11802d0beSThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only
27f6b11a1SDaniel Jeong /*
37f6b11a1SDaniel Jeong * drivers/media/i2c/lm3560.c
4653d500cSPavel Machek * General device driver for TI lm3559, lm3560, FLASH LED Driver
57f6b11a1SDaniel Jeong *
67f6b11a1SDaniel Jeong * Copyright (C) 2013 Texas Instruments
77f6b11a1SDaniel Jeong *
87f6b11a1SDaniel Jeong * Contact: Daniel Jeong <gshark.jeong@gmail.com>
97f6b11a1SDaniel Jeong * Ldd-Mlp <ldd-mlp@list.ti.com>
107f6b11a1SDaniel Jeong */
117f6b11a1SDaniel Jeong
127f6b11a1SDaniel Jeong #include <linux/delay.h>
137f6b11a1SDaniel Jeong #include <linux/module.h>
147f6b11a1SDaniel Jeong #include <linux/i2c.h>
157f6b11a1SDaniel Jeong #include <linux/slab.h>
167f6b11a1SDaniel Jeong #include <linux/mutex.h>
177f6b11a1SDaniel Jeong #include <linux/regmap.h>
187f6b11a1SDaniel Jeong #include <linux/videodev2.h>
19b5dcee22SMauro Carvalho Chehab #include <media/i2c/lm3560.h>
207f6b11a1SDaniel Jeong #include <media/v4l2-ctrls.h>
217f6b11a1SDaniel Jeong #include <media/v4l2-device.h>
227f6b11a1SDaniel Jeong
237f6b11a1SDaniel Jeong /* registers definitions */
247f6b11a1SDaniel Jeong #define REG_ENABLE 0x10
257f6b11a1SDaniel Jeong #define REG_TORCH_BR 0xa0
267f6b11a1SDaniel Jeong #define REG_FLASH_BR 0xb0
277f6b11a1SDaniel Jeong #define REG_FLASH_TOUT 0xc0
287f6b11a1SDaniel Jeong #define REG_FLAG 0xd0
297f6b11a1SDaniel Jeong #define REG_CONFIG1 0xe0
307f6b11a1SDaniel Jeong
31d1166b0fSAndy Shevchenko /* fault mask */
327f6b11a1SDaniel Jeong #define FAULT_TIMEOUT (1<<0)
337f6b11a1SDaniel Jeong #define FAULT_OVERTEMP (1<<1)
347f6b11a1SDaniel Jeong #define FAULT_SHORT_CIRCUIT (1<<2)
357f6b11a1SDaniel Jeong
367f6b11a1SDaniel Jeong enum led_enable {
377f6b11a1SDaniel Jeong MODE_SHDN = 0x0,
387f6b11a1SDaniel Jeong MODE_TORCH = 0x2,
397f6b11a1SDaniel Jeong MODE_FLASH = 0x3,
407f6b11a1SDaniel Jeong };
417f6b11a1SDaniel Jeong
42d1166b0fSAndy Shevchenko /**
43d1166b0fSAndy Shevchenko * struct lm3560_flash
447f6b11a1SDaniel Jeong *
45ed050c21SMauro Carvalho Chehab * @dev: pointer to &struct device
467f6b11a1SDaniel Jeong * @pdata: platform data
477f6b11a1SDaniel Jeong * @regmap: reg. map for i2c
487f6b11a1SDaniel Jeong * @lock: muxtex for serial access.
