input: sensor: add stk3x1x light/proximity sensor driver
Add Sensortek (formerly Sitronix) stk3x1x series ambient light and
proximity 3-in-1 sensor driver.
Change-Id: I88f76c1fdc57869b4113b6c27dcbccff979d78fa
Git-commit: c9f105c3ebba39131a037dd2ad8f81ce0f86e949
Git-repo: https://www.codeaurora.org/cgit/external/thundersoft/ihvjointlab/sensor-driver/
[bingzhec@codeaurora.org: added more detail to commit text]
Signed-off-by: Bingzhe Cai <bingzhec@codeaurora.org>
Signed-off-by: Pan Fang <fangpan@codeaurora.org>
diff --git a/drivers/input/misc/stk3x1x.c b/drivers/input/misc/stk3x1x.c
new file mode 100644
index 0000000..eee9a28
--- /dev/null
+++ b/drivers/input/misc/stk3x1x.c
@@ -0,0 +1,2020 @@
+/*
+ * stk3x1x.c - Linux kernel modules for sensortek stk301x, stk321x and stk331x
+ * proximity/ambient light sensor
+ *
+ * Copyright (C) 2012 Lex Hsieh / sensortek <lex_hsieh@sitronix.com.tw> or
+ * <lex_hsieh@sensortek.com.tw>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/slab.h>
+#include <linux/i2c.h>
+#include <linux/mutex.h>
+#include <linux/kdev_t.h>
+#include <linux/fs.h>
+#include <linux/input.h>
+#include <linux/workqueue.h>
+#include <linux/irq.h>
+#include <linux/delay.h>
+#include <linux/sched.h>
+#include <linux/kthread.h>
+#include <linux/errno.h>
+#include <linux/wakelock.h>
+#include <linux/interrupt.h>
+#include <linux/gpio.h>
+#include <linux/fs.h>
+#include <asm/uaccess.h>
+#ifdef CONFIG_HAS_EARLYSUSPEND
+#include <linux/earlysuspend.h>
+#endif
+#include "linux/stk3x1x.h"
+
+#define DRIVER_VERSION "3.4.4ts"
+
+/* Driver Settings */
+#define CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+#ifdef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+#define STK_ALS_CHANGE_THD 20 /* The threshold to trigger ALS interrupt, unit: lux */
+#endif /* #ifdef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD */
+#define STK_INT_PS_MODE 1 /* 1, 2, or 3 */
+#define STK_POLL_PS
+#define STK_POLL_ALS /* ALS interrupt is valid only when STK_PS_INT_MODE = 1 or 4*/
+
+#define STK_DEBUG_PRINTF
+
+/* Define Register Map */
+#define STK_STATE_REG 0x00
+#define STK_PSCTRL_REG 0x01
+#define STK_ALSCTRL_REG 0x02
+#define STK_LEDCTRL_REG 0x03
+#define STK_INT_REG 0x04
+#define STK_WAIT_REG 0x05
+#define STK_THDH1_PS_REG 0x06
+#define STK_THDH2_PS_REG 0x07
+#define STK_THDL1_PS_REG 0x08
+#define STK_THDL2_PS_REG 0x09
+#define STK_THDH1_ALS_REG 0x0A
+#define STK_THDH2_ALS_REG 0x0B
+#define STK_THDL1_ALS_REG 0x0C
+#define STK_THDL2_ALS_REG 0x0D
+#define STK_FLAG_REG 0x10
+#define STK_DATA1_PS_REG 0x11
+#define STK_DATA2_PS_REG 0x12
+#define STK_DATA1_ALS_REG 0x13
+#define STK_DATA2_ALS_REG 0x14
+#define STK_DATA1_OFFSET_REG 0x15
+#define STK_DATA2_OFFSET_REG 0x16
+#define STK_DATA1_IR_REG 0x17
+#define STK_DATA2_IR_REG 0x18
+#define STK_PDT_ID_REG 0x3E
+#define STK_RSRVD_REG 0x3F
+#define STK_SW_RESET_REG 0x80
+
+
+/* Define state reg */
+#define STK_STATE_EN_IRS_SHIFT 7
+#define STK_STATE_EN_AK_SHIFT 6
+#define STK_STATE_EN_ASO_SHIFT 5
+#define STK_STATE_EN_IRO_SHIFT 4
+#define STK_STATE_EN_WAIT_SHIFT 2
+#define STK_STATE_EN_ALS_SHIFT 1
+#define STK_STATE_EN_PS_SHIFT 0
+
+#define STK_STATE_EN_IRS_MASK 0x80
+#define STK_STATE_EN_AK_MASK 0x40
+#define STK_STATE_EN_ASO_MASK 0x20
+#define STK_STATE_EN_IRO_MASK 0x10
+#define STK_STATE_EN_WAIT_MASK 0x04
+#define STK_STATE_EN_ALS_MASK 0x02
+#define STK_STATE_EN_PS_MASK 0x01
+
+/* Define PS ctrl reg */
+#define STK_PS_PRS_SHIFT 6
+#define STK_PS_GAIN_SHIFT 4
+#define STK_PS_IT_SHIFT 0
+
+#define STK_PS_PRS_MASK 0xC0
+#define STK_PS_GAIN_MASK 0x30
+#define STK_PS_IT_MASK 0x0F
+
+/* Define ALS ctrl reg */
+#define STK_ALS_PRS_SHIFT 6
+#define STK_ALS_GAIN_SHIFT 4
+#define STK_ALS_IT_SHIFT 0
+
+#define STK_ALS_PRS_MASK 0xC0
+#define STK_ALS_GAIN_MASK 0x30
+#define STK_ALS_IT_MASK 0x0F
+
+/* Define LED ctrl reg */
+#define STK_LED_IRDR_SHIFT 6
+#define STK_LED_DT_SHIFT 0
+
+#define STK_LED_IRDR_MASK 0xC0
+#define STK_LED_DT_MASK 0x3F
+
+/* Define interrupt reg */
+#define STK_INT_CTRL_SHIFT 7
+#define STK_INT_OUI_SHIFT 4
+#define STK_INT_ALS_SHIFT 3
+#define STK_INT_PS_SHIFT 0
+
+#define STK_INT_CTRL_MASK 0x80
+#define STK_INT_OUI_MASK 0x10
+#define STK_INT_ALS_MASK 0x08
+#define STK_INT_PS_MASK 0x07
+
+#define STK_INT_ALS 0x08
+
+/* Define flag reg */
+#define STK_FLG_ALSDR_SHIFT 7
+#define STK_FLG_PSDR_SHIFT 6
+#define STK_FLG_ALSINT_SHIFT 5
+#define STK_FLG_PSINT_SHIFT 4
+#define STK_FLG_OUI_SHIFT 2
+#define STK_FLG_IR_RDY_SHIFT 1
+#define STK_FLG_NF_SHIFT 0
+
+#define STK_FLG_ALSDR_MASK 0x80
+#define STK_FLG_PSDR_MASK 0x40
+#define STK_FLG_ALSINT_MASK 0x20
+#define STK_FLG_PSINT_MASK 0x10
+#define STK_FLG_OUI_MASK 0x04
+#define STK_FLG_IR_RDY_MASK 0x02
+#define STK_FLG_NF_MASK 0x01
+
+/* misc define */
+#define MIN_ALS_POLL_DELAY_NS 110000000
+
+#define DEVICE_NAME "stk_ps"
+#define ALS_NAME "lightsensor-level"
+#define PS_NAME "proximity"
+
+struct stk3x1x_data {
+ struct i2c_client *client;
+#if (!defined(STK_POLL_PS) || !defined(STK_POLL_ALS))
+ int32_t irq;
+ struct work_struct stk_work;
+ struct workqueue_struct *stk_wq;
+#endif
+ int int_pin;
+ uint8_t wait_reg;
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ struct early_suspend stk_early_suspend;
+#endif
+ uint16_t ps_thd_h;
+ uint16_t ps_thd_l;
+ struct mutex io_lock;
+ struct input_dev *ps_input_dev;
+ int32_t ps_distance_last;
+ bool ps_enabled;
+ struct wake_lock ps_wakelock;
+ struct work_struct stk_ps_work;
+ struct workqueue_struct *stk_ps_wq;
+#ifdef STK_POLL_PS
+ struct wake_lock ps_nosuspend_wl;
+#endif
+ struct input_dev *als_input_dev;
+ int32_t als_lux_last;
+ uint32_t als_transmittance;
+ bool als_enabled;
+ struct hrtimer als_timer;
+ struct hrtimer ps_timer;
+ ktime_t als_poll_delay;
+ ktime_t ps_poll_delay;
+#ifdef STK_POLL_ALS
+ struct work_struct stk_als_work;
+ struct workqueue_struct *stk_als_wq;
+#endif
+};
+
+#if( !defined(CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD))
+static uint32_t lux_threshold_table[] =
+{
+ 3,
+ 10,
+ 40,
+ 65,
+ 145,
+ 300,
+ 550,
+ 930,
+ 1250,
+ 1700,
+};
+
+#define LUX_THD_TABLE_SIZE (sizeof(lux_threshold_table)/sizeof(uint32_t)+1)
+static uint16_t code_threshold_table[LUX_THD_TABLE_SIZE+1];
+#endif
+
+static int32_t stk3x1x_enable_ps(struct stk3x1x_data *ps_data, uint8_t enable);
+static int32_t stk3x1x_enable_als(struct stk3x1x_data *ps_data, uint8_t enable);
+static int32_t stk3x1x_set_ps_thd_l(struct stk3x1x_data *ps_data, uint16_t thd_l);
+static int32_t stk3x1x_set_ps_thd_h(struct stk3x1x_data *ps_data, uint16_t thd_h);
+static int32_t stk3x1x_set_als_thd_l(struct stk3x1x_data *ps_data, uint16_t thd_l);
+static int32_t stk3x1x_set_als_thd_h(struct stk3x1x_data *ps_data, uint16_t thd_h);
+//static int32_t stk3x1x_set_ps_aoffset(struct stk3x1x_data *ps_data, uint16_t offset);
+
+inline uint32_t stk_alscode2lux(struct stk3x1x_data *ps_data, uint32_t alscode)
+{
+ alscode += ((alscode<<7)+(alscode<<3)+(alscode>>1));
+ alscode<<=3;
