OMAP: add TI OMAP framebuffer driver
- Add Texas Instruments OMAP framebuffer driver. This driver is being used
for various OMAP1/2 series based boards and products e.g Nokia N800 Internet
Tablet, H4, H3, Siemens SX1 etc.
- LCD panel registration and controller code is separated in different file
and interfaces.
Signed-off-by: Trilok Soni <soni.trilok@gmail.com>
Cc: Tony Lindgren <tony@atomide.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/drivers/video/omap/omapfb_main.c b/drivers/video/omap/omapfb_main.c
new file mode 100644
index 0000000..14d0f7a
--- /dev/null
+++ b/drivers/video/omap/omapfb_main.c
@@ -0,0 +1,1941 @@
+/*
+ * Framebuffer driver for TI OMAP boards
+ *
+ * Copyright (C) 2004 Nokia Corporation
+ * Author: Imre Deak <imre.deak@nokia.com>
+ *
+ * Acknowledgements:
+ * Alex McMains <aam@ridgerun.com> - Original driver
+ * Juha Yrjola <juha.yrjola@nokia.com> - Original driver and improvements
+ * Dirk Behme <dirk.behme@de.bosch.com> - changes for 2.6 kernel API
+ * Texas Instruments - H3 support
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.
+ *
+ * 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, write to the Free Software Foundation, Inc.,
+ * 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+#include <linux/platform_device.h>
+#include <linux/uaccess.h>
+
+#include <asm/mach-types.h>
+#include <asm/arch/dma.h>
+#include <asm/arch/omapfb.h>
+
+#define MODULE_NAME "omapfb"
+
+static unsigned int def_accel;
+static unsigned long def_vram[OMAPFB_PLANE_NUM];
+static int def_vram_cnt;
+static unsigned long def_vxres;
+static unsigned long def_vyres;
+static unsigned int def_rotate;
+static unsigned int def_mirror;
+
+#ifdef CONFIG_FB_OMAP_MANUAL_UPDATE
+static int manual_update = 1;
+#else
+static int manual_update;
+#endif
+
+static struct platform_device *fbdev_pdev;
+static struct lcd_panel *fbdev_panel;
+static struct omapfb_device *omapfb_dev;
+
+struct caps_table_struct {
+ unsigned long flag;
+ const char *name;
+};
+
+static struct caps_table_struct ctrl_caps[] = {
+ { OMAPFB_CAPS_MANUAL_UPDATE, "manual update" },
+ { OMAPFB_CAPS_TEARSYNC, "tearing synchronization" },
+ { OMAPFB_CAPS_PLANE_RELOCATE_MEM, "relocate plane memory" },
+ { OMAPFB_CAPS_PLANE_SCALE, "scale plane" },
+ { OMAPFB_CAPS_WINDOW_PIXEL_DOUBLE, "pixel double window" },
+ { OMAPFB_CAPS_WINDOW_SCALE, "scale window" },
+ { OMAPFB_CAPS_WINDOW_OVERLAY, "overlay window" },
+ { OMAPFB_CAPS_SET_BACKLIGHT, "backlight setting" },
+};
+
+static struct caps_table_struct color_caps[] = {
+ { 1 << OMAPFB_COLOR_RGB565, "RGB565", },
+ { 1 << OMAPFB_COLOR_YUV422, "YUV422", },
+ { 1 << OMAPFB_COLOR_YUV420, "YUV420", },
+ { 1 << OMAPFB_COLOR_CLUT_8BPP, "CLUT8", },
+ { 1 << OMAPFB_COLOR_CLUT_4BPP, "CLUT4", },
+ { 1 << OMAPFB_COLOR_CLUT_2BPP, "CLUT2", },
+ { 1 << OMAPFB_COLOR_CLUT_1BPP, "CLUT1", },
+ { 1 << OMAPFB_COLOR_RGB444, "RGB444", },
+ { 1 << OMAPFB_COLOR_YUY422, "YUY422", },
+};
+
+/*
+ * ---------------------------------------------------------------------------
+ * LCD panel
+ * ---------------------------------------------------------------------------
+ */
+extern struct lcd_ctrl omap1_int_ctrl;
+extern struct lcd_ctrl omap2_int_ctrl;
+extern struct lcd_ctrl hwa742_ctrl;
+extern struct lcd_ctrl blizzard_ctrl;
+
+static struct lcd_ctrl *ctrls[] = {
+#ifdef CONFIG_ARCH_OMAP1
+ &omap1_int_ctrl,
+#else
+ &omap2_int_ctrl,
+#endif
+
+#ifdef CONFIG_FB_OMAP_LCDC_HWA742
+ &hwa742_ctrl,
+#endif
+#ifdef CONFIG_FB_OMAP_LCDC_BLIZZARD
+ &blizzard_ctrl,
+#endif
+};
+
+#ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
+#ifdef CONFIG_ARCH_OMAP1
+extern struct lcd_ctrl_extif omap1_ext_if;
+#else
+extern struct lcd_ctrl_extif omap2_ext_if;
+#endif
+#endif
+
+static void omapfb_rqueue_lock(struct omapfb_device *fbdev)
+{
+ mutex_lock(&fbdev->rqueue_mutex);
+}
+
+static void omapfb_rqueue_unlock(struct omapfb_device *fbdev)
+{
+ mutex_unlock(&fbdev->rqueue_mutex);
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * LCD controller and LCD DMA
+ * ---------------------------------------------------------------------------
+ */
+/* Lookup table to map elem size to elem type. */
+static const int dma_elem_type[] = {
+ 0,
+ OMAP_DMA_DATA_TYPE_S8,
+ OMAP_DMA_DATA_TYPE_S16,
+ 0,
+ OMAP_DMA_DATA_TYPE_S32,
+};
+
+/*
+ * Allocate resources needed for LCD controller and LCD DMA operations. Video
+ * memory is allocated from system memory according to the virtual display
+ * size, except if a bigger memory size is specified explicitly as a kernel
+ * parameter.
+ */
+static int ctrl_init(struct omapfb_device *fbdev)
+{
+ int r;
+ int i;
+
+ /* kernel/module vram parameters override boot tags/board config */
+ if (def_vram_cnt) {
+ for (i = 0; i < def_vram_cnt; i++)
+ fbdev->mem_desc.region[i].size =
+ PAGE_ALIGN(def_vram[i]);
+ fbdev->mem_desc.region_cnt = i;
+ } else {
+ struct omapfb_platform_data *conf;
+
+ conf = fbdev->dev->platform_data;
+ fbdev->mem_desc = conf->mem_desc;
+ }
+
+ if (!fbdev->mem_desc.region_cnt) {
+ struct lcd_panel *panel = fbdev->panel;
+ int def_size;
+ int bpp = panel->bpp;
+
+ /* 12 bpp is packed in 16 bits */
+ if (bpp == 12)
+ bpp = 16;
+ def_size = def_vxres * def_vyres * bpp / 8;
+ fbdev->mem_desc.region_cnt = 1;
+ fbdev->mem_desc.region[0].size = PAGE_ALIGN(def_size);
+ }
+ r = fbdev->ctrl->init(fbdev, 0, &fbdev->mem_desc);
+ if (r < 0) {
+ dev_err(fbdev->dev, "controller initialization failed (%d)\n",
+ r);
+ return r;
+ }
+
+#ifdef DEBUG
+ for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
+ dev_dbg(fbdev->dev, "region%d phys %08x virt %p size=%lu\n",
+ i,
+ fbdev->mem_desc.region[i].paddr,
+ fbdev->mem_desc.region[i].vaddr,
+ fbdev->mem_desc.region[i].size);
+ }
+#endif
+ return 0;
+}
+
+static void ctrl_cleanup(struct omapfb_device *fbdev)
+{
+ fbdev->ctrl->cleanup();
+}
+
+/* Must be called with fbdev->rqueue_mutex held. */
+static int ctrl_change_mode(struct fb_info *fbi)
+{
+ int r;
+ unsigned long offset;
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct fb_var_screeninfo *var = &fbi->var;
+
+ offset = var->yoffset * fbi->fix.line_length +
+ var->xoffset * var->bits_per_pixel / 8;
+
+ if (fbdev->ctrl->sync)
+ fbdev->ctrl->sync();
+ r = fbdev->ctrl->setup_plane(plane->idx, plane->info.channel_out,
+ offset, var->xres_virtual,
+ plane->info.pos_x, plane->info.pos_y,
+ var->xres, var->yres, plane->color_mode);
+ if (fbdev->ctrl->set_scale != NULL)
+ r = fbdev->ctrl->set_scale(plane->idx,
+ var->xres, var->yres,
+ plane->info.out_width,
+ plane->info.out_height);
+
+ return r;
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * fbdev framework callbacks and the ioctl interface
+ * ---------------------------------------------------------------------------
+ */
+/* Called each time the omapfb device is opened */
+static int omapfb_open(struct fb_info *info, int user)
+{
+ return 0;
+}
+
+static void omapfb_sync(struct fb_info *info);
+
+/* Called when the omapfb device is closed. We make sure that any pending
+ * gfx DMA operations are ended, before we return. */
+static int omapfb_release(struct fb_info *info, int user)
+{
+ omapfb_sync(info);
+ return 0;
+}
+
+/* Store a single color palette entry into a pseudo palette or the hardware
+ * palette if one is available. For now we support only 16bpp and thus store
+ * the entry only to the pseudo palette.
