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100829 if (mx3_fbi->ipu_ch == IDMAC_SDC_0) {
830 memset(&sig_cfg, 0, sizeof(sig_cfg));
831 if (fbi->var.sync & FB_SYNC_HOR_HIGH_ACT)
832 sig_cfg.Hsync_pol = true;
833 if (fbi->var.sync & FB_SYNC_VERT_HIGH_ACT)
834 sig_cfg.Vsync_pol = true;
835 if (fbi->var.sync & FB_SYNC_CLK_INVERT)
836 sig_cfg.clk_pol = true;
837 if (fbi->var.sync & FB_SYNC_DATA_INVERT)
838 sig_cfg.data_pol = true;
839 if (fbi->var.sync & FB_SYNC_OE_ACT_HIGH)
840 sig_cfg.enable_pol = true;
841 if (fbi->var.sync & FB_SYNC_CLK_IDLE_EN)
842 sig_cfg.clkidle_en = true;
843 if (fbi->var.sync & FB_SYNC_CLK_SEL_EN)
844 sig_cfg.clksel_en = true;
845 if (fbi->var.sync & FB_SYNC_SHARP_MODE)
846 mode = IPU_PANEL_SHARP_TFT;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700847
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100848 dev_dbg(fbi->device, "pixclock = %ul Hz\n",
849 (u32) (PICOS2KHZ(fbi->var.pixclock) * 1000UL));
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700850
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100851 if (sdc_init_panel(mx3fb, mode,
852 (PICOS2KHZ(fbi->var.pixclock)) * 1000UL,
853 fbi->var.xres, fbi->var.yres,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100854 fbi->var.left_margin,
855 fbi->var.hsync_len,
856 fbi->var.right_margin +
857 fbi->var.hsync_len,
858 fbi->var.upper_margin,
859 fbi->var.vsync_len,
860 fbi->var.lower_margin +
861 fbi->var.vsync_len, sig_cfg) != 0) {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100862 dev_err(fbi->device,
863 "mx3fb: Error initializing panel.\n");
864 return -EINVAL;
865 }
866 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700867
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100868 sdc_set_window_pos(mx3fb, mx3_fbi->ipu_ch, 0, 0);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700869
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100870 mx3_fbi->cur_ipu_buf = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700871
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100872 video->out_pixel_fmt = bpp_to_pixfmt(fbi->var.bits_per_pixel);
873 video->out_width = fbi->var.xres;
874 video->out_height = fbi->var.yres;
875 video->out_stride = fbi->var.xres_virtual;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700876
Liu Ying6cd77e02012-06-11 09:06:49 +0800877 if (mx3_fbi->blank == FB_BLANK_UNBLANK) {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100878 sdc_enable_channel(mx3_fbi);
Liu Ying6cd77e02012-06-11 09:06:49 +0800879 /*
880 * sg[0] points to fb smem_start address
881 * and is actually active in controller.
882 */
883 mx3_fbi->cur_var.xoffset = 0;
884 mx3_fbi->cur_var.yoffset = 0;
885 }
886
887 /*
888 * Preserve xoffset and yoffest in case they are
889 * inactive in controller as fb is blanked.
890 */
891 cur_xoffset = mx3_fbi->cur_var.xoffset;
892 cur_yoffset = mx3_fbi->cur_var.yoffset;
893 mx3_fbi->cur_var = fbi->var;
894 mx3_fbi->cur_var.xoffset = cur_xoffset;
895 mx3_fbi->cur_var.yoffset = cur_yoffset;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700896
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700897 return 0;
898}
899
900/**
901 * mx3fb_set_par() - set framebuffer parameters and change the operating mode.
902 * @fbi: framebuffer information pointer.
903 * @return: 0 on success or negative error code on failure.