+ alscode/=ps_data->als_transmittance;
+ return alscode;
+}
+
+inline uint32_t stk_lux2alscode(struct stk3x1x_data *ps_data, uint32_t lux)
+{
+ lux*=ps_data->als_transmittance;
+ lux/=1100;
+ if (unlikely(lux>=(1<<16)))
+ lux = (1<<16) -1;
+ return lux;
+}
+
+#ifndef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+static void stk_init_code_threshold_table(struct stk3x1x_data *ps_data)
+{
+ uint32_t i,j;
+ uint32_t alscode;
+
+ code_threshold_table[0] = 0;
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "alscode[0]=%d\n",0);
+#endif
+ for (i=1,j=0;i<LUX_THD_TABLE_SIZE;i++,j++)
+ {
+ alscode = stk_lux2alscode(ps_data, lux_threshold_table[j]);
+ printk(KERN_INFO "alscode[%d]=%d\n",i,alscode);
+ code_threshold_table[i] = (uint16_t)(alscode);
+ }
+ code_threshold_table[i] = 0xffff;
+ printk(KERN_INFO "alscode[%d]=%d\n",i,alscode);
+}
+
+static uint32_t stk_get_lux_interval_index(uint16_t alscode)
+{
+ uint32_t i;
+ for (i=1;i<=LUX_THD_TABLE_SIZE;i++)
+ {
+ if ((alscode>=code_threshold_table[i-1])&&(alscode<code_threshold_table[i]))
+ {
+ return i;
+ }
+ }
+ return LUX_THD_TABLE_SIZE;
+}
+#else
+inline void stk_als_set_new_thd(struct stk3x1x_data *ps_data, uint16_t alscode)
+{
+ int32_t high_thd,low_thd;
+ high_thd = alscode + stk_lux2alscode(ps_data, STK_ALS_CHANGE_THD);
+ low_thd = alscode - stk_lux2alscode(ps_data, STK_ALS_CHANGE_THD);
+ if (high_thd >= (1<<16))
+ high_thd = (1<<16) -1;
+ if (low_thd <0)
+ low_thd = 0;
+ stk3x1x_set_als_thd_h(ps_data, (uint16_t)high_thd);
+ stk3x1x_set_als_thd_l(ps_data, (uint16_t)low_thd);
+}
+#endif // CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+
+
+static int32_t stk3x1x_init_all_reg(struct stk3x1x_data *ps_data, struct stk3x1x_platform_data *plat_data)
+{
+ int32_t ret;
+ uint8_t w_reg;
+
+ w_reg = plat_data->state_reg;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ ps_data->ps_thd_h = plat_data->ps_thd_h;
+ ps_data->ps_thd_l = plat_data->ps_thd_l;
+
+ w_reg = plat_data->psctrl_reg;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_PSCTRL_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ w_reg = plat_data->alsctrl_reg;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_ALSCTRL_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ w_reg = plat_data->ledctrl_reg;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_LEDCTRL_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ ps_data->wait_reg = plat_data->wait_reg;
+
+ if(ps_data->wait_reg < 2)
+ {
+ printk(KERN_WARNING "%s: wait_reg should be larger than 2, force to write 2\n", __func__);
+ ps_data->wait_reg = 2;
+ }
+ else if (ps_data->wait_reg > 0xFF)
+ {
+ printk(KERN_WARNING "%s: wait_reg should be less than 0xFF, force to write 0xFF\n", __func__);
+ ps_data->wait_reg = 0xFF;
+ }
+ w_reg = plat_data->wait_reg;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_WAIT_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ stk3x1x_set_ps_thd_h(ps_data, ps_data->ps_thd_h);
+ stk3x1x_set_ps_thd_l(ps_data, ps_data->ps_thd_l);
+
+ w_reg = 0;
+#ifndef STK_POLL_PS
+ w_reg |= STK_INT_PS_MODE;
+#else
+ w_reg |= 0x01;
+#endif
+
+#if (!defined(STK_POLL_ALS) && (STK_INT_PS_MODE != 0x02) && (STK_INT_PS_MODE != 0x03))
+ w_reg |= STK_INT_ALS;
+#endif
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_INT_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ return 0;
+}
+
+static int32_t stk3x1x_check_pid(struct stk3x1x_data *ps_data)
+{
+ int32_t err1, err2;
+
+ err1 = i2c_smbus_read_byte_data(ps_data->client,STK_PDT_ID_REG);
+ if (err1 < 0)
+ {
+ printk(KERN_ERR "%s: read i2c error, err=%d\n", __func__, err1);
+ return err1;
+ }
+
+ err2 = i2c_smbus_read_byte_data(ps_data->client,STK_RSRVD_REG);
+ if (err2 < 0)
+ {
+ printk(KERN_ERR "%s: read i2c error, err=%d\n", __func__, err2);
+ return -1;
+ }
+ printk(KERN_INFO "%s: PID=0x%x, RID=0x%x\n", __func__, err1, err2);
+ if(err2 == 0xC0)
+ printk(KERN_INFO "%s: RID=0xC0!!!!!!!!!!!!!\n", __func__);
+
+ return 0;
+}
+
+
+static int32_t stk3x1x_software_reset(struct stk3x1x_data *ps_data)
+{
+ int32_t r;
+ uint8_t w_reg;
+
+ w_reg = 0x7F;
+ r = i2c_smbus_write_byte_data(ps_data->client,STK_WAIT_REG,w_reg);
+ if (r<0)
+ {
+ printk(KERN_ERR "%s: software reset: write i2c error, ret=%d\n", __func__, r);
+ return r;
+ }
+ r = i2c_smbus_read_byte_data(ps_data->client,STK_WAIT_REG);
+ if (w_reg != r)
+ {
+ printk(KERN_ERR "%s: software reset: read-back value is not the same\n", __func__);
+ return -1;
+ }
+
+ r = i2c_smbus_write_byte_data(ps_data->client,STK_SW_RESET_REG,0);
+ if (r<0)
+ {
+ printk(KERN_ERR "%s: software reset: read error after reset\n", __func__);
+ return r;
+ }
+ msleep(1);
+ return 0;
+}
+
+
+static int32_t stk3x1x_set_als_thd_l(struct stk3x1x_data *ps_data, uint16_t thd_l)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&thd_l;
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ return i2c_smbus_write_word_data(ps_data->client,STK_THDL1_ALS_REG,thd_l);
+}
+static int32_t stk3x1x_set_als_thd_h(struct stk3x1x_data *ps_data, uint16_t thd_h)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&thd_h;
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ return i2c_smbus_write_word_data(ps_data->client,STK_THDH1_ALS_REG,thd_h);
+}
+
+static int32_t stk3x1x_set_ps_thd_l(struct stk3x1x_data *ps_data, uint16_t thd_l)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&thd_l;
+
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ ps_data->ps_thd_l = thd_l;
+ return i2c_smbus_write_word_data(ps_data->client,STK_THDL1_PS_REG,thd_l);
+}
+
+static int32_t stk3x1x_set_ps_thd_h(struct stk3x1x_data *ps_data, uint16_t thd_h)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&thd_h;
+
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ ps_data->ps_thd_h = thd_h;
+ return i2c_smbus_write_word_data(ps_data->client,STK_THDH1_PS_REG,thd_h);
+}
+
+/*
+static int32_t stk3x1x_set_ps_foffset(struct stk3x1x_data *ps_data, uint16_t offset)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&offset;
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ return i2c_smbus_write_word_data(ps_data->client,STK_DATA1_OFFSET_REG,offset);
+}
+
+static int32_t stk3x1x_set_ps_aoffset(struct stk3x1x_data *ps_data, uint16_t offset)
+{
+ uint8_t temp;
+ uint8_t* pSrc = (uint8_t*)&offset;
+ int ret;
+ uint8_t w_state_reg;
+ uint8_t re_en;
+
+ ret = i2c_smbus_read_byte_data(ps_data->client, STK_STATE_REG);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ re_en = (ret & STK_STATE_EN_AK_MASK) ? 1: 0;
+ if(re_en)
+ {
+ w_state_reg = (uint8_t)(ret & (~STK_STATE_EN_AK_MASK));
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_state_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ msleep(1);
+ }
+ temp = *pSrc;
+ *pSrc = *(pSrc+1);
+ *(pSrc+1) = temp;
+ ret = i2c_smbus_write_word_data(ps_data->client,0x0E,offset);
+ if(!re_en)
+ return ret;
+
+ w_state_reg |= STK_STATE_EN_AK_MASK;
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_state_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ return 0;