+ */
+static int _setcolreg(struct fb_info *info, u_int regno, u_int red, u_int green,
+ u_int blue, u_int transp, int update_hw_pal)
+{
+ struct omapfb_plane_struct *plane = info->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct fb_var_screeninfo *var = &info->var;
+ int r = 0;
+
+ switch (plane->color_mode) {
+ case OMAPFB_COLOR_YUV422:
+ case OMAPFB_COLOR_YUV420:
+ case OMAPFB_COLOR_YUY422:
+ r = -EINVAL;
+ break;
+ case OMAPFB_COLOR_CLUT_8BPP:
+ case OMAPFB_COLOR_CLUT_4BPP:
+ case OMAPFB_COLOR_CLUT_2BPP:
+ case OMAPFB_COLOR_CLUT_1BPP:
+ if (fbdev->ctrl->setcolreg)
+ r = fbdev->ctrl->setcolreg(regno, red, green, blue,
+ transp, update_hw_pal);
+ /* Fallthrough */
+ case OMAPFB_COLOR_RGB565:
+ case OMAPFB_COLOR_RGB444:
+ if (r != 0)
+ break;
+
+ if (regno < 0) {
+ r = -EINVAL;
+ break;
+ }
+
+ if (regno < 16) {
+ u16 pal;
+ pal = ((red >> (16 - var->red.length)) <<
+ var->red.offset) |
+ ((green >> (16 - var->green.length)) <<
+ var->green.offset) |
+ (blue >> (16 - var->blue.length));
+ ((u32 *)(info->pseudo_palette))[regno] = pal;
+ }
+ break;
+ default:
+ BUG();
+ }
+ return r;
+}
+
+static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+ u_int transp, struct fb_info *info)
+{
+ return _setcolreg(info, regno, red, green, blue, transp, 1);
+}
+
+static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
+{
+ int count, index, r;
+ u16 *red, *green, *blue, *transp;
+ u16 trans = 0xffff;
+
+ red = cmap->red;
+ green = cmap->green;
+ blue = cmap->blue;
+ transp = cmap->transp;
+ index = cmap->start;
+
+ for (count = 0; count < cmap->len; count++) {
+ if (transp)
+ trans = *transp++;
+ r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
+ count == cmap->len - 1);
+ if (r != 0)
+ return r;
+ }
+
+ return 0;
+}
+
+static int omapfb_update_full_screen(struct fb_info *fbi);
+
+static int omapfb_blank(int blank, struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int do_update = 0;
+ int r = 0;
+
+ omapfb_rqueue_lock(fbdev);
+ switch (blank) {
+ case VESA_NO_BLANKING:
+ if (fbdev->state == OMAPFB_SUSPENDED) {
+ if (fbdev->ctrl->resume)
+ fbdev->ctrl->resume();
+ fbdev->panel->enable(fbdev->panel);
+ fbdev->state = OMAPFB_ACTIVE;
+ if (fbdev->ctrl->get_update_mode() ==
+ OMAPFB_MANUAL_UPDATE)
+ do_update = 1;
+ }
+ break;
+ case VESA_POWERDOWN:
+ if (fbdev->state == OMAPFB_ACTIVE) {
+ fbdev->panel->disable(fbdev->panel);
+ if (fbdev->ctrl->suspend)
+ fbdev->ctrl->suspend();
+ fbdev->state = OMAPFB_SUSPENDED;
+ }
+ break;
+ default:
+ r = -EINVAL;
+ }
+ omapfb_rqueue_unlock(fbdev);
+
+ if (r == 0 && do_update)
+ r = omapfb_update_full_screen(fbi);
+
+ return r;
+}
+
+static void omapfb_sync(struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+
+ omapfb_rqueue_lock(fbdev);
+ if (fbdev->ctrl->sync)
+ fbdev->ctrl->sync();
+ omapfb_rqueue_unlock(fbdev);
+}
+
+/*
+ * Set fb_info.fix fields and also updates fbdev.
+ * When calling this fb_info.var must be set up already.
+ */
+static void set_fb_fix(struct fb_info *fbi)
+{
+ struct fb_fix_screeninfo *fix = &fbi->fix;
+ struct fb_var_screeninfo *var = &fbi->var;
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_mem_region *rg;
+ int bpp;
+
+ rg = &plane->fbdev->mem_desc.region[plane->idx];
+ fbi->screen_base = (char __iomem *)rg->vaddr;
+ fix->smem_start = rg->paddr;
+ fix->smem_len = rg->size;
+
+ fix->type = FB_TYPE_PACKED_PIXELS;
+ bpp = var->bits_per_pixel;
+ if (var->nonstd)
+ fix->visual = FB_VISUAL_PSEUDOCOLOR;
+ else switch (var->bits_per_pixel) {
+ case 16:
+ case 12:
+ fix->visual = FB_VISUAL_TRUECOLOR;
+ /* 12bpp is stored in 16 bits */
+ bpp = 16;
+ break;
+ case 1:
+ case 2:
+ case 4:
+ case 8:
+ fix->visual = FB_VISUAL_PSEUDOCOLOR;
+ break;
+ }
+ fix->accel = FB_ACCEL_OMAP1610;
+ fix->line_length = var->xres_virtual * bpp / 8;
+}
+
+static int set_color_mode(struct omapfb_plane_struct *plane,
+ struct fb_var_screeninfo *var)
+{
+ switch (var->nonstd) {
+ case 0:
+ break;
+ case OMAPFB_COLOR_YUV422:
+ var->bits_per_pixel = 16;
+ plane->color_mode = var->nonstd;
+ return 0;
+ case OMAPFB_COLOR_YUV420:
+ var->bits_per_pixel = 12;
+ plane->color_mode = var->nonstd;
+ return 0;
+ case OMAPFB_COLOR_YUY422:
+ var->bits_per_pixel = 16;
+ plane->color_mode = var->nonstd;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+
+ switch (var->bits_per_pixel) {
+ case 1:
+ plane->color_mode = OMAPFB_COLOR_CLUT_1BPP;
+ return 0;
+ case 2:
+ plane->color_mode = OMAPFB_COLOR_CLUT_2BPP;
+ return 0;
+ case 4:
+ plane->color_mode = OMAPFB_COLOR_CLUT_4BPP;
+ return 0;
+ case 8:
+ plane->color_mode = OMAPFB_COLOR_CLUT_8BPP;
+ return 0;
+ case 12:
+ var->bits_per_pixel = 16;
+ plane->color_mode = OMAPFB_COLOR_RGB444;
+ return 0;
+ case 16:
+ plane->color_mode = OMAPFB_COLOR_RGB565;
+ return 0;
+ default:
+ return -EINVAL;
+ }
+}
+
+/*
+ * Check the values in var against our capabilities and in case of out of
+ * bound values try to adjust them.