904 */
905static int mx3fb_set_par(struct fb_info *fbi)
906{
907 struct mx3fb_info *mx3_fbi = fbi->par;
908 struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
909 struct idmac_channel *ichan = mx3_fbi->idmac_channel;
910 int ret;
911
912 dev_dbg(mx3fb->dev, "%s [%c]\n", __func__, list_empty(&ichan->queue) ? '-' : '+');
913
914 mutex_lock(&mx3_fbi->mutex);
915
Liu Ying41a490ec2012-06-11 09:06:50 +0800916 ret = mx3fb_must_set_par(fbi) ? __set_par(fbi, true) : 0;
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700917
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100918 mutex_unlock(&mx3_fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700919
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -0700920 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700921}
922
923/**
924 * mx3fb_check_var() - check and adjust framebuffer variable parameters.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100925 * @var: framebuffer variable parameters
926 * @fbi: framebuffer information pointer
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700927 */
928static int mx3fb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
929{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100930 struct mx3fb_info *mx3_fbi = fbi->par;
931 u32 vtotal;
932 u32 htotal;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700933
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100934 dev_dbg(fbi->device, "%s\n", __func__);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700935
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100936 if (var->xres_virtual < var->xres)
937 var->xres_virtual = var->xres;
938 if (var->yres_virtual < var->yres)
939 var->yres_virtual = var->yres;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700940
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100941 if ((var->bits_per_pixel != 32) && (var->bits_per_pixel != 24) &&
942 (var->bits_per_pixel != 16))
943 var->bits_per_pixel = default_bpp;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700944
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100945 switch (var->bits_per_pixel) {
946 case 16:
947 var->red.length = 5;
948 var->red.offset = 11;
949 var->red.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700950
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100951 var->green.length = 6;
952 var->green.offset = 5;
953 var->green.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700954
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100955 var->blue.length = 5;
956 var->blue.offset = 0;
957 var->blue.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700958
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100959 var->transp.length = 0;
960 var->transp.offset = 0;
961 var->transp.msb_right = 0;
962 break;
963 case 24:
964 var->red.length = 8;
965 var->red.offset = 16;
966 var->red.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700967
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100968 var->green.length = 8;
969 var->green.offset = 8;
970 var->green.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700971
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100972 var->blue.length = 8;
973 var->blue.offset = 0;
974 var->blue.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700975
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100976 var->transp.length = 0;
977 var->transp.offset = 0;
978 var->transp.msb_right = 0;
979 break;
980 case 32:
981 var->red.length = 8;
982 var->red.offset = 16;
983 var->red.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700984
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100985 var->green.length = 8;
986 var->green.offset = 8;
987 var->green.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700988
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100989 var->blue.length = 8;
990 var->blue.offset = 0;
991 var->blue.msb_right = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700992
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100993 var->transp.length = 8;
994 var->transp.offset = 24;
995 var->transp.msb_right = 0;
996 break;
997 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -0700998
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +0100999 if (var->pixclock < 1000) {
1000 htotal = var->xres + var->right_margin + var->hsync_len +
1001 var->left_margin;
1002 vtotal = var->yres + var->lower_margin + var->vsync_len +
1003 var->upper_margin;
1004 var->pixclock = (vtotal * htotal * 6UL) / 100UL;
1005 var->pixclock = KHZ2PICOS(var->pixclock);
1006 dev_dbg(fbi->device, "pixclock set for 60Hz refresh = %u ps\n",
1007 var->pixclock);
1008 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001009
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001010 var->height = -1;
1011 var->width = -1;
1012 var->grayscale = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001013
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001014 /* Preserve sync flags */
Liu Ying6cd77e02012-06-11 09:06:49 +08001015 var->sync |= mx3_fbi->cur_var.sync;
1016 mx3_fbi->cur_var.sync |= var->sync;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001017
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001018 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001019}
1020
1021static u32 chan_to_field(unsigned int chan, struct fb_bitfield *bf)
1022{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001023 chan &= 0xffff;
1024 chan >>= 16 - bf->length;
1025 return chan << bf->offset;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001026}
1027
1028static int mx3fb_setcolreg(unsigned int regno, unsigned int red,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001029 unsigned int green, unsigned int blue,
1030 unsigned int trans, struct fb_info *fbi)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001031{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001032 struct mx3fb_info *mx3_fbi = fbi->par;
1033 u32 val;
1034 int ret = 1;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001035
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -07001036 dev_dbg(fbi->device, "%s, regno = %u\n", __func__, regno);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001037
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001038 mutex_lock(&mx3_fbi->mutex);
1039 /*
1040 * If greyscale is true, then we convert the RGB value
1041 * to greyscale no matter what visual we are using.
1042 */
1043 if (fbi->var.grayscale)
1044 red = green = blue = (19595 * red + 38470 * green +
1045 7471 * blue) >> 16;
1046 switch (fbi->fix.visual) {
1047 case FB_VISUAL_TRUECOLOR:
1048 /*
1049 * 16-bit True Colour. We encode the RGB value
1050 * according to the RGB bitfield information.
