i.MX framebuffer patches

i.MX framebuffer patches

[Sascha Hauer]

These patches are the rework of the patches I sent some time ago based
on comments from Krzysztof Helt, Andrew Dyer and Russell King. The patches
are also available as git:

git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6.git imxfb

Sascha



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[PATCH] i.MX Framebuffer: remove gpio setup function

[Sascha Hauer]

Remove the gpio mux setup function from i.MX framebuffer driver.
This function is platform specific and thus should be done by
the board setup. As there are currently no in-kernel users
of this driver we do not break anything.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   53 -------------------------------------------------
 1 files changed, 0 insertions(+), 53 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index ccd9861..a990d43 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -357,57 +357,6 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 	return 0;
 }
 
-static void imxfb_setup_gpio(struct imxfb_info *fbi)
-{
-	int width;
-
-	LCDC_RMCR	&= ~(RMCR_LCDC_EN | RMCR_SELF_REF);
-
-	if( fbi->pcr & PCR_TFT )
-		width = 16;
-	else
-		width = 1 << ((fbi->pcr >> 28) & 0x3);
-
-	switch(width) {
-	case 16:
-		imx_gpio_mode(PD30_PF_LD15);
-		imx_gpio_mode(PD29_PF_LD14);
-		imx_gpio_mode(PD28_PF_LD13);
-		imx_gpio_mode(PD27_PF_LD12);
-		imx_gpio_mode(PD26_PF_LD11);
-		imx_gpio_mode(PD25_PF_LD10);
-		imx_gpio_mode(PD24_PF_LD9);
-		imx_gpio_mode(PD23_PF_LD8);
-	case 8:
-		imx_gpio_mode(PD22_PF_LD7);
-		imx_gpio_mode(PD21_PF_LD6);
-		imx_gpio_mode(PD20_PF_LD5);
-		imx_gpio_mode(PD19_PF_LD4);
-	case 4:
-		imx_gpio_mode(PD18_PF_LD3);
-		imx_gpio_mode(PD17_PF_LD2);
-	case 2:
-		imx_gpio_mode(PD16_PF_LD1);
-	case 1:
-		imx_gpio_mode(PD15_PF_LD0);
-	}
-
-	/* initialize GPIOs */
-	imx_gpio_mode(PD6_PF_LSCLK);
-	imx_gpio_mode(PD11_PF_CONTRAST);
-	imx_gpio_mode(PD14_PF_FLM_VSYNC);
-	imx_gpio_mode(PD13_PF_LP_HSYNC);
-	imx_gpio_mode(PD12_PF_ACD_OE);
-
-	/* These are only needed for Sharp HR TFT displays */
-	if (fbi->pcr & PCR_SHARP) {
-		imx_gpio_mode(PD7_PF_REV);
-		imx_gpio_mode(PD8_PF_CLS);
-		imx_gpio_mode(PD9_PF_PS);
-		imx_gpio_mode(PD10_PF_SPL_SPR);
-	}
-}
-
 #ifdef CONFIG_PM
 /*
  * Power management hooks.  Note that we won't be called from IRQ context,
@@ -594,8 +543,6 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto failed_cmap;
 
-	imxfb_setup_gpio(fbi);
-
 	imxfb_set_par(info);
 	ret = register_framebuffer(info);
 	if (ret < 0) {
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: remove gpio setup function

[Sascha Hauer]

Remove the gpio mux setup function from i.MX framebuffer driver.
This function is platform specific and thus should be done by
the board setup. As there are currently no in-kernel users
of this driver we do not break anything.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   53 -------------------------------------------------
 1 files changed, 0 insertions(+), 53 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 60015d5..bfc537f 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -358,57 +358,6 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 	return 0;
 }
 
-static void imxfb_setup_gpio(struct imxfb_info *fbi)
-{
-	int width;
-
-	LCDC_RMCR	&= ~(RMCR_LCDC_EN | RMCR_SELF_REF);
-
-	if( fbi->pcr & PCR_TFT )
-		width = 16;
-	else
-		width = 1 << ((fbi->pcr >> 28) & 0x3);
-
-	switch(width) {
-	case 16:
-		imx_gpio_mode(PD30_PF_LD15);
-		imx_gpio_mode(PD29_PF_LD14);
-		imx_gpio_mode(PD28_PF_LD13);
-		imx_gpio_mode(PD27_PF_LD12);
-		imx_gpio_mode(PD26_PF_LD11);
-		imx_gpio_mode(PD25_PF_LD10);
-		imx_gpio_mode(PD24_PF_LD9);
-		imx_gpio_mode(PD23_PF_LD8);
-	case 8:
-		imx_gpio_mode(PD22_PF_LD7);
-		imx_gpio_mode(PD21_PF_LD6);
-		imx_gpio_mode(PD20_PF_LD5);
-		imx_gpio_mode(PD19_PF_LD4);
-	case 4:
-		imx_gpio_mode(PD18_PF_LD3);
-		imx_gpio_mode(PD17_PF_LD2);
-	case 2:
-		imx_gpio_mode(PD16_PF_LD1);
-	case 1:
-		imx_gpio_mode(PD15_PF_LD0);
-	}
-
-	/* initialize GPIOs */
-	imx_gpio_mode(PD6_PF_LSCLK);
-	imx_gpio_mode(PD11_PF_CONTRAST);
-	imx_gpio_mode(PD14_PF_FLM_VSYNC);
-	imx_gpio_mode(PD13_PF_LP_HSYNC);
-	imx_gpio_mode(PD12_PF_ACD_OE);
-
-	/* These are only needed for Sharp HR TFT displays */
-	if (fbi->pcr & PCR_SHARP) {
-		imx_gpio_mode(PD7_PF_REV);
-		imx_gpio_mode(PD8_PF_CLS);
-		imx_gpio_mode(PD9_PF_PS);
-		imx_gpio_mode(PD10_PF_SPL_SPR);
-	}
-}
-
 #ifdef CONFIG_PM
 /*
  * Power management hooks.  Note that we won't be called from IRQ context,
@@ -595,8 +544,6 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	if (ret < 0)
 		goto failed_cmap;
 
-	imxfb_setup_gpio(fbi);
-
 	imxfb_set_par(info);
 	ret = register_framebuffer(info);
 	if (ret < 0) {
-- 
1.5.6.3


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Re: [PATCH] i.MX Framebuffer: remove gpio setup function

[Krzysztof Helt]

On Tue,  2 Sep 2008 13:24:45 +0200
Sascha Hauer <s.hauer@pengutronix.de> wrote:

> Remove the gpio mux setup function from i.MX framebuffer driver.
> This function is platform specific and thus should be done by
> the board setup. As there are currently no in-kernel users
> of this driver we do not break anything.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---

Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl

I'll review the rest of your fb patches.

Regards,
Krzysztof

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[PATCH] i.MX Framebuffer: Use readl/writel instead of direct pointer deref

[Sascha Hauer]

From: Juergen Beisert <j.beisert@pengutronix.de>

This patch prepares the current i.MX1 framebuffer driver for usage in the
whole i.MX family. It switches to readl/writel for register accesses.
Also it moves the register definitions to the driver where they belong.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-imx/include/mach/imxfb.h |   45 ++++++++
 drivers/video/imxfb.c                  |  193 +++++++++++++++++++++-----------
 drivers/video/imxfb.h                  |    3 +-
 3 files changed, 175 insertions(+), 66 deletions(-)

diff --git a/arch/arm/mach-imx/include/mach/imxfb.h b/arch/arm/mach-imx/include/mach/imxfb.h
index 3ed9ec8..3f24f74 100644
--- a/arch/arm/mach-imx/include/mach/imxfb.h
+++ b/arch/arm/mach-imx/include/mach/imxfb.h
@@ -1,6 +1,51 @@
 /*
  * This structure describes the machine which we are running on.
  */
+
+#define PCR_TFT		(1 << 31)
+#define PCR_COLOR	(1 << 30)
+#define PCR_PBSIZ_1	(0 << 28)
+#define PCR_PBSIZ_2	(1 << 28)
+#define PCR_PBSIZ_4	(2 << 28)
+#define PCR_PBSIZ_8	(3 << 28)
+#define PCR_BPIX_1	(0 << 25)
+#define PCR_BPIX_2	(1 << 25)
+#define PCR_BPIX_4	(2 << 25)
+#define PCR_BPIX_8	(3 << 25)
+#define PCR_BPIX_12	(4 << 25)
+#define PCR_BPIX_16	(4 << 25)
+#define PCR_PIXPOL	(1 << 24)
+#define PCR_FLMPOL	(1 << 23)
+#define PCR_LPPOL	(1 << 22)
+#define PCR_CLKPOL	(1 << 21)
+#define PCR_OEPOL	(1 << 20)
+#define PCR_SCLKIDLE	(1 << 19)
+#define PCR_END_SEL	(1 << 18)
+#define PCR_END_BYTE_SWAP (1 << 17)
+#define PCR_REV_VS	(1 << 16)
+#define PCR_ACD_SEL	(1 << 15)
+#define PCR_ACD(x)	(((x) & 0x7f) << 8)
+#define PCR_SCLK_SEL	(1 << 7)
+#define PCR_SHARP	(1 << 6)
+#define PCR_PCD(x)	((x) & 0x3f)
+
+#define PWMR_CLS(x)	(((x) & 0x1ff) << 16)
+#define PWMR_LDMSK	(1 << 15)
+#define PWMR_SCR1	(1 << 10)
+#define PWMR_SCR0	(1 << 9)
+#define PWMR_CC_EN	(1 << 8)
+#define PWMR_PW(x)	((x) & 0xff)
+
+#define LSCR1_PS_RISE_DELAY(x)    (((x) & 0x7f) << 26)
+#define LSCR1_CLS_RISE_DELAY(x)   (((x) & 0x3f) << 16)
+#define LSCR1_REV_TOGGLE_DELAY(x) (((x) & 0xf) << 8)
+#define LSCR1_GRAY2(x)            (((x) & 0xf) << 4)
+#define LSCR1_GRAY1(x)            (((x) & 0xf))
+
+#define DMACR_BURST	(1 << 31)
+#define DMACR_HM(x)	(((x) & 0xf) << 16)
+#define DMACR_TM(x)	((x) & 0xf)
+
 struct imxfb_mach_info {
 	u_long		pixclock;
 
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index a990d43..1bccf5a 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -16,7 +16,6 @@
  *	linux-arm-kernel@lists.arm.linux.org.uk
  */
 
-//#define DEBUG 1
 
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -32,9 +31,8 @@
 #include <linux/cpufreq.h>
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
+#include <linux/io.h>
 
-#include <mach/hardware.h>
-#include <asm/io.h>
 #include <mach/imxfb.h>
 
 /*
@@ -44,6 +42,73 @@
 
 #include "imxfb.h"
 