+}
+*/
+
+static inline uint32_t stk3x1x_get_ps_reading(struct stk3x1x_data *ps_data)
+{
+ int32_t word_data, tmp_word_data;
+
+ tmp_word_data = i2c_smbus_read_word_data(ps_data->client,STK_DATA1_PS_REG);
+ if(tmp_word_data < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, tmp_word_data);
+ return tmp_word_data;
+ }
+ word_data = ((tmp_word_data & 0xFF00) >> 8) | ((tmp_word_data & 0x00FF) << 8) ;
+ return word_data;
+}
+
+static int32_t stk3x1x_set_flag(struct stk3x1x_data *ps_data, uint8_t org_flag_reg, uint8_t clr)
+{
+ uint8_t w_flag;
+ w_flag = org_flag_reg | (STK_FLG_ALSINT_MASK | STK_FLG_PSINT_MASK | STK_FLG_OUI_MASK | STK_FLG_IR_RDY_MASK);
+ w_flag &= (~clr);
+ //printk(KERN_INFO "%s: org_flag_reg=0x%x, w_flag = 0x%x\n", __func__, org_flag_reg, w_flag);
+ return i2c_smbus_write_byte_data(ps_data->client,STK_FLAG_REG, w_flag);
+}
+
+static int32_t stk3x1x_get_flag(struct stk3x1x_data *ps_data)
+{
+ return i2c_smbus_read_byte_data(ps_data->client,STK_FLAG_REG);
+}
+
+static int32_t stk3x1x_enable_ps(struct stk3x1x_data *ps_data, uint8_t enable)
+{
+ int32_t ret;
+ uint8_t w_state_reg;
+ uint8_t curr_ps_enable;
+ curr_ps_enable = ps_data->ps_enabled?1:0;
+ if(curr_ps_enable == enable)
+ return 0;
+
+ ret = i2c_smbus_read_byte_data(ps_data->client, STK_STATE_REG);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error, ret=%d\n", __func__, ret);
+ return ret;
+ }
+ w_state_reg = ret;
+ w_state_reg &= ~(STK_STATE_EN_PS_MASK | STK_STATE_EN_WAIT_MASK | 0x60);
+ if(enable)
+ {
+ w_state_reg |= STK_STATE_EN_PS_MASK;
+ if(!(ps_data->als_enabled))
+ w_state_reg |= STK_STATE_EN_WAIT_MASK;
+ }
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_state_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error, ret=%d\n", __func__, ret);
+ return ret;
+ }
+
+ if(enable)
+ {
+#ifdef STK_POLL_PS
+ hrtimer_start(&ps_data->ps_timer, ps_data->ps_poll_delay, HRTIMER_MODE_REL);
+ ps_data->ps_distance_last = -1;
+#endif
+ ps_data->ps_enabled = true;
+#ifndef STK_POLL_PS
+#ifndef STK_POLL_ALS
+ if(!(ps_data->als_enabled))
+#endif /* #ifndef STK_POLL_ALS */
+ enable_irq(ps_data->irq);
+ msleep(1);
+ ret = stk3x1x_get_flag(ps_data);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: read i2c error, ret=%d\n", __func__, ret);
+ return ret;
+ }
+
+ near_far_state = ret & STK_FLG_NF_MASK;
+ ps_data->ps_distance_last = near_far_state;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, near_far_state);
+ input_sync(ps_data->ps_input_dev);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+ reading = stk3x1x_get_ps_reading(ps_data);
+ printk(KERN_INFO "%s: ps input event=%d, ps code = %d\n",__func__, near_far_state, reading);
+#endif /* #ifndef STK_POLL_PS */
+ }
+ else
+ {
+#ifdef STK_POLL_PS
+ hrtimer_cancel(&ps_data->ps_timer);
+#else
+#ifndef STK_POLL_ALS
+ if(!(ps_data->als_enabled))
+#endif
+ disable_irq(ps_data->irq);
+#endif
+ ps_data->ps_enabled = false;
+ }
+ return ret;
+}
+
+static int32_t stk3x1x_enable_als(struct stk3x1x_data *ps_data, uint8_t enable)
+{
+ int32_t ret;
+ uint8_t w_state_reg;
+ uint8_t curr_als_enable = (ps_data->als_enabled)?1:0;
+
+ if(curr_als_enable == enable)
+ return 0;
+
+#ifndef STK_POLL_ALS
+ if (enable)
+ {
+ stk3x1x_set_als_thd_h(ps_data, 0x0000);
+ stk3x1x_set_als_thd_l(ps_data, 0xFFFF);
+ }
+#endif
+ ret = i2c_smbus_read_byte_data(ps_data->client, STK_STATE_REG);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ w_state_reg = (uint8_t)(ret & (~(STK_STATE_EN_ALS_MASK | STK_STATE_EN_WAIT_MASK)));
+ if(enable)
+ w_state_reg |= STK_STATE_EN_ALS_MASK;
+ else if (ps_data->ps_enabled)
+ w_state_reg |= STK_STATE_EN_WAIT_MASK;
+
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_state_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ if (enable)
+ {
+ ps_data->als_enabled = true;
+#ifdef STK_POLL_ALS
+ hrtimer_start(&ps_data->als_timer, ps_data->als_poll_delay, HRTIMER_MODE_REL);
+#else
+#ifndef STK_POLL_PS
+ if(!(ps_data->ps_enabled))
+#endif
+ enable_irq(ps_data->irq);
+#endif
+ }
+ else
+ {
+ ps_data->als_enabled = false;
+#ifdef STK_POLL_ALS
+ hrtimer_cancel(&ps_data->als_timer);
+#else
+#ifndef STK_POLL_PS
+ if(!(ps_data->ps_enabled))
+#endif
+ disable_irq(ps_data->irq);
+#endif
+ }
+ return ret;
+}
+
+static inline int32_t stk3x1x_get_als_reading(struct stk3x1x_data *ps_data)
+{
+ int32_t word_data, tmp_word_data;
+ tmp_word_data = i2c_smbus_read_word_data(ps_data->client, STK_DATA1_ALS_REG);
+ if(tmp_word_data < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, tmp_word_data);
+ return tmp_word_data;
+ }
+ word_data = ((tmp_word_data & 0xFF00) >> 8) | ((tmp_word_data & 0x00FF) << 8) ;
+ return word_data;
+}
+
+static int32_t stk3x1x_get_ir_reading(struct stk3x1x_data *ps_data)
+{
+ int32_t word_data, tmp_word_data;
+ int32_t ret;
+ uint8_t w_reg, retry = 0;
+
+ if(ps_data->ps_enabled)
+ {
+ stk3x1x_enable_ps(ps_data, 0);
+ ps_data->ps_enabled = true;
+ }
+ ret = i2c_smbus_read_byte_data(ps_data->client, STK_STATE_REG);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ w_reg = (uint8_t)(ret & (~STK_STATE_EN_IRS_MASK));
+ w_reg |= STK_STATE_EN_IRS_MASK;
+
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ msleep(100);
+
+ do
+ {
+ msleep(50);
+ ret = stk3x1x_get_flag(ps_data);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ retry++;
+ }while(retry < 5 && ((ret&STK_FLG_IR_RDY_MASK) == 0));
+
+ if(retry == 5)
+ {
+ printk(KERN_ERR "%s: ir data is not ready for 300ms\n", __func__);
+ return -EINVAL;
+ }
+
+ ret = stk3x1x_get_flag(ps_data);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ ret = stk3x1x_set_flag(ps_data, ret, STK_FLG_IR_RDY_MASK);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ tmp_word_data = i2c_smbus_read_word_data(ps_data->client, STK_DATA1_IR_REG);
+ if(tmp_word_data < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, tmp_word_data);
+ return tmp_word_data;
+ }
+ word_data = ((tmp_word_data & 0xFF00) >> 8) | ((tmp_word_data & 0x00FF) << 8) ;
+
+ if(ps_data->ps_enabled)
+ stk3x1x_enable_ps(ps_data, 1);
+ return word_data;
+}
+
+
+static ssize_t stk_als_code_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t reading;
+
+ reading = stk3x1x_get_als_reading(ps_data);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", reading);
+}
+
+
+static ssize_t stk_als_enable_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t enable, ret;
+
+ mutex_lock(&ps_data->io_lock);
+ enable = (ps_data->als_enabled)?1:0;
+ mutex_unlock(&ps_data->io_lock);
+ ret = i2c_smbus_read_byte_data(ps_data->client,STK_STATE_REG);
+ ret = (ret & STK_STATE_EN_ALS_MASK)?1:0;
+
+ if(enable != ret)
+ printk(KERN_ERR "%s: driver and sensor mismatch! driver_enable=0x%x, sensor_enable=%x\n", __func__, enable, ret);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+}
+
+static ssize_t stk_als_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint8_t en;
+ if (sysfs_streq(buf, "1"))
+ en = 1;