497f6b11a1SDaniel Jeong * @led_mode: V4L2 LED mode
50f8a7647dSMauro Carvalho Chehab * @ctrls_led: V4L2 controls
517f6b11a1SDaniel Jeong * @subdev_led: V4L2 subdev
527f6b11a1SDaniel Jeong */
537f6b11a1SDaniel Jeong struct lm3560_flash {
547f6b11a1SDaniel Jeong struct device *dev;
557f6b11a1SDaniel Jeong struct lm3560_platform_data *pdata;
567f6b11a1SDaniel Jeong struct regmap *regmap;
577f6b11a1SDaniel Jeong struct mutex lock;
587f6b11a1SDaniel Jeong
597f6b11a1SDaniel Jeong enum v4l2_flash_led_mode led_mode;
607f6b11a1SDaniel Jeong struct v4l2_ctrl_handler ctrls_led[LM3560_LED_MAX];
617f6b11a1SDaniel Jeong struct v4l2_subdev subdev_led[LM3560_LED_MAX];
627f6b11a1SDaniel Jeong };
637f6b11a1SDaniel Jeong
647f6b11a1SDaniel Jeong #define to_lm3560_flash(_ctrl, _no) \
657f6b11a1SDaniel Jeong container_of(_ctrl->handler, struct lm3560_flash, ctrls_led[_no])
667f6b11a1SDaniel Jeong
677f6b11a1SDaniel Jeong /* enable mode control */
lm3560_mode_ctrl(struct lm3560_flash * flash)687f6b11a1SDaniel Jeong static int lm3560_mode_ctrl(struct lm3560_flash *flash)
697f6b11a1SDaniel Jeong {
707f6b11a1SDaniel Jeong int rval = -EINVAL;
717f6b11a1SDaniel Jeong
727f6b11a1SDaniel Jeong switch (flash->led_mode) {
737f6b11a1SDaniel Jeong case V4L2_FLASH_LED_MODE_NONE:
747f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
757f6b11a1SDaniel Jeong REG_ENABLE, 0x03, MODE_SHDN);
767f6b11a1SDaniel Jeong break;
777f6b11a1SDaniel Jeong case V4L2_FLASH_LED_MODE_TORCH:
787f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
797f6b11a1SDaniel Jeong REG_ENABLE, 0x03, MODE_TORCH);
807f6b11a1SDaniel Jeong break;
817f6b11a1SDaniel Jeong case V4L2_FLASH_LED_MODE_FLASH:
827f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
837f6b11a1SDaniel Jeong REG_ENABLE, 0x03, MODE_FLASH);
847f6b11a1SDaniel Jeong break;
857f6b11a1SDaniel Jeong }
867f6b11a1SDaniel Jeong return rval;
877f6b11a1SDaniel Jeong }
887f6b11a1SDaniel Jeong
897f6b11a1SDaniel Jeong /* led1/2 enable/disable */
lm3560_enable_ctrl(struct lm3560_flash * flash,enum lm3560_led_id led_no,bool on)907f6b11a1SDaniel Jeong static int lm3560_enable_ctrl(struct lm3560_flash *flash,
917f6b11a1SDaniel Jeong enum lm3560_led_id led_no, bool on)
927f6b11a1SDaniel Jeong {
937f6b11a1SDaniel Jeong int rval;
947f6b11a1SDaniel Jeong
957f6b11a1SDaniel Jeong if (led_no == LM3560_LED0) {
96afb666d1SMauro Carvalho Chehab if (on)
977f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
987f6b11a1SDaniel Jeong REG_ENABLE, 0x08, 0x08);
997f6b11a1SDaniel Jeong else
1007f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1017f6b11a1SDaniel Jeong REG_ENABLE, 0x08, 0x00);
1027f6b11a1SDaniel Jeong } else {
103afb666d1SMauro Carvalho Chehab if (on)
1047f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1057f6b11a1SDaniel Jeong REG_ENABLE, 0x10, 0x10);
1067f6b11a1SDaniel Jeong else
1077f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1087f6b11a1SDaniel Jeong REG_ENABLE, 0x10, 0x00);
1097f6b11a1SDaniel Jeong }
1107f6b11a1SDaniel Jeong return rval;
1117f6b11a1SDaniel Jeong }
1127f6b11a1SDaniel Jeong
1137f6b11a1SDaniel Jeong /* torch1/2 brightness control */