+#define DRIVER_NAME "imx-fb"
+
+#define LCDC_SSA	0x00
+
+#define LCDC_SIZE	0x04
+#define SIZE_XMAX(x)	((((x) >> 4) & 0x3f) << 20)
+#define SIZE_YMAX(y)	((y) & 0x1ff)
+
+#define LCDC_VPW	0x08
+#define VPW_VPW(x)	((x) & 0x3ff)
+
+#define LCDC_CPOS	0x0C
+#define CPOS_CC1	(1<<31)
+#define CPOS_CC0	(1<<30)
+#define CPOS_OP		(1<<28)
+#define CPOS_CXP(x)	(((x) & 3ff) << 16)
+#define CPOS_CYP(y)	((y) & 0x1ff)
+
+#define LCDC_LCWHB	0x10
+#define LCWHB_BK_EN	(1<<31)
+#define LCWHB_CW(w)	(((w) & 0x1f) << 24)
+#define LCWHB_CH(h)	(((h) & 0x1f) << 16)
+#define LCWHB_BD(x)	((x) & 0xff)
+
+#define LCDC_LCHCC	0x14
+#define LCHCC_CUR_COL_R(r) (((r) & 0x1f) << 11)
+#define LCHCC_CUR_COL_G(g) (((g) & 0x3f) << 5)
+#define LCHCC_CUR_COL_B(b) ((b) & 0x1f)
+
+#define LCDC_PCR	0x18
+
+#define LCDC_HCR	0x1C
+#define HCR_H_WIDTH(x)	(((x) & 0x3f) << 26)
+#define HCR_H_WAIT_1(x)	(((x) & 0xff) << 8)
+#define HCR_H_WAIT_2(x)	((x) & 0xff)
+
+#define LCDC_VCR	0x20
+#define VCR_V_WIDTH(x)	(((x) & 0x3f) << 26)
+#define VCR_V_WAIT_1(x)	(((x) & 0xff) << 8)
+#define VCR_V_WAIT_2(x)	((x) & 0xff)
+
+#define LCDC_POS	0x24
+#define POS_POS(x)	((x) & 1f)
+
+#define LCDC_LSCR1	0x28
+/* bit fields in imxfb.h */
+
+#define LCDC_PWMR	0x2C
+/* bit fields in imxfb.h */
+
+#define LCDC_DMACR	0x30
+/* bit fields in imxfb.h */
+
+#define LCDC_RMCR	0x34
+#define RMCR_LCDC_EN	(1<<1)
+#define RMCR_SELF_REF	(1<<0)
+
+#define LCDC_LCDICR	0x38
+#define LCDICR_INT_SYN	(1<<2)
+#define LCDICR_INT_CON	(1)
+
+#define LCDC_LCDISR	0x40
+#define LCDISR_UDR_ERR	(1<<3)
+#define LCDISR_ERR_RES	(1<<2)
+#define LCDISR_EOF	(1<<1)
+#define LCDISR_BOF	(1<<0)
+
 static struct imxfb_rgb def_rgb_16 = {
 	.red	= { .offset = 8,  .length = 4, },
 	.green	= { .offset = 4,  .length = 4, },
@@ -67,7 +132,6 @@ static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 	return chan << bf->offset;
 }
 
-#define LCDC_PALETTE(x) __REG2(IMX_LCDC_BASE+0x800, (x)<<2)
 static int
 imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 		       u_int trans, struct fb_info *info)
@@ -81,7 +145,7 @@ imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 		      (CNVT_TOHW(green,4) << 4) |
 		      CNVT_TOHW(blue,  4);
 
-		LCDC_PALETTE(regno) = val;
+		writel(val, fbi->regs + 0x800 + (regno << 2));
 		ret = 0;
 	}
 	return ret;
@@ -235,18 +299,23 @@ static void imxfb_enable_controller(struct imxfb_info *fbi)
 	pr_debug("Enabling LCD controller\n");
 
 	/* initialize LCDC */
-	LCDC_RMCR &= ~RMCR_LCDC_EN;		/* just to be safe... */
+	writel(readl(fbi->regs + LCDC_RMCR) & ~RMCR_LCDC_EN,
+		fbi->regs + LCDC_RMCR);	/* just to be safe... */
+
+	writel(fbi->screen_dma, fbi->regs + LCDC_SSA);
 
-	LCDC_SSA	= fbi->screen_dma;
 	/* physical screen start address	    */
-	LCDC_VPW	= VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4);
+	writel(VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4),
+		fbi->regs + LCDC_VPW);
 
-	LCDC_POS	= 0x00000000;   /* panning offset 0 (0 pixel offset)        */
+	/* panning offset 0 (0 pixel offset)        */
+	writel(0x00000000, fbi->regs + LCDC_POS);
 
 	/* disable hardware cursor */
-	LCDC_CPOS	&= ~(CPOS_CC0 | CPOS_CC1);
+	writel(readl(fbi->regs + LCDC_CPOS) & ~(CPOS_CC0 | CPOS_CC1),
+		fbi->regs + LCDC_CPOS);
 
-	LCDC_RMCR = RMCR_LCDC_EN;
+	writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR);
 
 	if(fbi->backlight_power)
 		fbi->backlight_power(1);
@@ -263,7 +332,7 @@ static void imxfb_disable_controller(struct imxfb_info *fbi)
 	if(fbi->lcd_power)
 		fbi->lcd_power(0);
 
-	LCDC_RMCR = 0;
+	writel(0, fbi->regs + LCDC_RMCR);
 }
 
 static int imxfb_blank(int blank, struct fb_info *info)
@@ -340,19 +409,22 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 			info->fix.id, var->lower_margin);
 #endif
 
-	LCDC_HCR	= HCR_H_WIDTH(var->hsync_len) |
-	                  HCR_H_WAIT_1(var->left_margin) |
-			  HCR_H_WAIT_2(var->right_margin);
+	writel(HCR_H_WIDTH(var->hsync_len) |
+		HCR_H_WAIT_1(var->left_margin) |
+		HCR_H_WAIT_2(var->right_margin),
+		fbi->regs + LCDC_HCR);
 
-	LCDC_VCR	= VCR_V_WIDTH(var->vsync_len) |
-	                  VCR_V_WAIT_1(var->upper_margin) |
-			  VCR_V_WAIT_2(var->lower_margin);
+	writel(VCR_V_WIDTH(var->vsync_len) |
+		VCR_V_WAIT_1(var->upper_margin) |
+		VCR_V_WAIT_2(var->lower_margin),
+		fbi->regs + LCDC_VCR);
 
-	LCDC_SIZE	= SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres);
-	LCDC_PCR	= fbi->pcr;
-	LCDC_PWMR	= fbi->pwmr;
-	LCDC_LSCR1	= fbi->lscr1;
-	LCDC_DMACR	= fbi->dmacr;
+	writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres),
+			fbi->regs + LCDC_SIZE);
+	writel(fbi->pcr, fbi->regs + LCDC_PCR);
+	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+	writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
+	writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
 
 	return 0;
 }
@@ -384,10 +456,10 @@ static int imxfb_resume(struct platform_device *dev)
 #define imxfb_resume	NULL
 #endif
 
-static int __init imxfb_init_fbinfo(struct device *dev)
+static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 {
-	struct imxfb_mach_info *inf = dev->platform_data;
-	struct fb_info *info = dev_get_drvdata(dev);
+	struct imxfb_mach_info *inf = pdev->dev.platform_data;
+	struct fb_info *info = dev_get_drvdata(&pdev->dev);
 	struct imxfb_info *fbi = info->par;
 
 	pr_debug("%s\n",__func__);
@@ -397,7 +469,6 @@ static int __init imxfb_init_fbinfo(struct device *dev)
 		return -ENOMEM;
 
 	memset(fbi, 0, sizeof(struct imxfb_info));
-	fbi->dev = dev;
 
 	strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
 
@@ -453,31 +524,6 @@ static int __init imxfb_init_fbinfo(struct device *dev)
 	return 0;
 }
 
-/*
- *      Allocates the DRAM memory for the frame buffer.  This buffer is
- *	remapped into a non-cached, non-buffered, memory region to
- *      allow pixel writes to occur without flushing the cache.
- *      Once this area is remapped, all virtual memory access to the
- *      video memory should occur at the new region.
- */
-static int __init imxfb_map_video_memory(struct fb_info *info)
-{
-	struct imxfb_info *fbi = info->par;
-
-	fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
-	fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size,
-					&fbi->map_dma,GFP_KERNEL);
-
-	if (fbi->map_cpu) {
-		info->screen_base = fbi->map_cpu;
-		fbi->screen_cpu = fbi->map_cpu;
-		fbi->screen_dma = fbi->map_dma;
-		info->fix.smem_start = fbi->screen_dma;
-	}
-
-	return fbi->map_cpu ? 0 : -ENOMEM;
-}
-
 static int __init imxfb_probe(struct platform_device *pdev)
 {
 	struct imxfb_info *fbi;
@@ -506,23 +552,38 @@ static int __init imxfb_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, info);
 
-	ret = imxfb_init_fbinfo(&pdev->dev);
+	ret = imxfb_init_fbinfo(pdev);
 	if( ret < 0 )
 		goto failed_init;
 
-	res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB");
+	res = request_mem_region(res->start, resource_size(res),
+				DRIVER_NAME);
 	if (!res) {
 		ret = -EBUSY;
-		goto failed_regs;
+		goto failed_req;
+	}
+
+	fbi->regs = ioremap(res->start, resource_size(res));
+	if (fbi->regs == NULL) {
+		printk(KERN_ERR"Cannot map frame buffer registers\n");
+		goto failed_ioremap;
 	}
 
 	if (!inf->fixed_screen_cpu) {
-		ret = imxfb_map_video_memory(info);
-		if (ret) {
+		fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
+		fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
+				fbi->map_size, &fbi->map_dma, GFP_KERNEL);
+
+		if (!fbi->map_cpu) {
 			dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret);
 			ret = -ENOMEM;
 			goto failed_map;
 		}
+
+		info->screen_base = fbi->map_cpu;
+		fbi->screen_cpu = fbi->map_cpu;
+		fbi->screen_dma = fbi->map_dma;
+		info->fix.smem_start = fbi->screen_dma;
 	} else {
 		/* Fixed framebuffer mapping enables location of the screen in eSRAM */
 		fbi->map_cpu = inf->fixed_screen_cpu;
@@ -559,18 +620,20 @@ failed_register:
 failed_cmap:
 	if (!inf->fixed_screen_cpu)
 		dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu,
-		           fbi->map_dma);
+			fbi->map_dma);
 failed_map:
-	kfree(info->pseudo_palette);
-failed_regs:
+	iounmap(fbi->regs);
+failed_ioremap:
 	release_mem_region(res->start, res->end - res->start);
+failed_req:
+	kfree(info->pseudo_palette);
 failed_init:
 	platform_set_drvdata(pdev, NULL);
 	framebuffer_release(info);
 	return ret;
 }
 
-static int imxfb_remove(struct platform_device *pdev)
+static int __devexit imxfb_remove(struct platform_device *pdev)
 {
 	struct fb_info *info = platform_get_drvdata(pdev);
 	struct imxfb_info *fbi = info->par;
@@ -586,6 +649,7 @@ static int imxfb_remove(struct platform_device *pdev)
 	kfree(info->pseudo_palette);
 	framebuffer_release(info);
 
+	iounmap(fbi->regs);
 	release_mem_region(res->start, res->end - res->start + 1);
 	platform_set_drvdata(pdev, NULL);
 
@@ -600,19 +664,18 @@ void  imxfb_shutdown(struct platform_device * dev)
 }
 
 static struct platform_driver imxfb_driver = {
-	.probe		= imxfb_probe,
 	.suspend	= imxfb_suspend,
 	.resume		= imxfb_resume,
-	.remove		= imxfb_remove,
+	.remove		= __devexit_p(imxfb_remove),
 	.shutdown	= imxfb_shutdown,
 	.driver		= {
-		.name	= "imx-fb",
+		.name	= DRIVER_NAME,
 	},
 };
 
 int __init imxfb_init(void)
 {
-	return platform_driver_register(&imxfb_driver);
+	return platform_driver_probe(&imxfb_driver, imxfb_probe);
 }
 
 static void __exit imxfb_cleanup(void)
diff --git a/drivers/video/imxfb.h b/drivers/video/imxfb.h
index e837a8b..baa86a0 100644
--- a/drivers/video/imxfb.h
+++ b/drivers/video/imxfb.h
@@ -29,7 +29,8 @@ struct imxfb_rgb {
 #define NR_RGB	2
 
 struct imxfb_info {
-	struct device		*dev;
+	void __iomem		*regs;
+
 	struct imxfb_rgb	*rgb[NR_RGB];
 
 	u_int			max_bpp;
-- 
1.5.6.3


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Re: [PATCH] i.MX Framebuffer: Use readl/writel instead of direct pointer deref

[Krzysztof Helt]

On Tue,  2 Sep 2008 13:24:46 +0200
Sascha Hauer <s.hauer@pengutronix.de> wrote:

> From: Juergen Beisert <j.beisert@pengutronix.de>
> 
> This patch prepares the current i.MX1 framebuffer driver for usage in the
> whole i.MX family. It switches to readl/writel for register accesses.
> Also it moves the register definitions to the driver where they belong.
> 
> Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  arch/arm/mach-imx/include/mach/imxfb.h |   45 ++++++++
>  drivers/video/imxfb.c                  |  193 +++++++++++++++++++++-----------
>  drivers/video/imxfb.h                  |    3 +-
>  3 files changed, 175 insertions(+), 66 deletions(-)
> 

Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

One comment only - see below.

> diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
> index a990d43..1bccf5a 100644
> --- a/drivers/video/imxfb.c
> +++ b/drivers/video/imxfb.c
> @@ -506,23 +552,38 @@ static int __init imxfb_probe(struct platform_device *pdev)
>  
>  	platform_set_drvdata(pdev, info);
>  
> -	ret = imxfb_init_fbinfo(&pdev->dev);
> +	ret = imxfb_init_fbinfo(pdev);
>  	if( ret < 0 )
>  		goto failed_init;
>  
> -	res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB");
> +	res = request_mem_region(res->start, resource_size(res),
> +				DRIVER_NAME);
>  	if (!res) {
>  		ret = -EBUSY;
> -		goto failed_regs;
> +		goto failed_req;
> +	}
> +
> +	fbi->regs = ioremap(res->start, resource_size(res));
> +	if (fbi->regs == NULL) {
> +		printk(KERN_ERR"Cannot map frame buffer registers\n");
> +		goto failed_ioremap;
>  	}
>  
>  	if (!inf->fixed_screen_cpu) {
> -		ret = imxfb_map_video_memory(info);
> -		if (ret) {
> +		fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
> +		fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
> +				fbi->map_size, &fbi->map_dma, GFP_KERNEL);
> +
> +		if (!fbi->map_cpu) {
>  			dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret);
>  			ret = -ENOMEM;
>  			goto failed_map;
>  		}
> +
> +		info->screen_base = fbi->map_cpu;
> +		fbi->screen_cpu = fbi->map_cpu;
> +		fbi->screen_dma = fbi->map_dma;
> +		info->fix.smem_start = fbi->screen_dma;

It seems that fbi->screen_cpu and fbi->screen_dma are redundant
as they are always equal to info->screen_base and info->fix.smem_start.

You can kill then in some next patch.

Regards,
Krzysztof

---------------------------------------------------------------
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[PATCH] i.MX Framebuffer: fix margins

[Sascha Hauer]

The upper/lower and left/right margins are mixed up in the driver.
Fix it

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 1bccf5a..feaae73 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -410,13 +410,13 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 #endif
 
 	writel(HCR_H_WIDTH(var->hsync_len) |
-		HCR_H_WAIT_1(var->left_margin) |
-		HCR_H_WAIT_2(var->right_margin),
+		HCR_H_WAIT_1(var->right_margin) |
+		HCR_H_WAIT_2(var->left_margin),
 		fbi->regs + LCDC_HCR);
 
 	writel(VCR_V_WIDTH(var->vsync_len) |
-		VCR_V_WAIT_1(var->upper_margin) |
-		VCR_V_WAIT_2(var->lower_margin),
+		VCR_V_WAIT_1(var->lower_margin) |
+		VCR_V_WAIT_2(var->upper_margin),
 		fbi->regs + LCDC_VCR);
 
 	writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres),
-- 
1.5.6.3


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Re: [PATCH] i.MX Framebuffer: fix margins

[Krzysztof Helt]

On Tue,  2 Sep 2008 13:24:47 +0200
Sascha Hauer <s.hauer@pengutronix.de> wrote:

> The upper/lower and left/right margins are mixed up in the driver.
> Fix it
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  drivers/video/imxfb.c |    8 ++++----
>  1 files changed, 4 insertions(+), 4 deletions(-)


Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

----------------------------------------------------------------------
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[PATCH] i.MX Framebuffer: Use iowrite/ioread instead of direct pointer deref

[Sascha Hauer]

From: Juergen Beisert <j.beisert@pengutronix.de>

This patch prepares the current i.MX1 framebuffer driver for usage in the
whole i.MX family. It switches to readl/writel for register accesses.
Also it moves the register definitions to the driver where they belong.

Signed-off-by: Juergen Beisert <j.beisert@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-imx/include/mach/imxfb.h |   45 ++++++++
 drivers/video/imxfb.c                  |  192 +++++++++++++++++++++-----------
 drivers/video/imxfb.h                  |    3 +-
 3 files changed, 174 insertions(+), 66 deletions(-)

diff --git a/arch/arm/mach-imx/include/mach/imxfb.h b/arch/arm/mach-imx/include/mach/imxfb.h
index 3ed9ec8..3f24f74 100644
--- a/arch/arm/mach-imx/include/mach/imxfb.h
+++ b/arch/arm/mach-imx/include/mach/imxfb.h
@@ -1,6 +1,51 @@
 /*
  * This structure describes the machine which we are running on.
  */
+
+#define PCR_TFT		(1 << 31)
+#define PCR_COLOR	(1 << 30)
+#define PCR_PBSIZ_1	(0 << 28)
+#define PCR_PBSIZ_2	(1 << 28)
+#define PCR_PBSIZ_4	(2 << 28)
+#define PCR_PBSIZ_8	(3 << 28)
+#define PCR_BPIX_1	(0 << 25)
+#define PCR_BPIX_2	(1 << 25)
+#define PCR_BPIX_4	(2 << 25)
+#define PCR_BPIX_8	(3 << 25)
+#define PCR_BPIX_12	(4 << 25)
+#define PCR_BPIX_16	(4 << 25)
+#define PCR_PIXPOL	(1 << 24)
+#define PCR_FLMPOL	(1 << 23)
+#define PCR_LPPOL	(1 << 22)
+#define PCR_CLKPOL	(1 << 21)
+#define PCR_OEPOL	(1 << 20)
+#define PCR_SCLKIDLE	(1 << 19)
+#define PCR_END_SEL	(1 << 18)
+#define PCR_END_BYTE_SWAP (1 << 17)
+#define PCR_REV_VS	(1 << 16)
+#define PCR_ACD_SEL	(1 << 15)
+#define PCR_ACD(x)	(((x) & 0x7f) << 8)
+#define PCR_SCLK_SEL	(1 << 7)
+#define PCR_SHARP	(1 << 6)
+#define PCR_PCD(x)	((x) & 0x3f)
+
+#define PWMR_CLS(x)	(((x) & 0x1ff) << 16)
+#define PWMR_LDMSK	(1 << 15)
+#define PWMR_SCR1	(1 << 10)
+#define PWMR_SCR0	(1 << 9)
+#define PWMR_CC_EN	(1 << 8)
+#define PWMR_PW(x)	((x) & 0xff)
+
+#define LSCR1_PS_RISE_DELAY(x)    (((x) & 0x7f) << 26)
+#define LSCR1_CLS_RISE_DELAY(x)   (((x) & 0x3f) << 16)
+#define LSCR1_REV_TOGGLE_DELAY(x) (((x) & 0xf) << 8)
+#define LSCR1_GRAY2(x)            (((x) & 0xf) << 4)
+#define LSCR1_GRAY1(x)            (((x) & 0xf))
+
+#define DMACR_BURST	(1 << 31)
+#define DMACR_HM(x)	(((x) & 0xf) << 16)
+#define DMACR_TM(x)	((x) & 0xf)
+
 struct imxfb_mach_info {
 	u_long		pixclock;
 
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index bfc537f..af48044 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -16,7 +16,6 @@
  *	linux-arm-kernel@lists.arm.linux.org.uk
  */
 
-//#define DEBUG 1
 
 #include <linux/module.h>
 #include <linux/kernel.h>
@@ -33,10 +32,8 @@
 #include <linux/platform_device.h>
 #include <linux/dma-mapping.h>
 
-#include <mach/hardware.h>
 #include <asm/io.h>
 #include <mach/imxfb.h>
-#include <mach/imx-regs.h>
 
 /*
  * Complain if VAR is out of range.
@@ -45,6 +42,73 @@
 
 #include "imxfb.h"
 
+#define DRIVER_NAME "imx-fb"
+
+#define LCDC_SSA	0x00
+
+#define LCDC_SIZE	0x04
+#define SIZE_XMAX(x)	((((x) >> 4) & 0x3f) << 20)
+#define SIZE_YMAX(y)	((y) & 0x1ff)
+
+#define LCDC_VPW	0x08
+#define VPW_VPW(x)	((x) & 0x3ff)
+
+#define LCDC_CPOS	0x0C
+#define CPOS_CC1	(1<<31)
+#define CPOS_CC0	(1<<30)
+#define CPOS_OP		(1<<28)
+#define CPOS_CXP(x)	(((x) & 3ff) << 16)
+#define CPOS_CYP(y)	((y) & 0x1ff)
+
+#define LCDC_LCWHB	0x10
+#define LCWHB_BK_EN	(1<<31)
+#define LCWHB_CW(w)	(((w) & 0x1f) << 24)
+#define LCWHB_CH(h)	(((h) & 0x1f) << 16)
+#define LCWHB_BD(x)	((x) & 0xff)
+
+#define LCDC_LCHCC	0x14
+#define LCHCC_CUR_COL_R(r) (((r) & 0x1f) << 11)
+#define LCHCC_CUR_COL_G(g) (((g) & 0x3f) << 5)
+#define LCHCC_CUR_COL_B(b) ((b) & 0x1f)
+
+#define LCDC_PCR	0x18
+
+#define LCDC_HCR	0x1C
+#define HCR_H_WIDTH(x)	(((x) & 0x3f) << 26)
+#define HCR_H_WAIT_1(x)	(((x) & 0xff) << 8)
+#define HCR_H_WAIT_2(x)	((x) & 0xff)
+
+#define LCDC_VCR	0x20
+#define VCR_V_WIDTH(x)	(((x) & 0x3f) << 26)
+#define VCR_V_WAIT_1(x)	(((x) & 0xff) << 8)
+#define VCR_V_WAIT_2(x)	((x) & 0xff)
+
+#define LCDC_POS	0x24
+#define POS_POS(x)	((x) & 1f)
+
+#define LCDC_LSCR1	0x28
+/* bit fields in imxfb.h */
+
+#define LCDC_PWMR	0x2C
+/* bit fields in imxfb.h */
+
+#define LCDC_DMACR	0x30
+/* bit fields in imxfb.h */
+
+#define LCDC_RMCR	0x34
+#define RMCR_LCDC_EN	(1<<1)
+#define RMCR_SELF_REF	(1<<0)
+
+#define LCDC_LCDICR	0x38
+#define LCDICR_INT_SYN	(1<<2)
+#define LCDICR_INT_CON	(1)
+
+#define LCDC_LCDISR	0x40
+#define LCDISR_UDR_ERR	(1<<3)
+#define LCDISR_ERR_RES	(1<<2)
+#define LCDISR_EOF	(1<<1)
+#define LCDISR_BOF	(1<<0)
+
 static struct imxfb_rgb def_rgb_16 = {
 	.red	= { .offset = 8,  .length = 4, },
 	.green	= { .offset = 4,  .length = 4, },
@@ -68,7 +132,6 @@ static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 	return chan << bf->offset;
 }
 
-#define LCDC_PALETTE(x) __REG2(IMX_LCDC_BASE+0x800, (x)<<2)
 static int
 imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 		       u_int trans, struct fb_info *info)
@@ -82,7 +145,7 @@ imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 		      (CNVT_TOHW(green,4) << 4) |
 		      CNVT_TOHW(blue,  4);
 
