diff options
author | Eric Miao <eric.miao@marvell.com> | 2008-08-29 08:09:48 +0800 |
---|---|---|
committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2008-09-23 22:04:36 +0100 |
commit | edb403fbfb0ad56e62d8ebbecc3b846487020e0f (patch) | |
tree | f0b10d6738aef50ad886e09d6735b1398875c989 /arch/arm/mach-pxa/corgi.c | |
parent | 9ae808d8b1d8a99832798a6699b4cb7f51bfc872 (diff) | |
download | linux-edb403fbfb0ad56e62d8ebbecc3b846487020e0f.tar.bz2 |
[ARM] pxa/corgi: use SPI-based driver for ads7846, corgi-lcd and max1111
Signed-off-by: Eric Miao <eric.miao@marvell.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'arch/arm/mach-pxa/corgi.c')
-rw-r--r-- | arch/arm/mach-pxa/corgi.c | 293 |
1 files changed, 131 insertions, 162 deletions
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c index 14155fc49a12..68765636bfce 100644 --- a/arch/arm/mach-pxa/corgi.c +++ b/arch/arm/mach-pxa/corgi.c @@ -22,6 +22,9 @@ #include <linux/pm.h> #include <linux/gpio.h> #include <linux/backlight.h> +#include <linux/spi/spi.h> +#include <linux/spi/ads7846.h> +#include <linux/spi/corgi_lcd.h> #include <video/w100fb.h> #include <asm/setup.h> @@ -43,6 +46,7 @@ #include <mach/irda.h> #include <mach/mmc.h> #include <mach/udc.h> +#include <mach/pxa2xx_spi.h> #include <mach/corgi.h> #include <mach/sharpsl.h> @@ -151,53 +155,6 @@ static struct scoop_pcmcia_config corgi_pcmcia_config = { EXPORT_SYMBOL(corgiscoop_device); - -/* - * Corgi SSP Device - * - * Set the parent as the scoop device because a lot of SSP devices - * also use scoop functions and this makes the power up/down order - * work correctly. - */ -struct platform_device corgissp_device = { - .name = "corgi-ssp", - .dev = { - .parent = &corgiscoop_device.dev, - }, - .id = -1, -}; - -struct corgissp_machinfo corgi_ssp_machinfo = { - .port = 1, - .cs_lcdcon = CORGI_GPIO_LCDCON_CS, - .cs_ads7846 = CORGI_GPIO_ADS7846_CS, - .cs_max1111 = CORGI_GPIO_MAX1111_CS, - .clk_lcdcon = 76, - .clk_ads7846 = 2, - .clk_max1111 = 8, -}; - - -/* - * LCD/Framebuffer - */ -static void w100_lcdtg_suspend(struct w100fb_par *par) -{ - corgi_lcdtg_suspend(); -} - -static void w100_lcdtg_init(struct w100fb_par *par) -{ - corgi_lcdtg_hw_init(par->xres); -} - - -static struct w100_tg_info corgi_lcdtg_info = { - .change = w100_lcdtg_init, - .suspend = w100_lcdtg_suspend, - .resume = w100_lcdtg_init, -}; - static struct w100_mem_info corgi_fb_mem = { .ext_cntl = 0x00040003, .sdram_mode_reg = 0x00650021, @@ -276,7 +233,6 @@ static struct w100_mode corgi_fb_modes[] = { }; static struct w100fb_mach_info corgi_fb_info = { - .tg = &corgi_lcdtg_info, .init_mode = INIT_MODE_ROTATED, .mem = &corgi_fb_mem, .regs = &corgi_fb_regs, @@ -302,60 +258,10 @@ static struct platform_device corgifb_device = { .resource = corgi_fb_resources, .dev = { .platform_data = &corgi_fb_info, - .parent = &corgissp_device.dev, }, }; - -/* - * Corgi Backlight Device - */ -static void corgi_bl_kick_battery(void) -{ - void (*kick_batt)(void); - - kick_batt = symbol_get(sharpsl_battery_kick); - if (kick_batt) { - kick_batt(); - symbol_put(sharpsl_battery_kick); - } -} - -static void corgi_bl_set_intensity(int intensity) -{ - if (intensity > 0x10) - intensity += 0x10; - - /* Bits 0-4 are accessed via the SSP interface */ - corgi_ssp_blduty_set(intensity & 0x1f); - - /* Bit 5 is via SCOOP */ - if (intensity & 0x0020) - set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT); - else - reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT); -} - -static struct generic_bl_info corgi_bl_machinfo = { - .name = "corgi-bl", - .max_intensity = 0x2f, - .default_intensity = 0x1f, - .limit_mask = 0x0b, - .set_bl_intensity = corgi_bl_set_intensity, - .kick_battery = corgi_bl_kick_battery, -}; - -static struct platform_device corgibl_device = { - .name = "generic-bl", - .dev = { - .parent = &corgifb_device.dev, - .platform_data = &corgi_bl_machinfo, - }, - .id = -1, -}; - - /* * Corgi Keyboard Device */ @@ -373,66 +279,6 @@ static struct platform_device corgiled_device = { .id = -1, }; - -/* - * Corgi Touch Screen Device - */ -static unsigned long (*get_hsync_invperiod)(struct device *dev); - -static void inline sharpsl_wait_sync(int gpio) -{ - while((GPLR(gpio) & GPIO_bit(gpio)) == 0); - while((GPLR(gpio) & GPIO_bit(gpio)) != 0); -} - -static unsigned long corgi_get_hsync_invperiod(void) -{ - if (!get_hsync_invperiod) - get_hsync_invperiod = symbol_get(w100fb_get_hsynclen); - if (!get_hsync_invperiod) - return 0; - - return get_hsync_invperiod(&corgifb_device.dev); -} - -static void corgi_put_hsync(void) -{ - if (get_hsync_invperiod) - symbol_put(w100fb_get_hsynclen); - get_hsync_invperiod = NULL; -} - -static void corgi_wait_hsync(void) -{ - sharpsl_wait_sync(CORGI_GPIO_HSYNC); -} - -static struct resource corgits_resources[] = { - [0] = { - .start = CORGI_IRQ_GPIO_TP_INT, - .end = CORGI_IRQ_GPIO_TP_INT, - .flags = IORESOURCE_IRQ, - }, -}; - -static struct corgits_machinfo corgi_ts_machinfo = { - .get_hsync_invperiod = corgi_get_hsync_invperiod, - .put_hsync = corgi_put_hsync, - .wait_hsync = corgi_wait_hsync, -}; - -static struct platform_device corgits_device = { - .name = "corgi-ts", - .dev = { - .parent = &corgissp_device.dev, - .platform_data = &corgi_ts_machinfo, - }, - .id = -1, - .num_resources = ARRAY_SIZE(corgits_resources), - .resource = corgits_resources, -}; - - /* * MMC/SD Device * @@ -555,14 +401,137 @@ static struct pxa2xx_udc_mach_info udc_info __initdata = { .gpio_pullup = CORGI_GPIO_USB_PULLUP, }; +#if defined(CONFIG_SPI_PXA2XX) || defined(CONFIG_SPI_PXA2XX_MASTER) +static struct pxa2xx_spi_master corgi_spi_info = { + .num_chipselect = 3, +}; + +static struct ads7846_platform_data corgi_ads7846_info = { + .model = 7846, + .vref_delay_usecs = 100, + .x_plate_ohms = 419, + .y_plate_ohms = 486, + .gpio_pendown = CORGI_GPIO_TP_INT, +}; + +static void corgi_ads7846_cs(u32 command) +{ + gpio_set_value(CORGI_GPIO_ADS7846_CS, !