+ else if (sysfs_streq(buf, "0"))
+ en = 0;
+ else
+ {
+ printk(KERN_ERR "%s, invalid value %d\n", __func__, *buf);
+ return -EINVAL;
+ }
+ printk(KERN_INFO "%s: Enable ALS : %d\n", __func__, en);
+ mutex_lock(&ps_data->io_lock);
+ stk3x1x_enable_als(ps_data, en);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_als_lux_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t als_reading;
+ uint32_t als_lux;
+ als_reading = stk3x1x_get_als_reading(ps_data);
+ mutex_lock(&ps_data->io_lock);
+ als_lux = stk_alscode2lux(ps_data, als_reading);
+ mutex_unlock(&ps_data->io_lock);
+ return scnprintf(buf, PAGE_SIZE, "%d lux\n", als_lux);
+}
+
+static ssize_t stk_als_lux_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 16, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ ps_data->als_lux_last = value;
+ input_report_abs(ps_data->als_input_dev, ABS_MISC, value);
+ input_sync(ps_data->als_input_dev);
+ mutex_unlock(&ps_data->io_lock);
+ printk(KERN_INFO "%s: als input event %ld lux\n",__func__, value);
+
+ return size;
+}
+
+
+static ssize_t stk_als_transmittance_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t transmittance;
+ mutex_lock(&ps_data->io_lock);
+ transmittance = ps_data->als_transmittance;
+ mutex_unlock(&ps_data->io_lock);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", transmittance);
+}
+
+
+static ssize_t stk_als_transmittance_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ ps_data->als_transmittance = value;
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_als_delay_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ return scnprintf(buf, PAGE_SIZE, "%lld\n", ktime_to_ns(ps_data->als_poll_delay));
+}
+
+
+static ssize_t stk_als_delay_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ uint64_t value = 0;
+ int ret;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ ret = strict_strtoull(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoull failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: set als poll delay=%lld\n", __func__, value);
+#endif
+ if(value < MIN_ALS_POLL_DELAY_NS)
+ {
+ printk(KERN_ERR "%s: delay is too small\n", __func__);
+ value = MIN_ALS_POLL_DELAY_NS;
+ }
+ mutex_lock(&ps_data->io_lock);
+ if(value != ktime_to_ns(ps_data->als_poll_delay))
+ ps_data->als_poll_delay = ns_to_ktime(value);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_als_ir_code_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t reading;
+ reading = stk3x1x_get_ir_reading(ps_data);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", reading);
+}
+
+static ssize_t stk_ps_code_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint32_t reading;
+ reading = stk3x1x_get_ps_reading(ps_data);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", reading);
+}
+
+static ssize_t stk_ps_enable_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t enable, ret;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+
+ mutex_lock(&ps_data->io_lock);
+ enable = (ps_data->ps_enabled)?1:0;
+ mutex_unlock(&ps_data->io_lock);
+ ret = i2c_smbus_read_byte_data(ps_data->client,STK_STATE_REG);
+ ret = (ret & STK_STATE_EN_PS_MASK)?1:0;
+
+ if(enable != ret)
+ printk(KERN_ERR "%s: driver and sensor mismatch! driver_enable=0x%x, sensor_enable=%x\n", __func__, enable, ret);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+}
+
+static ssize_t stk_ps_enable_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint8_t en;
+ if (sysfs_streq(buf, "1"))
+ en = 1;
+ else if (sysfs_streq(buf, "0"))
+ en = 0;
+ else
+ {
+ printk(KERN_ERR "%s, invalid value %d\n", __func__, *buf);
+ return -EINVAL;
+ }
+ printk(KERN_INFO "%s: Enable PS : %d\n", __func__, en);
+ mutex_lock(&ps_data->io_lock);
+ stk3x1x_enable_ps(ps_data, en);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_ps_enable_aso_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t ret;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+
+ ret = i2c_smbus_read_byte_data(ps_data->client,STK_STATE_REG);
+ ret = (ret & STK_STATE_EN_ASO_MASK)?1:0;
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ret);
+}
+
+static ssize_t stk_ps_enable_aso_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint8_t en;
+ int32_t ret;
+ uint8_t w_state_reg;
+
+ if (sysfs_streq(buf, "1"))
+ en = 1;
+ else if (sysfs_streq(buf, "0"))
+ en = 0;
+ else
+ {
+ printk(KERN_ERR "%s, invalid value %d\n", __func__, *buf);
+ return -EINVAL;
+ }
+ printk(KERN_INFO "%s: Enable PS ASO : %d\n", __func__, en);
+
+ ret = i2c_smbus_read_byte_data(ps_data->client, STK_STATE_REG);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ w_state_reg = (uint8_t)(ret & (~STK_STATE_EN_ASO_MASK));
+ if(en)
+ w_state_reg |= STK_STATE_EN_ASO_MASK;
+
+ ret = i2c_smbus_write_byte_data(ps_data->client, STK_STATE_REG, w_state_reg);
+ if (ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+
+ return size;
+}
+
+
+static ssize_t stk_ps_offset_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t word_data, tmp_word_data;
+
+ tmp_word_data = i2c_smbus_read_word_data(ps_data->client, STK_DATA1_OFFSET_REG);
+ if(tmp_word_data < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, tmp_word_data);
+ return tmp_word_data;
+ }
+ word_data = ((tmp_word_data & 0xFF00) >> 8) | ((tmp_word_data & 0x00FF) << 8) ;
+ return scnprintf(buf, PAGE_SIZE, "%d\n", word_data);
+}
+
+static ssize_t stk_ps_offset_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ uint16_t offset;
+
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ if(value > 65535)
+ {
+ printk(KERN_ERR "%s: invalid value, offset=%ld\n", __func__, value);
+ return -EINVAL;
+ }
+
+ offset = (uint16_t) ((value&0x00FF) << 8) | ((value&0xFF00) >>8);
+ ret = i2c_smbus_write_word_data(ps_data->client,STK_DATA1_OFFSET_REG,offset);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s: write i2c error\n", __func__);
+ return ret;
+ }
+ return size;
+}
+
+
+static ssize_t stk_ps_distance_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ int32_t dist=1, ret;
+
+ mutex_lock(&ps_data->io_lock);
+ ret = stk3x1x_get_flag(ps_data);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s: stk3x1x_get_flag failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ dist = (ret & STK_FLG_NF_MASK)?1:0;
+
+ ps_data->ps_distance_last = dist;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, dist);
+ input_sync(ps_data->ps_input_dev);
+ mutex_unlock(&ps_data->io_lock);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+ printk(KERN_INFO "%s: ps input event %d cm\n",__func__, dist);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", dist);
+}
+
+
+static ssize_t stk_ps_distance_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ ps_data->ps_distance_last = value;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, value);
+ input_sync(ps_data->ps_input_dev);
+ mutex_unlock(&ps_data->io_lock);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+ printk(KERN_INFO "%s: ps input event %ld cm\n",__func__, value);
+ return size;
+}
+
+
