[PATCH 3/6] ARM: mach-imx/mx27_3ds: Add LCD support

Tue Jun 21 08:11:05 EDT 2011

On Mon, Jun 20, 2011 at 01:48:39PM -0300, Fabio Estevam wrote:
> On mx27_3ds board there is a l4f00242t03 LCD that is controlled via CSPI1.
> 
> Add support for CSPI1 and LCD.
> 
> Signed-off-by: Fabio Estevam <fabio.estevam at freescale.com>
> ---
>  arch/arm/mach-imx/Kconfig         |    1 +
>  arch/arm/mach-imx/mach-mx27_3ds.c |   90 +++++++++++++++++++++++++++++++++++++
>  2 files changed, 91 insertions(+), 0 deletions(-)
> 
> diff --git a/arch/arm/mach-imx/Kconfig b/arch/arm/mach-imx/Kconfig
> index 59c97a3..8767c60 100644
> --- a/arch/arm/mach-imx/Kconfig
> +++ b/arch/arm/mach-imx/Kconfig
> @@ -276,6 +276,7 @@ config MACH_MX27_3DS
>  	select SOC_IMX27
>  	select IMX_HAVE_PLATFORM_FSL_USB2_UDC
>  	select IMX_HAVE_PLATFORM_IMX2_WDT
> +	select IMX_HAVE_PLATFORM_IMX_FB
>  	select IMX_HAVE_PLATFORM_IMX_I2C
>  	select IMX_HAVE_PLATFORM_IMX_KEYPAD
>  	select IMX_HAVE_PLATFORM_IMX_UART
> diff --git a/arch/arm/mach-imx/mach-mx27_3ds.c b/arch/arm/mach-imx/mach-mx27_3ds.c
> index be68e2d..de99c32 100644
> --- a/arch/arm/mach-imx/mach-mx27_3ds.c
> +++ b/arch/arm/mach-imx/mach-mx27_3ds.c
> @@ -29,6 +29,7 @@
>  #include <linux/mfd/mc13783.h>
>  #include <linux/spi/spi.h>
>  #include <linux/regulator/machine.h>
> +#include <linux/spi/l4f00242t03.h>
>  
>  #include <asm/mach-types.h>
>  #include <asm/mach/arch.h>
> @@ -47,6 +48,9 @@
>  #define SPI2_SS0 		IMX_GPIO_NR(4, 21)
>  #define EXPIO_PARENT_INT	(MXC_INTERNAL_IRQS + GPIO_PORTC + 28)
>  #define PMIC_INT		IMX_GPIO_NR(3, 14)
> +#define SPI1_SS0		IMX_GPIO_NR(4, 28)
> +#define LCD_RESET		IMX_GPIO_NR(1, 3)
> +#define LCD_ENABLE		IMX_GPIO_NR(1, 31)
>  
>  static const int mx27pdk_pins[] __initconst = {
>  	/* UART1 */
> @@ -95,6 +99,11 @@ static const int mx27pdk_pins[] __initconst = {
>  	PE2_PF_USBOTG_DIR,
>  	PE24_PF_USBOTG_CLK,
>  	PE25_PF_USBOTG_DATA7,
> +	/* CSPI1 */
> +	PD31_PF_CSPI1_MOSI,
> +	PD30_PF_CSPI1_MISO,
> +	PD29_PF_CSPI1_SCLK,
> +	PD25_PF_CSPI1_RDY,
>  	/* CSPI2 */
>  	PD22_PF_CSPI2_SCLK,
>  	PD23_PF_CSPI2_MISO,
> @@ -102,6 +111,29 @@ static const int mx27pdk_pins[] __initconst = {
>  	/* I2C1 */
>  	PD17_PF_I2C_DATA,
>  	PD18_PF_I2C_CLK,
> +	/* LCD */
> +	PA5_PF_LSCLK,
> +	PA6_PF_LD0,
> +	PA7_PF_LD1,
> +	PA8_PF_LD2,
> +	PA9_PF_LD3,
> +	PA10_PF_LD4,
> +	PA11_PF_LD5,
> +	PA12_PF_LD6,
> +	PA13_PF_LD7,
> +	PA14_PF_LD8,
> +	PA15_PF_LD9,
> +	PA16_PF_LD10,
> +	PA17_PF_LD11,
> +	PA18_PF_LD12,
> +	PA19_PF_LD13,
> +	PA20_PF_LD14,
> +	PA21_PF_LD15,
> +	PA22_PF_LD16,
> +	PA23_PF_LD17,
> +	PA28_PF_HSYNC,
> +	PA29_PF_VSYNC,
> +	PA30_PF_CONTRAST,
>  };
>  
>  static const struct imxuart_platform_data uart_pdata __initconst = {
> @@ -260,6 +292,13 @@ static struct mc13xxx_platform_data mc13783_pdata = {
>  };
>  
>  /* SPI */
> +static int spi1_chipselect[] = {SPI1_SS0};