1051 */
1052 if (regno < 16) {
1053 u32 *pal = fbi->pseudo_palette;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001054
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001055 val = chan_to_field(red, &fbi->var.red);
1056 val |= chan_to_field(green, &fbi->var.green);
1057 val |= chan_to_field(blue, &fbi->var.blue);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001058
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001059 pal[regno] = val;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001060
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001061 ret = 0;
1062 }
1063 break;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001064
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001065 case FB_VISUAL_STATIC_PSEUDOCOLOR:
1066 case FB_VISUAL_PSEUDOCOLOR:
1067 break;
1068 }
1069 mutex_unlock(&mx3_fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001070
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001071 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001072}
1073
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001074static void __blank(int blank, struct fb_info *fbi)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001075{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001076 struct mx3fb_info *mx3_fbi = fbi->par;
1077 struct mx3fb_data *mx3fb = mx3_fbi->mx3fb;
Wolfram Stering8b53b7f2011-09-23 14:09:35 +02001078 int was_blank = mx3_fbi->blank;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001079
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001080 mx3_fbi->blank = blank;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001081
Wolfram Stering8b53b7f2011-09-23 14:09:35 +02001082 /* Attention!
1083 * Do not call sdc_disable_channel() for a channel that is disabled
1084 * already! This will result in a kernel NULL pointer dereference
1085 * (mx3_fbi->txd is NULL). Hide the fact, that all blank modes are
1086 * handled equally by this driver.
1087 */
1088 if (blank > FB_BLANK_UNBLANK && was_blank > FB_BLANK_UNBLANK)
1089 return;
1090
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001091 switch (blank) {
1092 case FB_BLANK_POWERDOWN:
1093 case FB_BLANK_VSYNC_SUSPEND:
1094 case FB_BLANK_HSYNC_SUSPEND:
1095 case FB_BLANK_NORMAL:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001096 sdc_set_brightness(mx3fb, 0);
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -07001097 memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
1098 /* Give LCD time to update - enough for 50 and 60 Hz */
1099 msleep(25);
1100 sdc_disable_channel(mx3_fbi);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001101 break;
1102 case FB_BLANK_UNBLANK:
1103 sdc_enable_channel(mx3_fbi);
1104 sdc_set_brightness(mx3fb, mx3fb->backlight_level);
1105 break;
1106 }
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001107}
1108
1109/**
1110 * mx3fb_blank() - blank the display.
1111 */
1112static int mx3fb_blank(int blank, struct fb_info *fbi)
1113{
1114 struct mx3fb_info *mx3_fbi = fbi->par;
1115
1116 dev_dbg(fbi->device, "%s, blank = %d, base %p, len %u\n", __func__,
1117 blank, fbi->screen_base, fbi->fix.smem_len);
1118
1119 if (mx3_fbi->blank == blank)
1120 return 0;
1121
1122 mutex_lock(&mx3_fbi->mutex);
1123 __blank(blank, fbi);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001124 mutex_unlock(&mx3_fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001125
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001126 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001127}
1128
1129/**
1130 * mx3fb_pan_display() - pan or wrap the display
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001131 * @var: variable screen buffer information.
1132 * @info: framebuffer information pointer.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001133 *
1134 * We look only at xoffset, yoffset and the FB_VMODE_YWRAP flag
1135 */
1136static int mx3fb_pan_display(struct fb_var_screeninfo *var,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001137 struct fb_info *fbi)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001138{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001139 struct mx3fb_info *mx3_fbi = fbi->par;
1140 u32 y_bottom;
1141 unsigned long base;
1142 off_t offset;
1143 dma_cookie_t cookie;
1144 struct scatterlist *sg = mx3_fbi->sg;
1145 struct dma_chan *dma_chan = &mx3_fbi->idmac_channel->dma_chan;
1146 struct dma_async_tx_descriptor *txd;
1147 int ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001148
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001149 dev_dbg(fbi->device, "%s [%c]\n", __func__,
1150 list_empty(&mx3_fbi->idmac_channel->queue) ? '-' : '+');
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001151
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001152 if (var->xoffset > 0) {
1153 dev_dbg(fbi->device, "x panning not supported\n");
1154 return -EINVAL;
1155 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001156
Liu Ying6cd77e02012-06-11 09:06:49 +08001157 if (mx3_fbi->cur_var.xoffset == var->xoffset &&
1158 mx3_fbi->cur_var.yoffset == var->yoffset)
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001159 return 0; /* No change, do nothing */
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001160
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001161 y_bottom = var->yoffset;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001162
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001163 if (!(var->vmode & FB_VMODE_YWRAP))
Laurent Pinchart9f1b3eb2011-05-25 11:34:52 +02001164 y_bottom += fbi->var.yres;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001165
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001166 if (y_bottom > fbi->var.yres_virtual)
1167 return -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001168
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001169 mutex_lock(&mx3_fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001170
Laurent Pinchart9f1b3eb2011-05-25 11:34:52 +02001171 offset = var->yoffset * fbi->fix.line_length
1172 + var->xoffset * (fbi->var.bits_per_pixel / 8);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001173 base = fbi->fix.smem_start + offset;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001174
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001175 dev_dbg(fbi->device, "Updating SDC BG buf %d address=0x%08lX\n",
1176 mx3_fbi->cur_ipu_buf, base);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001177
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001178 /*
1179 * We enable the End of Frame interrupt, which will free a tx-descriptor,
Geert Uytterhoeven87306c12014-07-11 18:13:27 +02001180 * which we will need for the next dmaengine_prep_slave_sg(). The
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001181 * IRQ-handler will disable the IRQ again.