+ */
+static int set_fb_var(struct fb_info *fbi,
+ struct fb_var_screeninfo *var)
+{
+ int bpp;
+ unsigned long max_frame_size;
+ unsigned long line_size;
+ int xres_min, xres_max;
+ int yres_min, yres_max;
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct lcd_panel *panel = fbdev->panel;
+
+ if (set_color_mode(plane, var) < 0)
+ return -EINVAL;
+
+ bpp = var->bits_per_pixel;
+ if (plane->color_mode == OMAPFB_COLOR_RGB444)
+ bpp = 16;
+
+ switch (var->rotate) {
+ case 0:
+ case 180:
+ xres_min = OMAPFB_PLANE_XRES_MIN;
+ xres_max = panel->x_res;
+ yres_min = OMAPFB_PLANE_YRES_MIN;
+ yres_max = panel->y_res;
+ if (cpu_is_omap15xx()) {
+ var->xres = panel->x_res;
+ var->yres = panel->y_res;
+ }
+ break;
+ case 90:
+ case 270:
+ xres_min = OMAPFB_PLANE_YRES_MIN;
+ xres_max = panel->y_res;
+ yres_min = OMAPFB_PLANE_XRES_MIN;
+ yres_max = panel->x_res;
+ if (cpu_is_omap15xx()) {
+ var->xres = panel->y_res;
+ var->yres = panel->x_res;
+ }
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (var->xres < xres_min)
+ var->xres = xres_min;
+ if (var->yres < yres_min)
+ var->yres = yres_min;
+ if (var->xres > xres_max)
+ var->xres = xres_max;
+ if (var->yres > yres_max)
+ var->yres = yres_max;
+
+ if (var->xres_virtual < var->xres)
+ var->xres_virtual = var->xres;
+ if (var->yres_virtual < var->yres)
+ var->yres_virtual = var->yres;
+ max_frame_size = fbdev->mem_desc.region[plane->idx].size;
+ line_size = var->xres_virtual * bpp / 8;
+ if (line_size * var->yres_virtual > max_frame_size) {
+ /* Try to keep yres_virtual first */
+ line_size = max_frame_size / var->yres_virtual;
+ var->xres_virtual = line_size * 8 / bpp;
+ if (var->xres_virtual < var->xres) {
+ /* Still doesn't fit. Shrink yres_virtual too */
+ var->xres_virtual = var->xres;
+ line_size = var->xres * bpp / 8;
+ var->yres_virtual = max_frame_size / line_size;
+ }
+ /* Recheck this, as the virtual size changed. */
+ if (var->xres_virtual < var->xres)
+ var->xres = var->xres_virtual;
+ if (var->yres_virtual < var->yres)
+ var->yres = var->yres_virtual;
+ if (var->xres < xres_min || var->yres < yres_min)
+ return -EINVAL;
+ }
+ if (var->xres + var->xoffset > var->xres_virtual)
+ var->xoffset = var->xres_virtual - var->xres;
+ if (var->yres + var->yoffset > var->yres_virtual)
+ var->yoffset = var->yres_virtual - var->yres;
+ line_size = var->xres * bpp / 8;
+
+ if (plane->color_mode == OMAPFB_COLOR_RGB444) {
+ var->red.offset = 8; var->red.length = 4;
+ var->red.msb_right = 0;
+ var->green.offset = 4; var->green.length = 4;
+ var->green.msb_right = 0;
+ var->blue.offset = 0; var->blue.length = 4;
+ var->blue.msb_right = 0;
+ } else {
+ var->red.offset = 11; var->red.length = 5;
+ var->red.msb_right = 0;
+ var->green.offset = 5; var->green.length = 6;
+ var->green.msb_right = 0;
+ var->blue.offset = 0; var->blue.length = 5;
+ var->blue.msb_right = 0;
+ }
+
+ var->height = -1;
+ var->width = -1;
+ var->grayscale = 0;
+
+ /* pixclock in ps, the rest in pixclock */
+ var->pixclock = 10000000 / (panel->pixel_clock / 100);
+ var->left_margin = panel->hfp;
+ var->right_margin = panel->hbp;
+ var->upper_margin = panel->vfp;
+ var->lower_margin = panel->vbp;
+ var->hsync_len = panel->hsw;
+ var->vsync_len = panel->vsw;
+
+ /* TODO: get these from panel->config */
+ var->vmode = FB_VMODE_NONINTERLACED;
+ var->sync = 0;
+
+ return 0;
+}
+
+
+/* Set rotation (0, 90, 180, 270 degree), and switch to the new mode. */
+static void omapfb_rotate(struct fb_info *fbi, int rotate)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+
+ omapfb_rqueue_lock(fbdev);
+ if (cpu_is_omap15xx() && rotate != fbi->var.rotate) {
+ struct fb_var_screeninfo *new_var = &fbdev->new_var;
+
+ memcpy(new_var, &fbi->var, sizeof(*new_var));
+ new_var->rotate = rotate;
+ if (set_fb_var(fbi, new_var) == 0 &&
+ memcmp(new_var, &fbi->var, sizeof(*new_var))) {
+ memcpy(&fbi->var, new_var, sizeof(*new_var));
+ ctrl_change_mode(fbi);
+ }
+ }
+ omapfb_rqueue_unlock(fbdev);
+}
+
+/*
+ * Set new x,y offsets in the virtual display for the visible area and switch
+ * to the new mode.
+ */
+static int omapfb_pan_display(struct fb_var_screeninfo *var,
+ struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int r = 0;
+
+ omapfb_rqueue_lock(fbdev);
+ if (var->xoffset != fbi->var.xoffset ||
+ var->yoffset != fbi->var.yoffset) {
+ struct fb_var_screeninfo *new_var = &fbdev->new_var;
+
+ memcpy(new_var, &fbi->var, sizeof(*new_var));
+ new_var->xoffset = var->xoffset;
+ new_var->yoffset = var->yoffset;
+ if (set_fb_var(fbi, new_var))
+ r = -EINVAL;
+ else {
+ memcpy(&fbi->var, new_var, sizeof(*new_var));
+ ctrl_change_mode(fbi);
+ }
+ }
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+/* Set mirror to vertical axis and switch to the new mode. */
+static int omapfb_mirror(struct fb_info *fbi, int mirror)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int r = 0;
+
+ omapfb_rqueue_lock(fbdev);
+ mirror = mirror ? 1 : 0;
+ if (cpu_is_omap15xx())
+ r = -EINVAL;
+ else if (mirror != plane->info.mirror) {
+ plane->info.mirror = mirror;
+ r = ctrl_change_mode(fbi);
+ }
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+/*
+ * Check values in var, try to adjust them in case of out of bound values if
+ * possible, or return error.
+ */
+static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int r;
+
+ omapfb_rqueue_lock(fbdev);
+ if (fbdev->ctrl->sync != NULL)
+ fbdev->ctrl->sync();
+ r = set_fb_var(fbi, var);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+/*
+ * Switch to a new mode. The parameters for it has been check already by
+ * omapfb_check_var.
