Commit d14b272b authored by Richard Purdie's avatar Richard Purdie Committed by Russell King
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[ARM] 3848/1: pxafb: Add option of fixing video modes and spitz QVGA mode support



Add the ability to have pxafb use only certain fixed video modes
(selected on a per platform basis). This is useful on production
hardware such as the Zaurus cxx00 models where the valid modes are
known in advance and any other modes could result in hardware damage.

Following this, add support for the cxx00 QVGA mode. Mode information
is passed to the lcd_power call to allowing the panel drivers to
configure the display hardware accordingly (corgi_lcd already contains
the functionality for the cxx00 panel).

This mirrors the setup already used by w100fb.
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
parent c5d311c7
......@@ -431,10 +431,10 @@ struct platform_device corgifb_device = {
#include <asm/arch/pxafb.h>
void spitz_lcd_power(int on)
void spitz_lcd_power(int on, struct fb_var_screeninfo *var)
{
if (on)
lcdtg_hw_init(480);
lcdtg_hw_init(var->xres);
else
lcdtg_suspend();
}
......
......@@ -204,13 +204,6 @@ static struct platform_device udc_device = {
}
};
static struct pxafb_mach_info pxa_fb_info;
void __init set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info)
{
memcpy(&pxa_fb_info,hard_pxa_fb_info,sizeof(struct pxafb_mach_info));
}
static struct resource pxafb_resources[] = {
[0] = {
.start = 0x44000000,
......@@ -230,7 +223,6 @@ static struct platform_device pxafb_device = {
.name = "pxa2xx-fb",
.id = -1,
.dev = {
.platform_data = &pxa_fb_info,
.dma_mask = &fb_dma_mask,
.coherent_dma_mask = 0xffffffff,
},
......@@ -238,6 +230,11 @@ static struct platform_device pxafb_device = {
.resource = pxafb_resources,
};
void __init set_pxa_fb_info(struct pxafb_mach_info *info)
{
pxafb_device.dev.platform_data = info;
}
void __init set_pxa_fb_parent(struct device *parent_dev)
{
pxafb_device.dev.parent = parent_dev;
......
......@@ -82,7 +82,7 @@ static void idp_vlcd(int on)
}
}
static void idp_lcd_power(int on)
static void idp_lcd_power(int on, struct fb_var_screeninfo *var)
{
if (on) {
IDP_CPLD_LCD |= (1<<0);
......@@ -99,7 +99,7 @@ static void idp_lcd_power(int on)
idp_vlcd(on);
}
static struct pxafb_mach_info sharp_lm8v31 __initdata = {
static struct pxafb_mode_info sharp_lm8v31_mode = {
.pixclock = 270000,
.xres = 640,
.yres = 480,
......@@ -112,6 +112,11 @@ static struct pxafb_mach_info sharp_lm8v31 __initdata = {
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info sharp_lm8v31 = {
.modes = &sharp_lm8v31_mode,
.num_modes = 1,
.cmap_inverse = 0,
.cmap_static = 0,
.lccr0 = LCCR0_SDS,
......