1182 */
1183 init_completion(&mx3_fbi->flip_cmpl);
1184 enable_irq(mx3_fbi->idmac_channel->eof_irq);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001185
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001186 ret = wait_for_completion_timeout(&mx3_fbi->flip_cmpl, HZ / 10);
1187 if (ret <= 0) {
1188 mutex_unlock(&mx3_fbi->mutex);
1189 dev_info(fbi->device, "Panning failed due to %s\n", ret < 0 ?
1190 "user interrupt" : "timeout");
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -07001191 disable_irq(mx3_fbi->idmac_channel->eof_irq);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001192 return ret ? : -ETIMEDOUT;
1193 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001194
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001195 mx3_fbi->cur_ipu_buf = !mx3_fbi->cur_ipu_buf;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001196
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001197 sg_dma_address(&sg[mx3_fbi->cur_ipu_buf]) = base;
1198 sg_set_page(&sg[mx3_fbi->cur_ipu_buf],
1199 virt_to_page(fbi->screen_base + offset), fbi->fix.smem_len,
1200 offset_in_page(fbi->screen_base + offset));
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001201
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -07001202 if (mx3_fbi->txd)
1203 async_tx_ack(mx3_fbi->txd);
1204
Alexandre Bounine16052822012-03-08 16:11:18 -05001205 txd = dmaengine_prep_slave_sg(dma_chan, sg +
Vinod Koul1003cab2011-10-14 10:39:23 +05301206 mx3_fbi->cur_ipu_buf, 1, DMA_MEM_TO_DEV, DMA_PREP_INTERRUPT);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001207 if (!txd) {
1208 dev_err(fbi->device,
1209 "Error preparing a DMA transaction descriptor.\n");
1210 mutex_unlock(&mx3_fbi->mutex);
1211 return -EIO;
1212 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001213
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001214 txd->callback_param = txd;
1215 txd->callback = mx3fb_dma_done;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001216
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001217 /*
1218 * Emulate original mx3fb behaviour: each new call to idmac_tx_submit()
1219 * should switch to another buffer
1220 */
1221 cookie = txd->tx_submit(txd);
1222 dev_dbg(fbi->device, "%d: Submit %p #%d\n", __LINE__, txd, cookie);
1223 if (cookie < 0) {
1224 dev_err(fbi->device,
1225 "Error updating SDC buf %d to address=0x%08lX\n",
1226 mx3_fbi->cur_ipu_buf, base);
1227 mutex_unlock(&mx3_fbi->mutex);
1228 return -EIO;
1229 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001230
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001231 mx3_fbi->txd = txd;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001232
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001233 fbi->var.xoffset = var->xoffset;
1234 fbi->var.yoffset = var->yoffset;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001235
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001236 if (var->vmode & FB_VMODE_YWRAP)
1237 fbi->var.vmode |= FB_VMODE_YWRAP;
1238 else
1239 fbi->var.vmode &= ~FB_VMODE_YWRAP;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001240
Liu Ying6cd77e02012-06-11 09:06:49 +08001241 mx3_fbi->cur_var = fbi->var;
1242
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001243 mutex_unlock(&mx3_fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001244
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001245 dev_dbg(fbi->device, "Update complete\n");
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001246
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001247 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001248}
1249
1250/*
1251 * This structure contains the pointers to the control functions that are
1252 * invoked by the core framebuffer driver to perform operations like
1253 * blitting, rectangle filling, copy regions and cursor definition.