+ */
+static int omapfb_set_par(struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int r = 0;
+
+ omapfb_rqueue_lock(fbdev);
+ set_fb_fix(fbi);
+ r = ctrl_change_mode(fbi);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+int omapfb_update_window_async(struct fb_info *fbi,
+ struct omapfb_update_window *win,
+ void (*callback)(void *),
+ void *callback_data)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct fb_var_screeninfo *var;
+
+ var = &fbi->var;
+ if (win->x >= var->xres || win->y >= var->yres ||
+ win->out_x > var->xres || win->out_y >= var->yres)
+ return -EINVAL;
+
+ if (!fbdev->ctrl->update_window ||
+ fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
+ return -ENODEV;
+
+ if (win->x + win->width >= var->xres)
+ win->width = var->xres - win->x;
+ if (win->y + win->height >= var->yres)
+ win->height = var->yres - win->y;
+ /* The out sizes should be cropped to the LCD size */
+ if (win->out_x + win->out_width > fbdev->panel->x_res)
+ win->out_width = fbdev->panel->x_res - win->out_x;
+ if (win->out_y + win->out_height > fbdev->panel->y_res)
+ win->out_height = fbdev->panel->y_res - win->out_y;
+ if (!win->width || !win->height || !win->out_width || !win->out_height)
+ return 0;
+
+ return fbdev->ctrl->update_window(fbi, win, callback, callback_data);
+}
+EXPORT_SYMBOL(omapfb_update_window_async);
+
+static int omapfb_update_win(struct fb_info *fbi,
+ struct omapfb_update_window *win)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ int ret;
+
+ omapfb_rqueue_lock(plane->fbdev);
+ ret = omapfb_update_window_async(fbi, win, NULL, 0);
+ omapfb_rqueue_unlock(plane->fbdev);
+
+ return ret;
+}
+
+static int omapfb_update_full_screen(struct fb_info *fbi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct omapfb_update_window win;
+ int r;
+
+ if (!fbdev->ctrl->update_window ||
+ fbdev->ctrl->get_update_mode() != OMAPFB_MANUAL_UPDATE)
+ return -ENODEV;
+
+ win.x = 0;
+ win.y = 0;
+ win.width = fbi->var.xres;
+ win.height = fbi->var.yres;
+ win.out_x = 0;
+ win.out_y = 0;
+ win.out_width = fbi->var.xres;
+ win.out_height = fbi->var.yres;
+ win.format = 0;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->update_window(fbi, &win, NULL, 0);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static int omapfb_setup_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct lcd_panel *panel = fbdev->panel;
+ struct omapfb_plane_info old_info;
+ int r = 0;
+
+ if (pi->pos_x + pi->out_width > panel->x_res ||
+ pi->pos_y + pi->out_height > panel->y_res)
+ return -EINVAL;
+
+ omapfb_rqueue_lock(fbdev);
+ if (pi->enabled && !fbdev->mem_desc.region[plane->idx].size) {
+ /*
+ * This plane's memory was freed, can't enable it
+ * until it's reallocated.
+ */
+ r = -EINVAL;
+ goto out;
+ }
+ old_info = plane->info;
+ plane->info = *pi;
+ if (pi->enabled) {
+ r = ctrl_change_mode(fbi);
+ if (r < 0) {
+ plane->info = old_info;
+ goto out;
+ }
+ }
+ r = fbdev->ctrl->enable_plane(plane->idx, pi->enabled);
+ if (r < 0) {
+ plane->info = old_info;
+ goto out;
+ }
+out:
+ omapfb_rqueue_unlock(fbdev);
+ return r;
+}
+
+static int omapfb_query_plane(struct fb_info *fbi, struct omapfb_plane_info *pi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+
+ *pi = plane->info;
+ return 0;
+}
+
+static int omapfb_setup_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct omapfb_mem_region *rg = &fbdev->mem_desc.region[plane->idx];
+ size_t size;
+ int r = 0;
+
+ if (fbdev->ctrl->setup_mem == NULL)
+ return -ENODEV;
+ if (mi->type > OMAPFB_MEMTYPE_MAX)
+ return -EINVAL;
+
+ size = PAGE_ALIGN(mi->size);
+ omapfb_rqueue_lock(fbdev);
+ if (plane->info.enabled) {
+ r = -EBUSY;
+ goto out;
+ }
+ if (rg->size != size || rg->type != mi->type) {
+ struct fb_var_screeninfo *new_var = &fbdev->new_var;
+ unsigned long old_size = rg->size;
+ u8 old_type = rg->type;
+ unsigned long paddr;
+
+ rg->size = size;
+ rg->type = mi->type;
+ /*
+ * size == 0 is a special case, for which we
+ * don't check / adjust the screen parameters.
+ * This isn't a problem since the plane can't
+ * be reenabled unless its size is > 0.
+ */
+ if (old_size != size && size) {
+ if (size) {
+ memcpy(new_var, &fbi->var, sizeof(*new_var));
+ r = set_fb_var(fbi, new_var);
+ if (r < 0)
+ goto out;
+ }
+ }
+
+ if (fbdev->ctrl->sync)
+ fbdev->ctrl->sync();
+ r = fbdev->ctrl->setup_mem(plane->idx, size, mi->type, &paddr);
+ if (r < 0) {
+ /* Revert changes. */
+ rg->size = old_size;
+ rg->type = old_type;
+ goto out;
+ }
+ rg->paddr = paddr;
+
+ if (old_size != size) {
+ if (size) {
+ memcpy(&fbi->var, new_var, sizeof(fbi->var));
+ set_fb_fix(fbi);
+ } else {
+ /*
+ * Set these explicitly to indicate that the
+ * plane memory is dealloce'd, the other
+ * screen parameters in var / fix are invalid.
+ */
+ fbi->fix.smem_start = 0;
+ fbi->fix.smem_len = 0;
+ }
+ }
+ }
+out:
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static int omapfb_query_mem(struct fb_info *fbi, struct omapfb_mem_info *mi)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct omapfb_mem_region *rg;
+
+ rg = &fbdev->mem_desc.region[plane->idx];
+ memset(mi, 0, sizeof(*mi));
+ mi->size = rg->size;
+ mi->type = rg->type;
+
+ return 0;
+}
+
+static int omapfb_set_color_key(struct omapfb_device *fbdev,
+ struct omapfb_color_key *ck)
+{
+ int r;
+
+ if (!fbdev->ctrl->set_color_key)
+ return -ENODEV;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->set_color_key(ck);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static int omapfb_get_color_key(struct omapfb_device *fbdev,
+ struct omapfb_color_key *ck)
+{
+ int r;
+
+ if (!fbdev->ctrl->get_color_key)
+ return -ENODEV;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->get_color_key(ck);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static struct blocking_notifier_head omapfb_client_list[OMAPFB_PLANE_NUM];
+static int notifier_inited;
+
+static void omapfb_init_notifier(void)
+{
+ int i;
+
+ for (i = 0; i < OMAPFB_PLANE_NUM; i++)
+ BLOCKING_INIT_NOTIFIER_HEAD(&omapfb_client_list[i]);
+}
+
+int omapfb_register_client(struct omapfb_notifier_block *omapfb_nb,
+ omapfb_notifier_callback_t callback,
+ void *callback_data)
+{
+ int r;
+
+ if ((unsigned)omapfb_nb->plane_idx > OMAPFB_PLANE_NUM)
+ return -EINVAL;
+
+ if (!notifier_inited) {
+ omapfb_init_notifier();
+ notifier_inited = 1;
+ }
+
+ omapfb_nb->nb.notifier_call = (int (*)(struct notifier_block *,
+ unsigned long, void *))callback;
+ omapfb_nb->data = callback_data;
+ r = blocking_notifier_chain_register(
+ &omapfb_client_list[omapfb_nb->plane_idx],
+ &omapfb_nb->nb);
+ if (r)
+ return r;
+ if (omapfb_dev != NULL &&
+ omapfb_dev->ctrl && omapfb_dev->ctrl->bind_client) {
+ omapfb_dev->ctrl->bind_client(omapfb_nb);
+ }
+
+ return 0;
+}
+EXPORT_SYMBOL(omapfb_register_client);
+
+int omapfb_unregister_client(struct omapfb_notifier_block *omapfb_nb)
+{
+ return blocking_notifier_chain_unregister(
+ &omapfb_client_list[omapfb_nb->plane_idx], &omapfb_nb->nb);
+}
+EXPORT_SYMBOL(omapfb_unregister_client);
+
+void omapfb_notify_clients(struct omapfb_device *fbdev, unsigned long event)
+{
+ int i;
+
+ if (!notifier_inited)
+ /* no client registered yet */
+ return;
+
+ for (i = 0; i < OMAPFB_PLANE_NUM; i++)
+ blocking_notifier_call_chain(&omapfb_client_list[i], event,
+ fbdev->fb_info[i]);
+}
+EXPORT_SYMBOL(omapfb_notify_clients);
+
+static int omapfb_set_update_mode(struct omapfb_device *fbdev,
+ enum omapfb_update_mode mode)
+{
+ int r;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->set_update_mode(mode);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static enum omapfb_update_mode omapfb_get_update_mode(struct omapfb_device *fbdev)
+{
+ int r;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->get_update_mode();
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+static void omapfb_get_caps(struct omapfb_device *fbdev, int plane,
+ struct omapfb_caps *caps)
+{
+ memset(caps, 0, sizeof(*caps));
+ fbdev->ctrl->get_caps(plane, caps);
+ caps->ctrl |= fbdev->panel->get_caps(fbdev->panel);
+}
+
+/* For lcd testing */
+void omapfb_write_first_pixel(struct omapfb_device *fbdev, u16 pixval)
+{
+ omapfb_rqueue_lock(fbdev);
+ *(u16 *)fbdev->mem_desc.region[0].vaddr = pixval;
+ if (fbdev->ctrl->get_update_mode() == OMAPFB_MANUAL_UPDATE) {
+ struct omapfb_update_window win;
+
+ memset(&win, 0, sizeof(win));
+ win.width = 2;
+ win.height = 2;
+ win.out_width = 2;
+ win.out_height = 2;
+ fbdev->ctrl->update_window(fbdev->fb_info[0], &win, NULL, 0);
+ }
+ omapfb_rqueue_unlock(fbdev);
+}
+EXPORT_SYMBOL(omapfb_write_first_pixel);
+
+/*
+ * Ioctl interface. Part of the kernel mode frame buffer API is duplicated
+ * here to be accessible by user mode code.