+static ssize_t stk_ps_code_thd_l_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t ps_thd_l1_reg, ps_thd_l2_reg;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ mutex_lock(&ps_data->io_lock);
+ ps_thd_l1_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDL1_PS_REG);
+ if(ps_thd_l1_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, ps_thd_l1_reg);
+ return -EINVAL;
+ }
+ ps_thd_l2_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDL2_PS_REG);
+ if(ps_thd_l2_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, ps_thd_l2_reg);
+ return -EINVAL;
+ }
+ mutex_unlock(&ps_data->io_lock);
+ ps_thd_l1_reg = ps_thd_l1_reg<<8 | ps_thd_l2_reg;
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ps_thd_l1_reg);
+}
+
+
+static ssize_t stk_ps_code_thd_l_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ stk3x1x_set_ps_thd_l(ps_data, value);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_ps_code_thd_h_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t ps_thd_h1_reg, ps_thd_h2_reg;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ mutex_lock(&ps_data->io_lock);
+ ps_thd_h1_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDH1_PS_REG);
+ if(ps_thd_h1_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, ps_thd_h1_reg);
+ return -EINVAL;
+ }
+ ps_thd_h2_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDH2_PS_REG);
+ if(ps_thd_h2_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, ps_thd_h2_reg);
+ return -EINVAL;
+ }
+ mutex_unlock(&ps_data->io_lock);
+ ps_thd_h1_reg = ps_thd_h1_reg<<8 | ps_thd_h2_reg;
+ return scnprintf(buf, PAGE_SIZE, "%d\n", ps_thd_h1_reg);
+}
+
+
+static ssize_t stk_ps_code_thd_h_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ stk3x1x_set_ps_thd_h(ps_data, value);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+#if 0
+static ssize_t stk_als_lux_thd_l_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t als_thd_l0_reg,als_thd_l1_reg;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint32_t als_lux;
+
+ mutex_lock(&ps_data->io_lock);
+ als_thd_l0_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDL1_ALS_REG);
+ als_thd_l1_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDL2_ALS_REG);
+ if(als_thd_l0_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, als_thd_l0_reg);
+ return -EINVAL;
+ }
+ if(als_thd_l1_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, als_thd_l1_reg);
+ return -EINVAL;
+ }
+ als_thd_l0_reg|=(als_thd_l1_reg<<8);
+ als_lux = stk_alscode2lux(ps_data, als_thd_l0_reg);
+ mutex_unlock(&ps_data->io_lock);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", als_lux);
+}
+
+
+static ssize_t stk_als_lux_thd_l_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ value = stk_lux2alscode(ps_data, value);
+ stk3x1x_set_als_thd_l(ps_data, value);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+
+static ssize_t stk_als_lux_thd_h_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t als_thd_h0_reg,als_thd_h1_reg;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ uint32_t als_lux;
+
+ mutex_lock(&ps_data->io_lock);
+ als_thd_h0_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDH1_ALS_REG);
+ als_thd_h1_reg = i2c_smbus_read_byte_data(ps_data->client,STK_THDH2_ALS_REG);
+ if(als_thd_h0_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, als_thd_h0_reg);
+ return -EINVAL;
+ }
+ if(als_thd_h1_reg < 0)
+ {
+ printk(KERN_ERR "%s fail, err=0x%x", __func__, als_thd_h1_reg);
+ return -EINVAL;
+ }
+ als_thd_h0_reg|=(als_thd_h1_reg<<8);
+ als_lux = stk_alscode2lux(ps_data, als_thd_h0_reg);
+ mutex_unlock(&ps_data->io_lock);
+ return scnprintf(buf, PAGE_SIZE, "%d\n", als_lux);
+}
+
+
+static ssize_t stk_als_lux_thd_h_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ unsigned long value = 0;
+ int ret;
+ ret = strict_strtoul(buf, 10, &value);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ mutex_lock(&ps_data->io_lock);
+ value = stk_lux2alscode(ps_data, value);
+ stk3x1x_set_als_thd_h(ps_data, value);
+ mutex_unlock(&ps_data->io_lock);
+ return size;
+}
+#endif
+
+
+static ssize_t stk_all_reg_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ int32_t ps_reg[27];
+ uint8_t cnt;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+ mutex_lock(&ps_data->io_lock);
+ for(cnt=0;cnt<25;cnt++)
+ {
+ ps_reg[cnt] = i2c_smbus_read_byte_data(ps_data->client, (cnt));
+ if(ps_reg[cnt] < 0)
+ {
+ mutex_unlock(&ps_data->io_lock);
+ printk(KERN_ERR "stk_all_reg_show:i2c_smbus_read_byte_data fail, ret=%d", ps_reg[cnt]);
+ return -EINVAL;
+ }
+ else
+ {
+ printk(KERN_INFO "reg[0x%2X]=0x%2X\n", cnt, ps_reg[cnt]);
+ }
+ }
+ ps_reg[cnt] = i2c_smbus_read_byte_data(ps_data->client, STK_PDT_ID_REG);
+ if(ps_reg[cnt] < 0)
+ {
+ mutex_unlock(&ps_data->io_lock);
+ printk( KERN_ERR "all_reg_show:i2c_smbus_read_byte_data fail, ret=%d", ps_reg[cnt]);
+ return -EINVAL;
+ }
+ printk( KERN_INFO "reg[0x%x]=0x%2X\n", STK_PDT_ID_REG, ps_reg[cnt]);
+ cnt++;
+ ps_reg[cnt] = i2c_smbus_read_byte_data(ps_data->client, STK_RSRVD_REG);
+ if(ps_reg[cnt] < 0)
+ {
+ mutex_unlock(&ps_data->io_lock);
+ printk( KERN_ERR "all_reg_show:i2c_smbus_read_byte_data fail, ret=%d", ps_reg[cnt]);
+ return -EINVAL;
+ }
+ printk( KERN_INFO "reg[0x%x]=0x%2X\n", STK_RSRVD_REG, ps_reg[cnt]);
+ mutex_unlock(&ps_data->io_lock);
+
+ return scnprintf(buf, PAGE_SIZE, "%2X %2X %2X %2X %2X,%2X %2X %2X %2X %2X,%2X %2X %2X %2X %2X,%2X %2X %2X %2X %2X,%2X %2X %2X %2X %2X,%2X %2X\n",
+ ps_reg[0], ps_reg[1], ps_reg[2], ps_reg[3], ps_reg[4], ps_reg[5], ps_reg[6], ps_reg[7], ps_reg[8],
+ ps_reg[9], ps_reg[10], ps_reg[11], ps_reg[12], ps_reg[13], ps_reg[14], ps_reg[15], ps_reg[16], ps_reg[17],
+ ps_reg[18], ps_reg[19], ps_reg[20], ps_reg[21], ps_reg[22], ps_reg[23], ps_reg[24], ps_reg[25], ps_reg[26]);
+}
+
+static ssize_t stk_recv_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return 0;
+}
+
+
+static ssize_t stk_recv_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ unsigned long value = 0;
+ int ret;
+ int32_t recv_data;
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+
+ if((ret = strict_strtoul(buf, 16, &value)) < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ recv_data = i2c_smbus_read_byte_data(ps_data->client,value);
+ printk("%s: reg 0x%x=0x%x\n", __func__, (int)value, recv_data);
+ return size;
+}
+
+
+static ssize_t stk_send_show(struct device *dev, struct device_attribute *attr, char *buf)
+{
+ return 0;
+}
+
+
+static ssize_t stk_send_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t size)
+{
+ int addr, cmd;
+ u8 addr_u8, cmd_u8;
+ int32_t ret, i;
+ char *token[10];
+ struct stk3x1x_data *ps_data = dev_get_drvdata(dev);
+
+ for (i = 0; i < 2; i++)
+ token[i] = strsep((char **)&buf, " ");
+ if((ret = strict_strtoul(token[0], 16, (unsigned long *)&(addr))) < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ if((ret = strict_strtoul(token[1], 16, (unsigned long *)&(cmd))) < 0)
+ {
+ printk(KERN_ERR "%s:strict_strtoul failed, ret=0x%x\n", __func__, ret);