......@@ -248,7 +248,7 @@ static void lpd270_backlight_power(int on)
}
/* 5.7" TFT QVGA (LoLo display number 1) */
static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
static struct pxafb_mode_info sharp_lq057q3dc02_mode = {
.pixclock = 150000,
.xres = 320,
.yres = 240,
......@@ -260,13 +260,18 @@ static struct pxafb_mach_info sharp_lq057q3dc02 __initdata = {
.upper_margin = 0x08,
.lower_margin = 0x14,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq057q3dc02 = {
.modes = &sharp_lq057q3dc02_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 12.1" TFT SVGA (LoLo display number 2) */
static struct pxafb_mach_info sharp_lq121s1dg31 __initdata = {
static struct pxafb_mode_info sharp_lq121s1dg31_mode = {
.pixclock = 50000,
.xres = 800,
.yres = 600,
......@@ -278,13 +283,18 @@ static struct pxafb_mach_info sharp_lq121s1dg31 __initdata = {
.upper_margin = 0x14,
.lower_margin = 0x0a,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq121s1dg31 = {
.modes = &sharp_lq121s1dg31_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 3.6" TFT QVGA (LoLo display number 3) */
static struct pxafb_mach_info sharp_lq036q1da01 __initdata = {
static struct pxafb_mode_info sharp_lq036q1da01_mode = {
.pixclock = 150000,
.xres = 320,
.yres = 240,
......@@ -296,13 +306,18 @@ static struct pxafb_mach_info sharp_lq036q1da01 __initdata = {
.upper_margin = 0x03,
.lower_margin = 0x03,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq036q1da01 = {
.modes = &sharp_lq036q1da01_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 6.4" TFT VGA (LoLo display number 5) */
static struct pxafb_mach_info sharp_lq64d343 __initdata = {
static struct pxafb_mode_info sharp_lq64d343_mode = {
.pixclock = 25000,
.xres = 640,
.yres = 480,
......@@ -314,13 +329,18 @@ static struct pxafb_mach_info sharp_lq64d343 __initdata = {
.upper_margin = 0x22,
.lower_margin = 0x00,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq64d343 = {
.modes = &sharp_lq64d343_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 10.4" TFT VGA (LoLo display number 7) */
static struct pxafb_mach_info sharp_lq10d368 __initdata = {
static struct pxafb_mode_info sharp_lq10d368_mode = {
.pixclock = 25000,
.xres = 640,
.yres = 480,
......@@ -332,13 +352,18 @@ static struct pxafb_mach_info sharp_lq10d368 __initdata = {
.upper_margin = 0x22,
.lower_margin = 0x00,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq10d368 = {
.modes = &sharp_lq10d368_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
};
/* 3.5" TFT QVGA (LoLo display number 8) */
static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
static struct pxafb_mode_info sharp_lq035q7db02_20_mode = {
.pixclock = 150000,
.xres = 240,
.yres = 320,
......@@ -350,6 +375,11 @@ static struct pxafb_mach_info sharp_lq035q7db02_20 __initdata = {
.upper_margin = 0x05,
.lower_margin = 0x14,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info sharp_lq035q7db02_20 = {
.modes = &sharp_lq035q7db02_20_mode,
.num_modes = 1,
.lccr0 = 0x07800080,
.lccr3 = 0x00400000,
.pxafb_backlight_power = lpd270_backlight_power,
......
......@@ -352,7 +352,7 @@ static struct platform_device *devices[] __initdata = {
&pxa_ssp,
};
static struct pxafb_mach_info sharp_lm8v31 __initdata = {
static struct pxafb_mode_info sharp_lm8v31_mode = {
.pixclock = 270000,
.xres = 640,
.yres = 480,
......@@ -365,6 +365,11 @@ static struct pxafb_mach_info sharp_lm8v31 __initdata = {
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info sharp_lm8v31 = {
.modes = &sharp_lm8v31_mode,
.num_modes = 1,
.cmap_inverse = 0,
.cmap_static = 0,
.lccr0 = LCCR0_SDS,
......
......@@ -279,7 +279,7 @@ static void mainstone_backlight_power(int on)
}
}
static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
static struct pxafb_mode_info toshiba_ltm04c380k_mode = {
.pixclock = 50000,
.xres = 640,
.yres = 480,
......@@ -291,12 +291,9 @@ static struct pxafb_mach_info toshiba_ltm04c380k __initdata = {
.upper_margin = 0,
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.pxafb_backlight_power = mainstone_backlight_power,
};
static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
static struct pxafb_mode_info toshiba_ltm035a776c_mode = {
.pixclock = 110000,
.xres = 240,
.yres = 320,
......@@ -308,6 +305,10 @@ static struct pxafb_mach_info toshiba_ltm035a776c __initdata = {
.upper_margin = 1,
.lower_margin = 10,
.sync = FB_SYNC_HOR_HIGH_ACT|FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info mainstone_pxafb_info = {
.num_modes = 1,
.lccr0 = LCCR0_Act,
.lccr3 = LCCR3_PCP,
.pxafb_backlight_power = mainstone_backlight_power,
......@@ -448,9 +449,11 @@ static void __init mainstone_init(void)
/* reading Mainstone's "Virtual Configuration Register"
might be handy to select LCD type here */
if (0)
set_pxa_fb_info(&toshiba_ltm04c380k);
mainstone_pxafb_info.modes = &toshiba_ltm04c380k_mode;
else
set_pxa_fb_info(&toshiba_ltm035a776c);
mainstone_pxafb_info.modes = &toshiba_ltm035a776c_mode;
set_pxa_fb_info(&mainstone_pxafb_info);
pxa_set_mci_info(&mainstone_mci_platform_data);
pxa_set_ficp_info(&mainstone_ficp_platform_data);
......