+ */
+static int omapfb_ioctl(struct fb_info *fbi, unsigned int cmd,
+ unsigned long arg)
+{
+ struct omapfb_plane_struct *plane = fbi->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ struct fb_ops *ops = fbi->fbops;
+ union {
+ struct omapfb_update_window update_window;
+ struct omapfb_plane_info plane_info;
+ struct omapfb_mem_info mem_info;
+ struct omapfb_color_key color_key;
+ enum omapfb_update_mode update_mode;
+ struct omapfb_caps caps;
+ unsigned int mirror;
+ int plane_out;
+ int enable_plane;
+ } p;
+ int r = 0;
+
+ BUG_ON(!ops);
+ switch (cmd) {
+ case OMAPFB_MIRROR:
+ if (get_user(p.mirror, (int __user *)arg))
+ r = -EFAULT;
+ else
+ omapfb_mirror(fbi, p.mirror);
+ break;
+ case OMAPFB_SYNC_GFX:
+ omapfb_sync(fbi);
+ break;
+ case OMAPFB_VSYNC:
+ break;
+ case OMAPFB_SET_UPDATE_MODE:
+ if (get_user(p.update_mode, (int __user *)arg))
+ r = -EFAULT;
+ else
+ r = omapfb_set_update_mode(fbdev, p.update_mode);
+ break;
+ case OMAPFB_GET_UPDATE_MODE:
+ p.update_mode = omapfb_get_update_mode(fbdev);
+ if (put_user(p.update_mode,
+ (enum omapfb_update_mode __user *)arg))
+ r = -EFAULT;
+ break;
+ case OMAPFB_UPDATE_WINDOW_OLD:
+ if (copy_from_user(&p.update_window, (void __user *)arg,
+ sizeof(struct omapfb_update_window_old)))
+ r = -EFAULT;
+ else {
+ struct omapfb_update_window *u = &p.update_window;
+ u->out_x = u->x;
+ u->out_y = u->y;
+ u->out_width = u->width;
+ u->out_height = u->height;
+ memset(u->reserved, 0, sizeof(u->reserved));
+ r = omapfb_update_win(fbi, u);
+ }
+ break;
+ case OMAPFB_UPDATE_WINDOW:
+ if (copy_from_user(&p.update_window, (void __user *)arg,
+ sizeof(p.update_window)))
+ r = -EFAULT;
+ else
+ r = omapfb_update_win(fbi, &p.update_window);
+ break;
+ case OMAPFB_SETUP_PLANE:
+ if (copy_from_user(&p.plane_info, (void __user *)arg,
+ sizeof(p.plane_info)))
+ r = -EFAULT;
+ else
+ r = omapfb_setup_plane(fbi, &p.plane_info);
+ break;
+ case OMAPFB_QUERY_PLANE:
+ if ((r = omapfb_query_plane(fbi, &p.plane_info)) < 0)
+ break;
+ if (copy_to_user((void __user *)arg, &p.plane_info,
+ sizeof(p.plane_info)))
+ r = -EFAULT;
+ break;
+ case OMAPFB_SETUP_MEM:
+ if (copy_from_user(&p.mem_info, (void __user *)arg,
+ sizeof(p.mem_info)))
+ r = -EFAULT;
+ else
+ r = omapfb_setup_mem(fbi, &p.mem_info);
+ break;
+ case OMAPFB_QUERY_MEM:
+ if ((r = omapfb_query_mem(fbi, &p.mem_info)) < 0)
+ break;
+ if (copy_to_user((void __user *)arg, &p.mem_info,
+ sizeof(p.mem_info)))
+ r = -EFAULT;
+ break;
+ case OMAPFB_SET_COLOR_KEY:
+ if (copy_from_user(&p.color_key, (void __user *)arg,
+ sizeof(p.color_key)))
+ r = -EFAULT;
+ else
+ r = omapfb_set_color_key(fbdev, &p.color_key);
+ break;
+ case OMAPFB_GET_COLOR_KEY:
+ if ((r = omapfb_get_color_key(fbdev, &p.color_key)) < 0)
+ break;
+ if (copy_to_user((void __user *)arg, &p.color_key,
+ sizeof(p.color_key)))
+ r = -EFAULT;
+ break;
+ case OMAPFB_GET_CAPS:
+ omapfb_get_caps(fbdev, plane->idx, &p.caps);
+ if (copy_to_user((void __user *)arg, &p.caps, sizeof(p.caps)))
+ r = -EFAULT;
+ break;
+ case OMAPFB_LCD_TEST:
+ {
+ int test_num;
+
+ if (get_user(test_num, (int __user *)arg)) {
+ r = -EFAULT;
+ break;
+ }
+ if (!fbdev->panel->run_test) {
+ r = -EINVAL;
+ break;
+ }
+ r = fbdev->panel->run_test(fbdev->panel, test_num);
+ break;
+ }
+ case OMAPFB_CTRL_TEST:
+ {
+ int test_num;
+
+ if (get_user(test_num, (int __user *)arg)) {
+ r = -EFAULT;
+ break;
+ }
+ if (!fbdev->ctrl->run_test) {
+ r = -EINVAL;
+ break;
+ }
+ r = fbdev->ctrl->run_test(test_num);
+ break;
+ }
+ default:
+ r = -EINVAL;
+ }
+
+ return r;
+}
+
+static int omapfb_mmap(struct fb_info *info, struct vm_area_struct *vma)
+{
+ struct omapfb_plane_struct *plane = info->par;
+ struct omapfb_device *fbdev = plane->fbdev;
+ int r;
+
+ omapfb_rqueue_lock(fbdev);
+ r = fbdev->ctrl->mmap(info, vma);
+ omapfb_rqueue_unlock(fbdev);
+
+ return r;
+}
+
+/*
+ * Callback table for the frame buffer framework. Some of these pointers
+ * will be changed according to the current setting of fb_info->accel_flags.