1254 */
1255static struct fb_ops mx3fb_ops = {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001256 .owner = THIS_MODULE,
1257 .fb_set_par = mx3fb_set_par,
1258 .fb_check_var = mx3fb_check_var,
1259 .fb_setcolreg = mx3fb_setcolreg,
1260 .fb_pan_display = mx3fb_pan_display,
1261 .fb_fillrect = cfb_fillrect,
1262 .fb_copyarea = cfb_copyarea,
1263 .fb_imageblit = cfb_imageblit,
1264 .fb_blank = mx3fb_blank,
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001265};
1266
1267#ifdef CONFIG_PM
1268/*
1269 * Power management hooks. Note that we won't be called from IRQ context,
1270 * unlike the blank functions above, so we may sleep.
1271 */
1272
1273/*
1274 * Suspends the framebuffer and blanks the screen. Power management support
1275 */
1276static int mx3fb_suspend(struct platform_device *pdev, pm_message_t state)
1277{
Sascha Hauerb09de422009-04-08 11:45:47 +02001278 struct mx3fb_data *mx3fb = platform_get_drvdata(pdev);
1279 struct mx3fb_info *mx3_fbi = mx3fb->fbi->par;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001280
Torben Hohnac751ef2011-01-25 15:07:35 -08001281 console_lock();
Sascha Hauerb09de422009-04-08 11:45:47 +02001282 fb_set_suspend(mx3fb->fbi, 1);
Torben Hohnac751ef2011-01-25 15:07:35 -08001283 console_unlock();
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001284
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001285 if (mx3_fbi->blank == FB_BLANK_UNBLANK) {
1286 sdc_disable_channel(mx3_fbi);
1287 sdc_set_brightness(mx3fb, 0);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001288
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001289 }
1290 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001291}
1292
1293/*
1294 * Resumes the framebuffer and unblanks the screen. Power management support
1295 */
1296static int mx3fb_resume(struct platform_device *pdev)
1297{
Sascha Hauerb09de422009-04-08 11:45:47 +02001298 struct mx3fb_data *mx3fb = platform_get_drvdata(pdev);
1299 struct mx3fb_info *mx3_fbi = mx3fb->fbi->par;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001300
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001301 if (mx3_fbi->blank == FB_BLANK_UNBLANK) {
1302 sdc_enable_channel(mx3_fbi);
Sascha Hauerb09de422009-04-08 11:45:47 +02001303 sdc_set_brightness(mx3fb, mx3fb->backlight_level);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001304 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001305
Torben Hohnac751ef2011-01-25 15:07:35 -08001306 console_lock();
Sascha Hauerb09de422009-04-08 11:45:47 +02001307 fb_set_suspend(mx3fb->fbi, 0);
Torben Hohnac751ef2011-01-25 15:07:35 -08001308 console_unlock();
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001309
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001310 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001311}
1312#else
1313#define mx3fb_suspend NULL
1314#define mx3fb_resume NULL
1315#endif
1316
1317/*
1318 * Main framebuffer functions
1319 */
1320
1321/**
1322 * mx3fb_map_video_memory() - allocates the DRAM memory for the frame buffer.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001323 * @fbi: framebuffer information pointer
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001324 * @mem_len: length of mapped memory
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001325 * @lock: do not lock during initialisation
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001326 * @return: Error code indicating success or failure
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001327 *
1328 * This buffer is remapped into a non-cached, non-buffered, memory region to
1329 * allow palette and pixel writes to occur without flushing the cache. Once this
1330 * area is remapped, all virtual memory access to the video memory should occur
1331 * at the new region.
