From mboxrd@z Thu Jan  1 00:00:00 1970
From: s.hauer@pengutronix.de (Sascha Hauer)
Date: Thu, 8 Mar 2012 20:37:11 +0100
Subject: [PATCH v3] ARM : mx35: 3ds-board: add framebuffer device
In-Reply-To: <1320401632-21444-1-git-send-email-b39297@freescale.com>
References: <1320401632-21444-1-git-send-email-b39297@freescale.com>
Message-ID: <20120308193711.GA32550@pengutronix.de>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On Fri, Nov 04, 2011 at 06:13:52PM +0800, wu guoxing wrote:
> This patch adds framebuffer support for freescale mx35 3ds board
> 
> Signed-off-by: Wu Guoxing <b39297@freescale.com>
> ---
> Changes since v2:
> 	1. use gpio_set_value_cansleep instead of gpio_set_value
> Changes since v1:
> 	1. use gpio driver for mc9s08dz60
> 
>  arch/arm/mach-imx/mach-mx35_3ds.c |  113 +++++++++++++++++++++++++++++++++++++
>  1 files changed, 113 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/mach-mx35_3ds.c b/arch/arm/mach-imx/mach-mx35_3ds.c
> index 5a5eb3e..fa19c0d 100644
> --- a/arch/arm/mach-imx/mach-mx35_3ds.c
> +++ b/arch/arm/mach-imx/mach-mx35_3ds.c
> @@ -40,9 +40,86 @@
>  #include <mach/iomux-mx35.h>
>  #include <mach/irqs.h>
>  #include <mach/3ds_debugboard.h>
> +#include <video/platform_lcd.h>
>  
>  #include "devices-imx35.h"
>  
> +static const struct fb_videomode fb_modedb[] = {
> +	{
> +	 /* 800x480 @ 55 Hz */
> +	 .name = "Ceramate-CLAA070VC01",
> +	 .refresh = 55,
> +	 .xres = 800,
> +	 .yres = 480,
> +	 .pixclock = 40000,
> +	 .left_margin = 40,
> +	 .right_margin = 40,
> +	 .upper_margin = 5,
> +	 .lower_margin = 5,
> +	 .hsync_len = 20,
> +	 .vsync_len = 10,
> +	 .sync = FB_SYNC_OE_ACT_HIGH,
> +	 .vmode = FB_VMODE_NONINTERLACED,
> +	 .flag = 0,

Two tabs here please

> +	 },
> +};
> +
> +static const struct ipu_platform_data mx3_ipu_data __initconst = {
> +	.irq_base = MXC_IPU_IRQ_START,
> +};
> +
> +static struct mx3fb_platform_data mx3fb_pdata __initdata = {
> +	.name = "Ceramate-CLAA070VC01",
> +	.mode = fb_modedb,
> +	.num_modes = ARRAY_SIZE(fb_modedb),
> +};
> +
> +static struct i2c_board_info __initdata i2c_devices_3ds[] = {
> +	{
> +		I2C_BOARD_INFO("mc9s08dz60", 0x69),
> +	},
> +};
> +
> +static int mc9s08dz60_gpiochip_match(struct gpio_chip *chip,
> +						     void *data)
> +{
> +	return !strcmp(chip->label, data);
> +}
> +
> +static int mc9s08dz60_lcd_gpio_get(void)
> +{
> +	int ret;
> +	struct gpio_chip *chip;
> +	chip = gpiochip_find(
> +			"mc9s08dz60", mc9s08dz60_gpiochip_match);

The way you search for the gpio looks awkward, though there seems to be
no better way. At least you should call this only once and store the
value. Also you should request the gpio.