......@@ -296,27 +296,25 @@ static struct pxa2xx_udc_mach_info udc_info __initdata = {
/* PXAFB device */
static struct pxafb_mach_info poodle_fb_info __initdata = {
static struct pxafb_mode_info poodle_fb_mode = {
.pixclock = 144700,
.xres = 320,
.yres = 240,
.bpp = 16,
.hsync_len = 7,
.left_margin = 11,
.right_margin = 30,
.vsync_len = 2,
.upper_margin = 2,
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
};
static struct pxafb_mach_info poodle_fb_info = {
.modes = &poodle_fb_mode,
.num_modes = 1,
.lccr0 = LCCR0_Act | LCCR0_Sngl | LCCR0_Color,
.lccr3 = 0,
.pxafb_backlight_power = NULL,
.pxafb_lcd_power = NULL,
};
static struct platform_device *devices[] __initdata = {
......
......@@ -407,21 +407,42 @@ static struct pxaficp_platform_data spitz_ficp_platform_data = {
/*
* Spitz PXA Framebuffer
*/
static struct pxafb_mach_info spitz_pxafb_info __initdata = {
.pixclock = 19231,
.xres = 480,
.yres = 640,
.bpp = 16,
.hsync_len = 40,
.left_margin = 46,
.right_margin = 125,
.vsync_len = 3,
.upper_margin = 1,
.lower_margin = 0,
.sync = 0,
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_LDDALT | LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM,
.lccr3 = LCCR3_PixRsEdg | LCCR3_OutEnH,
.pxafb_lcd_power = spitz_lcd_power,
static struct pxafb_mode_info spitz_pxafb_modes[] = {
{
.pixclock = 19231,
.xres = 480,
.yres = 640,
.bpp = 16,
.hsync_len = 40,
.left_margin = 46,
.right_margin = 125,
.vsync_len = 3,
.upper_margin = 1,
.lower_margin = 0,
.sync = 0,
},{
.pixclock = 134617,
.xres = 240,
.yres = 320,
.bpp = 16,
.hsync_len = 20,
.left_margin = 20,
.right_margin = 46,
.vsync_len = 2,
.upper_margin = 1,
.lower_margin = 0,
.sync = 0,
},
};
static struct pxafb_mach_info spitz_pxafb_info = {
.modes = &spitz_pxafb_modes[0],
.num_modes = 2,
.fixed_modes = 1,
.lccr0 = LCCR0_Color | LCCR0_Sngl | LCCR0_Act | LCCR0_LDDALT | LCCR0_OUC | LCCR0_CMDIM | LCCR0_RDSTM,
.lccr3 = LCCR3_PixRsEdg | LCCR3_OutEnH,
.pxafb_lcd_power = spitz_lcd_power,
};
......
......@@ -368,7 +368,7 @@ static struct map_desc trizeps4_io_desc[] __initdata = {
}
};
static struct pxafb_mach_info sharp_lcd __initdata = {
static struct pxafb_mode_info sharp_lcd_mode = {
.pixclock = 78000,
.xres = 640,
.yres = 480,
......@@ -381,6 +381,11 @@ static struct pxafb_mach_info sharp_lcd __initdata = {
.lower_margin = 0,
.sync = FB_SYNC_HOR_HIGH_ACT | FB_SYNC_VERT_HIGH_ACT,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info sharp_lcd = {
.modes = &sharp_lcd_mode,
.num_modes = 1,
.cmap_inverse = 0,
.cmap_static = 0,
.lccr0 = LCCR0_Color | LCCR0_Pas | LCCR0_Dual,
......
......@@ -59,7 +59,7 @@
#define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP|LCCR3_VSP|LCCR3_PCD|LCCR3_BPP)
static void (*pxafb_backlight_power)(int);
static void (*pxafb_lcd_power)(int);
static void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *);
static int pxafb_activate_var(struct fb_var_screeninfo *var, struct pxafb_info *);
static void set_ctrlr_state(struct pxafb_info *fbi, u_int state);
......@@ -213,6 +213,48 @@ static unsigned int pxafb_display_dma_period(struct fb_var_screeninfo *var)
extern unsigned int get_clk_frequency_khz(int info);
#endif
/*
* Select the smallest mode that allows the desired resolution to be
* displayed. If desired parameters can be rounded up.