-		LCDC_PALETTE(regno) = val;
+		writel(val, fbi->regs + 0x800 + (regno << 2));
 		ret = 0;
 	}
 	return ret;
@@ -236,18 +299,23 @@ static void imxfb_enable_controller(struct imxfb_info *fbi)
 	pr_debug("Enabling LCD controller\n");
 
 	/* initialize LCDC */
-	LCDC_RMCR &= ~RMCR_LCDC_EN;		/* just to be safe... */
+	writel(readl(fbi->regs + LCDC_RMCR) & ~RMCR_LCDC_EN,
+		fbi->regs + LCDC_RMCR);	/* just to be safe... */
+
+	writel(fbi->screen_dma, fbi->regs + LCDC_SSA);
 
-	LCDC_SSA	= fbi->screen_dma;
 	/* physical screen start address	    */
-	LCDC_VPW	= VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4);
+	writel(VPW_VPW(fbi->max_xres * fbi->max_bpp / 8 / 4),
+		fbi->regs + LCDC_VPW);
 
-	LCDC_POS	= 0x00000000;   /* panning offset 0 (0 pixel offset)        */
+	/* panning offset 0 (0 pixel offset)        */
+	writel(0x00000000, fbi->regs + LCDC_POS);
 
 	/* disable hardware cursor */
-	LCDC_CPOS	&= ~(CPOS_CC0 | CPOS_CC1);
+	writel(readl(fbi->regs + LCDC_CPOS) & ~(CPOS_CC0 | CPOS_CC1),
+		fbi->regs + LCDC_CPOS);
 
-	LCDC_RMCR = RMCR_LCDC_EN;
+	writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR);
 
 	if(fbi->backlight_power)
 		fbi->backlight_power(1);
@@ -264,7 +332,7 @@ static void imxfb_disable_controller(struct imxfb_info *fbi)
 	if(fbi->lcd_power)
 		fbi->lcd_power(0);
 
-	LCDC_RMCR = 0;
+	writel(0, fbi->regs + LCDC_RMCR);
 }
 
 static int imxfb_blank(int blank, struct fb_info *info)
@@ -341,19 +409,22 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 			info->fix.id, var->lower_margin);
 #endif
 
-	LCDC_HCR	= HCR_H_WIDTH(var->hsync_len) |
-	                  HCR_H_WAIT_1(var->left_margin) |
-			  HCR_H_WAIT_2(var->right_margin);
+	writel(HCR_H_WIDTH(var->hsync_len) |
+		HCR_H_WAIT_1(var->left_margin) |
+		HCR_H_WAIT_2(var->right_margin),
+		fbi->regs + LCDC_HCR);
 
-	LCDC_VCR	= VCR_V_WIDTH(var->vsync_len) |
-	                  VCR_V_WAIT_1(var->upper_margin) |
-			  VCR_V_WAIT_2(var->lower_margin);
+	writel(VCR_V_WIDTH(var->vsync_len) |
+		VCR_V_WAIT_1(var->upper_margin) |
+		VCR_V_WAIT_2(var->lower_margin),
+		fbi->regs + LCDC_VCR);
 
-	LCDC_SIZE	= SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres);
-	LCDC_PCR	= fbi->pcr;
-	LCDC_PWMR	= fbi->pwmr;
-	LCDC_LSCR1	= fbi->lscr1;
-	LCDC_DMACR	= fbi->dmacr;
+	writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres),
+			fbi->regs + LCDC_SIZE);
+	writel(fbi->pcr, fbi->regs + LCDC_PCR);
+	writel(fbi->pwmr, fbi->regs + LCDC_PWMR);
+	writel(fbi->lscr1, fbi->regs + LCDC_LSCR1);
+	writel(fbi->dmacr, fbi->regs + LCDC_DMACR);
 
 	return 0;
 }
@@ -385,10 +456,10 @@ static int imxfb_resume(struct platform_device *dev)
 #define imxfb_resume	NULL
 #endif
 
-static int __init imxfb_init_fbinfo(struct device *dev)
+static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 {
-	struct imxfb_mach_info *inf = dev->platform_data;
-	struct fb_info *info = dev_get_drvdata(dev);
+	struct imxfb_mach_info *inf = pdev->dev.platform_data;
+	struct fb_info *info = dev_get_drvdata(&pdev->dev);
 	struct imxfb_info *fbi = info->par;
 
 	pr_debug("%s\n",__func__);
@@ -398,7 +469,6 @@ static int __init imxfb_init_fbinfo(struct device *dev)
 		return -ENOMEM;
 
 	memset(fbi, 0, sizeof(struct imxfb_info));
-	fbi->dev = dev;
 
 	strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
 
@@ -454,31 +524,6 @@ static int __init imxfb_init_fbinfo(struct device *dev)
 	return 0;
 }
 
-/*
- *      Allocates the DRAM memory for the frame buffer.  This buffer is
- *	remapped into a non-cached, non-buffered, memory region to
- *      allow pixel writes to occur without flushing the cache.
- *      Once this area is remapped, all virtual memory access to the
- *      video memory should occur at the new region.
- */
-static int __init imxfb_map_video_memory(struct fb_info *info)
-{
-	struct imxfb_info *fbi = info->par;
-
-	fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
-	fbi->map_cpu = dma_alloc_writecombine(fbi->dev, fbi->map_size,
-					&fbi->map_dma,GFP_KERNEL);
-
-	if (fbi->map_cpu) {
-		info->screen_base = fbi->map_cpu;
-		fbi->screen_cpu = fbi->map_cpu;
-		fbi->screen_dma = fbi->map_dma;
-		info->fix.smem_start = fbi->screen_dma;
-	}
-
-	return fbi->map_cpu ? 0 : -ENOMEM;
-}
-
 static int __init imxfb_probe(struct platform_device *pdev)
 {
 	struct imxfb_info *fbi;
@@ -507,23 +552,38 @@ static int __init imxfb_probe(struct platform_device *pdev)
 
 	platform_set_drvdata(pdev, info);
 
-	ret = imxfb_init_fbinfo(&pdev->dev);
+	ret = imxfb_init_fbinfo(pdev);
 	if( ret < 0 )
 		goto failed_init;
 
-	res = request_mem_region(res->start, res->end - res->start + 1, "IMXFB");
+	res = request_mem_region(res->start, resource_size(res),
+				DRIVER_NAME);
 	if (!res) {
 		ret = -EBUSY;
-		goto failed_regs;
+		goto failed_req;
+	}
+
+	fbi->regs = ioremap(res->start, resource_size(res));
+	if (fbi->regs == NULL) {
+		printk(KERN_ERR"Cannot map frame buffer registers\n");
+		goto failed_ioremap;
 	}
 
 	if (!inf->fixed_screen_cpu) {
-		ret = imxfb_map_video_memory(info);
-		if (ret) {
+		fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
+		fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
+				fbi->map_size, &fbi->map_dma, GFP_KERNEL);
+
+		if (!fbi->map_cpu) {
 			dev_err(&pdev->dev, "Failed to allocate video RAM: %d\n", ret);
 			ret = -ENOMEM;
 			goto failed_map;
 		}
+
+		info->screen_base = fbi->map_cpu;
+		fbi->screen_cpu = fbi->map_cpu;
+		fbi->screen_dma = fbi->map_dma;
+		info->fix.smem_start = fbi->screen_dma;
 	} else {
 		/* Fixed framebuffer mapping enables location of the screen in eSRAM */
 		fbi->map_cpu = inf->fixed_screen_cpu;
@@ -560,18 +620,20 @@ failed_register:
 failed_cmap:
 	if (!inf->fixed_screen_cpu)
 		dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu,
-		           fbi->map_dma);
+			fbi->map_dma);
 failed_map:
-	kfree(info->pseudo_palette);
-failed_regs:
+	iounmap(fbi->regs);
+failed_ioremap:
 	release_mem_region(res->start, res->end - res->start);
+failed_req:
+	kfree(info->pseudo_palette);
 failed_init:
 	platform_set_drvdata(pdev, NULL);
 	framebuffer_release(info);
 	return ret;
 }
 
-static int imxfb_remove(struct platform_device *pdev)
+static int __devexit imxfb_remove(struct platform_device *pdev)
 {
 	struct fb_info *info = platform_get_drvdata(pdev);
 	struct imxfb_info *fbi = info->par;
@@ -587,6 +649,7 @@ static int imxfb_remove(struct platform_device *pdev)
 	kfree(info->pseudo_palette);
 	framebuffer_release(info);
 
+	iounmap(fbi->regs);
 	release_mem_region(res->start, res->end - res->start + 1);
 	platform_set_drvdata(pdev, NULL);
 
@@ -601,19 +664,18 @@ void  imxfb_shutdown(struct platform_device * dev)
 }
 
 static struct platform_driver imxfb_driver = {
-	.probe		= imxfb_probe,
 	.suspend	= imxfb_suspend,
 	.resume		= imxfb_resume,
-	.remove		= imxfb_remove,
+	.remove		= __devexit_p(imxfb_remove),
 	.shutdown	= imxfb_shutdown,
 	.driver		= {
-		.name	= "imx-fb",
+		.name	= DRIVER_NAME,
 	},
 };
 
 int __init imxfb_init(void)
 {
-	return platform_driver_register(&imxfb_driver);
+	return platform_driver_probe(&imxfb_driver, imxfb_probe);
 }
 
 static void __exit imxfb_cleanup(void)
diff --git a/drivers/video/imxfb.h b/drivers/video/imxfb.h
index e837a8b..baa86a0 100644
--- a/drivers/video/imxfb.h
+++ b/drivers/video/imxfb.h
@@ -29,7 +29,8 @@ struct imxfb_rgb {
 #define NR_RGB	2
 
 struct imxfb_info {
-	struct device		*dev;
+	void __iomem		*regs;
+
 	struct imxfb_rgb	*rgb[NR_RGB];
 
 	u_int			max_bpp;
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: fix margins

[Sascha Hauer]

The upper/lower and left/right margins are mixed up in the driver.
Fix it

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index af48044..c62e9d4 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -410,13 +410,13 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 #endif
 
 	writel(HCR_H_WIDTH(var->hsync_len) |
-		HCR_H_WAIT_1(var->left_margin) |
-		HCR_H_WAIT_2(var->right_margin),
+		HCR_H_WAIT_1(var->right_margin) |
+		HCR_H_WAIT_2(var->left_margin),
 		fbi->regs + LCDC_HCR);
 
 	writel(VCR_V_WIDTH(var->vsync_len) |
-		VCR_V_WAIT_1(var->upper_margin) |
-		VCR_V_WAIT_2(var->lower_margin),
+		VCR_V_WAIT_1(var->lower_margin) |
+		VCR_V_WAIT_2(var->upper_margin),
 		fbi->regs + LCDC_VCR);
 
 	writel(SIZE_XMAX(var->xres) | SIZE_YMAX(var->yres),
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: remove header file

[Sascha Hauer]

Move contents of imxfb.h to imxfb.c since it is used only
in this file

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   62 +++++++++++++++++++++++++++++++++++++++-
 drivers/video/imxfb.h |   74 -------------------------------------------------
 2 files changed, 60 insertions(+), 76 deletions(-)
 delete mode 100644 drivers/video/imxfb.h

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index feaae73..7b3400c 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -40,8 +40,6 @@
  */
 #define DEBUG_VAR 1
 
-#include "imxfb.h"
-
 #define DRIVER_NAME "imx-fb"
 
 #define LCDC_SSA	0x00
@@ -109,6 +107,66 @@
 #define LCDISR_EOF	(1<<1)
 #define LCDISR_BOF	(1<<0)
 
