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-rw-r--r--drivers/video/sa1100fb.c68
-rw-r--r--drivers/video/sa1100fb.h11
2 files changed, 54 insertions, 25 deletions
diff --git a/drivers/video/sa1100fb.c b/drivers/video/sa1100fb.c
index 379b2c5000a3..b6325848ad61 100644
--- a/drivers/video/sa1100fb.c
+++ b/drivers/video/sa1100fb.c
@@ -705,9 +705,12 @@ static int sa1100fb_activate_var(struct fb_var_screeninfo *var, struct sa1100fb_
* Only update the registers if the controller is enabled
* and something has changed.
*/
- if ((LCCR0 != fbi->reg_lccr0) || (LCCR1 != fbi->reg_lccr1) ||
- (LCCR2 != fbi->reg_lccr2) || (LCCR3 != fbi->reg_lccr3) ||
- (DBAR1 != fbi->dbar1) || (DBAR2 != fbi->dbar2))
+ if (readl_relaxed(fbi->base + LCCR0) != fbi->reg_lccr0 ||
+ readl_relaxed(fbi->base + LCCR1) != fbi->reg_lccr1 ||
+ readl_relaxed(fbi->base + LCCR2) != fbi->reg_lccr2 ||
+ readl_relaxed(fbi->base + LCCR3) != fbi->reg_lccr3 ||
+ readl_relaxed(fbi->base + DBAR1) != fbi->dbar1 ||
+ readl_relaxed(fbi->base + DBAR2) != fbi->dbar2)
sa1100fb_schedule_work(fbi, C_REENABLE);
return 0;
@@ -789,28 +792,29 @@ static void sa1100fb_enable_controller(struct sa1100fb_info *fbi)
fbi->palette_cpu[0] |= palette_pbs(&fbi->fb.var);
/* Sequence from 11.7.10 */
- LCCR3 = fbi->reg_lccr3;
- LCCR2 = fbi->reg_lccr2;
- LCCR1 = fbi->reg_lccr1;
- LCCR0 = fbi->reg_lccr0 & ~LCCR0_LEN;
- DBAR1 = fbi->dbar1;
- DBAR2 = fbi->dbar2;
- LCCR0 |= LCCR0_LEN;
+ writel_relaxed(fbi->reg_lccr3, fbi->base + LCCR3);
+ writel_relaxed(fbi->reg_lccr2, fbi->base + LCCR2);
+ writel_relaxed(fbi->reg_lccr1, fbi->base + LCCR1);
+ writel_relaxed(fbi->reg_lccr0 & ~LCCR0_LEN, fbi->base + LCCR0);
+ writel_relaxed(fbi->dbar1, fbi->base + DBAR1);
+ writel_relaxed(fbi->dbar2, fbi->base + DBAR2);
+ writel_relaxed(fbi->reg_lccr0 | LCCR0_LEN, fbi->base + LCCR0);
if (machine_is_shannon())
gpio_set_value(SHANNON_GPIO_DISP_EN, 1);
- dev_dbg(fbi->dev, "DBAR1 = 0x%08lx\n", DBAR1);
- dev_dbg(fbi->dev, "DBAR2 = 0x%08lx\n", DBAR2);
- dev_dbg(fbi->dev, "LCCR0 = 0x%08lx\n", LCCR0);
- dev_dbg(fbi->dev, "LCCR1 = 0x%08lx\n", LCCR1);
- dev_dbg(fbi->dev, "LCCR2 = 0x%08lx\n", LCCR2);
- dev_dbg(fbi->dev, "LCCR3 = 0x%08lx\n", LCCR3);
+ dev_dbg(fbi->dev, "DBAR1: 0x%08x\n", readl_relaxed(fbi->base + DBAR1));
+ dev_dbg(fbi->dev, "DBAR2: 0x%08x\n", readl_relaxed(fbi->base + DBAR2));
+ dev_dbg(fbi->dev, "LCCR0: 0x%08x\n", readl_relaxed(fbi->base + LCCR0));
+ dev_dbg(fbi->dev, "LCCR1: 0x%08x\n", readl_relaxed(fbi->base + LCCR1));
+ dev_dbg(fbi->dev, "LCCR2: 0x%08x\n", readl_relaxed(fbi->base + LCCR2));
+ dev_dbg(fbi->dev, "LCCR3: 0x%08x\n", readl_relaxed(fbi->base + LCCR3));
}
static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
{
DECLARE_WAITQUEUE(wait, current);
+ u32 lccr0;
dev_dbg(fbi->dev, "Disabling LCD controller\n");
@@ -820,9 +824,14 @@ static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
set_current_state(TASK_UNINTERRUPTIBLE);
add_wait_queue(&fbi->ctrlr_wait, &wait);
- LCSR = 0xffffffff; /* Clear LCD Status Register */
- LCCR0 &= ~LCCR0_LDM; /* Enable LCD Disable Done Interrupt */
- LCCR0 &= ~LCCR0_LEN; /* Disable LCD Controller */
+ /* Clear LCD Status Register */
