aboutsummaryrefslogtreecommitdiff
path: root/drivers/video
diff options
context:
space:
mode:
Diffstat (limited to 'drivers/video')
-rw-r--r--drivers/video/s3c-fb.c208
1 files changed, 180 insertions, 28 deletions
diff --git a/drivers/video/s3c-fb.c b/drivers/video/s3c-fb.c
index f9d0170b241..e700cfd5002 100644
--- a/drivers/video/s3c-fb.c
+++ b/drivers/video/s3c-fb.c
@@ -1,7 +1,7 @@
/* linux/drivers/video/s3c-fb.c
*
* Copyright 2008 Openmoko Inc.
- * Copyright 2008 Simtec Electronics
+ * Copyright 2008-2010 Simtec Electronics
* Ben Dooks <ben@simtec.co.uk>
* http://armlinux.simtec.co.uk/
*
@@ -36,9 +36,9 @@
* output timings and as the control for the output power-down state.
*/
-/* note, some of the functions that get called are derived from including
- * <mach/regs-fb.h> as they are specific to the architecture that the code
- * is being built for.
+/* note, the previous use of <mach/regs-fb.h> to get platform specific data
+ * has been replaced by using the platform device name to pick the correct
+ * configuration data for the system.
*/
#ifdef CONFIG_FB_S3C_DEBUG_REGWRITE
@@ -50,11 +50,52 @@
struct s3c_fb;
+#define VALID_BPP(x) (1 << ((x) - 1))
+
+/**
+ * struct s3c_fb_variant - fb variant information
+ * @nr_windows: The number of windows.
+ * @palette: Address of palette memory, or 0 if none.
+ */
+struct s3c_fb_variant {
+ unsigned short nr_windows;
+ unsigned short palette[S3C_FB_MAX_WIN];
+};
+
+/**
+ * struct s3c_fb_win_variant
+ * @has_osd_c: Set if has OSD C register.
+ * @has_osd_d: Set if has OSD D register.
+ * @palette_sz: Size of palette in entries.
+ * @palette_16bpp: Set if palette is 16bits wide.
+ * @valid_bpp: 1 bit per BPP setting to show valid bits-per-pixel.
+ *
+ * valid_bpp bit x is set if (x+1)BPP is supported.
+ */
+struct s3c_fb_win_variant {
+ unsigned int has_osd_c:1;
+ unsigned int has_osd_d:1;
+ unsigned int palette_16bpp:1;
+ unsigned short palette_sz;
+ u32 valid_bpp;
+};
+
+/**
+ * struct s3c_fb_driverdata - per-device type driver data for init time.
+ * @variant: The variant information for this driver.
+ * @win: The window information for each window.
+ */
+struct s3c_fb_driverdata {
+ struct s3c_fb_variant variant;
+ struct s3c_fb_win_variant *win[S3C_FB_MAX_WIN];
+};
+
/**
* struct s3c_fb_win - per window private data for each framebuffer.
* @windata: The platform data supplied for the window configuration.
* @parent: The hardware that this window is part of.
* @fbinfo: Pointer pack to the framebuffer info for this window.
+ * @varint: The variant information for this window.
* @palette_buffer: Buffer/cache to hold palette entries.
* @pseudo_palette: For use in TRUECOLOUR modes for entries 0..15/
* @index: The window number of this window.
@@ -65,6 +106,7 @@ struct s3c_fb_win {
struct s3c_fb *parent;
struct fb_info *fbinfo;
struct s3c_fb_palette palette;
+ struct s3c_fb_win_variant variant;
u32 *palette_buffer;
u32 pseudo_palette[16];
@@ -77,6 +119,7 @@ struct s3c_fb_win {
* @regs_res: The resource we claimed for the IO registers.
* @bus_clk: The clk (hclk) feeding our interface and possibly pixclk.
* @regs: The mapped hardware registers.
+ * @variant: Variant information for this hardware.
* @enabled: A bitmask of enabled hardware windows.
* @pdata: The platform configuration data passed with the device.
* @windows: The hardware windows that have been claimed.
@@ -86,6 +129,7 @@ struct s3c_fb {
struct resource *regs_res;
struct clk *bus_clk;
void __iomem *regs;
+ struct s3c_fb_variant variant;
unsigned char enabled;
@@ -94,15 +138,13 @@ struct s3c_fb {
};
/**
- * s3c_fb_win_has_palette() - determine if a mode has a palette
- * @win: The window number being queried.