*/
static struct pxafb_mode_info *pxafb_getmode(struct pxafb_mach_info *mach, struct fb_var_screeninfo *var)
{
struct pxafb_mode_info *mode = NULL;
struct pxafb_mode_info *modelist = mach->modes;
unsigned int best_x = 0xffffffff, best_y = 0xffffffff;
unsigned int i;
for (i = 0 ; i < mach->num_modes ; i++) {
if (modelist[i].xres >= var->xres && modelist[i].yres >= var->yres &&
modelist[i].xres < best_x && modelist[i].yres < best_y &&
modelist[i].bpp >= var->bits_per_pixel ) {
best_x = modelist[i].xres;
best_y = modelist[i].yres;
mode = &modelist[i];
}
}
return mode;
}
static void pxafb_setmode(struct fb_var_screeninfo *var, struct pxafb_mode_info *mode)
{
var->xres = mode->xres;
var->yres = mode->yres;
var->bits_per_pixel = mode->bpp;
var->pixclock = mode->pixclock;
var->hsync_len = mode->hsync_len;
var->left_margin = mode->left_margin;
var->right_margin = mode->right_margin;
var->vsync_len = mode->vsync_len;
var->upper_margin = mode->upper_margin;
var->lower_margin = mode->lower_margin;
var->sync = mode->sync;
var->grayscale = mode->cmap_greyscale;
var->xres_virtual = var->xres;
var->yres_virtual = var->yres;
}
/*
* pxafb_check_var():
* Get the video params out of 'var'. If a value doesn't fit, round it up,
......@@ -225,15 +267,29 @@ extern unsigned int get_clk_frequency_khz(int info);
static int pxafb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
struct pxafb_info *fbi = (struct pxafb_info *)info;
struct pxafb_mach_info *inf = fbi->dev->platform_data;
if (var->xres < MIN_XRES)
var->xres = MIN_XRES;
if (var->yres < MIN_YRES)
var->yres = MIN_YRES;
if (var->xres > fbi->max_xres)
return -EINVAL;
if (var->yres > fbi->max_yres)
return -EINVAL;
if (inf->fixed_modes) {
struct pxafb_mode_info *mode;
mode = pxafb_getmode(inf, var);
if (!mode)
return -EINVAL;
pxafb_setmode(var, mode);
} else {
if (var->xres > inf->modes->xres)
return -EINVAL;
if (var->yres > inf->modes->yres)
return -EINVAL;
if (var->bits_per_pixel > inf->modes->bpp)
return -EINVAL;
}
var->xres_virtual =
max(var->xres_virtual, var->xres);
var->yres_virtual =
......@@ -693,7 +749,7 @@ static inline void __pxafb_lcd_power(struct pxafb_info *fbi, int on)
pr_debug("pxafb: LCD power o%s\n", on ? "n" : "ff");
if (pxafb_lcd_power)
pxafb_lcd_power(on);
pxafb_lcd_power(on, &fbi->fb.var);
}
static void pxafb_setup_gpio(struct pxafb_info *fbi)
......@@ -869,9 +925,11 @@ static void set_ctrlr_state(struct pxafb_info *fbi, u_int state)
* registers.
