[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>
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index b069dcb..ced2a67 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -28,7 +28,7 @@
obj-$(CONFIG_ARCH_PXA_IDP) += idp.o
obj-$(CONFIG_MACH_TRIZEPS4) += trizeps4.o
obj-$(CONFIG_MACH_COLIBRI) += colibri.o
-obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o corgi_pm.o
+obj-$(CONFIG_PXA_SHARP_C7xx) += corgi.o sharpsl_pm.o corgi_pm.o
obj-$(CONFIG_PXA_SHARP_Cxx00) += spitz.o corgi_ssp.o corgi_lcd.o sharpsl_pm.o spitz_pm.o
obj-$(CONFIG_MACH_AKITA) += akita-ioexp.o
obj-$(CONFIG_MACH_POODLE) += poodle.o
diff --git a/arch/arm/mach-pxa/corgi.c b/arch/arm/mach-pxa/corgi.c
index 14155fc..6876563 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 @@
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 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 @@
.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 @@
.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 @@
.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 @@
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);