- * @bpp: The number of bits per pixel to test.
- *
- * Work out if the given window supports palletised data at the specified bpp.
+ * s3c_fb_validate_win_bpp - validate the bits-per-pixel for this mode.
+ * @win: The device window.
+ * @bpp: The bit depth.
*/
-static int s3c_fb_win_has_palette(unsigned int win, unsigned int bpp)
+static bool s3c_fb_validate_win_bpp(struct s3c_fb_win *win, unsigned int bpp)
{
- return s3c_fb_win_pal_size(win) <= (1 << bpp);
+ return win->variant.valid_bpp & VALID_BPP(bpp);
}
/**
@@ -125,7 +167,7 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var,
var->xres_virtual = max((unsigned int)windata->virtual_x, var->xres);
var->yres_virtual = max((unsigned int)windata->virtual_y, var->yres);
- if (!s3c_fb_validate_win_bpp(win->index, var->bits_per_pixel)) {
+ if (!s3c_fb_validate_win_bpp(win, var->bits_per_pixel)) {
dev_dbg(sfb->dev, "win %d: unsupported bpp %d\n",
win->index, var->bits_per_pixel);
return -EINVAL;
@@ -140,7 +182,7 @@ static int s3c_fb_check_var(struct fb_var_screeninfo *var,
case 2:
case 4:
case 8:
- if (!s3c_fb_win_has_palette(win->index, var->bits_per_pixel)) {
+ if (sfb->variant.palette[win->index] != 0) {
/* non palletised, A:1,R:2,G:3,B:2 mode */
var->red.offset = 4;
var->green.offset = 2;
@@ -282,7 +324,7 @@ static int s3c_fb_set_par(struct fb_info *info)
info->fix.visual = FB_VISUAL_TRUECOLOR;
break;
case 8:
- if (s3c_fb_win_has_palette(win_no, 8))
+ if (win->variant.palette_sz >= 256)
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
else
info->fix.visual = FB_VISUAL_TRUECOLOR;
@@ -364,7 +406,7 @@ static int s3c_fb_set_par(struct fb_info *info)
VIDISD14C_ALPHA1_G(0xf) |
VIDISD14C_ALPHA1_B(0xf);
- if (s3c_fb_has_osd_d(win_no)) {
+ if (win->variant.has_osd_d) {
writel(data, regs + VIDOSD_D(win_no));
writel(osdc_data, regs + VIDOSD_C(win_no));
} else
@@ -471,7 +513,7 @@ static void s3c_fb_update_palette(struct s3c_fb *sfb,
void __iomem *palreg;
u32 palcon;
- palreg = sfb->regs + s3c_fb_pal_reg(win->index, reg);
+ palreg = sfb->regs + sfb->variant.palette[win->index];
dev_dbg(sfb->dev, "%s: win %d, reg %d (%p): %08x\n",
__func__, win->index, reg, palreg, value);
@@ -481,10 +523,10 @@ static void s3c_fb_update_palette(struct s3c_fb *sfb,
palcon = readl(sfb->regs + WPALCON);
writel(palcon | WPALCON_PAL_UPDATE, sfb->regs + WPALCON);
- if (s3c_fb_pal_is16(win->index))
- writew(value, palreg);
+ if (win->variant.palette_16bpp)
+ writew(value, palreg + (reg * 2));
else
- writel(value, palreg);
+ writel(value, palreg + (reg * 4));
writel(palcon, sfb->regs + WPALCON);
}
@@ -533,7 +575,7 @@ static int s3c_fb_setcolreg(unsigned regno,
break;
case FB_VISUAL_PSEUDOCOLOR:
- if (regno < s3c_fb_win_pal_size(win->index)) {
+ if (regno < win->variant.palette_sz) {
val = chan_to_field(red, &win->palette.r);
val |= chan_to_field(green, &win->palette.g);
val |= chan_to_field(blue, &win->palette.b);
@@ -736,12 +778,14 @@ static void s3c_fb_release_win(struct s3c_fb *sfb, struct s3c_fb_win *win)
/**
* s3c_fb_probe_win() - register an hardware window
* @sfb: The base resources for the hardware
+ * @variant: The variant information for this window.
* @res: Pointer to where to place the resultant window.
*
* Allocate and do the basic initialisation for one of the hardware's graphics
* windows.