+ return ret;
+ }
+ printk(KERN_INFO "%s: write reg 0x%x=0x%x\n", __func__, addr, cmd);
+
+ addr_u8 = (u8) addr;
+ cmd_u8 = (u8) cmd;
+ //mutex_lock(&ps_data->io_lock);
+ ret = i2c_smbus_write_byte_data(ps_data->client,addr_u8,cmd_u8);
+ //mutex_unlock(&ps_data->io_lock);
+ if (0 != ret)
+ {
+ printk(KERN_ERR "%s: i2c_smbus_write_byte_data fail\n", __func__);
+ return ret;
+ }
+
+ return size;
+}
+
+
+static struct device_attribute als_enable_attribute = __ATTR(enable,0664,stk_als_enable_show,stk_als_enable_store);
+static struct device_attribute als_lux_attribute = __ATTR(lux,0664,stk_als_lux_show,stk_als_lux_store);
+static struct device_attribute als_code_attribute = __ATTR(code, 0444, stk_als_code_show, NULL);
+static struct device_attribute als_transmittance_attribute = __ATTR(transmittance,0664,stk_als_transmittance_show,stk_als_transmittance_store);
+static struct device_attribute als_poll_delay_attribute = __ATTR(delay,0664,stk_als_delay_show,stk_als_delay_store);
+static struct device_attribute als_ir_code_attribute = __ATTR(ircode,0444,stk_als_ir_code_show,NULL);
+
+
+static struct attribute *stk_als_attrs [] =
+{
+ &als_enable_attribute.attr,
+ &als_lux_attribute.attr,
+ &als_code_attribute.attr,
+ &als_transmittance_attribute.attr,
+ &als_poll_delay_attribute.attr,
+ &als_ir_code_attribute.attr,
+ NULL
+};
+
+static struct attribute_group stk_als_attribute_group = {
+ .name = "driver",
+ .attrs = stk_als_attrs,
+};
+
+
+static struct device_attribute ps_enable_attribute = __ATTR(enable,0664,stk_ps_enable_show,stk_ps_enable_store);
+static struct device_attribute ps_enable_aso_attribute = __ATTR(enableaso,0664,stk_ps_enable_aso_show,stk_ps_enable_aso_store);
+static struct device_attribute ps_distance_attribute = __ATTR(distance,0664,stk_ps_distance_show, stk_ps_distance_store);
+static struct device_attribute ps_offset_attribute = __ATTR(offset,0664,stk_ps_offset_show, stk_ps_offset_store);
+static struct device_attribute ps_code_attribute = __ATTR(code, 0444, stk_ps_code_show, NULL);
+static struct device_attribute ps_code_thd_l_attribute = __ATTR(codethdl,0664,stk_ps_code_thd_l_show,stk_ps_code_thd_l_store);
+static struct device_attribute ps_code_thd_h_attribute = __ATTR(codethdh,0664,stk_ps_code_thd_h_show,stk_ps_code_thd_h_store);
+static struct device_attribute recv_attribute = __ATTR(recv,0664,stk_recv_show,stk_recv_store);
+static struct device_attribute send_attribute = __ATTR(send,0664,stk_send_show, stk_send_store);
+static struct device_attribute all_reg_attribute = __ATTR(allreg, 0444, stk_all_reg_show, NULL);
+
+static struct attribute *stk_ps_attrs [] =
+{
+ &ps_enable_attribute.attr,
+ &ps_enable_aso_attribute.attr,
+ &ps_distance_attribute.attr,
+ &ps_offset_attribute.attr,
+ &ps_code_attribute.attr,
+ &ps_code_thd_l_attribute.attr,
+ &ps_code_thd_h_attribute.attr,
+ &recv_attribute.attr,
+ &send_attribute.attr,
+ &all_reg_attribute.attr,
+ NULL
+};
+
+static struct attribute_group stk_ps_attribute_group = {
+ .name = "driver",
+ .attrs = stk_ps_attrs,
+};
+
+#ifdef STK_POLL_ALS
+static enum hrtimer_restart stk_als_timer_func(struct hrtimer *timer)
+{
+ struct stk3x1x_data *ps_data = container_of(timer, struct stk3x1x_data, als_timer);
+ queue_work(ps_data->stk_als_wq, &ps_data->stk_als_work);
+ hrtimer_forward_now(&ps_data->als_timer, ps_data->als_poll_delay);
+ return HRTIMER_RESTART;
+}
+
+static void stk_als_work_func(struct work_struct *work)
+{
+ struct stk3x1x_data *ps_data = container_of(work, struct stk3x1x_data, stk_als_work);
+ int32_t reading;
+
+ mutex_lock(&ps_data->io_lock);
+ reading = stk3x1x_get_als_reading(ps_data);
+ if(reading < 0)
+ return;
+ ps_data->als_lux_last = stk_alscode2lux(ps_data, reading);
+ input_report_abs(ps_data->als_input_dev, ABS_MISC, ps_data->als_lux_last);
+ input_sync(ps_data->als_input_dev);
+ mutex_unlock(&ps_data->io_lock);
+ //printk(KERN_INFO "%s: als input event %d lux\n",__func__, ps_data->als_lux_last);
+}
+#endif
+
+static enum hrtimer_restart stk_ps_timer_func(struct hrtimer *timer)
+{
+ struct stk3x1x_data *ps_data = container_of(timer, struct stk3x1x_data, ps_timer);
+ queue_work(ps_data->stk_ps_wq, &ps_data->stk_ps_work);
+#ifdef STK_POLL_PS
+ hrtimer_forward_now(&ps_data->ps_timer, ps_data->ps_poll_delay);
+ return HRTIMER_RESTART;
+#else
+ hrtimer_cancel(&ps_data->ps_timer);
+ return HRTIMER_NORESTART;
+#endif
+}
+
+static void stk_ps_work_func(struct work_struct *work)
+{
+ struct stk3x1x_data *ps_data = container_of(work, struct stk3x1x_data, stk_ps_work);
+ uint32_t reading;
+ int32_t near_far_state;
+ uint8_t org_flag_reg;
+ int32_t ret;
+ uint8_t disable_flag = 0;
+ mutex_lock(&ps_data->io_lock);
+
+ org_flag_reg = stk3x1x_get_flag(ps_data);
+ if(org_flag_reg < 0)
+ {
+ printk(KERN_ERR "%s: get_status_reg fail, ret=%d", __func__, org_flag_reg);
+ goto err_i2c_rw;
+ }
+ near_far_state = (org_flag_reg & STK_FLG_NF_MASK)?1:0;
+ reading = stk3x1x_get_ps_reading(ps_data);
+ if(ps_data->ps_distance_last != near_far_state)
+ {
+ ps_data->ps_distance_last = near_far_state;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, near_far_state);
+ input_sync(ps_data->ps_input_dev);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: ps input event %d cm, ps code = %d\n",__func__, near_far_state, reading);
+#endif
+ }
+ ret = stk3x1x_set_flag(ps_data, org_flag_reg, disable_flag);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:stk3x1x_set_flag fail, ret=%d\n", __func__, ret);
+ goto err_i2c_rw;
+ }
+
+ mutex_unlock(&ps_data->io_lock);
+ return;
+
+err_i2c_rw:
+ mutex_unlock(&ps_data->io_lock);
+ msleep(30);
+ return;
+}
+
+
+#if (!defined(STK_POLL_PS) || !defined(STK_POLL_ALS))
+static void stk_work_func(struct work_struct *work)
+{
+ uint32_t reading;
+#if ((STK_INT_PS_MODE != 0x03) && (STK_INT_PS_MODE != 0x02))
+ int32_t ret;
+ uint8_t disable_flag = 0;
+ uint8_t org_flag_reg;
+#endif /* #if ((STK_INT_PS_MODE != 0x03) && (STK_INT_PS_MODE != 0x02)) */
+
+#ifndef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+ uint32_t nLuxIndex;
+#endif
+ struct stk3x1x_data *ps_data = container_of(work, struct stk3x1x_data, stk_work);
+ int32_t near_far_state;
+
+ mutex_lock(&ps_data->io_lock);
+
+#if (STK_INT_PS_MODE == 0x03)
+ near_far_state = gpio_get_value(ps_data->int_pin);
+#elif (STK_INT_PS_MODE == 0x02)
+ near_far_state = !(gpio_get_value(ps_data->int_pin));
+#endif
+
+#if ((STK_INT_PS_MODE == 0x03) || (STK_INT_PS_MODE == 0x02))
+ ps_data->ps_distance_last = near_far_state;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, near_far_state);
+ input_sync(ps_data->ps_input_dev);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+ reading = stk3x1x_get_ps_reading(ps_data);
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: ps input event %d cm, ps code = %d\n",__func__, near_far_state, reading);
+#endif
+#else
+ /* mode 0x01 or 0x04 */
+ org_flag_reg = stk3x1x_get_flag(ps_data);
+ if(org_flag_reg < 0)
+ {
