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authorMarek Vasut <marek.vasut@gmail.com>2010-07-27 23:11:03 +0200
committerEric Miao <eric.y.miao@gmail.com>2010-08-05 14:32:46 +0800
commit02a453e4a5a7ca8c8801140f412d327686112e4e (patch)
tree94c4644a6021fce19a2511eac5768c71a06c84fe /arch/arm/mach-pxa
parenta9c0629cdefd9c26746ece510fcc88357869685e (diff)
[ARM] pxa/balloon3: PCF857x GPIO expander and LEDs
Add supported for PCF8574A GPIO expander and LEDs attached to it. Signed-off-by: Marek Vasut <marek.vasut@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa')
-rw-r--r--arch/arm/mach-pxa/balloon3.c84
-rw-r--r--arch/arm/mach-pxa/include/mach/balloon3.h11
2 files changed, 92 insertions, 3 deletions
diff --git a/arch/arm/mach-pxa/balloon3.c b/arch/arm/mach-pxa/balloon3.c
index 91ad56d6e92..6f594bd410d 100644
--- a/arch/arm/mach-pxa/balloon3.c
+++ b/arch/arm/mach-pxa/balloon3.c
@@ -26,6 +26,7 @@
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
#include <linux/types.h>
+#include <linux/i2c/pcf857x.h>
#include <asm/setup.h>
#include <asm/mach-types.h>
@@ -375,15 +376,65 @@ static struct gpio_led_platform_data balloon3_gpio_led_info = {
static struct platform_device balloon3_leds = {
.name = "leds-gpio",
- .id = -1,
+ .id = 0,
.dev = {
.platform_data = &balloon3_gpio_led_info,
}
};
+struct gpio_led balloon3_pcf_gpio_leds[] = {
+ {
+ .name = "balloon3:green:led0",
+ .gpio = BALLOON3_PCF_GPIO_LED0,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:green:led1",
+ .gpio = BALLOON3_PCF_GPIO_LED1,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:orange:led2",
+ .gpio = BALLOON3_PCF_GPIO_LED2,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:orange:led3",
+ .gpio = BALLOON3_PCF_GPIO_LED3,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:orange:led4",
+ .gpio = BALLOON3_PCF_GPIO_LED4,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:orange:led5",
+ .gpio = BALLOON3_PCF_GPIO_LED5,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:red:led6",
+ .gpio = BALLOON3_PCF_GPIO_LED6,
+ .active_low = 1,
+ }, {
+ .name = "balloon3:red:led7",
+ .gpio = BALLOON3_PCF_GPIO_LED7,
+ .active_low = 1,
+ },
+};
+
+static struct gpio_led_platform_data balloon3_pcf_gpio_led_info = {
+ .leds = balloon3_pcf_gpio_leds,
+ .num_leds = ARRAY_SIZE(balloon3_pcf_gpio_leds),
+};
+
+static struct platform_device balloon3_pcf_leds = {
+ .name = "leds-gpio",
+ .id = 1,
+ .dev = {
+ .platform_data = &balloon3_pcf_gpio_led_info,
+ }
+};
+
static void __init balloon3_leds_init(void)
{
platform_device_register(&balloon3_leds);
+ platform_device_register(&balloon3_pcf_leds);
}
#else
static inline void balloon3_leds_init(void) {}
@@ -451,6 +502,34 @@ static void __init balloon3_init_irq(void)
}
/******************************************************************************
+ * GPIO expander
+ ******************************************************************************/
+#if defined(CONFIG_GPIO_PCF857X) || defined(CONFIG_GPIO_PCF857X_MODULE)
+static struct pcf857x_platform_data balloon3_pcf857x_pdata = {
+ .gpio_base = BALLOON3_PCF_GPIO_BASE,
+ .n_latch = 0,
+ .setup = NULL,
+ .teardown = NULL,
+ .context = NULL,
+};
+
+static struct i2c_board_info __initdata balloon3_i2c_devs[] = {
+ {
+ I2C_BOARD_INFO("pcf8574a", 0x38),
+ .platform_data = &balloon3_pcf857x_pdata,
+ },
+};
+
+static void __init balloon3_i2c_init(void)
+{
+ pxa_set_i2c_info(NULL);
+ i2c_register_board_info(0, ARRAY_AND_SIZE(balloon3_i2c_devs));
+}
+#else
+static inline void balloon3_i2c_init(void) {}
+#endif
+
+/******************************************************************************
* Machine init
******************************************************************************/
static void __init balloon3_init(void)
@@ -463,8 +542,7 @@ static void __init balloon3_init(void)
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
- pxa_set_i2c_info(NULL);
-
+ balloon3_i2c_init();
balloon3_irda_init();
balloon3_lcd_init();
balloon3_leds_init();
diff --git a/arch/arm/mach-pxa/include/mach/balloon3.h b/arch/arm/mach-pxa/include/mach/balloon3.h
index d5dcf750c1e..238f887ebae 100644
--- a/arch/arm/mach-pxa/include/mach/balloon3.h
+++ b/arch/arm/mach-pxa/include/mach/balloon3.h
@@ -69,6 +69,17 @@ enum balloon3_features {
#define BALLOON3_GPIO_S0_CD (105)
+/* PCF8574A Leds */
+#define BALLOON3_PCF_GPIO_BASE 160
+#define BALLOON3_PCF_GPIO_LED0 (BALLOON3_PCF_GPIO_BASE + 0)
+#define BALLOON3_PCF_GPIO_LED1 (BALLOON3_PCF_GPIO_BASE + 1)
+#define BALLOON3_PCF_GPIO_LED2 (BALLOON3_PCF_GPIO_BASE + 2)
+#define BALLOON3_PCF_GPIO_LED3 (BALLOON3_PCF_GPIO_BASE + 3)
+#define BALLOON3_PCF_GPIO_LED4 (BALLOON3_PCF_GPIO_BASE + 4)
+#define BALLOON3_PCF_GPIO_LED5 (BALLOON3_PCF_GPIO_BASE + 5)
+#define BALLOON3_PCF_GPIO_LED6 (BALLOON3_PCF_GPIO_BASE + 6)
+#define BALLOON3_PCF_GPIO_LED7 (BALLOON3_PCF_GPIO_BASE + 7)
+
/* FPGA Interrupt Mask/Acknowledge Register */
#define BALLOON3_INT_S0_IRQ (1 << 0) /* PCMCIA 0 IRQ */
#define BALLOON3_INT_S0_STSCHG (1 << 1) /* PCMCIA 0 status changed */