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Date: Tue, 8 Apr 2008 12:03:16 +0800
From: "eric miao" <eric.y.miao@...il.com>
To: "linux-arm-kernel email list"
<linux-arm-kernel@...ts.arm.linux.org.uk>,
linux-fbdev-devel@...ts.sourceforge.net,
lkml <linux-kernel@...r.kernel.org>
Cc: "Russell King - ARM Linux" <linux@....linux.org.uk>,
"Andrew Morton" <akpm@...ux-foundation.org>
Subject: [PATCH 1/4] pxafb: introduce lcd_{read,write}l() to wrap the __raw_{read,write}l()
>From 917ed27ddcaca455f7799f74a1db9a4497725de8 Mon Sep 17 00:00:00 2001
From: Eric Miao <eric.miao@...vell.com>
Date: Thu, 27 Mar 2008 09:28:32 +0800
Subject: [PATCH] pxafb: introduce lcd_{read,write}l() to wrap the
__raw_{read,write}l()
using __raw_{read,write}l() everywhere looks messy, introduce
lcd_{read,write}l() to get this cleaned up a bit
Signed-off-by: eric miao <eric.miao@...vell.com>
---
drivers/video/pxafb.c | 50 +++++++++++++++++++++++++-----------------------
1 files changed, 26 insertions(+), 24 deletions(-)
diff --git a/drivers/video/pxafb.c b/drivers/video/pxafb.c
index 0031a5f..27d9fed 100644
--- a/drivers/video/pxafb.c
+++ b/drivers/video/pxafb.c
@@ -64,6 +64,9 @@
#define LCCR3_INVALID_CONFIG_MASK (LCCR3_HSP | LCCR3_VSP |\
LCCR3_PCD | LCCR3_BPP)
+#define lcd_readl(f, off) __raw_readl((f)->mmio_base + (off))
+#define lcd_writel(f, off, v) __raw_writel((v), (f)->mmio_base + (off))
+
static void (*pxafb_backlight_power)(int);
static void (*pxafb_lcd_power)(int, struct fb_var_screeninfo *);
@@ -684,8 +687,7 @@ static int pxafb_activate_var(struct fb_var_screeninfo *var,
fbi->reg_lccr1 = new_regs.lccr1;
fbi->reg_lccr2 = new_regs.lccr2;
fbi->reg_lccr3 = new_regs.lccr3;
- fbi->reg_lccr4 = __raw_readl(fbi->mmio_base + LCCR4) &
- (~LCCR4_PAL_FOR_MASK);
+ fbi->reg_lccr4 = lcd_readl(fbi, LCCR4) & ~LCCR4_PAL_FOR_MASK;
fbi->reg_lccr4 |= (fbi->lccr4 & LCCR4_PAL_FOR_MASK);
set_hsync_time(fbi, pcd);
local_irq_restore(flags);
@@ -694,12 +696,12 @@ static int pxafb_activate_var(struct
fb_var_screeninfo *var,
* Only update the registers if the controller is enabled
* and something has changed.