1332 */
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001333static int mx3fb_map_video_memory(struct fb_info *fbi, unsigned int mem_len,
1334 bool lock)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001335{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001336 int retval = 0;
1337 dma_addr_t addr;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001338
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001339 fbi->screen_base = dma_alloc_writecombine(fbi->device,
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001340 mem_len,
Sascha Hauer4d32d042013-12-19 09:23:08 +01001341 &addr, GFP_DMA | GFP_KERNEL);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001342
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001343 if (!fbi->screen_base) {
1344 dev_err(fbi->device, "Cannot allocate %u bytes framebuffer memory\n",
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001345 mem_len);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001346 retval = -EBUSY;
1347 goto err0;
1348 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001349
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001350 if (lock)
1351 mutex_lock(&fbi->mm_lock);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001352 fbi->fix.smem_start = addr;
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001353 fbi->fix.smem_len = mem_len;
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001354 if (lock)
1355 mutex_unlock(&fbi->mm_lock);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001356
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001357 dev_dbg(fbi->device, "allocated fb @ p=0x%08x, v=0x%p, size=%d.\n",
1358 (uint32_t) fbi->fix.smem_start, fbi->screen_base, fbi->fix.smem_len);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001359
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001360 fbi->screen_size = fbi->fix.smem_len;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001361
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001362 /* Clear the screen */
1363 memset((char *)fbi->screen_base, 0, fbi->fix.smem_len);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001364
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001365 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001366
1367err0:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001368 fbi->fix.smem_len = 0;
1369 fbi->fix.smem_start = 0;
1370 fbi->screen_base = NULL;
1371 return retval;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001372}
1373
1374/**
1375 * mx3fb_unmap_video_memory() - de-allocate frame buffer memory.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001376 * @fbi: framebuffer information pointer
1377 * @return: error code indicating success or failure
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001378 */
1379static int mx3fb_unmap_video_memory(struct fb_info *fbi)
1380{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001381 dma_free_writecombine(fbi->device, fbi->fix.smem_len,
1382 fbi->screen_base, fbi->fix.smem_start);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001383
Fabio Estevamf3d84962013-02-21 16:42:39 -08001384 fbi->screen_base = NULL;
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001385 mutex_lock(&fbi->mm_lock);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001386 fbi->fix.smem_start = 0;
1387 fbi->fix.smem_len = 0;
Krzysztof Helt537a1bf2009-06-30 11:41:29 -07001388 mutex_unlock(&fbi->mm_lock);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001389 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001390}
1391
1392/**
1393 * mx3fb_init_fbinfo() - initialize framebuffer information object.
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001394 * @return: initialized framebuffer structure.
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001395 */
1396static struct fb_info *mx3fb_init_fbinfo(struct device *dev, struct fb_ops *ops)
1397{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001398 struct fb_info *fbi;
1399 struct mx3fb_info *mx3fbi;
1400 int ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001401
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001402 /* Allocate sufficient memory for the fb structure */
1403 fbi = framebuffer_alloc(sizeof(struct mx3fb_info), dev);
1404 if (!fbi)
1405 return NULL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001406
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001407 mx3fbi = fbi->par;
1408 mx3fbi->cookie = -EINVAL;
1409 mx3fbi->cur_ipu_buf = 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001410
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001411 fbi->var.activate = FB_ACTIVATE_NOW;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001412
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001413 fbi->fbops = ops;
1414 fbi->flags = FBINFO_FLAG_DEFAULT;
1415 fbi->pseudo_palette = mx3fbi->pseudo_palette;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001416
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001417 mutex_init(&mx3fbi->mutex);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001418
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001419 /* Allocate colormap */
1420 ret = fb_alloc_cmap(&fbi->cmap, 16, 0);
1421 if (ret < 0) {
1422 framebuffer_release(fbi);
1423 return NULL;
1424 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001425
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001426 return fbi;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001427}
1428
1429static int init_fb_chan(struct mx3fb_data *mx3fb, struct idmac_channel *ichan)
1430{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001431 struct device *dev = mx3fb->dev;
Jingoo Han521fdb72013-09-17 13:57:22 +09001432 struct mx3fb_platform_data *mx3fb_pdata = dev_get_platdata(dev);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001433 const char *name = mx3fb_pdata->name;
1434 unsigned int irq;
1435 struct fb_info *fbi;
1436 struct mx3fb_info *mx3fbi;
1437 const struct fb_videomode *mode;
1438 int ret, num_modes;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001439
Sascha Hauerf910fb82011-12-01 14:58:52 +01001440 if (mx3fb_pdata->disp_data_fmt >= ARRAY_SIZE(di_mappings)) {
1441 dev_err(dev, "Illegal display data format %d\n",
1442 mx3fb_pdata->disp_data_fmt);
1443 return -EINVAL;
1444 }
1445
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001446 ichan->client = mx3fb;
