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video: hitfb suspend/resume and updates.
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suspend/resume support for hitfb, as well as some other
minor cleanups.

Signed-off-by: Andriy Skulysh <askulysh@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Andriy Skulysh authored and Paul Mundt committed Sep 27, 2006
1 parent 6d75e65 commit 048839d
Showing 1 changed file with 181 additions and 33 deletions.
214 changes: 181 additions & 33 deletions drivers/video/hitfb.c
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Original file line number Diff line number Diff line change
Expand Up @@ -4,7 +4,7 @@
* (C) 1999 Mihai Spatar
* (C) 2000 YAEGASHI Takeshi
* (C) 2003, 2004 Paul Mundt
* (C) 2003, 2004 Andriy Skulysh
* (C) 2003, 2004, 2006 Andriy Skulysh
*
* This file is subject to the terms and conditions of the GNU General Public
* License. See the file COPYING in the main directory of this archive for
Expand All @@ -20,14 +20,14 @@
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/init.h>
#include <linux/platform_device.h>
#include <linux/fb.h>

#include <asm/machvec.h>
#include <asm/uaccess.h>
#include <asm/pgtable.h>
#include <asm/io.h>
#include <asm/hd64461/hd64461.h>

#include <asm/hd64461.h>
#include <asm/cpu/dac.h>
#include <asm/hp6xx/hp6xx.h>

Expand All @@ -43,7 +43,6 @@ static struct fb_var_screeninfo hitfb_var __initdata = {
static struct fb_fix_screeninfo hitfb_fix __initdata = {
.id = "Hitachi HD64461",
.type = FB_TYPE_PACKED_PIXELS,
.ypanstep = 8,
.accel = FB_ACCEL_NONE,
};

Expand Down Expand Up @@ -71,33 +70,23 @@ static inline void hitfb_accel_set_dest(int truecolor, u16 dx, u16 dy,
if (truecolor)
saddr <<= 1;

fb_writew(width, HD64461_BBTDWR);
fb_writew(height, HD64461_BBTDHR);
fb_writew(width-1, HD64461_BBTDWR);
fb_writew(height-1, HD64461_BBTDHR);

fb_writew(saddr & 0xffff, HD64461_BBTDSARL);
fb_writew(saddr >> 16, HD64461_BBTDSARH);

}

static inline void hitfb_accel_solidfill(int truecolor, u16 dx, u16 dy,
u16 width, u16 height, u16 color)
{
hitfb_accel_set_dest(truecolor, dx, dy, width, height);

fb_writew(0x00f0, HD64461_BBTROPR);
fb_writew(16, HD64461_BBTMDR);
fb_writew(color, HD64461_GRSCR);

hitfb_accel_start(truecolor);
}

static inline void hitfb_accel_bitblt(int truecolor, u16 sx, u16 sy, u16 dx,
u16 dy, u16 width, u16 height, u16 rop,
u32 mask_addr)
{
u32 saddr, daddr;
u32 maddr = 0;

height--;
width--;
fb_writew(rop, HD64461_BBTROPR);
if ((sy < dy) || ((sy == dy) && (sx <= dx))) {
saddr = WIDTH * (sy + height) + sx + width;
Expand Down Expand Up @@ -144,6 +133,7 @@ static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
if (rect->rop != ROP_COPY)
cfb_fillrect(p, rect);
else {
hitfb_accel_wait();
fb_writew(0x00f0, HD64461_BBTROPR);
fb_writew(16, HD64461_BBTMDR);