lm3560_torch_brt_ctrl(struct lm3560_flash * flash,enum lm3560_led_id led_no,unsigned int brt)1147f6b11a1SDaniel Jeong static int lm3560_torch_brt_ctrl(struct lm3560_flash *flash,
1157f6b11a1SDaniel Jeong enum lm3560_led_id led_no, unsigned int brt)
1167f6b11a1SDaniel Jeong {
1177f6b11a1SDaniel Jeong int rval;
1187f6b11a1SDaniel Jeong u8 br_bits;
1197f6b11a1SDaniel Jeong
1207f6b11a1SDaniel Jeong if (brt < LM3560_TORCH_BRT_MIN)
1217f6b11a1SDaniel Jeong return lm3560_enable_ctrl(flash, led_no, false);
1227f6b11a1SDaniel Jeong else
1237f6b11a1SDaniel Jeong rval = lm3560_enable_ctrl(flash, led_no, true);
1247f6b11a1SDaniel Jeong
1257f6b11a1SDaniel Jeong br_bits = LM3560_TORCH_BRT_uA_TO_REG(brt);
1267f6b11a1SDaniel Jeong if (led_no == LM3560_LED0)
1277f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1287f6b11a1SDaniel Jeong REG_TORCH_BR, 0x07, br_bits);
1297f6b11a1SDaniel Jeong else
1307f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1317f6b11a1SDaniel Jeong REG_TORCH_BR, 0x38, br_bits << 3);
1327f6b11a1SDaniel Jeong
1337f6b11a1SDaniel Jeong return rval;
1347f6b11a1SDaniel Jeong }
1357f6b11a1SDaniel Jeong
1367f6b11a1SDaniel Jeong /* flash1/2 brightness control */
lm3560_flash_brt_ctrl(struct lm3560_flash * flash,enum lm3560_led_id led_no,unsigned int brt)1377f6b11a1SDaniel Jeong static int lm3560_flash_brt_ctrl(struct lm3560_flash *flash,
1387f6b11a1SDaniel Jeong enum lm3560_led_id led_no, unsigned int brt)
1397f6b11a1SDaniel Jeong {
1407f6b11a1SDaniel Jeong int rval;
1417f6b11a1SDaniel Jeong u8 br_bits;
1427f6b11a1SDaniel Jeong
1437f6b11a1SDaniel Jeong if (brt < LM3560_FLASH_BRT_MIN)
1447f6b11a1SDaniel Jeong return lm3560_enable_ctrl(flash, led_no, false);
1457f6b11a1SDaniel Jeong else
1467f6b11a1SDaniel Jeong rval = lm3560_enable_ctrl(flash, led_no, true);
1477f6b11a1SDaniel Jeong
1487f6b11a1SDaniel Jeong br_bits = LM3560_FLASH_BRT_uA_TO_REG(brt);
1497f6b11a1SDaniel Jeong if (led_no == LM3560_LED0)
1507f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1517f6b11a1SDaniel Jeong REG_FLASH_BR, 0x0f, br_bits);
1527f6b11a1SDaniel Jeong else
1537f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
1547f6b11a1SDaniel Jeong REG_FLASH_BR, 0xf0, br_bits << 4);
1557f6b11a1SDaniel Jeong
1567f6b11a1SDaniel Jeong return rval;
1577f6b11a1SDaniel Jeong }
1587f6b11a1SDaniel Jeong
159d1166b0fSAndy Shevchenko /* v4l2 controls */
lm3560_get_ctrl(struct v4l2_ctrl * ctrl,enum lm3560_led_id led_no)1607f6b11a1SDaniel Jeong static int lm3560_get_ctrl(struct v4l2_ctrl *ctrl, enum lm3560_led_id led_no)
1617f6b11a1SDaniel Jeong {
1627f6b11a1SDaniel Jeong struct lm3560_flash *flash = to_lm3560_flash(ctrl, led_no);
163e1c759bdSDaniel Jeong int rval = -EINVAL;
1647f6b11a1SDaniel Jeong
1657f6b11a1SDaniel Jeong mutex_lock(&flash->lock);
1667f6b11a1SDaniel Jeong
1677f6b11a1SDaniel Jeong if (ctrl->id == V4L2_CID_FLASH_FAULT) {
1687f6b11a1SDaniel Jeong s32 fault = 0;
1697f6b11a1SDaniel Jeong unsigned int reg_val;
1707f6b11a1SDaniel Jeong rval = regmap_read(flash->regmap, REG_FLAG, ®_val);
1717f6b11a1SDaniel Jeong if (rval < 0)
172e1c759bdSDaniel Jeong goto out;
173e1c759bdSDaniel Jeong if (reg_val & FAULT_SHORT_CIRCUIT)
1747f6b11a1SDaniel Jeong fault |= V4L2_FLASH_FAULT_SHORT_CIRCUIT;