+ writel_relaxed(~0, fbi->base + LCSR);
+
+ lccr0 = readl_relaxed(fbi->base + LCCR0);
+ lccr0 &= ~LCCR0_LDM; /* Enable LCD Disable Done Interrupt */
+ writel_relaxed(lccr0, fbi->base + LCCR0);
+ lccr0 &= ~LCCR0_LEN; /* Disable LCD Controller */
+ writel_relaxed(lccr0, fbi->base + LCCR0);
schedule_timeout(20 * HZ / 1000);
remove_wait_queue(&fbi->ctrlr_wait, &wait);
@@ -834,14 +843,15 @@ static void sa1100fb_disable_controller(struct sa1100fb_info *fbi)
static irqreturn_t sa1100fb_handle_irq(int irq, void *dev_id)
{
struct sa1100fb_info *fbi = dev_id;
- unsigned int lcsr = LCSR;
+ unsigned int lcsr = readl_relaxed(fbi->base + LCSR);
if (lcsr & LCSR_LDD) {
- LCCR0 |= LCCR0_LDM;
+ u32 lccr0 = readl_relaxed(fbi->base + LCCR0) | LCCR0_LDM;
+ writel_relaxed(lccr0, fbi->base + LCCR0);
wake_up(&fbi->ctrlr_wait);
}
- LCSR = lcsr;
+ writel_relaxed(lcsr, fbi->base + LCSR);
return IRQ_HANDLED;
}
@@ -1198,6 +1208,7 @@ static struct sa1100fb_info * __devinit sa1100fb_init_fbinfo(struct device *dev)
static int __devinit sa1100fb_probe(struct platform_device *pdev)
{
struct sa1100fb_info *fbi;
+ struct resource *res;
int ret, irq;
if (!pdev->dev.platform_data) {
@@ -1205,11 +1216,12 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
return -EINVAL;
}
+ res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
- if (irq < 0)
+ if (irq < 0 || !res)
return -EINVAL;
- if (!request_mem_region(0xb0100000, 0x10000, "LCD"))
+ if (!request_mem_region(res->start, resource_size(res), "LCD"))
return -EBUSY;
fbi = sa1100fb_init_fbinfo(&pdev->dev);
@@ -1217,6 +1229,10 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
if (!fbi)
goto failed;
+ fbi->base = ioremap(res->start, resource_size(res));
+ if (!fbi->base)
+ goto failed;
+
/* Initialize video memory */
ret = sa1100fb_map_video_memory(fbi);
if (ret)
@@ -1263,9 +1279,11 @@ static int __devinit sa1100fb_probe(struct platform_device *pdev)
err_free_irq:
free_irq(irq, fbi);
failed:
+ if (fbi)
+ iounmap(fbi->base);
platform_set_drvdata(pdev, NULL);
kfree(fbi);
- release_mem_region(0xb0100000, 0x10000);
+ release_mem_region(res->start, resource_size(res));
return ret;
}
diff --git a/drivers/video/sa1100fb.h b/drivers/video/sa1100fb.h
index e968e1d69520..fc5d4292fad6 100644
--- a/drivers/video/sa1100fb.h
+++ b/drivers/video/sa1100fb.h
@@ -10,6 +10,16 @@
* for more details.
*/
+#define LCCR0 0x0000 /* LCD Control Reg. 0 */
+#define LCSR 0x0004 /* LCD Status Reg. */
+#define DBAR1 0x0010 /* LCD DMA Base Address Reg. channel 1 */
+#define DCAR1 0x0014 /* LCD DMA Current Address Reg. channel 1 */
+#define DBAR2 0x0018 /* LCD DMA Base Address Reg. channel 2 */
+#define DCAR2 0x001C /* LCD DMA Current Address Reg. channel 2 */
+#define LCCR1 0x0020 /* LCD Control Reg. 1 */
+#define LCCR2 0x0024 /* LCD Control Reg. 2 */
+#define LCCR3 0x0028 /* LCD Control Reg. 3 */
+
/* Shadows for LCD controller registers */
struct sa1100fb_lcd_reg {
unsigned long lccr0;
@@ -22,6 +32,7 @@ struct sa1100fb_info {
struct fb_info fb;
struct device *dev;
const struct sa1100fb_rgb *rgb[NR_RGB];
+ void __iomem *base;
/*
* These are the addresses we mapped
generated by cgit v1.2.3 (git 2.39.0) at 2024-11-01 17:43:19 +0300