Expand All @@ -159,16 +149,15 @@ static void hitfb_fillrect(struct fb_info *p, const struct fb_fillrect *rect)
rect->height);
hitfb_accel_start(0);
}
hitfb_accel_wait();
}
}

static void hitfb_copyarea(struct fb_info *p, const struct fb_copyarea *area)
{
hitfb_accel_wait();
hitfb_accel_bitblt(p->var.bits_per_pixel == 16, area->sx, area->sy,
area->dx, area->dy, area->width, area->height,
0x00cc, 0);
hitfb_accel_wait();
}

static int hitfb_pan_display(struct fb_var_screeninfo *var,
Expand All @@ -180,7 +169,7 @@ static int hitfb_pan_display(struct fb_var_screeninfo *var,
if (xoffset != 0)
return -EINVAL;

fb_writew(yoffset, HD64461_LCDCBAR);
fb_writew((yoffset*info->fix.line_length)>>10, HD64461_LCDCBAR);

return 0;
}
Expand All @@ -206,21 +195,25 @@ int hitfb_blank(int blank_mode, struct fb_info *info)
v &= ~HD64461_STBCR_SLCDST;
fb_writew(v, HD64461_STBCR);

v = fb_readw(HD64461_LCDCCR);
v &= ~(HD64461_LCDCCR_MOFF | HD64461_LCDCCR_STREQ);
fb_writew(v, HD64461_LCDCCR);

do {
v = fb_readw(HD64461_LCDCCR);
} while(v&HD64461_LCDCCR_STBACK);

v = fb_readw(HD64461_LDR1);
v |= HD64461_LDR1_DON;
fb_writew(v, HD64461_LDR1);

v = fb_readw(HD64461_LCDCCR);
v &= ~HD64461_LCDCCR_MOFF;
fb_writew(v, HD64461_LCDCCR);
}
return 0;
}

static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
unsigned blue, unsigned transp, struct fb_info *info)
{
if (regno >= info->cmap.len)
if (regno >= 256)
return 1;

switch (info->var.bits_per_pixel) {
Expand All @@ -231,6 +224,8 @@ static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
fb_writew(blue >> 10, HD64461_CPTWDR);
break;
case 16:
if (regno >= 16)
return 1;
((u32 *) (info->pseudo_palette))[regno] =
((red & 0xf800)) |
((green & 0xfc00) >> 5) | ((blue & 0xf800) >> 11);
Expand All @@ -239,26 +234,113 @@ static int hitfb_setcolreg(unsigned regno, unsigned red, unsigned green,
return 0;
}

static int hitfb_sync(struct fb_info *info)
{
hitfb_accel_wait();

return 0;
}

static int hitfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
{
int maxy;

var->xres = info->var.xres;
var->xres_virtual = info->var.xres;
var->yres = info->var.yres;

if ((var->bits_per_pixel != 8) && (var->bits_per_pixel != 16))
var->bits_per_pixel = info->var.bits_per_pixel;

if (var->yres_virtual < var->yres)
var->yres_virtual = var->yres;

maxy = info->fix.smem_len / var->xres;

if (var->bits_per_pixel == 16)
maxy /= 2;

if (var->yres_virtual > maxy)
var->yres_virtual = maxy;

var->xoffset = 0;
var->yoffset = 0;

switch (var->bits_per_pixel) {
case 8:
var->red.offset = 0;
var->red.length = 8;
var->green.offset = 0;
var->green.length = 8;
var->blue.offset = 0;
var->blue.length = 8;
var->transp.offset = 0;
var->transp.length = 0;
break;
case 16: /* RGB 565 */
var->red.offset = 11;
var->red.length = 5;
var->green.offset = 5;
var->green.length = 6;
var->blue.offset = 0;
var->blue.length = 5;
var->transp.offset = 0;
var->transp.length = 0;
break;
}

return 0;
}

static int hitfb_set_par(struct fb_info *info)
{
unsigned short ldr3;

switch (info->var.bits_per_pixel) {
case 8:
info->fix.line_length = info->var.xres;
info->fix.visual = FB_VISUAL_PSEUDOCOLOR;
info->fix.ypanstep = 16;
break;
case 16:
info->fix.line_length = info->var.xres*2;
info->fix.visual = FB_VISUAL_TRUECOLOR;
info->fix.ypanstep = 8;
break;
}

fb_writew(info->fix.line_length, HD64461_LCDCLOR);
ldr3 = fb_readw(HD64461_LDR3);
ldr3 &= ~15;
ldr3 |= (info->var.bits_per_pixel == 8) ? 4 : 8;
fb_writew(ldr3, HD64461_LDR3);
return 0;
}