*/
static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
+ struct s3c_fb_win_variant *variant,
struct s3c_fb_win **res)
{
struct fb_var_screeninfo *var;
@@ -754,7 +798,7 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
dev_dbg(sfb->dev, "probing window %d\n", win_no);
- palette_size = s3c_fb_win_pal_size(win_no);
+ palette_size = variant->palette_sz * 4;
fbinfo = framebuffer_alloc(sizeof(struct s3c_fb_win) +
palette_size * sizeof(u32), sfb->dev);
@@ -772,6 +816,7 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
win = fbinfo->par;
var = &fbinfo->var;
+ win->variant = *variant;
win->fbinfo = fbinfo;
win->parent = sfb;
win->windata = windata;
@@ -809,7 +854,7 @@ static int __devinit s3c_fb_probe_win(struct s3c_fb *sfb, unsigned int win_no,
/* create initial colour map */
- ret = fb_alloc_cmap(&fbinfo->cmap, s3c_fb_win_pal_size(win_no), 1);
+ ret = fb_alloc_cmap(&fbinfo->cmap, win->variant.palette_sz, 1);
if (ret == 0)
fb_set_cmap(&fbinfo->cmap, fbinfo);
else
@@ -852,6 +897,7 @@ static void s3c_fb_clear_win(struct s3c_fb *sfb, int win)
static int __devinit s3c_fb_probe(struct platform_device *pdev)
{
+ struct s3c_fb_driverdata *fbdrv;
struct device *dev = &pdev->dev;
struct s3c_fb_platdata *pd;
struct s3c_fb *sfb;
@@ -859,6 +905,13 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev)
int win;
int ret = 0;
+ fbdrv = (struct s3c_fb_driverdata *)platform_get_device_id(pdev)->driver_data;
+
+ if (fbdrv->variant.nr_windows > S3C_FB_MAX_WIN) {
+ dev_err(dev, "too many windows, cannot attach\n");
+ return -EINVAL;
+ }
+
pd = pdev->dev.platform_data;
if (!pd) {
dev_err(dev, "no platform data specified\n");
@@ -873,6 +926,7 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev)
sfb->dev = dev;
sfb->pdata = pd;
+ sfb->variant = fbdrv->variant;
sfb->bus_clk = clk_get(dev, "lcd");
if (IS_ERR(sfb->bus_clk)) {
@@ -914,22 +968,23 @@ static int __devinit s3c_fb_probe(struct platform_device *pdev)
/* zero all windows before we do anything */
- for (win = 0; win < S3C_FB_MAX_WIN; win++)
+ for (win = 0; win < fbdrv->variant.nr_windows; win++)
s3c_fb_clear_win(sfb, win);
/* initialise colour key controls */
- for (win = 0; win < (S3C_FB_MAX_WIN - 1); win++) {
+ for (win = 0; win < (fbdrv->variant.nr_windows - 1); win++) {
writel(0xffffff, sfb->regs + WxKEYCONy(win, 0));
writel(0xffffff, sfb->regs + WxKEYCONy(win, 1));
}
/* we have the register setup, start allocating framebuffers */
- for (win = 0; win < S3C_FB_MAX_WIN; win++) {
+ for (win = 0; win < fbdrv->variant.nr_windows; win++) {
if (!pd->win[win])
continue;
- ret = s3c_fb_probe_win(sfb, win, &sfb->windows[win]);
+ ret = s3c_fb_probe_win(sfb, win, fbdrv->win[win],
+ &sfb->windows[win]);
if (ret < 0) {
dev_err(dev, "failed to create window %d\n", win);
for (; win >= 0; win--)
@@ -1020,10 +1075,10 @@ static int s3c_fb_resume(struct platform_device *pdev)
writel(pd->vidcon1, sfb->regs + VIDCON1);
/* zero all windows before we do anything */
- for (win_no = 0; win_no < S3C_FB_MAX_WIN; win_no++)