175e1c759bdSDaniel Jeong if (reg_val & FAULT_OVERTEMP)
1767f6b11a1SDaniel Jeong fault |= V4L2_FLASH_FAULT_OVER_TEMPERATURE;
177e1c759bdSDaniel Jeong if (reg_val & FAULT_TIMEOUT)
1787f6b11a1SDaniel Jeong fault |= V4L2_FLASH_FAULT_TIMEOUT;
1797f6b11a1SDaniel Jeong ctrl->cur.val = fault;
1807f6b11a1SDaniel Jeong }
1817f6b11a1SDaniel Jeong
182e1c759bdSDaniel Jeong out:
1837f6b11a1SDaniel Jeong mutex_unlock(&flash->lock);
184e1c759bdSDaniel Jeong return rval;
1857f6b11a1SDaniel Jeong }
1867f6b11a1SDaniel Jeong
lm3560_set_ctrl(struct v4l2_ctrl * ctrl,enum lm3560_led_id led_no)1877f6b11a1SDaniel Jeong static int lm3560_set_ctrl(struct v4l2_ctrl *ctrl, enum lm3560_led_id led_no)
1887f6b11a1SDaniel Jeong {
1897f6b11a1SDaniel Jeong struct lm3560_flash *flash = to_lm3560_flash(ctrl, led_no);
1907f6b11a1SDaniel Jeong u8 tout_bits;
1917f6b11a1SDaniel Jeong int rval = -EINVAL;
1927f6b11a1SDaniel Jeong
1937f6b11a1SDaniel Jeong mutex_lock(&flash->lock);
1947f6b11a1SDaniel Jeong
1957f6b11a1SDaniel Jeong switch (ctrl->id) {
1967f6b11a1SDaniel Jeong case V4L2_CID_FLASH_LED_MODE:
1977f6b11a1SDaniel Jeong flash->led_mode = ctrl->val;
1987f6b11a1SDaniel Jeong if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH)
1997f6b11a1SDaniel Jeong rval = lm3560_mode_ctrl(flash);
2007f6b11a1SDaniel Jeong break;
2017f6b11a1SDaniel Jeong
2027f6b11a1SDaniel Jeong case V4L2_CID_FLASH_STROBE_SOURCE:
2037f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
2047f6b11a1SDaniel Jeong REG_CONFIG1, 0x04, (ctrl->val) << 2);
2057f6b11a1SDaniel Jeong if (rval < 0)
2067f6b11a1SDaniel Jeong goto err_out;
2077f6b11a1SDaniel Jeong break;
2087f6b11a1SDaniel Jeong
2097f6b11a1SDaniel Jeong case V4L2_CID_FLASH_STROBE:
210eed8c3eeSWei Yongjun if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) {
211eed8c3eeSWei Yongjun rval = -EBUSY;
212eed8c3eeSWei Yongjun goto err_out;
213eed8c3eeSWei Yongjun }
2147f6b11a1SDaniel Jeong flash->led_mode = V4L2_FLASH_LED_MODE_FLASH;
2157f6b11a1SDaniel Jeong rval = lm3560_mode_ctrl(flash);
2167f6b11a1SDaniel Jeong break;
2177f6b11a1SDaniel Jeong
2187f6b11a1SDaniel Jeong case V4L2_CID_FLASH_STROBE_STOP:
219eed8c3eeSWei Yongjun if (flash->led_mode != V4L2_FLASH_LED_MODE_FLASH) {
220eed8c3eeSWei Yongjun rval = -EBUSY;
221eed8c3eeSWei Yongjun goto err_out;
222eed8c3eeSWei Yongjun }
2237f6b11a1SDaniel Jeong flash->led_mode = V4L2_FLASH_LED_MODE_NONE;
2247f6b11a1SDaniel Jeong rval = lm3560_mode_ctrl(flash);
2257f6b11a1SDaniel Jeong break;
2267f6b11a1SDaniel Jeong
2277f6b11a1SDaniel Jeong case V4L2_CID_FLASH_TIMEOUT:
2287f6b11a1SDaniel Jeong tout_bits = LM3560_FLASH_TOUT_ms_TO_REG(ctrl->val);
2297f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
2307f6b11a1SDaniel Jeong REG_FLASH_TOUT, 0x1f, tout_bits);
2317f6b11a1SDaniel Jeong break;
2327f6b11a1SDaniel Jeong
2337f6b11a1SDaniel Jeong case V4L2_CID_FLASH_INTENSITY:
2347f6b11a1SDaniel Jeong rval = lm3560_flash_brt_ctrl(flash, led_no, ctrl->val);
2357f6b11a1SDaniel Jeong break;
2367f6b11a1SDaniel Jeong
2377f6b11a1SDaniel Jeong case V4L2_CID_FLASH_TORCH_INTENSITY:
2387f6b11a1SDaniel Jeong rval = lm3560_torch_brt_ctrl(flash, led_no, ctrl->val);
