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Date: Fri, 04 May 2012 17:37:34 +0200
From: Pali Rohár <pali.rohar@...il.com>
To: linux-omap@...r.kernel.org, linux-kernel@...r.kernel.org,
Lauri Leukkunen <lauri.leukkunen@...ia.com>,
Tony Lindgren <tony@...mide.com>,
Sebastian Reichel <sre@...ian.org>,
Felipe Contreras <felipe.contreras@...ia.com>,
Ameya Palande <ameya.palande@...ia.com>
Subject: rx51: support for lis3lv02d accelerometer
Hi!
Upstream linux kernel has already driver for lis3lv02d accelerometer
in drivers/misc/lis3lv02d. So now can be added also platform support
for nokia rx51. Patch exists for long time in meego obs repository:
https://build.pub.meego.com/package/view_file?file=linux-2.6-omap-rx51-Platform-support-for-lis3lv02d-acceleromet.patch&package=kernel-adaptation-n900&project=CE%3AAdaptation%3AN900
It is possible to include this patch to upstream kernel?
diff --git a/arch/arm/mach-omap2/board-rx51-peripherals.c b/arch/arm/mach-omap2/board-rx51-peripherals.c
index d87ee06..a49801f 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;
}
--
Pali Rohár
pali.rohar@...il.com
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