*/
- if ((__raw_readl(fbi->mmio_base + LCCR0) != fbi->reg_lccr0) ||
- (__raw_readl(fbi->mmio_base + LCCR1) != fbi->reg_lccr1) ||
- (__raw_readl(fbi->mmio_base + LCCR2) != fbi->reg_lccr2) ||
- (__raw_readl(fbi->mmio_base + LCCR3) != fbi->reg_lccr3) ||
- (__raw_readl(fbi->mmio_base + FDADR0) != fbi->fdadr[0]) ||
- (__raw_readl(fbi->mmio_base + FDADR1) != fbi->fdadr[1]))
+ if ((lcd_readl(fbi, LCCR0) != fbi->reg_lccr0) ||
+ (lcd_readl(fbi, LCCR1) != fbi->reg_lccr1) ||
+ (lcd_readl(fbi, LCCR2) != fbi->reg_lccr2) ||
+ (lcd_readl(fbi, LCCR3) != fbi->reg_lccr3) ||
+ (lcd_readl(fbi, FDADR0) != fbi->fdadr[0]) ||
+ (lcd_readl(fbi, FDADR1) != fbi->fdadr[1]))
pxafb_schedule_work(fbi, C_REENABLE);
return 0;
@@ -785,14 +787,14 @@ static void pxafb_enable_controller(struct
pxafb_info *fbi)
clk_enable(fbi->clk);
/* Sequence from 11.7.10 */
- __raw_writel(fbi->reg_lccr3, fbi->mmio_base + LCCR3);
- __raw_writel(fbi->reg_lccr2, fbi->mmio_base + LCCR2);
- __raw_writel(fbi->reg_lccr1, fbi->mmio_base + LCCR1);
- __raw_writel(fbi->reg_lccr0 & ~LCCR0_ENB, fbi->mmio_base + LCCR0);
-
- __raw_writel(fbi->fdadr[0], fbi->mmio_base + FDADR0);
- __raw_writel(fbi->fdadr[1], fbi->mmio_base + FDADR1);
- __raw_writel(fbi->reg_lccr0 | LCCR0_ENB, fbi->mmio_base + LCCR0);
+ lcd_writel(fbi, LCCR3, fbi->reg_lccr3);
+ lcd_writel(fbi, LCCR2, fbi->reg_lccr2);
+ lcd_writel(fbi, LCCR1, fbi->reg_lccr1);
+ lcd_writel(fbi, LCCR0, fbi->reg_lccr0 & ~LCCR0_ENB);
+
+ lcd_writel(fbi, FDADR0, fbi->fdadr[0]);
+ lcd_writel(fbi, FDADR1, fbi->fdadr[1]);
+ lcd_writel(fbi, LCCR0, fbi->reg_lccr0 | LCCR0_ENB);
}
static void pxafb_disable_controller(struct pxafb_info *fbi)
@@ -805,11 +807,11 @@ static void pxafb_disable_controller(struct
pxafb_info *fbi)
add_wait_queue(&fbi->ctrlr_wait, &wait);
/* Clear LCD Status Register */
- __raw_writel(0xffffffff, fbi->mmio_base + LCSR);
+ lcd_writel(fbi, LCSR, 0xffffffff);
- lccr0 = __raw_readl(fbi->mmio_base + LCCR0) & ~LCCR0_LDM;
- __raw_writel(lccr0, fbi->mmio_base + LCCR0);
- __raw_writel(lccr0 | LCCR0_DIS, fbi->mmio_base + LCCR0);
+ lccr0 = lcd_readl(fbi, LCCR0) & ~LCCR0_LDM;
+ lcd_writel(fbi, LCCR0, lccr0);
+ lcd_writel(fbi, LCCR0, lccr0 | LCCR0_DIS);
schedule_timeout(200 * HZ / 1000);
remove_wait_queue(&fbi->ctrlr_wait, &wait);
@@ -824,15 +826,15 @@ static void pxafb_disable_controller(struct
pxafb_info *fbi)
static irqreturn_t pxafb_handle_irq(int irq, void *dev_id)
{
struct pxafb_info *fbi = dev_id;
- unsigned int lccr0, lcsr = __raw_readl(fbi->mmio_base + LCSR);
+ unsigned int lccr0, lcsr = lcd_readl(fbi, LCSR);
if (lcsr & LCSR_LDD) {
- lccr0 = __raw_readl(fbi->mmio_base + LCCR0) | LCCR0_LDM;
- __raw_writel(lccr0, fbi->mmio_base + LCCR0);
+ lccr0 = lcd_readl(fbi, LCCR0);
+ lcd_writel(fbi, LCCR0, lccr0 | LCCR0_LDM);
wake_up(&fbi->ctrlr_wait);
}
- __raw_writel(lcsr, fbi->mmio_base + LCSR);
+ lcd_writel(fbi, LCSR, lcsr);
return IRQ_HANDLED;
}
--
1.5.4.3
--
Cheers
- eric
--
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