+ */
+static struct fb_ops omapfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_open = omapfb_open,
+ .fb_release = omapfb_release,
+ .fb_setcolreg = omapfb_setcolreg,
+ .fb_setcmap = omapfb_setcmap,
+ .fb_fillrect = cfb_fillrect,
+ .fb_copyarea = cfb_copyarea,
+ .fb_imageblit = cfb_imageblit,
+ .fb_blank = omapfb_blank,
+ .fb_ioctl = omapfb_ioctl,
+ .fb_check_var = omapfb_check_var,
+ .fb_set_par = omapfb_set_par,
+ .fb_rotate = omapfb_rotate,
+ .fb_pan_display = omapfb_pan_display,
+};
+
+/*
+ * ---------------------------------------------------------------------------
+ * Sysfs interface
+ * ---------------------------------------------------------------------------
+ */
+/* omapfbX sysfs entries */
+static ssize_t omapfb_show_caps_num(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+ int plane;
+ size_t size;
+ struct omapfb_caps caps;
+
+ plane = 0;
+ size = 0;
+ while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
+ omapfb_get_caps(fbdev, plane, &caps);
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ "plane#%d %#010x %#010x %#010x\n",
+ plane, caps.ctrl, caps.plane_color, caps.wnd_color);
+ plane++;
+ }
+ return size;
+}
+
+static ssize_t omapfb_show_caps_text(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+ int i;
+ struct omapfb_caps caps;
+ int plane;
+ size_t size;
+
+ plane = 0;
+ size = 0;
+ while (size < PAGE_SIZE && plane < OMAPFB_PLANE_NUM) {
+ omapfb_get_caps(fbdev, plane, &caps);
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ "plane#%d:\n", plane);
+ for (i = 0; i < ARRAY_SIZE(ctrl_caps) &&
+ size < PAGE_SIZE; i++) {
+ if (ctrl_caps[i].flag & caps.ctrl)
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ " %s\n", ctrl_caps[i].name);
+ }
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ " plane colors:\n");
+ for (i = 0; i < ARRAY_SIZE(color_caps) &&
+ size < PAGE_SIZE; i++) {
+ if (color_caps[i].flag & caps.plane_color)
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ " %s\n", color_caps[i].name);
+ }
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ " window colors:\n");
+ for (i = 0; i < ARRAY_SIZE(color_caps) &&
+ size < PAGE_SIZE; i++) {
+ if (color_caps[i].flag & caps.wnd_color)
+ size += snprintf(&buf[size], PAGE_SIZE - size,
+ " %s\n", color_caps[i].name);
+ }
+
+ plane++;
+ }
+ return size;
+}
+
+static DEVICE_ATTR(caps_num, 0444, omapfb_show_caps_num, NULL);
+static DEVICE_ATTR(caps_text, 0444, omapfb_show_caps_text, NULL);
+
+/* panel sysfs entries */
+static ssize_t omapfb_show_panel_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->panel->name);
+}
+
+static ssize_t omapfb_show_bklight_level(struct device *dev,
+ struct device_attribute *attr,
+ char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+ int r;
+
+ if (fbdev->panel->get_bklight_level) {
+ r = snprintf(buf, PAGE_SIZE, "%d\n",
+ fbdev->panel->get_bklight_level(fbdev->panel));
+ } else
+ r = -ENODEV;
+ return r;
+}
+
+static ssize_t omapfb_store_bklight_level(struct device *dev,
+ struct device_attribute *attr,
+ const char *buf, size_t size)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+ int r;
+
+ if (fbdev->panel->set_bklight_level) {
+ unsigned int level;
+
+ if (sscanf(buf, "%10d", &level) == 1) {
+ r = fbdev->panel->set_bklight_level(fbdev->panel,
+ level);
+ } else
+ r = -EINVAL;
+ } else
+ r = -ENODEV;
+ return r ? r : size;
+}
+
+static ssize_t omapfb_show_bklight_max(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+ int r;
+
+ if (fbdev->panel->get_bklight_level) {
+ r = snprintf(buf, PAGE_SIZE, "%d\n",
+ fbdev->panel->get_bklight_max(fbdev->panel));
+ } else
+ r = -ENODEV;
+ return r;
+}
+
+static struct device_attribute dev_attr_panel_name =
+ __ATTR(name, 0444, omapfb_show_panel_name, NULL);
+static DEVICE_ATTR(backlight_level, 0664,
+ omapfb_show_bklight_level, omapfb_store_bklight_level);
+static DEVICE_ATTR(backlight_max, 0444, omapfb_show_bklight_max, NULL);
+
+static struct attribute *panel_attrs[] = {
+ &dev_attr_panel_name.attr,
+ &dev_attr_backlight_level.attr,
+ &dev_attr_backlight_max.attr,
+ NULL,
+};
+
+static struct attribute_group panel_attr_grp = {
+ .name = "panel",
+ .attrs = panel_attrs,
+};
+
+/* ctrl sysfs entries */
+static ssize_t omapfb_show_ctrl_name(struct device *dev,
+ struct device_attribute *attr, char *buf)
+{
+ struct omapfb_device *fbdev = (struct omapfb_device *)dev->driver_data;
+
+ return snprintf(buf, PAGE_SIZE, "%s\n", fbdev->ctrl->name);
+}
+
+static struct device_attribute dev_attr_ctrl_name =
+ __ATTR(name, 0444, omapfb_show_ctrl_name, NULL);
+
+static struct attribute *ctrl_attrs[] = {
+ &dev_attr_ctrl_name.attr,
+ NULL,
+};
+
+static struct attribute_group ctrl_attr_grp = {
+ .name = "ctrl",
+ .attrs = ctrl_attrs,
+};
+
+static int omapfb_register_sysfs(struct omapfb_device *fbdev)
+{
+ int r;
+
+ if ((r = device_create_file(fbdev->dev, &dev_attr_caps_num)))
+ goto fail0;
+
+ if ((r = device_create_file(fbdev->dev, &dev_attr_caps_text)))
+ goto fail1;
+
+ if ((r = sysfs_create_group(&fbdev->dev->kobj, &panel_attr_grp)))
+ goto fail2;
+
+ if ((r = sysfs_create_group(&fbdev->dev->kobj, &ctrl_attr_grp)))
+ goto fail3;
+
+ return 0;
+fail3:
+ sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
+fail2:
+ device_remove_file(fbdev->dev, &dev_attr_caps_text);
+fail1:
+ device_remove_file(fbdev->dev, &dev_attr_caps_num);
+fail0:
+ dev_err(fbdev->dev, "unable to register sysfs interface\n");
+ return r;
+}
+
+static void omapfb_unregister_sysfs(struct omapfb_device *fbdev)
+{
+ sysfs_remove_group(&fbdev->dev->kobj, &ctrl_attr_grp);
+ sysfs_remove_group(&fbdev->dev->kobj, &panel_attr_grp);
+ device_remove_file(fbdev->dev, &dev_attr_caps_num);
+ device_remove_file(fbdev->dev, &dev_attr_caps_text);
+}
+
+/*
+ * ---------------------------------------------------------------------------
+ * LDM callbacks
+ * ---------------------------------------------------------------------------
+ */
+/* Initialize system fb_info object and set the default video mode.