+ for (win_no = 0; win_no < sfb->variant.nr_windows; win_no++)
s3c_fb_clear_win(sfb, win_no);
- for (win_no = 0; win_no < S3C_FB_MAX_WIN - 1; win_no++) {
+ for (win_no = 0; win_no < sfb->variant.nr_windows - 1; win_no++) {
writel(0xffffff, sfb->regs + WxKEYCONy(win_no, 1));
writel(0xffffff, sfb->regs + WxKEYCONy(win_no, 1));
}
@@ -1045,11 +1100,108 @@ static int s3c_fb_resume(struct platform_device *pdev)
#define s3c_fb_resume NULL
#endif
+
+#define VALID_BPP124 (VALID_BPP(1) | VALID_BPP(2) | VALID_BPP(4))
+#define VALID_BPP1248 (VALID_BPP124 | VALID_BPP(8))
+
+static struct s3c_fb_win_variant s3c_fb_data_64xx_wins[] __devinitdata = {
+ [0] = {
+ .has_osd_c = 1,
+ .palette_sz = 256,
+ .valid_bpp = VALID_BPP1248 | VALID_BPP(16) | VALID_BPP(24),
+ },
+ [1] = {
+ .has_osd_c = 1,
+ .has_osd_d = 1,
+ .palette_sz = 256,
+ .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) |
+ VALID_BPP(18) | VALID_BPP(19) |
+ VALID_BPP(24) | VALID_BPP(25)),
+ },
+ [2] = {
+ .has_osd_c = 1,
+ .has_osd_d = 1,
+ .palette_sz = 16,
+ .palette_16bpp = 1,
+ .valid_bpp = (VALID_BPP1248 | VALID_BPP(16) |
+ VALID_BPP(18) | VALID_BPP(19) |
+ VALID_BPP(24) | VALID_BPP(25)),
+ },
+ [3] = {
+ .has_osd_c = 1,
+ .has_osd_d = 1,
+ .palette_sz = 16,
+ .palette_16bpp = 1,
+ .valid_bpp = (VALID_BPP124 | VALID_BPP(16) |
+ VALID_BPP(18) | VALID_BPP(19) |
+ VALID_BPP(24) | VALID_BPP(25)),
+ },
+ [4] = {
+ .has_osd_c = 1,
+ .palette_sz = 4,
+ .palette_16bpp = 1,
+ .valid_bpp = (VALID_BPP(1) | VALID_BPP(2) |
+ VALID_BPP(16) | VALID_BPP(18) |
+ VALID_BPP(24) | VALID_BPP(25)),
+ },
+};
+
+static struct s3c_fb_driverdata s3c_fb_data_64xx __devinitdata = {
+ .variant = {
+ .nr_windows = 5,
+
+ .palette = {
+ [0] = 0x400,
+ [1] = 0x800,
+ [2] = 0x300,
+ [3] = 0x320,
+ [4] = 0x340,
+ },
+ },
+ .win[0] = &s3c_fb_data_64xx_wins[0],
+ .win[1] = &s3c_fb_data_64xx_wins[1],
+ .win[2] = &s3c_fb_data_64xx_wins[2],
+ .win[3] = &s3c_fb_data_64xx_wins[3],
+ .win[4] = &s3c_fb_data_64xx_wins[4],
+};
+
+static struct s3c_fb_driverdata s3c_fb_data_s5p __devinitdata = {
+ .variant = {
+ .nr_windows = 5,
+
+ .palette = {
+ [0] = 0x2400,
+ [1] = 0x2800,
+ [2] = 0x2c00,
+ [3] = 0x3000,
+ [4] = 0x3400,
+ },
+ },
+ .win[0] = &s3c_fb_data_64xx_wins[0],
+ .win[1] = &s3c_fb_data_64xx_wins[1],
+ .win[2] = &s3c_fb_data_64xx_wins[2],
+ .win[3] = &s3c_fb_data_64xx_wins[3],
+ .win[4] = &s3c_fb_data_64xx_wins[4],
+};
+
+static struct platform_device_id s3c_fb_driver_ids[] = {
+ {
+ .name = "s3c-fb",
+ .driver_data = (unsigned long)&s3c_fb_data_64xx,
+ }, {
+ .name = "s5p-fb",
+ .driver_data = (unsigned long)&s3c_fb_data_s5p,
+ },
+ {},
+};
+MODULE_DEVICE_TABLE(platform, s3c_fb_driver_ids);
+
static struct platform_driver s3c_fb_driver = {
.probe = s3c_fb_probe,
.remove = __devexit_p(s3c_fb_remove),
.suspend = s3c_fb_suspend,
.resume = s3c_fb_resume,
+ .id_table = s3c_fb_driver_ids,
.driver = {
.name = "s3c-fb",
.owner = THIS_MODULE,
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-26 13:02:54 +0000