1447 irq = ichan->eof_irq;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001448
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001449 if (ichan->dma_chan.chan_id != IDMAC_SDC_0)
1450 return -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001451
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001452 fbi = mx3fb_init_fbinfo(dev, &mx3fb_ops);
1453 if (!fbi)
1454 return -ENOMEM;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001455
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001456 if (!fb_mode)
1457 fb_mode = name;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001458
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001459 if (!fb_mode) {
1460 ret = -EINVAL;
1461 goto emode;
1462 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001463
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001464 if (mx3fb_pdata->mode && mx3fb_pdata->num_modes) {
1465 mode = mx3fb_pdata->mode;
1466 num_modes = mx3fb_pdata->num_modes;
1467 } else {
1468 mode = mx3fb_modedb;
1469 num_modes = ARRAY_SIZE(mx3fb_modedb);
1470 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001471
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001472 if (!fb_find_mode(&fbi->var, fbi, fb_mode, mode,
1473 num_modes, NULL, default_bpp)) {
1474 ret = -EBUSY;
1475 goto emode;
1476 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001477
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001478 fb_videomode_to_modelist(mode, num_modes, &fbi->modelist);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001479
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001480 /* Default Y virtual size is 2x panel size */
1481 fbi->var.yres_virtual = fbi->var.yres * 2;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001482
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001483 mx3fb->fbi = fbi;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001484
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001485 /* set Display Interface clock period */
1486 mx3fb_write_reg(mx3fb, 0x00100010L, DI_HSP_CLK_PER);
1487 /* Might need to trigger HSP clock change - see 44.3.3.8.5 */
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001488
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001489 sdc_set_brightness(mx3fb, 255);
1490 sdc_set_global_alpha(mx3fb, true, 0xFF);
1491 sdc_set_color_key(mx3fb, IDMAC_SDC_0, false, 0);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001492
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001493 mx3fbi = fbi->par;
1494 mx3fbi->idmac_channel = ichan;
1495 mx3fbi->ipu_ch = ichan->dma_chan.chan_id;
1496 mx3fbi->mx3fb = mx3fb;
1497 mx3fbi->blank = FB_BLANK_NORMAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001498
Sascha Hauerf910fb82011-12-01 14:58:52 +01001499 mx3fb->disp_data_fmt = mx3fb_pdata->disp_data_fmt;
1500
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001501 init_completion(&mx3fbi->flip_cmpl);
1502 disable_irq(ichan->eof_irq);
1503 dev_dbg(mx3fb->dev, "disabling irq %d\n", ichan->eof_irq);
Guennadi Liakhovetski20de03d2009-08-06 15:07:40 -07001504 ret = __set_par(fbi, false);
1505 if (ret < 0)
1506 goto esetpar;
1507
1508 __blank(FB_BLANK_UNBLANK, fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001509
Sascha Hauer2eec8c32009-03-20 20:27:37 +01001510 dev_info(dev, "registered, using mode %s\n", fb_mode);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001511
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001512 ret = register_framebuffer(fbi);
1513 if (ret < 0)
1514 goto erfb;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001515
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001516 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001517
1518erfb:
1519esetpar:
1520emode:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001521 fb_dealloc_cmap(&fbi->cmap);
1522 framebuffer_release(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001523
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001524 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001525}
1526
1527static bool chan_filter(struct dma_chan *chan, void *arg)
1528{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001529 struct dma_chan_request *rq = arg;
1530 struct device *dev;
1531 struct mx3fb_platform_data *mx3fb_pdata;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001532
Sascha Hauer1b346af2010-08-16 08:03:04 +02001533 if (!imx_dma_is_ipu(chan))
1534 return false;
1535
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001536 if (!rq)
1537 return false;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001538
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001539 dev = rq->mx3fb->dev;
Jingoo Han521fdb72013-09-17 13:57:22 +09001540 mx3fb_pdata = dev_get_platdata(dev);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001541
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001542 return rq->id == chan->chan_id &&
1543 mx3fb_pdata->dma_dev == chan->device->dev;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001544}
1545
1546static void release_fbi(struct fb_info *fbi)
1547{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001548 mx3fb_unmap_video_memory(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001549
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001550 fb_dealloc_cmap(&fbi->cmap);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001551
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001552 unregister_framebuffer(fbi);
1553 framebuffer_release(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001554}
1555
1556static int mx3fb_probe(struct platform_device *pdev)
1557{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001558 struct device *dev = &pdev->dev;
1559 int ret;
1560 struct resource *sdc_reg;
1561 struct mx3fb_data *mx3fb;
1562 dma_cap_mask_t mask;
1563 struct dma_chan *chan;
1564 struct dma_chan_request rq;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001565
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001566 /*
1567 * Display Interface (DI) and Synchronous Display Controller (SDC)
1568 * registers
1569 */
1570 sdc_reg = platform_get_resource(pdev, IORESOURCE_MEM, 0);
1571 if (!sdc_reg)
1572 return -EINVAL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001573