+ * The frame buffer memory already allocated by lcddma_init
+ */
+static int fbinfo_init(struct omapfb_device *fbdev, struct fb_info *info)
+{
+ struct fb_var_screeninfo *var = &info->var;
+ struct fb_fix_screeninfo *fix = &info->fix;
+ int r = 0;
+
+ info->fbops = &omapfb_ops;
+ info->flags = FBINFO_FLAG_DEFAULT;
+
+ strncpy(fix->id, MODULE_NAME, sizeof(fix->id));
+
+ info->pseudo_palette = fbdev->pseudo_palette;
+
+ var->accel_flags = def_accel ? FB_ACCELF_TEXT : 0;
+ var->xres = def_vxres;
+ var->yres = def_vyres;
+ var->xres_virtual = def_vxres;
+ var->yres_virtual = def_vyres;
+ var->rotate = def_rotate;
+ var->bits_per_pixel = fbdev->panel->bpp;
+
+ set_fb_var(info, var);
+ set_fb_fix(info);
+
+ r = fb_alloc_cmap(&info->cmap, 16, 0);
+ if (r != 0)
+ dev_err(fbdev->dev, "unable to allocate color map memory\n");
+
+ return r;
+}
+
+/* Release the fb_info object */
+static void fbinfo_cleanup(struct omapfb_device *fbdev, struct fb_info *fbi)
+{
+ fb_dealloc_cmap(&fbi->cmap);
+}
+
+static void planes_cleanup(struct omapfb_device *fbdev)
+{
+ int i;
+
+ for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
+ if (fbdev->fb_info[i] == NULL)
+ break;
+ fbinfo_cleanup(fbdev, fbdev->fb_info[i]);
+ framebuffer_release(fbdev->fb_info[i]);
+ }
+}
+
+static int planes_init(struct omapfb_device *fbdev)
+{
+ struct fb_info *fbi;
+ int i;
+ int r;
+
+ for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
+ struct omapfb_plane_struct *plane;
+ fbi = framebuffer_alloc(sizeof(struct omapfb_plane_struct),
+ fbdev->dev);
+ if (fbi == NULL) {
+ dev_err(fbdev->dev,
+ "unable to allocate memory for plane info\n");
+ planes_cleanup(fbdev);
+ return -ENOMEM;
+ }
+ plane = fbi->par;
+ plane->idx = i;
+ plane->fbdev = fbdev;
+ plane->info.mirror = def_mirror;
+ fbdev->fb_info[i] = fbi;
+
+ if ((r = fbinfo_init(fbdev, fbi)) < 0) {
+ framebuffer_release(fbi);
+ planes_cleanup(fbdev);
+ return r;
+ }
+ plane->info.out_width = fbi->var.xres;
+ plane->info.out_height = fbi->var.yres;
+ }
+ return 0;
+}
+
+/*
+ * Free driver resources. Can be called to rollback an aborted initialization
+ * sequence.
+ */
+static void omapfb_free_resources(struct omapfb_device *fbdev, int state)
+{
+ int i;
+
+ switch (state) {
+ case OMAPFB_ACTIVE:
+ for (i = 0; i < fbdev->mem_desc.region_cnt; i++)
+ unregister_framebuffer(fbdev->fb_info[i]);
+ case 7:
+ omapfb_unregister_sysfs(fbdev);
+ case 6:
+ fbdev->panel->disable(fbdev->panel);
+ case 5:
+ omapfb_set_update_mode(fbdev, OMAPFB_UPDATE_DISABLED);
+ case 4:
+ planes_cleanup(fbdev);
+ case 3:
+ ctrl_cleanup(fbdev);
+ case 2:
+ fbdev->panel->cleanup(fbdev->panel);
+ case 1:
+ dev_set_drvdata(fbdev->dev, NULL);
+ kfree(fbdev);
+ case 0:
+ /* nothing to free */
+ break;
+ default:
+ BUG();
+ }
+}
+
+static int omapfb_find_ctrl(struct omapfb_device *fbdev)
+{
+ struct omapfb_platform_data *conf;
+ char name[17];
+ int i;
+
+ conf = fbdev->dev->platform_data;
+
+ fbdev->ctrl = NULL;
+
+ strncpy(name, conf->lcd.ctrl_name, sizeof(name) - 1);
+ name[sizeof(name) - 1] = '\0';
+
+ if (strcmp(name, "internal") == 0) {
+ fbdev->ctrl = fbdev->int_ctrl;
+ return 0;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(ctrls); i++) {
+ dev_dbg(fbdev->dev, "ctrl %s\n", ctrls[i]->name);
+ if (strcmp(ctrls[i]->name, name) == 0) {
+ fbdev->ctrl = ctrls[i];
+ break;
+ }
+ }
+
+ if (fbdev->ctrl == NULL) {
+ dev_dbg(fbdev->dev, "ctrl %s not supported\n", name);
+ return -1;
+ }
+
+ return 0;
+}
+
+static void check_required_callbacks(struct omapfb_device *fbdev)
+{
+#define _C(x) (fbdev->ctrl->x != NULL)
+#define _P(x) (fbdev->panel->x != NULL)
+ BUG_ON(fbdev->ctrl == NULL || fbdev->panel == NULL);
+ BUG_ON(!(_C(init) && _C(cleanup) && _C(get_caps) &&
+ _C(set_update_mode) && _C(setup_plane) && _C(enable_plane) &&
+ _P(init) && _P(cleanup) && _P(enable) && _P(disable) &&
+ _P(get_caps)));
+#undef _P
+#undef _C
+}
+
+/*
+ * Called by LDM binding to probe and attach a new device.
+ * Initialization sequence:
+ * 1. allocate system omapfb_device structure
+ * 2. select controller type according to platform configuration
+ * init LCD panel
+ * 3. init LCD controller and LCD DMA
+ * 4. init system fb_info structure for all planes
+ * 5. setup video mode for first plane and enable it
+ * 6. enable LCD panel
+ * 7. register sysfs attributes
+ * OMAPFB_ACTIVE: register system fb_info structure for all planes
+ */
+static int omapfb_do_probe(struct platform_device *pdev,
+ struct lcd_panel *panel)
+{
+ struct omapfb_device *fbdev = NULL;
+ int init_state;
+ unsigned long phz, hhz, vhz;
+ unsigned long vram;
+ int i;
+ int r = 0;
+
+ init_state = 0;
+
+ if (pdev->num_resources != 0) {
+ dev_err(&pdev->dev, "probed for an unknown device\n");
+ r = -ENODEV;
+ goto cleanup;
+ }
+
+ if (pdev->dev.platform_data == NULL) {
+ dev_err(&pdev->dev, "missing platform data\n");
+ r = -ENOENT;
+ goto cleanup;
+ }
+
+ fbdev = kzalloc(sizeof(struct omapfb_device), GFP_KERNEL);
+ if (fbdev == NULL) {
+ dev_err(&pdev->dev,
+ "unable to allocate memory for device info\n");
+ r = -ENOMEM;
+ goto cleanup;
+ }
+ init_state++;
+
+ fbdev->dev = &pdev->dev;
+ fbdev->panel = panel;
+ platform_set_drvdata(pdev, fbdev);
+
+ mutex_init(&fbdev->rqueue_mutex);
+
+#ifdef CONFIG_ARCH_OMAP1
+ fbdev->int_ctrl = &omap1_int_ctrl;
+#ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
+ fbdev->ext_if = &omap1_ext_if;
+#endif
+#else /* OMAP2 */
+ fbdev->int_ctrl = &omap2_int_ctrl;
+#ifdef CONFIG_FB_OMAP_LCDC_EXTERNAL
+ fbdev->ext_if = &omap2_ext_if;
+#endif
+#endif
+ if (omapfb_find_ctrl(fbdev) < 0) {
+ dev_err(fbdev->dev,
+ "LCD controller not found, board not supported\n");
+ r = -ENODEV;
+ goto cleanup;
+ }
+
+ r = fbdev->panel->init(fbdev->panel, fbdev);
+ if (r)
+ goto cleanup;
+
+ pr_info("omapfb: configured for panel %s\n", fbdev->panel->name);
+
+ def_vxres = def_vxres ? : fbdev->panel->x_res;
+ def_vyres = def_vyres ? : fbdev->panel->y_res;
+
+ init_state++;
+
+ r = ctrl_init(fbdev);
+ if (r)
+ goto cleanup;
+ if (fbdev->ctrl->mmap != NULL)
+ omapfb_ops.fb_mmap = omapfb_mmap;
+ init_state++;
+
+ check_required_callbacks(fbdev);
+
+ r = planes_init(fbdev);
+ if (r)
+ goto cleanup;
+ init_state++;
+
+#ifdef CONFIG_FB_OMAP_DMA_TUNE
+ /* Set DMA priority for EMIFF access to highest */
+ if (cpu_class_is_omap1())
+ omap_set_dma_priority(0, OMAP_DMA_PORT_EMIFF, 15);
+#endif
+
+ r = ctrl_change_mode(fbdev->fb_info[0]);
+ if (r) {
+ dev_err(fbdev->dev, "mode setting failed\n");
+ goto cleanup;
+ }
+
+ /* GFX plane is enabled by default */
+ r = fbdev->ctrl->enable_plane(OMAPFB_PLANE_GFX, 1);
+ if (r)
+ goto cleanup;
+
+ omapfb_set_update_mode(fbdev, manual_update ?