> +	if (chip)
> +		ret = chip->base + 6;
> +	else {
> +		pr_err("didn't find mc9s08dz60 gpio\n");
> +		ret = -1;
> +	}

If you have braces in one path the other path should have them aswell.
Please don't return -1 as error value, choose a better one from
incude/asm-generic/errno*

> +	int gpio;
> +
> +	gpio = mc9s08dz60_lcd_gpio_get();
> +	if (gpio >= 0)
> +		gpio_set_value_cansleep(gpio, power);
> +}
> +
> +static struct plat_lcd_data mx35_3ds_lcd_data = {
> +	.set_power = mx35_3ds_lcd_set_power,
> +};
> +
> +static struct platform_device mx35_3ds_lcd = {
> +	.name = "platform-lcd",
> +	.dev.platform_data = &mx35_3ds_lcd_data,
> +};
> +
>  #define EXPIO_PARENT_INT	gpio_to_irq(IMX_GPIO_NR(1, 1))
>  
>  static const struct imxuart_platform_data uart_pdata __initconst = {
> @@ -120,6 +197,32 @@ static iomux_v3_cfg_t mx35pdk_pads[] = {
>  	/* I2C1 */
>  	MX35_PAD_I2C1_CLK__I2C1_SCL,
>  	MX35_PAD_I2C1_DAT__I2C1_SDA,
> +	/* Display */
> +	MX35_PAD_LD0__IPU_DISPB_DAT_0,
> +	MX35_PAD_LD1__IPU_DISPB_DAT_1,
> +	MX35_PAD_LD2__IPU_DISPB_DAT_2,
> +	MX35_PAD_LD3__IPU_DISPB_DAT_3,
> +	MX35_PAD_LD4__IPU_DISPB_DAT_4,
> +	MX35_PAD_LD5__IPU_DISPB_DAT_5,
> +	MX35_PAD_LD6__IPU_DISPB_DAT_6,
> +	MX35_PAD_LD7__IPU_DISPB_DAT_7,
> +	MX35_PAD_LD8__IPU_DISPB_DAT_8,
> +	MX35_PAD_LD9__IPU_DISPB_DAT_9,
> +	MX35_PAD_LD10__IPU_DISPB_DAT_10,
> +	MX35_PAD_LD11__IPU_DISPB_DAT_11,
> +	MX35_PAD_LD12__IPU_DISPB_DAT_12,
> +	MX35_PAD_LD13__IPU_DISPB_DAT_13,
> +	MX35_PAD_LD14__IPU_DISPB_DAT_14,
> +	MX35_PAD_LD15__IPU_DISPB_DAT_15,
> +	MX35_PAD_LD16__IPU_DISPB_DAT_16,
> +	MX35_PAD_LD17__IPU_DISPB_DAT_17,
> +	MX35_PAD_D3_HSYNC__IPU_DISPB_D3_HSYNC,
> +	MX35_PAD_D3_FPSHIFT__IPU_DISPB_D3_CLK,
> +	MX35_PAD_D3_DRDY__IPU_DISPB_D3_DRDY,
> +	MX35_PAD_CONTRAST__IPU_DISPB_CONTR,
> +	MX35_PAD_D3_VSYNC__IPU_DISPB_D3_VSYNC,
> +	MX35_PAD_D3_REV__IPU_DISPB_D3_REV,
> +	MX35_PAD_D3_CLS__IPU_DISPB_D3_CLS,
>  };
>  
>  static int mx35_3ds_otg_init(struct platform_device *pdev)
> @@ -179,6 +282,8 @@ static const struct imxi2c_platform_data mx35_3ds_i2c0_data __initconst = {
>   */
>  static void __init mx35_3ds_init(void)
>  {
> +	struct platform_device *imx35_fb_pdev;
> +
>  	imx35_soc_init();
>  
>  	mxc_iomux_v3_setup_multiple_pads(mx35pdk_pads, ARRAY_SIZE(mx35pdk_pads));
> @@ -204,6 +309,14 @@ static void __init mx35_3ds_init(void)
>  		pr_warn("Init of the debugboard failed, all "
>  				"devices on the debugboard are unusable.\n");
>  	imx35_add_imx_i2c0(&mx35_3ds_i2c0_data);
> +
> +	i2c_register_board_info(
> +		0, i2c_devices_3ds, ARRAY_SIZE(i2c_devices_3ds));
> +
> +	imx35_add_ipu_core(&mx3_ipu_data);
> +	imx35_fb_pdev = imx35_add_mx3_sdc_fb(&mx3fb_pdata);
> +	mx35_3ds_lcd.dev.parent = &imx35_fb_pdev->dev;
> +	platform_device_register(&mx35_3ds_lcd);
>  }
>  
>  static void __init mx35pdk_timer_init(void)
> -- 
> 1.7.1
> 
> 
> 
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> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 

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