+ printk(KERN_ERR "%s: get_status_reg fail, org_flag_reg=%d", __func__, org_flag_reg);
+ goto err_i2c_rw;
+ }
+
+ if (org_flag_reg & STK_FLG_ALSINT_MASK)
+ {
+ disable_flag |= STK_FLG_ALSINT_MASK;
+ reading = stk3x1x_get_als_reading(ps_data);
+ if(reading < 0)
+ {
+ printk(KERN_ERR "%s: stk3x1x_get_als_reading fail, ret=%d", __func__, reading);
+ goto err_i2c_rw;
+ }
+#ifndef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+ nLuxIndex = stk_get_lux_interval_index(reading);
+ stk3x1x_set_als_thd_h(ps_data, code_threshold_table[nLuxIndex]);
+ stk3x1x_set_als_thd_l(ps_data, code_threshold_table[nLuxIndex-1]);
+#else
+ stk_als_set_new_thd(ps_data, reading);
+#endif //CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+ ps_data->als_lux_last = stk_alscode2lux(ps_data, reading);
+ input_report_abs(ps_data->als_input_dev, ABS_MISC, ps_data->als_lux_last);
+ input_sync(ps_data->als_input_dev);
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: als input event %d lux\n",__func__, ps_data->als_lux_last);
+#endif
+ }
+ if (org_flag_reg & STK_FLG_PSINT_MASK)
+ {
+ disable_flag |= STK_FLG_PSINT_MASK;
+ near_far_state = (org_flag_reg & STK_FLG_NF_MASK)?1:0;
+
+ ps_data->ps_distance_last = near_far_state;
+ input_report_abs(ps_data->ps_input_dev, ABS_DISTANCE, near_far_state);
+ input_sync(ps_data->ps_input_dev);
+ wake_lock_timeout(&ps_data->ps_wakelock, 3*HZ);
+ reading = stk3x1x_get_ps_reading(ps_data);
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: ps input event=%d, ps code = %d\n",__func__, near_far_state, reading);
+#endif
+ }
+
+ ret = stk3x1x_set_flag(ps_data, org_flag_reg, disable_flag);
+ if(ret < 0)
+ {
+ printk(KERN_ERR "%s:reset_int_flag fail, ret=%d\n", __func__, ret);
+ goto err_i2c_rw;
+ }
+#endif
+
+ msleep(1);
+ enable_irq(ps_data->irq);
+ mutex_unlock(&ps_data->io_lock);
+ return;
+
+err_i2c_rw:
+ mutex_unlock(&ps_data->io_lock);
+ msleep(30);
+ enable_irq(ps_data->irq);
+ return;
+}
+#endif
+
+#if (!defined(STK_POLL_PS) || !defined(STK_POLL_ALS))
+static irqreturn_t stk_oss_irq_handler(int irq, void *data)
+{
+ struct stk3x1x_data *pData = data;
+ disable_irq_nosync(irq);
+ queue_work(pData->stk_wq,&pData->stk_work);
+ return IRQ_HANDLED;
+}
+#endif /* #if (!defined(STK_POLL_PS) || !defined(STK_POLL_ALS)) */
+static int32_t stk3x1x_init_all_setting(struct i2c_client *client, struct stk3x1x_platform_data *plat_data)
+{
+ int32_t ret;
+ struct stk3x1x_data *ps_data = i2c_get_clientdata(client);
+
+ mutex_lock(&ps_data->io_lock);
+ ps_data->als_enabled = false;
+ ps_data->ps_enabled = false;
+ mutex_unlock(&ps_data->io_lock);
+
+ ret = stk3x1x_software_reset(ps_data);
+ if(ret < 0)
+ return ret;
+
+ stk3x1x_check_pid(ps_data);
+ if(ret < 0)
+ return ret;
+
+ ret = stk3x1x_init_all_reg(ps_data, plat_data);
+ if(ret < 0)
+ return ret;
+#ifndef CONFIG_STK_PS_ALS_USE_CHANGE_THRESHOLD
+ stk_init_code_threshold_table(ps_data);
+#endif
+ return 0;
+}
+
+#if (!defined(STK_POLL_PS) || !defined(STK_POLL_ALS))
+static int stk3x1x_setup_irq(struct i2c_client *client)
+{
+ int irq, err = -EIO;
+ struct stk3x1x_data *ps_data = i2c_get_clientdata(client);
+
+ irq = gpio_to_irq(ps_data->int_pin);
+#ifdef STK_DEBUG_PRINTF
+ printk(KERN_INFO "%s: int pin #=%d, irq=%d\n",__func__, ps_data->int_pin, irq);
+#endif
+ if (irq <= 0)
+ {
+ printk(KERN_ERR "irq number is not specified, irq # = %d, int pin=%d\n",irq, ps_data->int_pin);
+ return irq;
+ }
+ ps_data->irq = irq;
+ err = gpio_request(ps_data->int_pin,"stk-int");
+ if(err < 0)
+ {
+ printk(KERN_ERR "%s: gpio_request, err=%d", __func__, err);
+ return err;
+ }
+ err = gpio_direction_input(ps_data->int_pin);
+ if(err < 0)
+ {
+ printk(KERN_ERR "%s: gpio_direction_input, err=%d", __func__, err);
+ return err;
+ }
+#if ((STK_INT_PS_MODE == 0x03) || (STK_INT_PS_MODE == 0x02))
+ err = request_any_context_irq(irq, stk_oss_irq_handler, IRQF_TRIGGER_FALLING|IRQF_TRIGGER_RISING, DEVICE_NAME, ps_data);
+#else
+ err = request_any_context_irq(irq, stk_oss_irq_handler, IRQF_TRIGGER_LOW, DEVICE_NAME, ps_data);
+#endif
+ if (err < 0)
+ {
+ printk(KERN_WARNING "%s: request_any_context_irq(%d) failed for (%d)\n", __func__, irq, err);
+ goto err_request_any_context_irq;
+ }
+ disable_irq(irq);
+
+ return 0;
+err_request_any_context_irq:
+ gpio_free(ps_data->int_pin);
+ return err;
+}
+#endif
+
+#ifdef CONFIG_HAS_EARLYSUSPEND
+static void stk3x1x_early_suspend(struct early_suspend *h)
+{
+ struct stk3x1x_data *ps_data = container_of(h, struct stk3x1x_data, stk_early_suspend);
+#ifndef STK_POLL_PS
+ int err;
+#endif
+
+ printk(KERN_INFO "%s", __func__);
+ mutex_lock(&ps_data->io_lock);
+ if(ps_data->als_enabled)
+ {
+ stk3x1x_enable_als(ps_data, 0);
+ ps_data->als_enabled = true;
+ }
+ if(ps_data->ps_enabled)
+ {
+#ifdef STK_POLL_PS
+ wake_lock(&ps_data->ps_nosuspend_wl);
+#else
+ err = enable_irq_wake(ps_data->irq);
+ if (err)
+ printk(KERN_WARNING "%s: set_irq_wake(%d) failed, err=(%d)\n", __func__, ps_data->irq, err);
+#endif
+ }
+ mutex_unlock(&ps_data->io_lock);
+ return;
+}
+
+static void stk3x1x_late_resume(struct early_suspend *h)
+{
+ struct stk3x1x_data *ps_data = container_of(h, struct stk3x1x_data, stk_early_suspend);
+#ifndef STK_POLL_PS
+ int err;
+#endif
+
+ printk(KERN_INFO "%s", __func__);
+ mutex_lock(&ps_data->io_lock);
+ if(ps_data->als_enabled)
+ stk3x1x_enable_als(ps_data, 1);
+
+ if(ps_data->ps_enabled)
+ {
+#ifdef STK_POLL_PS
+ wake_lock(&ps_data->ps_nosuspend_wl);
+#else
+ err = disable_irq_wake(ps_data->irq);
+ if (err)
+ printk(KERN_WARNING "%s: disable_irq_wake(%d) failed, err=(%d)\n", __func__, ps_data->irq, err);
+#endif
+ }
+ mutex_unlock(&ps_data->io_lock);
+ return;
+}
+#endif //#ifdef CONFIG_HAS_EARLYSUSPEND
+
+
+static int stk3x1x_probe(struct i2c_client *client,
+ const struct i2c_device_id *id)
+{
+ int err = -ENODEV;
+ struct stk3x1x_data *ps_data;
+ struct stk3x1x_platform_data *plat_data;
+ printk(KERN_INFO "%s: driver version = %s\n", __func__, DRIVER_VERSION);
+
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
+ {
+ printk(KERN_ERR "%s: No Support for I2C_FUNC_SMBUS_BYTE_DATA\n", __func__);
+ return -ENODEV;
+ }
+ if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_WORD_DATA))
+ {
+ printk(KERN_ERR "%s: No Support for I2C_FUNC_SMBUS_WORD_DATA\n", __func__);
+ return -ENODEV;
+ }
+
+ ps_data = kzalloc(sizeof(struct stk3x1x_data),GFP_KERNEL);
+ if(!ps_data)
+ {
+ printk(KERN_ERR "%s: failed to allocate stk3x1x_data\n", __func__);
+ return -ENOMEM;
+ }
+ ps_data->client = client;
+ i2c_set_clientdata(client,ps_data);
+ mutex_init(&ps_data->io_lock);
+ wake_lock_init(&ps_data->ps_wakelock,WAKE_LOCK_SUSPEND, "stk_input_wakelock");
+
+#ifdef STK_POLL_PS
+ wake_lock_init(&ps_data->ps_nosuspend_wl,WAKE_LOCK_SUSPEND, "stk_nosuspend_wakelock");
+#endif
+ if(client->dev.platform_data != NULL)
+ {
+ plat_data = client->dev.platform_data;
+ ps_data->als_transmittance = plat_data->transmittance;
+ ps_data->int_pin = plat_data->int_pin;