Denis Cariklic58f6612014-03-14 10:12:45 +01001574 mx3fb = devm_kzalloc(&pdev->dev, sizeof(*mx3fb), GFP_KERNEL);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001575 if (!mx3fb)
1576 return -ENOMEM;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001577
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001578 spin_lock_init(&mx3fb->lock);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001579
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001580 mx3fb->reg_base = ioremap(sdc_reg->start, resource_size(sdc_reg));
1581 if (!mx3fb->reg_base) {
1582 ret = -ENOMEM;
1583 goto eremap;
1584 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001585
Joe Perches3b80ffd2010-12-13 13:42:21 -08001586 pr_debug("Remapped %pR at %p\n", sdc_reg, mx3fb->reg_base);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001587
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001588 /* IDMAC interface */
1589 dmaengine_get();
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001590
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001591 mx3fb->dev = dev;
1592 platform_set_drvdata(pdev, mx3fb);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001593
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001594 rq.mx3fb = mx3fb;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001595
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001596 dma_cap_zero(mask);
1597 dma_cap_set(DMA_SLAVE, mask);
1598 dma_cap_set(DMA_PRIVATE, mask);
1599 rq.id = IDMAC_SDC_0;
1600 chan = dma_request_channel(mask, chan_filter, &rq);
1601 if (!chan) {
1602 ret = -EBUSY;
1603 goto ersdc0;
1604 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001605
Alberto Panizzob3cb5372010-02-02 13:43:59 -08001606 mx3fb->backlight_level = 255;
1607
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001608 ret = init_fb_chan(mx3fb, to_idmac_chan(chan));
1609 if (ret < 0)
1610 goto eisdc0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001611
Alexander Stein7edaa762014-05-12 08:34:14 +02001612 mx3fb_init_backlight(mx3fb);
1613
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001614 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001615
1616eisdc0:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001617 dma_release_channel(chan);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001618ersdc0:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001619 dmaengine_put();
1620 iounmap(mx3fb->reg_base);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001621eremap:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001622 dev_err(dev, "mx3fb: failed to register fb\n");
1623 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001624}
1625
1626static int mx3fb_remove(struct platform_device *dev)
1627{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001628 struct mx3fb_data *mx3fb = platform_get_drvdata(dev);
1629 struct fb_info *fbi = mx3fb->fbi;
1630 struct mx3fb_info *mx3_fbi = fbi->par;
1631 struct dma_chan *chan;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001632
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001633 chan = &mx3_fbi->idmac_channel->dma_chan;
1634 release_fbi(fbi);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001635
Alexander Stein7edaa762014-05-12 08:34:14 +02001636 mx3fb_exit_backlight(mx3fb);
1637
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001638 dma_release_channel(chan);
1639 dmaengine_put();
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001640
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001641 iounmap(mx3fb->reg_base);
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001642 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001643}
1644
1645static struct platform_driver mx3fb_driver = {
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001646 .driver = {
Uwe Kleine-König4a0ea002012-10-05 11:20:07 +02001647 .name = MX3FB_NAME,
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001648 },
1649 .probe = mx3fb_probe,
1650 .remove = mx3fb_remove,
1651 .suspend = mx3fb_suspend,
1652 .resume = mx3fb_resume,
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001653};
1654
1655/*
1656 * Parse user specified options (`video=mx3fb:')
1657 * example:
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001658 * video=mx3fb:bpp=16
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001659 */
Guennadi Liakhovetskid88ca8152009-04-06 19:01:05 -07001660static int __init mx3fb_setup(void)
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001661{
1662#ifndef MODULE
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001663 char *opt, *options = NULL;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001664
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001665 if (fb_get_options("mx3fb", &options))
1666 return -ENODEV;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001667
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001668 if (!options || !*options)
1669 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001670
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001671 while ((opt = strsep(&options, ",")) != NULL) {
1672 if (!*opt)
1673 continue;
1674 if (!strncmp(opt, "bpp=", 4))
1675 default_bpp = simple_strtoul(opt + 4, NULL, 0);
1676 else
1677 fb_mode = opt;
1678 }
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001679#endif
1680
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001681 return 0;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001682}
1683
1684static int __init mx3fb_init(void)
1685{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001686 int ret = mx3fb_setup();
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001687
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001688 if (ret < 0)
1689 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001690
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001691 ret = platform_driver_register(&mx3fb_driver);
1692 return ret;
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001693}
1694
1695static void __exit mx3fb_exit(void)
1696{
Guennadi Liakhovetski6e1588cb2009-02-26 21:34:28 +01001697 platform_driver_unregister(&mx3fb_driver);
Guennadi Liakhovetski86528da2009-01-21 10:32:34 -07001698}
1699
1700module_init(mx3fb_init);
1701module_exit(mx3fb_exit);
1702
1703MODULE_AUTHOR("Freescale Semiconductor, Inc.");
1704MODULE_DESCRIPTION("MX3 framebuffer driver");
1705MODULE_ALIAS("platform:" MX3FB_NAME);
1706MODULE_LICENSE("GPL v2");