(command == PXA2XX_CS_ASSERT)); +} + +static struct pxa2xx_spi_chip corgi_ads7846_chip = { + .cs_control = corgi_ads7846_cs, +}; + +static void corgi_notify_intensity(int intensity) +{ + /* Bit 5 is via SCOOP */ + if (intensity & 0x0020) + set_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT); + else + reset_scoop_gpio(&corgiscoop_device.dev, CORGI_SCP_BACKLIGHT_CONT); +} + +static void corgi_bl_kick_battery(void) +{ + void (*kick_batt)(void); + + kick_batt = symbol_get(sharpsl_battery_kick); + if (kick_batt) { + kick_batt(); + symbol_put(sharpsl_battery_kick); + } +} + +static struct corgi_lcd_platform_data corgi_lcdcon_info = { + .init_mode = CORGI_LCD_MODE_VGA, + .max_intensity = 0x2f, + .default_intensity = 0x1f, + .limit_mask = 0x0b, + .notify = corgi_notify_intensity, + .kick_battery = corgi_bl_kick_battery, +}; + +static void corgi_lcdcon_cs(u32 command) +{ + gpio_set_value(CORGI_GPIO_LCDCON_CS, !(command == PXA2XX_CS_ASSERT)); +} + +static struct pxa2xx_spi_chip corgi_lcdcon_chip = { + .cs_control = corgi_lcdcon_cs, +}; + +static void corgi_max1111_cs(u32 command) +{ + gpio_set_value(CORGI_GPIO_MAX1111_CS, !(command == PXA2XX_CS_ASSERT)); +} + +static struct pxa2xx_spi_chip corgi_max1111_chip = { + .cs_control = corgi_max1111_cs, +}; + +static struct spi_board_info corgi_spi_devices[] = { + { + .modalias = "ads7846", + .max_speed_hz = 1200000, + .bus_num = 1, + .chip_select = 0, + .platform_data = &corgi_ads7846_info, + .controller_data= &corgi_ads7846_chip, + .irq = gpio_to_irq(CORGI_GPIO_TP_INT), + }, { + .modalias = "corgi-lcd", + .max_speed_hz = 50000, + .bus_num = 1, + .chip_select = 1, + .platform_data = &corgi_lcdcon_info, + .controller_data= &corgi_lcdcon_chip, + }, { + .modalias = "max1111", + .max_speed_hz = 450000, + .bus_num = 1, + .chip_select = 2, + .controller_data= &corgi_max1111_chip, + }, +}; + +static void __init corgi_init_spi(void) +{ + int err; + + err = gpio_request(CORGI_GPIO_ADS7846_CS, "ADS7846_CS"); + if (err) + return; + + err = gpio_request(CORGI_GPIO_LCDCON_CS, "LCDCON_CS"); + if (err) + goto err_free_1; + + err = gpio_request(CORGI_GPIO_MAX1111_CS, "MAX1111_CS"); + if (err) + goto err_free_2; + + gpio_direction_output(CORGI_GPIO_ADS7846_CS, 1); + gpio_direction_output(CORGI_GPIO_LCDCON_CS, 1); + gpio_direction_output(CORGI_GPIO_MAX1111_CS, 1); + + pxa2xx_set_spi_info(1, &corgi_spi_info); + spi_register_board_info(ARRAY_AND_SIZE(corgi_spi_devices)); + return; + +err_free_2: + gpio_free(CORGI_GPIO_LCDCON_CS); +err_free_1: + gpio_free(CORGI_GPIO_ADS7846_CS); +} +#else +static inline void corgi_init_spi(void) {} +#endif static struct platform_device *devices[] __initdata = { &corgiscoop_device, - &corgissp_device, &corgifb_device, &corgikbd_device, - &corgibl_device, - &corgits_device, &corgiled_device, }; @@ -592,7 +561,7 @@ static void __init corgi_init(void) pxa2xx_mfp_config(ARRAY_AND_SIZE(corgi_pin_config)); - corgi_ssp_set_machinfo(&corgi_ssp_machinfo); + corgi_init_spi(); pxa_set_udc_info(&udc_info); pxa_set_mci_info(&corgi_mci_platform_data); |