+ if(ps_data->als_transmittance == 0)
+ {
+ printk(KERN_ERR "%s: Please set als_transmittance in platform data\n", __func__);
+ goto err_als_input_allocate;
+ }
+ }
+ else
+ {
+ printk(KERN_ERR "%s: no stk3x1x platform data!\n", __func__);
+ goto err_als_input_allocate;
+ }
+
+ ps_data->als_input_dev = input_allocate_device();
+ if (ps_data->als_input_dev==NULL)
+ {
+ printk(KERN_ERR "%s: could not allocate als device\n", __func__);
+ err = -ENOMEM;
+ goto err_als_input_allocate;
+ }
+ ps_data->ps_input_dev = input_allocate_device();
+ if (ps_data->ps_input_dev==NULL)
+ {
+ printk(KERN_ERR "%s: could not allocate ps device\n", __func__);
+ err = -ENOMEM;
+ goto err_ps_input_allocate;
+ }
+ ps_data->als_input_dev->name = ALS_NAME;
+ ps_data->ps_input_dev->name = PS_NAME;
+ set_bit(EV_ABS, ps_data->als_input_dev->evbit);
+ set_bit(EV_ABS, ps_data->ps_input_dev->evbit);
+ input_set_abs_params(ps_data->als_input_dev, ABS_MISC, 0, stk_alscode2lux(ps_data, (1<<16)-1), 0, 0);
+ input_set_abs_params(ps_data->ps_input_dev, ABS_DISTANCE, 0,1, 0, 0);
+ err = input_register_device(ps_data->als_input_dev);
+ if (err<0)
+ {
+ printk(KERN_ERR "%s: can not register als input device\n", __func__);
+ goto err_als_input_register;
+ }
+ err = input_register_device(ps_data->ps_input_dev);
+ if (err<0)
+ {
+ printk(KERN_ERR "%s: can not register ps input device\n", __func__);
+ goto err_ps_input_register;
+ }
+
+ err = sysfs_create_group(&ps_data->als_input_dev->dev.kobj, &stk_als_attribute_group);
+ if (err < 0)
+ {
+ printk(KERN_ERR "%s:could not create sysfs group for als\n", __func__);
+ goto err_als_sysfs_create_group;
+ }
+ err = sysfs_create_group(&ps_data->ps_input_dev->dev.kobj, &stk_ps_attribute_group);
+ if (err < 0)
+ {
+ printk(KERN_ERR "%s:could not create sysfs group for ps\n", __func__);
+ goto err_ps_sysfs_create_group;
+ }
+ input_set_drvdata(ps_data->als_input_dev, ps_data);
+ input_set_drvdata(ps_data->ps_input_dev, ps_data);
+
+#ifdef STK_POLL_ALS
+ ps_data->stk_als_wq = create_singlethread_workqueue("stk_als_wq");
+ INIT_WORK(&ps_data->stk_als_work, stk_als_work_func);
+ hrtimer_init(&ps_data->als_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ps_data->als_poll_delay = ns_to_ktime(110 * NSEC_PER_MSEC);
+ ps_data->als_timer.function = stk_als_timer_func;
+#endif
+
+ ps_data->stk_ps_wq = create_singlethread_workqueue("stk_ps_wq");
+ INIT_WORK(&ps_data->stk_ps_work, stk_ps_work_func);
+ hrtimer_init(&ps_data->ps_timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
+ ps_data->ps_poll_delay = ns_to_ktime(110 * NSEC_PER_MSEC);
+ ps_data->ps_timer.function = stk_ps_timer_func;
+#if (!defined(STK_POLL_ALS) || !defined(STK_POLL_PS))
+ ps_data->stk_wq = create_singlethread_workqueue("stk_wq");
+ INIT_WORK(&ps_data->stk_work, stk_work_func);
+ err = stk3x1x_setup_irq(client);
+ if(err < 0)
+ goto err_stk3x1x_setup_irq;
+#endif
+
+ err = stk3x1x_init_all_setting(client, plat_data);
+ if(err < 0)
+ goto err_init_all_setting;
+#ifdef CONFIG_HAS_EARLYSUSPEND
+ ps_data->stk_early_suspend.level = EARLY_SUSPEND_LEVEL_BLANK_SCREEN + 1;
+ ps_data->stk_early_suspend.suspend = stk3x1x_early_suspend;
+ ps_data->stk_early_suspend.resume = stk3x1x_late_resume;
+ register_early_suspend(&ps_data->stk_early_suspend);
+#endif
+ printk(KERN_INFO "%s: probe successfully", __func__);
+ return 0;
+
+err_init_all_setting:
+#ifndef STK_POLL_PS
+ free_irq(ps_data->irq, ps_data);
+ gpio_free(plat_data->int_pin);
+#endif
+#if (!defined(STK_POLL_ALS) || !defined(STK_POLL_PS))
+err_stk3x1x_setup_irq:
+#endif
+#ifdef STK_POLL_ALS
+ hrtimer_try_to_cancel(&ps_data->als_timer);
+ destroy_workqueue(ps_data->stk_als_wq);
+#endif
+ destroy_workqueue(ps_data->stk_ps_wq);
+#if (!defined(STK_POLL_ALS) || !defined(STK_POLL_PS))
+ destroy_workqueue(ps_data->stk_wq);
+#endif
+ sysfs_remove_group(&ps_data->ps_input_dev->dev.kobj, &stk_ps_attribute_group);
+err_ps_sysfs_create_group:
+ sysfs_remove_group(&ps_data->als_input_dev->dev.kobj, &stk_als_attribute_group);
+err_als_sysfs_create_group:
+ input_unregister_device(ps_data->ps_input_dev);
+err_ps_input_register:
+ input_unregister_device(ps_data->als_input_dev);
+err_als_input_register:
+ input_free_device(ps_data->ps_input_dev);
+err_ps_input_allocate:
+ input_free_device(ps_data->als_input_dev);
+err_als_input_allocate:
+#ifdef STK_POLL_PS
+ wake_lock_destroy(&ps_data->ps_nosuspend_wl);
+#endif
+ wake_lock_destroy(&ps_data->ps_wakelock);
+ mutex_destroy(&ps_data->io_lock);
+ kfree(ps_data);
+ return err;
+}
+
+
+static int stk3x1x_remove(struct i2c_client *client)
+{
+ struct stk3x1x_data *ps_data = i2c_get_clientdata(client);
+#ifndef STK_POLL_PS
+ free_irq(ps_data->irq, ps_data);
+ gpio_free(ps_data->int_pin);
+#endif
+#ifdef STK_POLL_ALS
+ hrtimer_try_to_cancel(&ps_data->als_timer);
+ destroy_workqueue(ps_data->stk_als_wq);
+#endif
+ destroy_workqueue(ps_data->stk_ps_wq);
+#if (!defined(STK_POLL_ALS) || !defined(STK_POLL_PS))
+ destroy_workqueue(ps_data->stk_wq);
+#endif
+ sysfs_remove_group(&ps_data->ps_input_dev->dev.kobj, &stk_ps_attribute_group);
+ sysfs_remove_group(&ps_data->als_input_dev->dev.kobj, &stk_als_attribute_group);
+ input_unregister_device(ps_data->ps_input_dev);
+ input_unregister_device(ps_data->als_input_dev);
+ input_free_device(ps_data->ps_input_dev);
+ input_free_device(ps_data->als_input_dev);
+#ifdef STK_POLL_PS
+ wake_lock_destroy(&ps_data->ps_nosuspend_wl);
+#endif
+ wake_lock_destroy(&ps_data->ps_wakelock);
+ mutex_destroy(&ps_data->io_lock);
+ kfree(ps_data);
+
+ return 0;
+}
+
+static const struct i2c_device_id stk_ps_id[] =
+{
+ { "stk_ps", 0},
+ {}
+};
+MODULE_DEVICE_TABLE(i2c, stk_ps_id);
+
+static struct i2c_driver stk_ps_driver =
+{
+ .driver = {
+ .name = DEVICE_NAME,
+ .owner = THIS_MODULE,
+ },
+ .probe = stk3x1x_probe,
+ .remove = stk3x1x_remove,
+ .id_table = stk_ps_id,
+};
+
+
+static int __init stk3x1x_init(void)
+{
+ int ret;
+ ret = i2c_add_driver(&stk_ps_driver);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void __exit stk3x1x_exit(void)
+{
+ i2c_del_driver(&stk_ps_driver);
+}
+
+module_init(stk3x1x_init);
+module_exit(stk3x1x_exit);
+MODULE_AUTHOR("Lex Hsieh <lex_hsieh@sitronix.com.tw>");
+MODULE_DESCRIPTION("Sensortek stk3x1x Proximity Sensor driver");
+MODULE_LICENSE("GPL");
+MODULE_VERSION(DRIVER_VERSION);
diff --git a/include/linux/stk3x1x.h b/include/linux/stk3x1x.h
new file mode 100644
index 0000000..c34116a
--- /dev/null
+++ b/include/linux/stk3x1x.h
@@ -0,0 +1,29 @@
+/*
+ *
+ * $Id: stk3x1x.h
+ *
+ * Copyright (C) 2012 Lex Hsieh <lex_hsieh@sitronix.com.tw>
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+#ifndef __STK3X1X_H__
+#define __STK3X1X_H__
+
+/* platform data */
+struct stk3x1x_platform_data
+{
+ uint8_t state_reg;
+ uint8_t psctrl_reg;
+ uint8_t alsctrl_reg;
+ uint8_t ledctrl_reg;
+ uint8_t wait_reg;
+ uint16_t ps_thd_h;
+ uint16_t ps_thd_l;
+ int int_pin;
+ uint32_t transmittance;
+};
+
+#endif // __STK3X1X_H__