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path: root/drivers/video/s3c2410fb.c
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Diffstat (limited to 'drivers/video/s3c2410fb.c')
-rw-r--r--drivers/video/s3c2410fb.c88
1 files changed, 57 insertions, 31 deletions
diff --git a/drivers/video/s3c2410fb.c b/drivers/video/s3c2410fb.c
index ed3426062a8b..8a4c6470d799 100644
--- a/drivers/video/s3c2410fb.c
+++ b/drivers/video/s3c2410fb.c
@@ -474,6 +474,7 @@ static void schedule_palette_update(struct s3c2410fb_info *fbi,
{
unsigned long flags;
unsigned long irqen;
+ void __iomem *regs = fbi->io;
local_irq_save(flags);
@@ -483,9 +484,9 @@ static void schedule_palette_update(struct s3c2410fb_info *fbi,
fbi->palette_ready = 1;
/* enable IRQ */
- irqen = readl(S3C2410_LCDINTMSK);
+ irqen = readl(regs + S3C2410_LCDINTMSK);
irqen &= ~S3C2410_LCDINT_FRSYNC;
- writel(irqen, S3C2410_LCDINTMSK);
+ writel(irqen, regs + S3C2410_LCDINTMSK);
}
local_irq_restore(flags);
@@ -680,6 +681,7 @@ static inline void modify_gpio(void __iomem *reg,
static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi)
{
unsigned long flags;
+ void __iomem *regs = fbi->io;
/* Initialise LCD with values from haret */
@@ -694,25 +696,25 @@ static int s3c2410fb_init_registers(struct s3c2410fb_info *fbi)
local_irq_restore(flags);
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
- writel(fbi->regs.lcdcon2, S3C2410_LCDCON2);
- writel(fbi->regs.lcdcon3, S3C2410_LCDCON3);
- writel(fbi->regs.lcdcon4, S3C2410_LCDCON4);
- writel(fbi->regs.lcdcon5, S3C2410_LCDCON5);
+ writel(fbi->regs.lcdcon1, regs + S3C2410_LCDCON1);
+ writel(fbi->regs.lcdcon2, regs + S3C2410_LCDCON2);
+ writel(fbi->regs.lcdcon3, regs + S3C2410_LCDCON3);
+ writel(fbi->regs.lcdcon4, regs + S3C2410_LCDCON4);
+ writel(fbi->regs.lcdcon5, regs + S3C2410_LCDCON5);
s3c2410fb_set_lcdaddr(fbi);
dprintk("LPCSEL = 0x%08lx\n", mach_info->lpcsel);
- writel(mach_info->lpcsel, S3C2410_LPCSEL);
+ writel(mach_info->lpcsel, regs + S3C2410_LPCSEL);
- dprintk("replacing TPAL %08x\n", readl(S3C2410_TPAL));
+ dprintk("replacing TPAL %08x\n", readl(regs + S3C2410_TPAL));
/* ensure temporary palette disabled */
- writel(0x00, S3C2410_TPAL);
+ writel(0x00, regs + S3C2410_TPAL);
/* Enable video by setting the ENVID bit to 1 */
fbi->regs.lcdcon1 |= S3C2410_LCDCON1_ENVID;
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
+ writel(fbi->regs.lcdcon1, regs + S3C2410_LCDCON1);
return 0;
}
@@ -720,6 +722,7 @@ static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi)
{
unsigned int i;
unsigned long ent;
+ void __iomem *regs = fbi->io;
fbi->palette_ready = 0;
@@ -727,14 +730,14 @@ static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi)
if ((ent = fbi->palette_buffer[i]) == PALETTE_BUFF_CLEAR)
continue;
- writel(ent, S3C2410_TFTPAL(i));
+ writel(ent, regs + S3C2410_TFTPAL(i));
/* it seems the only way to know exactly
* if the palette wrote ok, is to check
* to see if the value verifies ok
*/
- if (readw(S3C2410_TFTPAL(i)) == ent)
+ if (readw(regs + S3C2410_TFTPAL(i)) == ent)
fbi->palette_buffer[i] = PALETTE_BUFF_CLEAR;
else
fbi->palette_ready = 1; /* retry */
@@ -744,14 +747,15 @@ static void s3c2410fb_write_palette(struct s3c2410fb_info *fbi)
static irqreturn_t s3c2410fb_irq(int irq, void *dev_id)
{
struct s3c2410fb_info *fbi = dev_id;
- unsigned long lcdirq = readl(S3C2410_LCDINTPND);
+ void __iomem *regs = fbi->io;
+ unsigned long lcdirq = readl(regs + S3C2410_LCDINTPND);
if (lcdirq & S3C2410_LCDINT_FRSYNC) {