2397f6b11a1SDaniel Jeong break;
2407f6b11a1SDaniel Jeong }
2417f6b11a1SDaniel Jeong
2427f6b11a1SDaniel Jeong err_out:
243eed8c3eeSWei Yongjun mutex_unlock(&flash->lock);
2447f6b11a1SDaniel Jeong return rval;
2457f6b11a1SDaniel Jeong }
2467f6b11a1SDaniel Jeong
lm3560_led1_get_ctrl(struct v4l2_ctrl * ctrl)2477f6b11a1SDaniel Jeong static int lm3560_led1_get_ctrl(struct v4l2_ctrl *ctrl)
2487f6b11a1SDaniel Jeong {
2497f6b11a1SDaniel Jeong return lm3560_get_ctrl(ctrl, LM3560_LED1);
2507f6b11a1SDaniel Jeong }
2517f6b11a1SDaniel Jeong
lm3560_led1_set_ctrl(struct v4l2_ctrl * ctrl)2527f6b11a1SDaniel Jeong static int lm3560_led1_set_ctrl(struct v4l2_ctrl *ctrl)
2537f6b11a1SDaniel Jeong {
2547f6b11a1SDaniel Jeong return lm3560_set_ctrl(ctrl, LM3560_LED1);
2557f6b11a1SDaniel Jeong }
2567f6b11a1SDaniel Jeong
lm3560_led0_get_ctrl(struct v4l2_ctrl * ctrl)2577f6b11a1SDaniel Jeong static int lm3560_led0_get_ctrl(struct v4l2_ctrl *ctrl)
2587f6b11a1SDaniel Jeong {
2597f6b11a1SDaniel Jeong return lm3560_get_ctrl(ctrl, LM3560_LED0);
2607f6b11a1SDaniel Jeong }
2617f6b11a1SDaniel Jeong
lm3560_led0_set_ctrl(struct v4l2_ctrl * ctrl)2627f6b11a1SDaniel Jeong static int lm3560_led0_set_ctrl(struct v4l2_ctrl *ctrl)
2637f6b11a1SDaniel Jeong {
2647f6b11a1SDaniel Jeong return lm3560_set_ctrl(ctrl, LM3560_LED0);
2657f6b11a1SDaniel Jeong }
2667f6b11a1SDaniel Jeong
2677f6b11a1SDaniel Jeong static const struct v4l2_ctrl_ops lm3560_led_ctrl_ops[LM3560_LED_MAX] = {
2687f6b11a1SDaniel Jeong [LM3560_LED0] = {
2697f6b11a1SDaniel Jeong .g_volatile_ctrl = lm3560_led0_get_ctrl,
2707f6b11a1SDaniel Jeong .s_ctrl = lm3560_led0_set_ctrl,
2717f6b11a1SDaniel Jeong },
2727f6b11a1SDaniel Jeong [LM3560_LED1] = {
2737f6b11a1SDaniel Jeong .g_volatile_ctrl = lm3560_led1_get_ctrl,
2747f6b11a1SDaniel Jeong .s_ctrl = lm3560_led1_set_ctrl,
2757f6b11a1SDaniel Jeong }
2767f6b11a1SDaniel Jeong };
2777f6b11a1SDaniel Jeong
lm3560_init_controls(struct lm3560_flash * flash,enum lm3560_led_id led_no)2787f6b11a1SDaniel Jeong static int lm3560_init_controls(struct lm3560_flash *flash,
2797f6b11a1SDaniel Jeong enum lm3560_led_id led_no)
2807f6b11a1SDaniel Jeong {
2817f6b11a1SDaniel Jeong struct v4l2_ctrl *fault;
2827f6b11a1SDaniel Jeong u32 max_flash_brt = flash->pdata->max_flash_brt[led_no];
2837f6b11a1SDaniel Jeong u32 max_torch_brt = flash->pdata->max_torch_brt[led_no];
2847f6b11a1SDaniel Jeong struct v4l2_ctrl_handler *hdl = &flash->ctrls_led[led_no];
2857f6b11a1SDaniel Jeong const struct v4l2_ctrl_ops *ops = &lm3560_led_ctrl_ops[led_no];
2867f6b11a1SDaniel Jeong
2877f6b11a1SDaniel Jeong v4l2_ctrl_handler_init(hdl, 8);
288d1166b0fSAndy Shevchenko
2897f6b11a1SDaniel Jeong /* flash mode */
2907f6b11a1SDaniel Jeong v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_FLASH_LED_MODE,
2917f6b11a1SDaniel Jeong V4L2_FLASH_LED_MODE_TORCH, ~0x7,
2927f6b11a1SDaniel Jeong V4L2_FLASH_LED_MODE_NONE);
2937f6b11a1SDaniel Jeong flash->led_mode = V4L2_FLASH_LED_MODE_NONE;
2947f6b11a1SDaniel Jeong
2957f6b11a1SDaniel Jeong /* flash source */
2967f6b11a1SDaniel Jeong v4l2_ctrl_new_std_menu(hdl, ops, V4L2_CID_FLASH_STROBE_SOURCE,
2977f6b11a1SDaniel Jeong 0x1, ~0x3, V4L2_FLASH_STROBE_SOURCE_SOFTWARE);