static struct fb_ops hitfb_ops = {
.owner = THIS_MODULE,
.fb_check_var = hitfb_check_var,
.fb_set_par = hitfb_set_par,
.fb_setcolreg = hitfb_setcolreg,
.fb_blank = hitfb_blank,
.fb_sync = hitfb_sync,
.fb_pan_display = hitfb_pan_display,
.fb_fillrect = hitfb_fillrect,
.fb_copyarea = hitfb_copyarea,
.fb_imageblit = cfb_imageblit,
};

int __init hitfb_init(void)
static int __init hitfb_probe(struct platform_device *dev)
{
unsigned short lcdclor, ldr3, ldvndr;
int size;

if (fb_get_options("hitfb", NULL))
return -ENODEV;

hitfb_fix.mmio_start = CONFIG_HD64461_IOBASE+0x1000;
hitfb_fix.mmio_len = 0x1000;
hitfb_fix.smem_start = CONFIG_HD64461_IOBASE + 0x02000000;
hitfb_fix.smem_len = (MACH_HP690) ? 1024 * 1024 : 512 * 1024;
hitfb_fix.smem_len = 512 * 1024;

lcdclor = fb_readw(HD64461_LCDCLOR);
ldvndr = fb_readw(HD64461_LDVNDR);
Expand Down Expand Up @@ -308,12 +390,12 @@ int __init hitfb_init(void)
fb_info.var = hitfb_var;
fb_info.fix = hitfb_fix;
fb_info.pseudo_palette = pseudo_palette;
fb_info.flags = FBINFO_DEFAULT;
fb_info.flags = FBINFO_DEFAULT | FBINFO_HWACCEL_YPAN |
FBINFO_HWACCEL_FILLRECT | FBINFO_HWACCEL_COPYAREA;

fb_info.screen_base = (void *)hitfb_fix.smem_start;

size = (fb_info.var.bits_per_pixel == 8) ? 256 : 16;
fb_alloc_cmap(&fb_info.cmap, size, 0);
fb_alloc_cmap(&fb_info.cmap, 256, 0);

if (register_framebuffer(&fb_info) < 0)
return -EINVAL;
Expand All @@ -323,9 +405,75 @@ int __init hitfb_init(void)
return 0;
}

static int __devexit hitfb_remove(struct platform_device *dev)
{
return unregister_framebuffer(&fb_info);
}

#ifdef CONFIG_PM
static int hitfb_suspend(struct platform_device *dev, pm_message_t state)
{
u16 v;

hitfb_blank(1,0);
v = fb_readw(HD64461_STBCR);
v |= HD64461_STBCR_SLCKE_IST;
fb_writew(v, HD64461_STBCR);

return 0;
}

static int hitfb_resume(struct platform_device *dev)
{
u16 v;

v = fb_readw(HD64461_STBCR);
v &= ~HD64461_STBCR_SLCKE_OST;
msleep(100);
v = fb_readw(HD64461_STBCR);
v &= ~HD64461_STBCR_SLCKE_IST;
fb_writew(v, HD64461_STBCR);
hitfb_blank(0,0);

return 0;
}
#endif

static struct platform_driver hitfb_driver = {
.probe = hitfb_probe,
.remove = __devexit_p(hitfb_remove),
#ifdef CONFIG_PM
.suspend = hitfb_suspend,
.resume = hitfb_resume,
#endif
.driver = {
.name = "hitfb",
},
};

static struct platform_device hitfb_device = {
.name = "hitfb",
.id = -1,
};

static int __init hitfb_init(void)
{
int ret;

ret = platform_driver_register(&hitfb_driver);
if (!ret) {
ret = platform_device_register(&hitfb_device);
if (ret)
platform_driver_unregister(&hitfb_driver);
}
return ret;
}


static void __exit hitfb_exit(void)
{
unregister_framebuffer(&fb_info);
platform_device_unregister(&hitfb_device);
platform_driver_unregister(&hitfb_driver);
}

module_init(hitfb_init);
Expand Down

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