+/*
+ * These are the bitfields for each
+ * display depth that we support.
+ */
+struct imxfb_rgb {
+	struct fb_bitfield	red;
+	struct fb_bitfield	green;
+	struct fb_bitfield	blue;
+	struct fb_bitfield	transp;
+};
+
+#define RGB_16	(0)
+#define RGB_8	(1)
+#define NR_RGB	2
+
+struct imxfb_info {
+	struct platform_device  *pdev;
+	void __iomem		*regs;
+
+	struct imxfb_rgb	*rgb[NR_RGB];
+
+	u_int			max_bpp;
+	u_int			max_xres;
+	u_int			max_yres;
+
+	/*
+	 * These are the addresses we mapped
+	 * the framebuffer memory region to.
+	 */
+	dma_addr_t		map_dma;
+	u_char			*map_cpu;
+	u_int			map_size;
+
+	u_char			*screen_cpu;
+	dma_addr_t		screen_dma;
+	u_int			palette_size;
+
+	dma_addr_t		dbar1;
+	dma_addr_t		dbar2;
+
+	u_int			pcr;
+	u_int			pwmr;
+	u_int			lscr1;
+	u_int			dmacr;
+	u_int			cmap_inverse:1,
+				cmap_static:1,
+				unused:30;
+
+	void (*lcd_power)(int);
+	void (*backlight_power)(int);
+};
+
+#define IMX_NAME	"IMX"
+
+/*
+ * Minimum X and Y resolutions
+ */
+#define MIN_XRES	64
+#define MIN_YRES	64
+
 static struct imxfb_rgb def_rgb_16 = {
 	.red	= { .offset = 8,  .length = 4, },
 	.green	= { .offset = 4,  .length = 4, },
diff --git a/drivers/video/imxfb.h b/drivers/video/imxfb.h
deleted file mode 100644
index baa86a0..0000000
--- a/drivers/video/imxfb.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * linux/drivers/video/imxfb.h
- *
- *  Freescale i.MX Frame Buffer device driver
- *
- *  Copyright (C) 2004 S.Hauer, Pengutronix
- *
- *  Copyright (C) 1999 Eric A. Thomas
- *   Based on acornfb.c Copyright (C) Russell King.
- *
- * 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 more details.
- */
-
-/*
- * These are the bitfields for each
- * display depth that we support.
- */
-struct imxfb_rgb {
-	struct fb_bitfield	red;
-	struct fb_bitfield	green;
-	struct fb_bitfield	blue;
-	struct fb_bitfield	transp;
-};
-
-#define RGB_16	(0)
-#define RGB_8	(1)
-#define NR_RGB	2
-
-struct imxfb_info {
-	void __iomem		*regs;
-
-	struct imxfb_rgb	*rgb[NR_RGB];
-
-	u_int			max_bpp;
-	u_int			max_xres;
-	u_int			max_yres;
-
-	/*
-	 * These are the addresses we mapped
-	 * the framebuffer memory region to.
-	 */
-	dma_addr_t		map_dma;
-	u_char *		map_cpu;
-	u_int			map_size;
-
-	u_char *		screen_cpu;
-	dma_addr_t		screen_dma;
-	u_int			palette_size;
-
-	dma_addr_t		dbar1;
-	dma_addr_t		dbar2;
-
-	u_int			pcr;
-	u_int			pwmr;
-	u_int			lscr1;
-	u_int			dmacr;
-	u_int			cmap_inverse:1,
-				cmap_static:1,
-				unused:30;
-
-	void (*lcd_power)(int);
-	void (*backlight_power)(int);
-};
-
-#define IMX_NAME	"IMX"
-
-/*
- * Minimum X and Y resolutions
- */
-#define MIN_XRES	64
-#define MIN_YRES	64
-
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: Cleanup Coding style

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   70 +++++++++++++++++++++++-------------------------
 1 files changed, 34 insertions(+), 36 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 7b3400c..25323ea 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -1,6 +1,4 @@
 /*
- *  linux/drivers/video/imxfb.c
- *
  *  Freescale i.MX Frame Buffer device driver
  *
  *  Copyright (C) 2004 Sascha Hauer, Pengutronix
@@ -168,20 +166,21 @@ struct imxfb_info {
 #define MIN_YRES	64
 
 static struct imxfb_rgb def_rgb_16 = {
-	.red	= { .offset = 8,  .length = 4, },
-	.green	= { .offset = 4,  .length = 4, },
-	.blue	= { .offset = 0,  .length = 4, },
-	.transp = { .offset = 0,  .length = 0, },
+	.red	= {.offset = 8, .length = 4,},
+	.green	= {.offset = 4, .length = 4,},
+	.blue	= {.offset = 0, .length = 4,},
+	.transp = {.offset = 0, .length = 0,},
 };
 
 static struct imxfb_rgb def_rgb_8 = {
-	.red	= { .offset = 0,  .length = 8, },
-	.green	= { .offset = 0,  .length = 8, },
-	.blue	= { .offset = 0,  .length = 8, },
-	.transp = { .offset = 0,  .length = 0, },
+	.red	= {.offset = 0, .length = 8,},
+	.green	= {.offset = 0, .length = 8,},
+	.blue	= {.offset = 0, .length = 8,},
+	.transp = {.offset = 0, .length = 0,},
 };
 
-static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info);
+static int imxfb_activate_var(struct fb_var_screeninfo *var,
+		struct fb_info *info);
 
 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 {
@@ -190,9 +189,8 @@ static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 	return chan << bf->offset;
 }
 
-static int
-imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
-		       u_int trans, struct fb_info *info)
+static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
+		u_int trans, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
 	u_int val, ret = 1;
@@ -209,8 +207,7 @@ imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 	return ret;
 }
 
-static int
-imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 		   u_int trans, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
@@ -270,8 +267,7 @@ imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
  *    yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
  *    bitfields, horizontal timing, vertical timing.
  */
-static int
-imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
 	int rgbidx;
@@ -343,8 +339,7 @@ static int imxfb_set_par(struct fb_info *info)
 		info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
 	}
 
-	info->fix.line_length = var->xres_virtual *
-				  var->bits_per_pixel / 8;
+	info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8;
 	fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
 
 	imxfb_activate_var(var, info);
@@ -375,9 +370,9 @@ static void imxfb_enable_controller(struct imxfb_info *fbi)
 
 	writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR);
 
-	if(fbi->backlight_power)
+	if (fbi->backlight_power)
 		fbi->backlight_power(1);
-	if(fbi->lcd_power)
+	if (fbi->lcd_power)
 		fbi->lcd_power(1);
 }
 
@@ -385,9 +380,9 @@ static void imxfb_disable_controller(struct imxfb_info *fbi)
 {
 	pr_debug("Disabling LCD controller\n");
 
-	if(fbi->backlight_power)
+	if (fbi->backlight_power)
 		fbi->backlight_power(0);
-	if(fbi->lcd_power)
+	if (fbi->lcd_power)
 		fbi->lcd_power(0);
 
 	writel(0, fbi->regs + LCDC_RMCR);
@@ -495,7 +490,8 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
 {
 	struct imxfb_info *fbi = platform_get_drvdata(dev);
-	pr_debug("%s\n",__func__);
+
+	pr_debug("%s\n", __func__);
 
 	imxfb_disable_controller(fbi);
 	return 0;
@@ -504,7 +500,8 @@ static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
 static int imxfb_resume(struct platform_device *dev)
 {
 	struct imxfb_info *fbi = platform_get_drvdata(dev);
-	pr_debug("%s\n",__func__);
+
+	pr_debug("%s\n", __func__);
 
 	imxfb_enable_controller(fbi);
 	return 0;
@@ -522,7 +519,7 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 
 	pr_debug("%s\n",__func__);
 
-	info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL);
+	info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
 	if (!info->pseudo_palette)
 		return -ENOMEM;
 
@@ -530,22 +527,23 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 
 	strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
 
-	info->fix.type	= FB_TYPE_PACKED_PIXELS;
+	info->fix.type			= FB_TYPE_PACKED_PIXELS;
 	info->fix.type_aux		= 0;
 	info->fix.xpanstep		= 0;
 	info->fix.ypanstep		= 0;
 	info->fix.ywrapstep		= 0;
-	info->fix.accel	= FB_ACCEL_NONE;
+	info->fix.accel			= FB_ACCEL_NONE;
 
 	info->var.nonstd		= 0;
 	info->var.activate		= FB_ACTIVATE_NOW;
 	info->var.height		= -1;
 	info->var.width	= -1;
 	info->var.accel_flags		= 0;
-	info->var.vmode	= FB_VMODE_NONINTERLACED;
+	info->var.vmode			= FB_VMODE_NONINTERLACED;
 
 	info->fbops			= &imxfb_ops;
-	info->flags			= FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST;
+	info->flags			= FBINFO_FLAG_DEFAULT |
+					  FBINFO_READS_FAST;
 
 	fbi->rgb[RGB_16]		= &def_rgb_16;
 	fbi->rgb[RGB_8]			= &def_rgb_8;
@@ -593,17 +591,17 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	printk("i.MX Framebuffer driver\n");
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if(!res)
+	if (!res)
 		return -ENODEV;
 
 	inf = pdev->dev.platform_data;
-	if(!inf) {
+	if (!inf) {
 		dev_err(&pdev->dev,"No platform_data available\n");
 		return -ENOMEM;
 	}
 
 	info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev);
-	if(!info)
+	if (!info)
 		return -ENOMEM;
 
 	fbi = info->par;
@@ -611,7 +609,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, info);
 
 	ret = imxfb_init_fbinfo(pdev);
-	if( ret < 0 )
+	if (ret < 0)
 		goto failed_init;
 
 	res = request_mem_region(res->start, resource_size(res),
@@ -658,7 +656,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	 */
 	imxfb_check_var(&info->var, info);
 
-	ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
+	ret = fb_alloc_cmap(&info->cmap, 1 << info->var.bits_per_pixel, 0);
 	if (ret < 0)
 		goto failed_cmap;
 
-- 
1.5.6.3


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Re: [PATCH] i.MX Framebuffer: Cleanup Coding style

[Krzysztof Helt]

On Tue,  2 Sep 2008 13:24:51 +0200
Sascha Hauer <s.hauer@pengutronix.de> wrote:

> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  drivers/video/imxfb.c |   70 +++++++++++++++++++++++-------------------------
>  1 files changed, 34 insertions(+), 36 deletions(-)
> 

Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

One offtopic comment: do you really want the FBINFO_READS_FAST set?

It means that the driver prefer copyarea to imgblit function. It is
usually slower on most drivers (opposite on chips with attached
very fast memory: 3Dfx, GeForce, probably new ATI chips as well).

Please test your driver with and without this option if possible.

Kind regards,
Krzysztof

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Re: [PATCH] i.MX Framebuffer: Cleanup Coding style

[Sascha Hauer]

On Wed, Sep 03, 2008 at 09:19:17PM +0200, Krzysztof Helt wrote:
> On Tue,  2 Sep 2008 13:24:51 +0200
> Sascha Hauer <s.hauer@pengutronix.de> wrote:
> 
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> >  drivers/video/imxfb.c |   70 +++++++++++++++++++++++-------------------------
> >  1 files changed, 34 insertions(+), 36 deletions(-)
> > 
> 
> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
> 
> One offtopic comment: do you really want the FBINFO_READS_FAST set?
> 
> It means that the driver prefer copyarea to imgblit function. It is
> usually slower on most drivers (opposite on chips with attached
> very fast memory: 3Dfx, GeForce, probably new ATI chips as well).
> 
> Please test your driver with and without this option if possible.

I'll keep that in mind and test it. I'm sure this flag never went in on
purpose, it went in with copy-paste.