2987f6b11a1SDaniel Jeong
2997f6b11a1SDaniel Jeong /* flash strobe */
3007f6b11a1SDaniel Jeong v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_STROBE, 0, 0, 0, 0);
301d1166b0fSAndy Shevchenko
3027f6b11a1SDaniel Jeong /* flash strobe stop */
3037f6b11a1SDaniel Jeong v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_STROBE_STOP, 0, 0, 0, 0);
3047f6b11a1SDaniel Jeong
3057f6b11a1SDaniel Jeong /* flash strobe timeout */
3067f6b11a1SDaniel Jeong v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_TIMEOUT,
3077f6b11a1SDaniel Jeong LM3560_FLASH_TOUT_MIN,
3087f6b11a1SDaniel Jeong flash->pdata->max_flash_timeout,
3097f6b11a1SDaniel Jeong LM3560_FLASH_TOUT_STEP,
3107f6b11a1SDaniel Jeong flash->pdata->max_flash_timeout);
3117f6b11a1SDaniel Jeong
3127f6b11a1SDaniel Jeong /* flash brt */
3137f6b11a1SDaniel Jeong v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_INTENSITY,
3147f6b11a1SDaniel Jeong LM3560_FLASH_BRT_MIN, max_flash_brt,
3157f6b11a1SDaniel Jeong LM3560_FLASH_BRT_STEP, max_flash_brt);
3167f6b11a1SDaniel Jeong
3177f6b11a1SDaniel Jeong /* torch brt */
3187f6b11a1SDaniel Jeong v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_TORCH_INTENSITY,
3197f6b11a1SDaniel Jeong LM3560_TORCH_BRT_MIN, max_torch_brt,
3207f6b11a1SDaniel Jeong LM3560_TORCH_BRT_STEP, max_torch_brt);
3217f6b11a1SDaniel Jeong
3227f6b11a1SDaniel Jeong /* fault */
3237f6b11a1SDaniel Jeong fault = v4l2_ctrl_new_std(hdl, ops, V4L2_CID_FLASH_FAULT, 0,
3247f6b11a1SDaniel Jeong V4L2_FLASH_FAULT_OVER_VOLTAGE
3257f6b11a1SDaniel Jeong | V4L2_FLASH_FAULT_OVER_TEMPERATURE
3267f6b11a1SDaniel Jeong | V4L2_FLASH_FAULT_SHORT_CIRCUIT
3277f6b11a1SDaniel Jeong | V4L2_FLASH_FAULT_TIMEOUT, 0, 0);
3287f6b11a1SDaniel Jeong if (fault != NULL)
3297f6b11a1SDaniel Jeong fault->flags |= V4L2_CTRL_FLAG_VOLATILE;
3307f6b11a1SDaniel Jeong
3317f6b11a1SDaniel Jeong if (hdl->error)
3327f6b11a1SDaniel Jeong return hdl->error;
3337f6b11a1SDaniel Jeong
3347f6b11a1SDaniel Jeong flash->subdev_led[led_no].ctrl_handler = hdl;
3357f6b11a1SDaniel Jeong return 0;
3367f6b11a1SDaniel Jeong }
3377f6b11a1SDaniel Jeong
3387f6b11a1SDaniel Jeong /* initialize device */
3397f6b11a1SDaniel Jeong static const struct v4l2_subdev_ops lm3560_ops = {
3407f6b11a1SDaniel Jeong .core = NULL,
3417f6b11a1SDaniel Jeong };
3427f6b11a1SDaniel Jeong
3437f6b11a1SDaniel Jeong static const struct regmap_config lm3560_regmap = {
3447f6b11a1SDaniel Jeong .reg_bits = 8,
3457f6b11a1SDaniel Jeong .val_bits = 8,
3467f6b11a1SDaniel Jeong .max_register = 0xFF,
3477f6b11a1SDaniel Jeong };
3487f6b11a1SDaniel Jeong
lm3560_subdev_init(struct lm3560_flash * flash,enum lm3560_led_id led_no,char * led_name)3497f6b11a1SDaniel Jeong static int lm3560_subdev_init(struct lm3560_flash *flash,
3507f6b11a1SDaniel Jeong enum lm3560_led_id led_no, char *led_name)
3517f6b11a1SDaniel Jeong {
3527f6b11a1SDaniel Jeong struct i2c_client *client = to_i2c_client(flash->dev);
3537f6b11a1SDaniel Jeong int rval;
3547f6b11a1SDaniel Jeong
3557f6b11a1SDaniel Jeong v4l2_i2c_subdev_init(&flash->subdev_led[led_no], client, &lm3560_ops);
3567f6b11a1SDaniel Jeong flash->subdev_led[led_no].flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