*/
if (old_state == C_ENABLE) {
__pxafb_lcd_power(fbi, 0);
pxafb_disable_controller(fbi);
pxafb_setup_gpio(fbi);
pxafb_enable_controller(fbi);
__pxafb_lcd_power(fbi, 1);
}
break;
......@@ -1049,6 +1107,8 @@ static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
struct pxafb_info *fbi;
void *addr;
struct pxafb_mach_info *inf = dev->platform_data;
struct pxafb_mode_info *mode = inf->modes;
int i, smemlen;
/* Alloc the pxafb_info and pseudo_palette in one step */
fbi = kmalloc(sizeof(struct pxafb_info) + sizeof(u32) * 16, GFP_KERNEL);
......@@ -1082,31 +1142,21 @@ static struct pxafb_info * __init pxafb_init_fbinfo(struct device *dev)
addr = addr + sizeof(struct pxafb_info);
fbi->fb.pseudo_palette = addr;
fbi->max_xres = inf->xres;
fbi->fb.var.xres = inf->xres;
fbi->fb.var.xres_virtual = inf->xres;
fbi->max_yres = inf->yres;
fbi->fb.var.yres = inf->yres;
fbi->fb.var.yres_virtual = inf->yres;
fbi->max_bpp = inf->bpp;
fbi->fb.var.bits_per_pixel = inf->bpp;
fbi->fb.var.pixclock = inf->pixclock;
fbi->fb.var.hsync_len = inf->hsync_len;
fbi->fb.var.left_margin = inf->left_margin;
fbi->fb.var.right_margin = inf->right_margin;
fbi->fb.var.vsync_len = inf->vsync_len;
fbi->fb.var.upper_margin = inf->upper_margin;
fbi->fb.var.lower_margin = inf->lower_margin;
fbi->fb.var.sync = inf->sync;
fbi->fb.var.grayscale = inf->cmap_greyscale;
pxafb_setmode(&fbi->fb.var, mode);
fbi->cmap_inverse = inf->cmap_inverse;
fbi->cmap_static = inf->cmap_static;
fbi->lccr0 = inf->lccr0;
fbi->lccr3 = inf->lccr3;
fbi->state = C_STARTUP;
fbi->task_state = (u_char)-1;
fbi->fb.fix.smem_len = fbi->max_xres * fbi->max_yres *
fbi->max_bpp / 8;
for (i = 0; i < inf->num_modes; i++) {
smemlen = mode[i].xres * mode[i].yres * mode[i].bpp / 8;
if (smemlen > fbi->fb.fix.smem_len)
fbi->fb.fix.smem_len = smemlen;
}
init_waitqueue_head(&fbi->ctrlr_wait);
INIT_WORK(&fbi->task, pxafb_task, fbi);
......@@ -1307,12 +1357,12 @@ int __init pxafb_probe(struct platform_device *dev)
(inf->lccr0 & LCCR0_SDS) == LCCR0_Dual)
dev_warn(&dev->dev, "Dual panel only valid in passive mode\n");
if ((inf->lccr0 & LCCR0_PAS) == LCCR0_Pas &&
(inf->upper_margin || inf->lower_margin))
(inf->modes->upper_margin || inf->modes->lower_margin))
dev_warn(&dev->dev, "Upper and lower margins must be 0 in passive mode\n");
#endif
dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",inf->xres, inf->yres, inf->bpp);
if (inf->xres == 0 || inf->yres == 0 || inf->bpp == 0) {
dev_dbg(&dev->dev, "got a %dx%dx%d LCD\n",inf->modes->xres, inf->modes->yres, inf->modes->bpp);
if (inf->modes->xres == 0 || inf->modes->yres == 0 || inf->modes->bpp == 0) {
dev_err(&dev->dev, "Invalid resolution or bit depth\n");
ret = -EINVAL;
goto failed;
......
......@@ -41,10 +41,6 @@ struct pxafb_info {
struct fb_info fb;
struct device *dev;
u_int max_bpp;
u_int max_xres;
u_int max_yres;
/*
* These are the addresses we mapped
* the framebuffer memory region to.
......
......@@ -12,12 +12,14 @@
* published by the Free Software Foundation.
*/
#include <linux/fb.h>
/*
* This structure describes the machine which we are running on.
* It is set in linux/arch/arm/mach-pxa/machine_name.c and used in the probe routine
* of linux/drivers/video/pxafb.c
*/
struct pxafb_mach_info {
struct pxafb_mode_info {
u_long pixclock;
u_short xres;
......@@ -34,6 +36,14 @@ struct pxafb_mach_info {
u_char sync;
u_int cmap_greyscale:1,
unused:31;
};
struct pxafb_mach_info {
struct pxafb_mode_info *modes;
unsigned int num_modes;
u_int fixed_modes:1,
cmap_inverse:1,
cmap_static:1,
unused:29;
......@@ -62,7 +72,7 @@ struct pxafb_mach_info {
u_int lccr3;
void (*pxafb_backlight_power)(int);
void (*pxafb_lcd_power)(int);
void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *);
};
void set_pxa_fb_info(struct pxafb_mach_info *hard_pxa_fb_info);
......
......@@ -15,6 +15,8 @@
#define __ASM_ARCH_SPITZ_H 1
#endif