Regards,
 Sascha

-- 
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Re: [PATCH] i.MX Framebuffer: Cleanup Coding style

[Juergen Beisert]

On Mittwoch, 3. September 2008, Krzysztof Helt wrote:
> On Tue,  2 Sep 2008 13:24:51 +0200
>
> Sascha Hauer <s.hauer@pengutronix.de> wrote:
> > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> > ---
> >  drivers/video/imxfb.c |   70
> > +++++++++++++++++++++++------------------------- 1 files changed, 34
> > insertions(+), 36 deletions(-)
>
> Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>
>
> One offtopic comment: do you really want the FBINFO_READS_FAST set?
>
> It means that the driver prefer copyarea to imgblit function. It is

Did you ever get the framework to use the copyarea function the driver 
provides? I tried it several times and this function was never called. 
Independent from any flags I set or clear.

jbe

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[PATCH] i.MX Framebuffer: remove header file

[Sascha Hauer]

Move contents of imxfb.h to imxfb.c since it is used only
in this file

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   62 +++++++++++++++++++++++++++++++++++++++-
 drivers/video/imxfb.h |   74 -------------------------------------------------
 2 files changed, 60 insertions(+), 76 deletions(-)
 delete mode 100644 drivers/video/imxfb.h

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index c62e9d4..7de3796 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -40,8 +40,6 @@
  */
 #define DEBUG_VAR 1
 
-#include "imxfb.h"
-
 #define DRIVER_NAME "imx-fb"
 
 #define LCDC_SSA	0x00
@@ -109,6 +107,66 @@
 #define LCDISR_EOF	(1<<1)
 #define LCDISR_BOF	(1<<0)
 
+/*
+ * These are the bitfields for each
+ * display depth that we support.
+ */
+struct imxfb_rgb {
+	struct fb_bitfield	red;
+	struct fb_bitfield	green;
+	struct fb_bitfield	blue;
+	struct fb_bitfield	transp;
+};
+
+#define RGB_16	(0)
+#define RGB_8	(1)
+#define NR_RGB	2
+
+struct imxfb_info {
+	struct platform_device  *pdev;
+	void __iomem		*regs;
+
+	struct imxfb_rgb	*rgb[NR_RGB];
+
+	u_int			max_bpp;
+	u_int			max_xres;
+	u_int			max_yres;
+
+	/*
+	 * These are the addresses we mapped
+	 * the framebuffer memory region to.
+	 */
+	dma_addr_t		map_dma;
+	u_char			*map_cpu;
+	u_int			map_size;
+
+	u_char			*screen_cpu;
+	dma_addr_t		screen_dma;
+	u_int			palette_size;
+
+	dma_addr_t		dbar1;
+	dma_addr_t		dbar2;
+
+	u_int			pcr;
+	u_int			pwmr;
+	u_int			lscr1;
+	u_int			dmacr;
+	u_int			cmap_inverse:1,
+				cmap_static:1,
+				unused:30;
+
+	void (*lcd_power)(int);
+	void (*backlight_power)(int);
+};
+
+#define IMX_NAME	"IMX"
+
+/*
+ * Minimum X and Y resolutions
+ */
+#define MIN_XRES	64
+#define MIN_YRES	64
+
 static struct imxfb_rgb def_rgb_16 = {
 	.red	= { .offset = 8,  .length = 4, },
 	.green	= { .offset = 4,  .length = 4, },
diff --git a/drivers/video/imxfb.h b/drivers/video/imxfb.h
deleted file mode 100644
index baa86a0..0000000
--- a/drivers/video/imxfb.h
+++ /dev/null
@@ -1,74 +0,0 @@
-/*
- * linux/drivers/video/imxfb.h
- *
- *  Freescale i.MX Frame Buffer device driver
- *
- *  Copyright (C) 2004 S.Hauer, Pengutronix
- *
- *  Copyright (C) 1999 Eric A. Thomas
- *   Based on acornfb.c Copyright (C) Russell King.
- *
- * 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 more details.
- */
-
-/*
- * These are the bitfields for each
- * display depth that we support.
- */
-struct imxfb_rgb {
-	struct fb_bitfield	red;
-	struct fb_bitfield	green;
-	struct fb_bitfield	blue;
-	struct fb_bitfield	transp;
-};
-
-#define RGB_16	(0)
-#define RGB_8	(1)
-#define NR_RGB	2
-
-struct imxfb_info {
-	void __iomem		*regs;
-
-	struct imxfb_rgb	*rgb[NR_RGB];
-
-	u_int			max_bpp;
-	u_int			max_xres;
-	u_int			max_yres;
-
-	/*
-	 * These are the addresses we mapped
-	 * the framebuffer memory region to.
-	 */
-	dma_addr_t		map_dma;
-	u_char *		map_cpu;
-	u_int			map_size;
-
-	u_char *		screen_cpu;
-	dma_addr_t		screen_dma;
-	u_int			palette_size;
-
-	dma_addr_t		dbar1;
-	dma_addr_t		dbar2;
-
-	u_int			pcr;
-	u_int			pwmr;
-	u_int			lscr1;
-	u_int			dmacr;
-	u_int			cmap_inverse:1,
-				cmap_static:1,
-				unused:30;
-
-	void (*lcd_power)(int);
-	void (*backlight_power)(int);
-};
-
-#define IMX_NAME	"IMX"
-
-/*
- * Minimum X and Y resolutions
- */
-#define MIN_XRES	64
-#define MIN_YRES	64
-
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: Cleanup Coding style

[Sascha Hauer]

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   70 +++++++++++++++++++++++-------------------------
 1 files changed, 34 insertions(+), 36 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 7de3796..00c7560 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -1,6 +1,4 @@
 /*
- *  linux/drivers/video/imxfb.c
- *
  *  Freescale i.MX Frame Buffer device driver
  *
  *  Copyright (C) 2004 Sascha Hauer, Pengutronix
@@ -168,20 +166,21 @@ struct imxfb_info {
 #define MIN_YRES	64
 
 static struct imxfb_rgb def_rgb_16 = {
-	.red	= { .offset = 8,  .length = 4, },
-	.green	= { .offset = 4,  .length = 4, },
-	.blue	= { .offset = 0,  .length = 4, },
-	.transp = { .offset = 0,  .length = 0, },
+	.red	= {.offset = 8, .length = 4,},
+	.green	= {.offset = 4, .length = 4,},
+	.blue	= {.offset = 0, .length = 4,},
+	.transp = {.offset = 0, .length = 0,},
 };
 
 static struct imxfb_rgb def_rgb_8 = {
-	.red	= { .offset = 0,  .length = 8, },
-	.green	= { .offset = 0,  .length = 8, },
-	.blue	= { .offset = 0,  .length = 8, },
-	.transp = { .offset = 0,  .length = 0, },
+	.red	= {.offset = 0, .length = 8,},
+	.green	= {.offset = 0, .length = 8,},
+	.blue	= {.offset = 0, .length = 8,},
+	.transp = {.offset = 0, .length = 0,},
 };
 
-static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *info);
+static int imxfb_activate_var(struct fb_var_screeninfo *var,
+		struct fb_info *info);
 
 static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 {
@@ -190,9 +189,8 @@ static inline u_int chan_to_field(u_int chan, struct fb_bitfield *bf)
 	return chan << bf->offset;
 }
 
-static int
-imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
-		       u_int trans, struct fb_info *info)
+static int imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
+		u_int trans, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
 	u_int val, ret = 1;
@@ -209,8 +207,7 @@ imxfb_setpalettereg(u_int regno, u_int red, u_int green, u_int blue,
 	return ret;
 }
 
-static int
-imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
+static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 		   u_int trans, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
@@ -270,8 +267,7 @@ imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
  *    yres, xres_virtual, yres_virtual, xoffset, yoffset, grayscale,
  *    bitfields, horizontal timing, vertical timing.
  */
-static int
-imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
+static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
 	int rgbidx;
@@ -343,8 +339,7 @@ static int imxfb_set_par(struct fb_info *info)
 		info->fix.visual = FB_VISUAL_STATIC_PSEUDOCOLOR;
 	}
 
-	info->fix.line_length = var->xres_virtual *
-				  var->bits_per_pixel / 8;
+	info->fix.line_length = var->xres_virtual * var->bits_per_pixel / 8;
 	fbi->palette_size = var->bits_per_pixel == 8 ? 256 : 16;
 
 	imxfb_activate_var(var, info);
@@ -375,9 +370,9 @@ static void imxfb_enable_controller(struct imxfb_info *fbi)
 
 	writel(RMCR_LCDC_EN, fbi->regs + LCDC_RMCR);
 
-	if(fbi->backlight_power)
+	if (fbi->backlight_power)
 		fbi->backlight_power(1);
-	if(fbi->lcd_power)
+	if (fbi->lcd_power)
 		fbi->lcd_power(1);
 }
 
@@ -385,9 +380,9 @@ static void imxfb_disable_controller(struct imxfb_info *fbi)
 {
 	pr_debug("Disabling LCD controller\n");
 
-	if(fbi->backlight_power)
+	if (fbi->backlight_power)
 		fbi->backlight_power(0);
-	if(fbi->lcd_power)
+	if (fbi->lcd_power)
 		fbi->lcd_power(0);
 
 	writel(0, fbi->regs + LCDC_RMCR);
@@ -495,7 +490,8 @@ static int imxfb_activate_var(struct fb_var_screeninfo *var, struct fb_info *inf
 static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
 {
 	struct imxfb_info *fbi = platform_get_drvdata(dev);
-	pr_debug("%s\n",__func__);
+
+	pr_debug("%s\n", __func__);
 
 	imxfb_disable_controller(fbi);
 	return 0;
@@ -504,7 +500,8 @@ static int imxfb_suspend(struct platform_device *dev, pm_message_t state)
 static int imxfb_resume(struct platform_device *dev)
 {
 	struct imxfb_info *fbi = platform_get_drvdata(dev);
-	pr_debug("%s\n",__func__);
+
+	pr_debug("%s\n", __func__);
 
 	imxfb_enable_controller(fbi);
 	return 0;
@@ -522,7 +519,7 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 
 	pr_debug("%s\n",__func__);
 
-	info->pseudo_palette = kmalloc( sizeof(u32) * 16, GFP_KERNEL);
+	info->pseudo_palette = kmalloc(sizeof(u32) * 16, GFP_KERNEL);
 	if (!info->pseudo_palette)
 		return -ENOMEM;
 
@@ -530,22 +527,23 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 
 	strlcpy(info->fix.id, IMX_NAME, sizeof(info->fix.id));
 
-	info->fix.type	= FB_TYPE_PACKED_PIXELS;
+	info->fix.type			= FB_TYPE_PACKED_PIXELS;
 	info->fix.type_aux		= 0;
 	info->fix.xpanstep		= 0;
 	info->fix.ypanstep		= 0;
 	info->fix.ywrapstep		= 0;
-	info->fix.accel	= FB_ACCEL_NONE;
+	info->fix.accel			= FB_ACCEL_NONE;
 
 	info->var.nonstd		= 0;
 	info->var.activate		= FB_ACTIVATE_NOW;
 	info->var.height		= -1;
 	info->var.width	= -1;
 	info->var.accel_flags		= 0;
-	info->var.vmode	= FB_VMODE_NONINTERLACED;
+	info->var.vmode			= FB_VMODE_NONINTERLACED;
 
 	info->fbops			= &imxfb_ops;
-	info->flags			= FBINFO_FLAG_DEFAULT | FBINFO_READS_FAST;
+	info->flags			= FBINFO_FLAG_DEFAULT |
+					  FBINFO_READS_FAST;
 
 	fbi->rgb[RGB_16]		= &def_rgb_16;
 	fbi->rgb[RGB_8]			= &def_rgb_8;
@@ -593,17 +591,17 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	printk("i.MX Framebuffer driver\n");
 
 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
-	if(!res)
+	if (!res)
 		return -ENODEV;
 
 	inf = pdev->dev.platform_data;
-	if(!inf) {
+	if (!inf) {
 		dev_err(&pdev->dev,"No platform_data available\n");
 		return -ENOMEM;
 	}
 
 	info = framebuffer_alloc(sizeof(struct imxfb_info), &pdev->dev);
-	if(!info)
+	if (!info)
 		return -ENOMEM;
 
 	fbi = info->par;
@@ -611,7 +609,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	platform_set_drvdata(pdev, info);
 
 	ret = imxfb_init_fbinfo(pdev);
-	if( ret < 0 )
+	if (ret < 0)
 		goto failed_init;
 
 	res = request_mem_region(res->start, resource_size(res),
@@ -658,7 +656,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	 */
 	imxfb_check_var(&info->var, info);
 