357cc1e6315SMauro Carvalho Chehab strscpy(flash->subdev_led[led_no].name, led_name,
358cc1e6315SMauro Carvalho Chehab sizeof(flash->subdev_led[led_no].name));
3597f6b11a1SDaniel Jeong rval = lm3560_init_controls(flash, led_no);
3607f6b11a1SDaniel Jeong if (rval)
3617f6b11a1SDaniel Jeong goto err_out;
362ab22e77cSMauro Carvalho Chehab rval = media_entity_pads_init(&flash->subdev_led[led_no].entity, 0, NULL);
3637f6b11a1SDaniel Jeong if (rval < 0)
3647f6b11a1SDaniel Jeong goto err_out;
3654ca72efaSMauro Carvalho Chehab flash->subdev_led[led_no].entity.function = MEDIA_ENT_F_FLASH;
3667f6b11a1SDaniel Jeong
3677f6b11a1SDaniel Jeong return rval;
3687f6b11a1SDaniel Jeong
3697f6b11a1SDaniel Jeong err_out:
3707f6b11a1SDaniel Jeong v4l2_ctrl_handler_free(&flash->ctrls_led[led_no]);
3717f6b11a1SDaniel Jeong return rval;
3727f6b11a1SDaniel Jeong }
3737f6b11a1SDaniel Jeong
lm3560_init_device(struct lm3560_flash * flash)3747f6b11a1SDaniel Jeong static int lm3560_init_device(struct lm3560_flash *flash)
3757f6b11a1SDaniel Jeong {
3767f6b11a1SDaniel Jeong int rval;
3777f6b11a1SDaniel Jeong unsigned int reg_val;
3787f6b11a1SDaniel Jeong
3797f6b11a1SDaniel Jeong /* set peak current */
3807f6b11a1SDaniel Jeong rval = regmap_update_bits(flash->regmap,
3817f6b11a1SDaniel Jeong REG_FLASH_TOUT, 0x60, flash->pdata->peak);
3827f6b11a1SDaniel Jeong if (rval < 0)
3837f6b11a1SDaniel Jeong return rval;
3847f6b11a1SDaniel Jeong /* output disable */
3857f6b11a1SDaniel Jeong flash->led_mode = V4L2_FLASH_LED_MODE_NONE;
3867f6b11a1SDaniel Jeong rval = lm3560_mode_ctrl(flash);
3877f6b11a1SDaniel Jeong if (rval < 0)
3887f6b11a1SDaniel Jeong return rval;
389d1166b0fSAndy Shevchenko /* reset faults */
3907f6b11a1SDaniel Jeong rval = regmap_read(flash->regmap, REG_FLAG, ®_val);
3917f6b11a1SDaniel Jeong return rval;
3927f6b11a1SDaniel Jeong }
3937f6b11a1SDaniel Jeong
lm3560_probe(struct i2c_client * client)3948dba8bc9SUwe Kleine-König static int lm3560_probe(struct i2c_client *client)
3957f6b11a1SDaniel Jeong {
3967f6b11a1SDaniel Jeong struct lm3560_flash *flash;
3977f6b11a1SDaniel Jeong struct lm3560_platform_data *pdata = dev_get_platdata(&client->dev);
3987f6b11a1SDaniel Jeong int rval;
3997f6b11a1SDaniel Jeong
4007f6b11a1SDaniel Jeong flash = devm_kzalloc(&client->dev, sizeof(*flash), GFP_KERNEL);
4017f6b11a1SDaniel Jeong if (flash == NULL)
4027f6b11a1SDaniel Jeong return -ENOMEM;
4037f6b11a1SDaniel Jeong
4047f6b11a1SDaniel Jeong flash->regmap = devm_regmap_init_i2c(client, &lm3560_regmap);
4057f6b11a1SDaniel Jeong if (IS_ERR(flash->regmap)) {
4067f6b11a1SDaniel Jeong rval = PTR_ERR(flash->regmap);
4077f6b11a1SDaniel Jeong return rval;
4087f6b11a1SDaniel Jeong }
4097f6b11a1SDaniel Jeong
4107f6b11a1SDaniel Jeong /* if there is no platform data, use chip default value */
4117f6b11a1SDaniel Jeong if (pdata == NULL) {
412341ef565SAndy Shevchenko pdata = devm_kzalloc(&client->dev, sizeof(*pdata), GFP_KERNEL);
4137f6b11a1SDaniel Jeong if (pdata == NULL)
4147f6b11a1SDaniel Jeong return -ENODEV;
4157f6b11a1SDaniel Jeong pdata->peak = LM3560_PEAK_3600mA;
4167f6b11a1SDaniel Jeong pdata->max_flash_timeout = LM3560_FLASH_TOUT_MAX;