if (fbi->palette_ready)
s3c2410fb_write_palette(fbi);
- writel(S3C2410_LCDINT_FRSYNC, S3C2410_LCDINTPND);
- writel(S3C2410_LCDINT_FRSYNC, S3C2410_LCDSRCPND);
+ writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDINTPND);
+ writel(S3C2410_LCDINT_FRSYNC, regs + S3C2410_LCDSRCPND);
}
return IRQ_HANDLED;
@@ -764,9 +768,11 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
struct s3c2410fb_info *info;
struct fb_info *fbinfo;
struct s3c2410fb_hw *mregs;
+ struct resource *res;
int ret;
int irq;
int i;
+ int size;
u32 lcdcon1;
mach_info = pdev->dev.platform_data;
@@ -788,11 +794,32 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
return -ENOMEM;
}
-
info = fbinfo->par;
info->fb = fbinfo;
info->dev = &pdev->dev;
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res == NULL) {
+ dev_err(&pdev->dev, "failed to get memory registersn");
+ ret = -ENXIO;
+ goto dealloc_fb;
+ }
+
+ size = (res->end - res->start)+1;
+ info->mem = request_mem_region(res->start, size, pdev->name);
+ if (info->mem == NULL) {
+ dev_err(&pdev->dev, "failed to get memory region\n");
+ ret = -ENOENT;
+ goto dealloc_fb;
+ }
+
+ info->io = ioremap(res->start, size);
+ if (info->io == NULL) {
+ dev_err(&pdev->dev, "ioremap() of registers failed\n");
+ ret = -ENXIO;
+ goto release_mem;
+ }
+
platform_set_drvdata(pdev, fbinfo);
dprintk("devinit\n");
@@ -803,8 +830,8 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
/* Stop the video and unset ENVID if set */
info->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID;
- lcdcon1 = readl(S3C2410_LCDCON1);
- writel(lcdcon1 & ~S3C2410_LCDCON1_ENVID, S3C2410_LCDCON1);
+ lcdcon1 = readl(info->io + S3C2410_LCDCON1);
+ writel(lcdcon1 & ~S3C2410_LCDCON1_ENVID, info->io + S3C2410_LCDCON1);
info->mach_info = pdev->dev.platform_data;
@@ -855,19 +882,11 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
for (i = 0; i < 256; i++)
info->palette_buffer[i] = PALETTE_BUFF_CLEAR;
- if (!request_mem_region((unsigned long)S3C24XX_VA_LCD, SZ_1M, "s3c2410-lcd")) {
- ret = -EBUSY;
- goto dealloc_fb;
- }
-
-
- dprintk("got LCD region\n");
-
ret = request_irq(irq, s3c2410fb_irq, IRQF_DISABLED, pdev->name, info);
if (ret) {
dev_err(&pdev->dev, "cannot get irq %d - err %d\n", irq, ret);
ret = -EBUSY;
- goto release_mem;
+ goto release_regs;
}
info->clk = clk_get(NULL, "lcd");
@@ -889,6 +908,7 @@ static int __init s3c2410fb_probe(struct platform_device *pdev)
ret = -ENOMEM;
goto release_clock;
}
+
dprintk("got video memory\n");
ret = s3c2410fb_init_registers(info);
@@ -916,8 +936,11 @@ release_clock:
clk_put(info->clk);
release_irq:
free_irq(irq,info);
+release_regs:
+ iounmap(info->io);
release_mem:
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
+ release_resource(info->mem);
+ kfree(info->mem);
dealloc_fb:
framebuffer_release(fbinfo);
return ret;
@@ -935,7 +958,7 @@ static void s3c2410fb_stop_lcd(struct s3c2410fb_info *fbi)
local_irq_save(flags);
fbi->regs.lcdcon1 &= ~S3C2410_LCDCON1_ENVID;
- writel(fbi->regs.lcdcon1, S3C2410_LCDCON1);
+ writel(fbi->regs.lcdcon1, fbi->io + S3C2410_LCDCON1);
local_irq_restore(flags);
}
@@ -962,7 +985,10 @@ static int s3c2410fb_remove(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
free_irq(irq,info);
- release_mem_region((unsigned long)S3C24XX_VA_LCD, S3C24XX_SZ_LCD);
+
+ release_resource(info->mem);
+ kfree(info->mem);
+ iounmap(info->io);
unregister_framebuffer(fbinfo);
return 0;
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-23 12:23:56 +0100