ARM: OMAP: rx51: Platform support for lis3lv02d accelerometer

Platform support for lis3lv02d accelerometer

Signed-off-by: Ameya Palande <ameya.palande@nokia.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 87 insertions, 1 deletions

diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index d87ee0612098..415a4b7e86b8 100644
--- a/arch/arm/mach-omap2/board-rx51-peripherals.c
+++ b/arch/arm/mach-omap2/board-rx51-peripherals.c
@@ -44,6 +44,7 @@
 #include <linux/leds-lp5523.h>
 
 #include <../drivers/staging/iio/light/tsl2563.h>
+#include <linux/lis3lv02d.h>
 
 #include "mux.h"
 #include "hsmmc.h"
@@ -63,6 +64,9 @@
 #define RX51_TSC2005_RESET_GPIO         104
 #define RX51_TSC2005_IRQ_GPIO           100
 
+#define LIS302_IRQ1_GPIO 181
+#define LIS302_IRQ2_GPIO 180  /* Not yet in use */
+
 /* list all spi devices here */
 enum {
         RX51_SPI_WL1251,
@@ -73,6 +77,77 @@ enum {
 static struct wl12xx_platform_data wl1251_pdata;
 static struct tsc2005_platform_data tsc2005_pdata;
 
+#if defined(CONFIG_SENSORS_LIS3_I2C) || defined(CONFIG_SENSORS_LIS3_I2C_MODULE)
+static int lis302_setup(void)
+{
+        int err;
+        int irq1 = LIS302_IRQ1_GPIO;
+        int irq2 = LIS302_IRQ2_GPIO;
+
+        /* gpio for interrupt pin 1 */
+        err = gpio_request(irq1, "lis3lv02dl_irq1");
+        if (err) {
+                printk(KERN_ERR "lis3lv02dl: gpio request failed\n");
+                goto out;
+        }
+
+        /* gpio for interrupt pin 2 */
+        err = gpio_request(irq2, "lis3lv02dl_irq2");
+        if (err) {
+                gpio_free(irq1);
+                printk(KERN_ERR "lis3lv02dl: gpio request failed\n");
+                goto out;
+        }
+
+        gpio_direction_input(irq1);
+        gpio_direction_input(irq2);
+
+out:
+        return err;
+}
+
+static int lis302_release(void)
+{
+        gpio_free(LIS302_IRQ1_GPIO);
+        gpio_free(LIS302_IRQ2_GPIO);
+
+        return 0;
+}
+
+static struct lis3lv02d_platform_data rx51_lis3lv02d_data = {
+        .click_flags    = LIS3_CLICK_SINGLE_X | LIS3_CLICK_SINGLE_Y |
+                          LIS3_CLICK_SINGLE_Z,
+        /* Limits are 0.5g * value */
+        .click_thresh_x = 8,
+        .click_thresh_y = 8,
+        .click_thresh_z = 10,
+        /* Click must be longer than time limit */
+        .click_time_limit = 9,
+        /* Kind of debounce filter */
+        .click_latency    = 50,
+
+        /* Limits for all axis. millig-value / 18 to get HW values */
+        .wakeup_flags = LIS3_WAKEUP_X_HI | LIS3_WAKEUP_Y_HI,
+        .wakeup_thresh = 800 / 18,
+        .wakeup_flags2 = LIS3_WAKEUP_Z_HI ,
+        .wakeup_thresh2 = 900 / 18,
+
+        .hipass_ctrl = LIS3_HIPASS1_DISABLE | LIS3_HIPASS2_DISABLE,
+
+        /* Interrupt line 2 for click detection, line 1 for thresholds */
+        .irq_cfg = LIS3_IRQ2_CLICK | LIS3_IRQ1_FF_WU_12,
+
+        .axis_x = LIS3_DEV_X,
+        .axis_y = LIS3_INV_DEV_Y,
+        .axis_z = LIS3_INV_DEV_Z,
+        .setup_resources = lis302_setup,
+        .release_resources = lis302_release,
+        .st_min_limits = {-32, 3, 3},
+        .st_max_limits = {-3, 32, 32},
+        .irq2 = OMAP_GPIO_IRQ(LIS302_IRQ2_GPIO),
+};
+#endif
+
 #if defined(CONFIG_SENSORS_TSL2563) || defined(CONFIG_SENSORS_TSL2563_MODULE)
 static struct tsl2563_platform_data rx51_tsl2563_platform_data = {
         .cover_comp_gain = 16,
@@ -950,6 +1025,16 @@ static struct i2c_board_info __initdata rx51_peripherals_i2c_board_info_2[] = {
         }
 };
 
+static struct i2c_board_info __initdata rx51_peripherals_i2c_board_info_3[] = {
+#if defined(CONFIG_SENSORS_LIS3_I2C) || defined(CONFIG_SENSORS_LIS3_I2C_MODULE)
+        {
+                I2C_BOARD_INFO("lis3lv02d", 0x1d),
+                .platform_data = &rx51_lis3lv02d_data,
+                .irq = OMAP_GPIO_IRQ(LIS302_IRQ1_GPIO),
+        },
+#endif
+};
+
 static int __init rx51_i2c_init(void)
 {
         if ((system_rev >= SYSTEM_REV_S_USES_VAUX3 && system_rev < 0x100) ||
@@ -971,7 +1056,8 @@ static int __init rx51_i2c_init(void)
         omap_pmic_init(1, 2200, "twl5030", INT_34XX_SYS_NIRQ, &rx51_twldata);
         omap_register_i2c_bus(2, 100, rx51_peripherals_i2c_board_info_2,
                               ARRAY_SIZE(rx51_peripherals_i2c_board_info_2));
-        omap_register_i2c_bus(3, 400, NULL, 0);
+        omap_register_i2c_bus(3, 400, rx51_peripherals_i2c_board_info_3,
+                              ARRAY_SIZE(rx51_peripherals_i2c_board_info_3));
         return 0;
 }