-	ret = fb_alloc_cmap(&info->cmap, 1<<info->var.bits_per_pixel, 0);
+	ret = fb_alloc_cmap(&info->cmap, 1 << info->var.bits_per_pixel, 0);
 	if (ret < 0)
 		goto failed_cmap;
 
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: rename imxfb_mach_info to imx_fb_platform_data

[Sascha Hauer]

rename imxfb_mach_info to a name more common to kernel hackers

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-imx/include/mach/imxfb.h |    5 +-
 drivers/video/imxfb.c                  |   68 ++++++++++++++++----------------
 2 files changed, 37 insertions(+), 36 deletions(-)

diff --git a/arch/arm/mach-imx/include/mach/imxfb.h b/arch/arm/mach-imx/include/mach/imxfb.h
index 3f24f74..870d0d9 100644
--- a/arch/arm/mach-imx/include/mach/imxfb.h
+++ b/arch/arm/mach-imx/include/mach/imxfb.h
@@ -46,7 +46,7 @@
 #define DMACR_HM(x)	(((x) & 0xf) << 16)
 #define DMACR_TM(x)	((x) & 0xf)
 
-struct imxfb_mach_info {
+struct imx_fb_platform_data {
 	u_long		pixclock;
 
 	u_short		xres;
@@ -79,4 +79,5 @@ struct imxfb_mach_info {
 	void (*lcd_power)(int);
 	void (*backlight_power)(int);
 };
-void set_imx_fb_info(struct imxfb_mach_info *hard_imx_fb_info);
+
+void set_imx_fb_info(struct imx_fb_platform_data *);
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 25323ea..3d1db00 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -513,7 +513,7 @@ static int imxfb_resume(struct platform_device *dev)
 
 static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 {
-	struct imxfb_mach_info *inf = pdev->dev.platform_data;
+	struct imx_fb_platform_data *pdata = pdev->dev.platform_data;
 	struct fb_info *info = dev_get_drvdata(&pdev->dev);
 	struct imxfb_info *fbi = info->par;
 
@@ -548,32 +548,32 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 	fbi->rgb[RGB_16]		= &def_rgb_16;
 	fbi->rgb[RGB_8]			= &def_rgb_8;
 
-	fbi->max_xres			= inf->xres;
-	info->var.xres			= inf->xres;
-	info->var.xres_virtual		= inf->xres;
-	fbi->max_yres			= inf->yres;
-	info->var.yres			= inf->yres;
-	info->var.yres_virtual		= inf->yres;
-	fbi->max_bpp			= inf->bpp;
-	info->var.bits_per_pixel	= inf->bpp;
-	info->var.nonstd		= inf->nonstd;
-	info->var.pixclock		= inf->pixclock;
-	info->var.hsync_len		= inf->hsync_len;
-	info->var.left_margin		= inf->left_margin;
-	info->var.right_margin		= inf->right_margin;
-	info->var.vsync_len		= inf->vsync_len;
-	info->var.upper_margin		= inf->upper_margin;
-	info->var.lower_margin		= inf->lower_margin;
-	info->var.sync			= inf->sync;
-	info->var.grayscale		= inf->cmap_greyscale;
-	fbi->cmap_inverse		= inf->cmap_inverse;
-	fbi->cmap_static		= inf->cmap_static;
-	fbi->pcr			= inf->pcr;
-	fbi->lscr1			= inf->lscr1;
-	fbi->dmacr			= inf->dmacr;
-	fbi->pwmr			= inf->pwmr;
-	fbi->lcd_power			= inf->lcd_power;
-	fbi->backlight_power		= inf->backlight_power;
+	fbi->max_xres			= pdata->xres;
+	info->var.xres			= pdata->xres;
+	info->var.xres_virtual		= pdata->xres;
+	fbi->max_yres			= pdata->yres;
+	info->var.yres			= pdata->yres;
+	info->var.yres_virtual		= pdata->yres;
+	fbi->max_bpp			= pdata->bpp;
+	info->var.bits_per_pixel	= pdata->bpp;
+	info->var.nonstd		= pdata->nonstd;
+	info->var.pixclock		= pdata->pixclock;
+	info->var.hsync_len		= pdata->hsync_len;
+	info->var.left_margin		= pdata->left_margin;
+	info->var.right_margin		= pdata->right_margin;
+	info->var.vsync_len		= pdata->vsync_len;
+	info->var.upper_margin		= pdata->upper_margin;
+	info->var.lower_margin		= pdata->lower_margin;
+	info->var.sync			= pdata->sync;
+	info->var.grayscale		= pdata->cmap_greyscale;
+	fbi->cmap_inverse		= pdata->cmap_inverse;
+	fbi->cmap_static		= pdata->cmap_static;
+	fbi->pcr			= pdata->pcr;
+	fbi->lscr1			= pdata->lscr1;
+	fbi->dmacr			= pdata->dmacr;
+	fbi->pwmr			= pdata->pwmr;
+	fbi->lcd_power			= pdata->lcd_power;
+	fbi->backlight_power		= pdata->backlight_power;
 	info->fix.smem_len		= fbi->max_xres * fbi->max_yres *
 					  fbi->max_bpp / 8;
 
@@ -584,7 +584,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 {
 	struct imxfb_info *fbi;
 	struct fb_info *info;
-	struct imxfb_mach_info *inf;
+	struct imx_fb_platform_data *pdata;
 	struct resource *res;
 	int ret;
 
@@ -594,8 +594,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENODEV;
 
-	inf = pdev->dev.platform_data;
-	if (!inf) {
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
 		dev_err(&pdev->dev,"No platform_data available\n");
 		return -ENOMEM;
 	}
@@ -625,7 +625,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 		goto failed_ioremap;
 	}
 
-	if (!inf->fixed_screen_cpu) {
+	if (!pdata->fixed_screen_cpu) {
 		fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
 		fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
 				fbi->map_size, &fbi->map_dma, GFP_KERNEL);
@@ -642,8 +642,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
 		info->fix.smem_start = fbi->screen_dma;
 	} else {
 		/* Fixed framebuffer mapping enables location of the screen in eSRAM */
-		fbi->map_cpu = inf->fixed_screen_cpu;
-		fbi->map_dma = inf->fixed_screen_dma;
+		fbi->map_cpu = pdata->fixed_screen_cpu;
+		fbi->map_dma = pdata->fixed_screen_dma;
 		info->screen_base = fbi->map_cpu;
 		fbi->screen_cpu = fbi->map_cpu;
 		fbi->screen_dma = fbi->map_dma;
@@ -674,7 +674,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 failed_register:
 	fb_dealloc_cmap(&info->cmap);
 failed_cmap:
-	if (!inf->fixed_screen_cpu)
+	if (!pdata->fixed_screen_cpu)
 		dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu,
 			fbi->map_dma);
 failed_map:
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: add TFT support

[Sascha Hauer]

From: sascha Hauer <s.hauer@pengutronix.de>

With TFTs we can do 5/6/5 instead of 4/4/4. Add a bitfield for this
and use it with TFTs.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   38 +++++++++++++++++++-------------------
 1 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 3d1db00..4757ec6 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -116,16 +116,10 @@ struct imxfb_rgb {
 	struct fb_bitfield	transp;
 };
 
-#define RGB_16	(0)
-#define RGB_8	(1)
-#define NR_RGB	2
-
 struct imxfb_info {
 	struct platform_device  *pdev;
 	void __iomem		*regs;
 
-	struct imxfb_rgb	*rgb[NR_RGB];
-
 	u_int			max_bpp;
 	u_int			max_xres;
 	u_int			max_yres;
@@ -165,7 +159,14 @@ struct imxfb_info {
 #define MIN_XRES	64
 #define MIN_YRES	64
 
-static struct imxfb_rgb def_rgb_16 = {
+static struct imxfb_rgb def_rgb_16_tft = {
+	.red	= {.offset = 11, .length = 5,},
+	.green	= {.offset = 5, .length = 6,},
+	.blue	= {.offset = 0, .length = 5,},
+	.transp = {.offset = 0, .length = 0,},
+};
+
+static struct imxfb_rgb def_rgb_16_stn = {
 	.red	= {.offset = 8, .length = 4,},
 	.green	= {.offset = 4, .length = 4,},
 	.blue	= {.offset = 0, .length = 4,},
@@ -270,7 +271,7 @@ static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
-	int rgbidx;
+	struct imxfb_rgb *rgb;
 
 	if (var->xres < MIN_XRES)
 		var->xres = MIN_XRES;
@@ -286,23 +287,25 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
 	switch (var->bits_per_pixel) {
 	case 16:
-		rgbidx = RGB_16;
+	default:
+		if (ioread32(fbi->regs + LCDC_PCR) & PCR_TFT)
+			rgb = &def_rgb_16_tft;
+		else
+			rgb = &def_rgb_16_stn;
 		break;
 	case 8:
-		rgbidx = RGB_8;
+		rgb = &def_rgb_8;
 		break;
-	default:
-		rgbidx = RGB_16;
 	}
 
 	/*
 	 * Copy the RGB parameters for this display
 	 * from the machine specific parameters.
 	 */
-	var->red    = fbi->rgb[rgbidx]->red;
-	var->green  = fbi->rgb[rgbidx]->green;
-	var->blue   = fbi->rgb[rgbidx]->blue;
-	var->transp = fbi->rgb[rgbidx]->transp;
+	var->red    = rgb->red;
+	var->green  = rgb->green;
+	var->blue   = rgb->blue;
+	var->transp = rgb->transp;
 
 	pr_debug("RGBT length = %d:%d:%d:%d\n",
 		var->red.length, var->green.length, var->blue.length,
@@ -545,9 +548,6 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 	info->flags			= FBINFO_FLAG_DEFAULT |
 					  FBINFO_READS_FAST;
 
-	fbi->rgb[RGB_16]		= &def_rgb_16;
-	fbi->rgb[RGB_8]			= &def_rgb_8;
-
 	fbi->max_xres			= pdata->xres;
 	info->var.xres			= pdata->xres;
 	info->var.xres_virtual		= pdata->xres;
-- 
1.5.6.3


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Re: [PATCH] i.MX Framebuffer: add TFT support

[Krzysztof Helt]

On Tue,  2 Sep 2008 13:24:55 +0200
Sascha Hauer <s.hauer@pengutronix.de> wrote:

> From: sascha Hauer <s.hauer@pengutronix.de>
> 
> With TFTs we can do 5/6/5 instead of 4/4/4. Add a bitfield for this
> and use it with TFTs.
> 
> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
> ---
>  drivers/video/imxfb.c |   38 +++++++++++++++++++-------------------
>  1 files changed, 19 insertions(+), 19 deletions(-)
> 

Acked-by: Krzysztof Helt <krzysztof.h1@wp.pl>

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[PATCH] i.MX Framebuffer: rename imxfb_mach_info to imx_fb_platform_data

[Sascha Hauer]

rename imxfb_mach_info to a name more common to kernel hackers

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 arch/arm/mach-imx/include/mach/imxfb.h |    5 +-
 drivers/video/imxfb.c                  |   68 ++++++++++++++++----------------
 2 files changed, 37 insertions(+), 36 deletions(-)

diff --git a/arch/arm/mach-imx/include/mach/imxfb.h b/arch/arm/mach-imx/include/mach/imxfb.h
index 3f24f74..870d0d9 100644
--- a/arch/arm/mach-imx/include/mach/imxfb.h
+++ b/arch/arm/mach-imx/include/mach/imxfb.h
@@ -46,7 +46,7 @@
 #define DMACR_HM(x)	(((x) & 0xf) << 16)
 #define DMACR_TM(x)	((x) & 0xf)
 