+ OMAPFB_MANUAL_UPDATE : OMAPFB_AUTO_UPDATE);
+ init_state++;
+
+ r = fbdev->panel->enable(fbdev->panel);
+ if (r)
+ goto cleanup;
+ init_state++;
+
+ r = omapfb_register_sysfs(fbdev);
+ if (r)
+ goto cleanup;
+ init_state++;
+
+ vram = 0;
+ for (i = 0; i < fbdev->mem_desc.region_cnt; i++) {
+ r = register_framebuffer(fbdev->fb_info[i]);
+ if (r != 0) {
+ dev_err(fbdev->dev,
+ "registering framebuffer %d failed\n", i);
+ goto cleanup;
+ }
+ vram += fbdev->mem_desc.region[i].size;
+ }
+
+ fbdev->state = OMAPFB_ACTIVE;
+
+ panel = fbdev->panel;
+ phz = panel->pixel_clock * 1000;
+ hhz = phz * 10 / (panel->hfp + panel->x_res + panel->hbp + panel->hsw);
+ vhz = hhz / (panel->vfp + panel->y_res + panel->vbp + panel->vsw);
+
+ omapfb_dev = fbdev;
+
+ pr_info("omapfb: Framebuffer initialized. Total vram %lu planes %d\n",
+ vram, fbdev->mem_desc.region_cnt);
+ pr_info("omapfb: Pixclock %lu kHz hfreq %lu.%lu kHz "
+ "vfreq %lu.%lu Hz\n",
+ phz / 1000, hhz / 10000, hhz % 10, vhz / 10, vhz % 10);
+
+ return 0;
+
+cleanup:
+ omapfb_free_resources(fbdev, init_state);
+
+ return r;
+}
+
+static int omapfb_probe(struct platform_device *pdev)
+{
+ BUG_ON(fbdev_pdev != NULL);
+
+ /* Delay actual initialization until the LCD is registered */
+ fbdev_pdev = pdev;
+ if (fbdev_panel != NULL)
+ omapfb_do_probe(fbdev_pdev, fbdev_panel);
+ return 0;
+}
+
+void omapfb_register_panel(struct lcd_panel *panel)
+{
+ BUG_ON(fbdev_panel != NULL);
+
+ fbdev_panel = panel;
+ if (fbdev_pdev != NULL)
+ omapfb_do_probe(fbdev_pdev, fbdev_panel);
+}
+
+/* Called when the device is being detached from the driver */
+static int omapfb_remove(struct platform_device *pdev)
+{
+ struct omapfb_device *fbdev = platform_get_drvdata(pdev);
+ enum omapfb_state saved_state = fbdev->state;
+
+ /* FIXME: wait till completion of pending events */
+
+ fbdev->state = OMAPFB_DISABLED;
+ omapfb_free_resources(fbdev, saved_state);
+
+ return 0;
+}
+
+/* PM suspend */
+static int omapfb_suspend(struct platform_device *pdev, pm_message_t mesg)
+{
+ struct omapfb_device *fbdev = platform_get_drvdata(pdev);
+
+ omapfb_blank(VESA_POWERDOWN, fbdev->fb_info[0]);
+
+ return 0;
+}
+
+/* PM resume */
+static int omapfb_resume(struct platform_device *pdev)
+{
+ struct omapfb_device *fbdev = platform_get_drvdata(pdev);
+
+ omapfb_blank(VESA_NO_BLANKING, fbdev->fb_info[0]);
+ return 0;
+}
+
+static struct platform_driver omapfb_driver = {
+ .probe = omapfb_probe,
+ .remove = omapfb_remove,
+ .suspend = omapfb_suspend,
+ .resume = omapfb_resume,
+ .driver = {
+ .name = MODULE_NAME,
+ .owner = THIS_MODULE,
+ },
+};
+
+#ifndef MODULE
+
+/* Process kernel command line parameters */
+static int __init omapfb_setup(char *options)
+{
+ char *this_opt = NULL;
+ int r = 0;
+
+ pr_debug("omapfb: options %s\n", options);
+
+ if (!options || !*options)
+ return 0;
+
+ while (!r && (this_opt = strsep(&options, ",")) != NULL) {
+ if (!strncmp(this_opt, "accel", 5))
+ def_accel = 1;
+ else if (!strncmp(this_opt, "vram:", 5)) {
+ char *suffix;
+ unsigned long vram;
+ vram = (simple_strtoul(this_opt + 5, &suffix, 0));
+ switch (suffix[0]) {
+ case '\0':
+ break;
+ case 'm':
+ case 'M':
+ vram *= 1024;
+ /* Fall through */
+ case 'k':
+ case 'K':
+ vram *= 1024;
+ break;
+ default:
+ pr_debug("omapfb: invalid vram suffix %c\n",
+ suffix[0]);
+ r = -1;
+ }
+ def_vram[def_vram_cnt++] = vram;
+ }
+ else if (!strncmp(this_opt, "vxres:", 6))
+ def_vxres = simple_strtoul(this_opt + 6, NULL, 0);
+ else if (!strncmp(this_opt, "vyres:", 6))
+ def_vyres = simple_strtoul(this_opt + 6, NULL, 0);
+ else if (!strncmp(this_opt, "rotate:", 7))
+ def_rotate = (simple_strtoul(this_opt + 7, NULL, 0));
+ else if (!strncmp(this_opt, "mirror:", 7))
+ def_mirror = (simple_strtoul(this_opt + 7, NULL, 0));
+ else if (!strncmp(this_opt, "manual_update", 13))
+ manual_update = 1;
+ else {
+ pr_debug("omapfb: invalid option\n");
+ r = -1;
+ }
+ }
+
+ return r;
+}
+
+#endif
+
+/* Register both the driver and the device */
+static int __init omapfb_init(void)
+{
+#ifndef MODULE
+ char *option;
+
+ if (fb_get_options("omapfb", &option))
+ return -ENODEV;
+ omapfb_setup(option);
+#endif
+ /* Register the driver with LDM */
+ if (platform_driver_register(&omapfb_driver)) {
+ pr_debug("failed to register omapfb driver\n");
+ return -ENODEV;
+ }
+
+ return 0;
+}
+
+static void __exit omapfb_cleanup(void)
+{
+ platform_driver_unregister(&omapfb_driver);
+}
+
+module_param_named(accel, def_accel, uint, 0664);
+module_param_array_named(vram, def_vram, ulong, &def_vram_cnt, 0664);
+module_param_named(vxres, def_vxres, long, 0664);
+module_param_named(vyres, def_vyres, long, 0664);
+module_param_named(rotate, def_rotate, uint, 0664);
+module_param_named(mirror, def_mirror, uint, 0664);
+module_param_named(manual_update, manual_update, bool, 0664);
+
+module_init(omapfb_init);
+module_exit(omapfb_cleanup);
+
+MODULE_DESCRIPTION("TI OMAP framebuffer driver");
+MODULE_AUTHOR("Imre Deak <imre.deak@nokia.com>");
+MODULE_LICENSE("GPL");