> +
> +static const struct spi_imx_master spi1_pdata __initconst = {
> +	.chipselect	= spi1_chipselect,
> +	.num_chipselect	= ARRAY_SIZE(spi1_chipselect),
> +};
> +
>  static int spi2_internal_chipselect[] = {SPI2_SS0};
>  
>  static const struct spi_imx_master spi2_pdata __initconst = {
> @@ -267,6 +306,46 @@ static const struct spi_imx_master spi2_pdata __initconst = {
>  	.num_chipselect	= ARRAY_SIZE(spi2_internal_chipselect),
>  };
>  
> +static struct imx_fb_videomode mx27_3ds_modes[] = {
> +	{	/* 480x640 @ 60 Hz */
> +		.mode = {
> +			.name		= "Epson-VGA",
> +			.refresh	= 60,
> +			.xres		= 480,
> +			.yres		= 640,
> +			.pixclock	= 41701,
> +			.left_margin	= 20,
> +			.right_margin	= 41,
> +			.upper_margin	= 10,
> +			.lower_margin	= 5,
> +			.hsync_len	= 20,
> +			.vsync_len	= 10,
> +			.sync		= FB_SYNC_OE_ACT_HIGH |
> +						FB_SYNC_CLK_INVERT,
> +			.vmode		= FB_VMODE_NONINTERLACED,
> +			.flag		= 0,
> +		},
> +		.bpp		= 16,
> +		.pcr		= 0xFAC08B82,
> +	},
> +};
> +
> +static const struct imx_fb_platform_data mx27_3ds_fb_data __initconst = {
> +	.mode = mx27_3ds_modes,
> +	.num_modes = ARRAY_SIZE(mx27_3ds_modes),
> +	.pwmr		= 0x00A903FF,
> +	.lscr1		= 0x00120300,
> +	.dmacr		= 0x00020010,
> +};
> +
> +/* LCD */
> +static struct l4f00242t03_pdata mx27_3ds_lcd_pdata = {
> +	.reset_gpio		= LCD_RESET,
> +	.data_enable_gpio	= LCD_ENABLE,
> +	.core_supply		= "lcd_2v8",
> +	.io_supply		= "vdd_lcdio",
> +};
> +
>  static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
>  	{
>  		.modalias	= "mc13783",
> @@ -276,6 +355,12 @@ static struct spi_board_info mx27_3ds_spi_devs[] __initdata = {
>  		.platform_data	= &mc13783_pdata,
>  		.irq = IRQ_GPIOC(14),
>  		.mode = SPI_CS_HIGH,
> +	}, {
> +		.modalias	= "l4f00242t03",
> +		.max_speed_hz	= 5000000,
> +		.bus_num	= 0,
> +		.chip_select	= 0, /* SS0 */
> +		.platform_data	= &mx27_3ds_lcd_pdata,
>  	},
>  };
>  
> @@ -308,14 +393,19 @@ static void __init mx27pdk_init(void)
>  	
>  	mxc_gpio_mode(SPI2_SS0 | GPIO_GPIO | GPIO_OUT);
>  	mxc_gpio_mode(PMIC_INT | GPIO_GPIO | GPIO_IN);
> +	mxc_gpio_mode(SPI1_SS0 | GPIO_GPIO | GPIO_OUT);
> +	mxc_gpio_mode(LCD_ENABLE | GPIO_GPIO | GPIO_OUT);
> +	mxc_gpio_mode(LCD_RESET | GPIO_GPIO | GPIO_OUT);

You can add these to the static pin array instead.

Sascha

>  
>  	imx27_add_spi_imx1(&spi2_pdata);
> +	imx27_add_spi_imx0(&spi1_pdata);
>  	spi_register_board_info(mx27_3ds_spi_devs,
>  						ARRAY_SIZE(mx27_3ds_spi_devs));
>  
>  	if (mxc_expio_init(MX27_CS5_BASE_ADDR, EXPIO_PARENT_INT))
>  		pr_warn("Init of the debugboard failed, all devices on the debugboard are unusable.\n");
>  	imx27_add_imx_i2c(0, &mx27_3ds_i2c0_data);
> +	imx27_add_imx_fb(&mx27_3ds_fb_data);
>  }
>  
>  static void __init mx27pdk_timer_init(void)
> -- 
> 1.6.0.4
> 
> 
> 

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