-struct imxfb_mach_info {
+struct imx_fb_platform_data {
 	u_long		pixclock;
 
 	u_short		xres;
@@ -79,4 +79,5 @@ struct imxfb_mach_info {
 	void (*lcd_power)(int);
 	void (*backlight_power)(int);
 };
-void set_imx_fb_info(struct imxfb_mach_info *hard_imx_fb_info);
+
+void set_imx_fb_info(struct imx_fb_platform_data *);
diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index 00c7560..db97353 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -513,7 +513,7 @@ static int imxfb_resume(struct platform_device *dev)
 
 static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 {
-	struct imxfb_mach_info *inf = pdev->dev.platform_data;
+	struct imx_fb_platform_data *pdata = pdev->dev.platform_data;
 	struct fb_info *info = dev_get_drvdata(&pdev->dev);
 	struct imxfb_info *fbi = info->par;
 
@@ -548,32 +548,32 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 	fbi->rgb[RGB_16]		= &def_rgb_16;
 	fbi->rgb[RGB_8]			= &def_rgb_8;
 
-	fbi->max_xres			= inf->xres;
-	info->var.xres			= inf->xres;
-	info->var.xres_virtual		= inf->xres;
-	fbi->max_yres			= inf->yres;
-	info->var.yres			= inf->yres;
-	info->var.yres_virtual		= inf->yres;
-	fbi->max_bpp			= inf->bpp;
-	info->var.bits_per_pixel	= inf->bpp;
-	info->var.nonstd		= inf->nonstd;
-	info->var.pixclock		= inf->pixclock;
-	info->var.hsync_len		= inf->hsync_len;
-	info->var.left_margin		= inf->left_margin;
-	info->var.right_margin		= inf->right_margin;
-	info->var.vsync_len		= inf->vsync_len;
-	info->var.upper_margin		= inf->upper_margin;
-	info->var.lower_margin		= inf->lower_margin;
-	info->var.sync			= inf->sync;
-	info->var.grayscale		= inf->cmap_greyscale;
-	fbi->cmap_inverse		= inf->cmap_inverse;
-	fbi->cmap_static		= inf->cmap_static;
-	fbi->pcr			= inf->pcr;
-	fbi->lscr1			= inf->lscr1;
-	fbi->dmacr			= inf->dmacr;
-	fbi->pwmr			= inf->pwmr;
-	fbi->lcd_power			= inf->lcd_power;
-	fbi->backlight_power		= inf->backlight_power;
+	fbi->max_xres			= pdata->xres;
+	info->var.xres			= pdata->xres;
+	info->var.xres_virtual		= pdata->xres;
+	fbi->max_yres			= pdata->yres;
+	info->var.yres			= pdata->yres;
+	info->var.yres_virtual		= pdata->yres;
+	fbi->max_bpp			= pdata->bpp;
+	info->var.bits_per_pixel	= pdata->bpp;
+	info->var.nonstd		= pdata->nonstd;
+	info->var.pixclock		= pdata->pixclock;
+	info->var.hsync_len		= pdata->hsync_len;
+	info->var.left_margin		= pdata->left_margin;
+	info->var.right_margin		= pdata->right_margin;
+	info->var.vsync_len		= pdata->vsync_len;
+	info->var.upper_margin		= pdata->upper_margin;
+	info->var.lower_margin		= pdata->lower_margin;
+	info->var.sync			= pdata->sync;
+	info->var.grayscale		= pdata->cmap_greyscale;
+	fbi->cmap_inverse		= pdata->cmap_inverse;
+	fbi->cmap_static		= pdata->cmap_static;
+	fbi->pcr			= pdata->pcr;
+	fbi->lscr1			= pdata->lscr1;
+	fbi->dmacr			= pdata->dmacr;
+	fbi->pwmr			= pdata->pwmr;
+	fbi->lcd_power			= pdata->lcd_power;
+	fbi->backlight_power		= pdata->backlight_power;
 	info->fix.smem_len		= fbi->max_xres * fbi->max_yres *
 					  fbi->max_bpp / 8;
 
@@ -584,7 +584,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 {
 	struct imxfb_info *fbi;
 	struct fb_info *info;
-	struct imxfb_mach_info *inf;
+	struct imx_fb_platform_data *pdata;
 	struct resource *res;
 	int ret;
 
@@ -594,8 +594,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
 	if (!res)
 		return -ENODEV;
 
-	inf = pdev->dev.platform_data;
-	if (!inf) {
+	pdata = pdev->dev.platform_data;
+	if (!pdata) {
 		dev_err(&pdev->dev,"No platform_data available\n");
 		return -ENOMEM;
 	}
@@ -625,7 +625,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 		goto failed_ioremap;
 	}
 
-	if (!inf->fixed_screen_cpu) {
+	if (!pdata->fixed_screen_cpu) {
 		fbi->map_size = PAGE_ALIGN(info->fix.smem_len);
 		fbi->map_cpu = dma_alloc_writecombine(&pdev->dev,
 				fbi->map_size, &fbi->map_dma, GFP_KERNEL);
@@ -642,8 +642,8 @@ static int __init imxfb_probe(struct platform_device *pdev)
 		info->fix.smem_start = fbi->screen_dma;
 	} else {
 		/* Fixed framebuffer mapping enables location of the screen in eSRAM */
-		fbi->map_cpu = inf->fixed_screen_cpu;
-		fbi->map_dma = inf->fixed_screen_dma;
+		fbi->map_cpu = pdata->fixed_screen_cpu;
+		fbi->map_dma = pdata->fixed_screen_dma;
 		info->screen_base = fbi->map_cpu;
 		fbi->screen_cpu = fbi->map_cpu;
 		fbi->screen_dma = fbi->map_dma;
@@ -674,7 +674,7 @@ static int __init imxfb_probe(struct platform_device *pdev)
 failed_register:
 	fb_dealloc_cmap(&info->cmap);
 failed_cmap:
-	if (!inf->fixed_screen_cpu)
+	if (!pdata->fixed_screen_cpu)
 		dma_free_writecombine(&pdev->dev,fbi->map_size,fbi->map_cpu,
 			fbi->map_dma);
 failed_map:
-- 
1.5.6.3


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[PATCH] i.MX Framebuffer: add TFT support

[Sascha Hauer]

From: sascha Hauer <s.hauer@pengutronix.de>

With TFTs we can do 5/6/5 instead of 4/4/4. Add a bitfield for this
and use it with TFTs.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
---
 drivers/video/imxfb.c |   38 +++++++++++++++++++-------------------
 1 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/drivers/video/imxfb.c b/drivers/video/imxfb.c
index db97353..a8d3e61 100644
--- a/drivers/video/imxfb.c
+++ b/drivers/video/imxfb.c
@@ -116,16 +116,10 @@ struct imxfb_rgb {
 	struct fb_bitfield	transp;
 };
 
-#define RGB_16	(0)
-#define RGB_8	(1)
-#define NR_RGB	2
-
 struct imxfb_info {
 	struct platform_device  *pdev;
 	void __iomem		*regs;
 
-	struct imxfb_rgb	*rgb[NR_RGB];
-
 	u_int			max_bpp;
 	u_int			max_xres;
 	u_int			max_yres;
@@ -165,7 +159,14 @@ struct imxfb_info {
 #define MIN_XRES	64
 #define MIN_YRES	64
 
-static struct imxfb_rgb def_rgb_16 = {
+static struct imxfb_rgb def_rgb_16_tft = {
+	.red	= {.offset = 11, .length = 5,},
+	.green	= {.offset = 5, .length = 6,},
+	.blue	= {.offset = 0, .length = 5,},
+	.transp = {.offset = 0, .length = 0,},
+};
+
+static struct imxfb_rgb def_rgb_16_stn = {
 	.red	= {.offset = 8, .length = 4,},
 	.green	= {.offset = 4, .length = 4,},
 	.blue	= {.offset = 0, .length = 4,},
@@ -270,7 +271,7 @@ static int imxfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
 static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 {
 	struct imxfb_info *fbi = info->par;
-	int rgbidx;
+	struct imxfb_rgb *rgb;
 
 	if (var->xres < MIN_XRES)
 		var->xres = MIN_XRES;
@@ -286,23 +287,25 @@ static int imxfb_check_var(struct fb_var_screeninfo *var, struct fb_info *info)
 	pr_debug("var->bits_per_pixel=%d\n", var->bits_per_pixel);
 	switch (var->bits_per_pixel) {
 	case 16:
-		rgbidx = RGB_16;
+	default:
+		if (ioread32(fbi->regs + LCDC_PCR) & PCR_TFT)
+			rgb = &def_rgb_16_tft;
+		else
+			rgb = &def_rgb_16_stn;
 		break;
 	case 8:
-		rgbidx = RGB_8;
+		rgb = &def_rgb_8;
 		break;
-	default:
-		rgbidx = RGB_16;
 	}
 
 	/*
 	 * Copy the RGB parameters for this display
 	 * from the machine specific parameters.
 	 */
-	var->red    = fbi->rgb[rgbidx]->red;
-	var->green  = fbi->rgb[rgbidx]->green;
-	var->blue   = fbi->rgb[rgbidx]->blue;
-	var->transp = fbi->rgb[rgbidx]->transp;
+	var->red    = rgb->red;
+	var->green  = rgb->green;
+	var->blue   = rgb->blue;
+	var->transp = rgb->transp;
 
 	pr_debug("RGBT length = %d:%d:%d:%d\n",
 		var->red.length, var->green.length, var->blue.length,
@@ -545,9 +548,6 @@ static int __init imxfb_init_fbinfo(struct platform_device *pdev)
 	info->flags			= FBINFO_FLAG_DEFAULT |
 					  FBINFO_READS_FAST;
 
-	fbi->rgb[RGB_16]		= &def_rgb_16;
-	fbi->rgb[RGB_8]			= &def_rgb_8;
-
 	fbi->max_xres			= pdata->xres;
 	info->var.xres			= pdata->xres;
 	info->var.xres_virtual		= pdata->xres;
-- 
1.5.6.3


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Re: i.MX framebuffer patches

[Sascha Hauer]

On Tue, Sep 02, 2008 at 01:24:43PM +0200, Sascha Hauer wrote:
> These patches are the rework of the patches I sent some time ago based
> on comments from Krzysztof Helt, Andrew Dyer and Russell King. The patches
> are also available as git:
> 
> git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6.git imxfb

Are these patches being cared upon? They didn't show up in any tree yet.
To show off my growing git experience here's a proper pull request ;)

Sascha

The following changes since commit 278429cff8809958d25415ba0ed32b59866ab1a8:
  Linus Torvalds (1):
        Merge branch 'i2c-for-linus' of git://jdelvare.pck.nerim.net/jdelvare-2.6

are available in the git repository at:

  git://pasiphae.extern.pengutronix.de/git/imx/linux-2.6.git imxfb

Juergen Beisert (1):
      i.MX Framebuffer: Use readl/writel instead of direct pointer deref

Sascha Hauer (5):
      i.MX Framebuffer: remove gpio setup function
      i.MX Framebuffer: fix margins
      i.MX Framebuffer: remove header file
      i.MX Framebuffer: Cleanup Coding style
      i.MX Framebuffer: rename imxfb_mach_info to imx_fb_platform_data

sascha Hauer (1):
      i.MX Framebuffer: add TFT support

 arch/arm/mach-imx/include/mach/imxfb.h |   50 ++++-
 drivers/video/imxfb.c                  |  468 ++++++++++++++++++--------------
 drivers/video/imxfb.h                  |   73 -----
 3 files changed, 315 insertions(+), 276 deletions(-)
 delete mode 100644 drivers/video/imxfb.h



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i.MX Framebuffer patches

[Sascha Hauer]

Here are some patches for the i.MX framebuffer driver. They mainly prepare
the driver for use with other i.MX processors like the i.MX27.

Sascha



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