4177f6b11a1SDaniel Jeong /* led 1 */
4187f6b11a1SDaniel Jeong pdata->max_flash_brt[LM3560_LED0] = LM3560_FLASH_BRT_MAX;
4197f6b11a1SDaniel Jeong pdata->max_torch_brt[LM3560_LED0] = LM3560_TORCH_BRT_MAX;
4207f6b11a1SDaniel Jeong /* led 2 */
4217f6b11a1SDaniel Jeong pdata->max_flash_brt[LM3560_LED1] = LM3560_FLASH_BRT_MAX;
4227f6b11a1SDaniel Jeong pdata->max_torch_brt[LM3560_LED1] = LM3560_TORCH_BRT_MAX;
4237f6b11a1SDaniel Jeong }
4247f6b11a1SDaniel Jeong flash->pdata = pdata;
4257f6b11a1SDaniel Jeong flash->dev = &client->dev;
4267f6b11a1SDaniel Jeong mutex_init(&flash->lock);
4277f6b11a1SDaniel Jeong
4287f6b11a1SDaniel Jeong rval = lm3560_subdev_init(flash, LM3560_LED0, "lm3560-led0");
4297f6b11a1SDaniel Jeong if (rval < 0)
4307f6b11a1SDaniel Jeong return rval;
4317f6b11a1SDaniel Jeong
4327f6b11a1SDaniel Jeong rval = lm3560_subdev_init(flash, LM3560_LED1, "lm3560-led1");
4337f6b11a1SDaniel Jeong if (rval < 0)
4347f6b11a1SDaniel Jeong return rval;
4357f6b11a1SDaniel Jeong
4367f6b11a1SDaniel Jeong rval = lm3560_init_device(flash);
4377f6b11a1SDaniel Jeong if (rval < 0)
4387f6b11a1SDaniel Jeong return rval;
4397f6b11a1SDaniel Jeong
440cc58f4dbSWei Yongjun i2c_set_clientdata(client, flash);
441cc58f4dbSWei Yongjun
4427f6b11a1SDaniel Jeong return 0;
4437f6b11a1SDaniel Jeong }
4447f6b11a1SDaniel Jeong
lm3560_remove(struct i2c_client * client)445ed5c2f5fSUwe Kleine-König static void lm3560_remove(struct i2c_client *client)
4467f6b11a1SDaniel Jeong {
447cc58f4dbSWei Yongjun struct lm3560_flash *flash = i2c_get_clientdata(client);
4487f6b11a1SDaniel Jeong unsigned int i;
4497f6b11a1SDaniel Jeong
4507f6b11a1SDaniel Jeong for (i = LM3560_LED0; i < LM3560_LED_MAX; i++) {
4517f6b11a1SDaniel Jeong v4l2_device_unregister_subdev(&flash->subdev_led[i]);
4527f6b11a1SDaniel Jeong v4l2_ctrl_handler_free(&flash->ctrls_led[i]);
4537f6b11a1SDaniel Jeong media_entity_cleanup(&flash->subdev_led[i].entity);
4547f6b11a1SDaniel Jeong }
4557f6b11a1SDaniel Jeong }
4567f6b11a1SDaniel Jeong
4577f6b11a1SDaniel Jeong static const struct i2c_device_id lm3560_id_table[] = {
458653d500cSPavel Machek {LM3559_NAME, 0},
4597f6b11a1SDaniel Jeong {LM3560_NAME, 0},
4607f6b11a1SDaniel Jeong {}
4617f6b11a1SDaniel Jeong };
4627f6b11a1SDaniel Jeong
4637f6b11a1SDaniel Jeong MODULE_DEVICE_TABLE(i2c, lm3560_id_table);
4647f6b11a1SDaniel Jeong
4657f6b11a1SDaniel Jeong static struct i2c_driver lm3560_i2c_driver = {
4667f6b11a1SDaniel Jeong .driver = {
4677f6b11a1SDaniel Jeong .name = LM3560_NAME,
4687f6b11a1SDaniel Jeong .pm = NULL,
4697f6b11a1SDaniel Jeong },
470*aaeb31c0SUwe Kleine-König .probe = lm3560_probe,
4717f6b11a1SDaniel Jeong .remove = lm3560_remove,
4727f6b11a1SDaniel Jeong .id_table = lm3560_id_table,
4737f6b11a1SDaniel Jeong };
4747f6b11a1SDaniel Jeong
4757f6b11a1SDaniel Jeong module_i2c_driver(lm3560_i2c_driver);
4767f6b11a1SDaniel Jeong
4777f6b11a1SDaniel Jeong MODULE_AUTHOR("Daniel Jeong <gshark.jeong@gmail.com>");
4787f6b11a1SDaniel Jeong MODULE_AUTHOR("Ldd Mlp <ldd-mlp@list.ti.com>");
4797f6b11a1SDaniel Jeong MODULE_DESCRIPTION("Texas Instruments LM3560 LED flash driver");
4807f6b11a1SDaniel Jeong MODULE_LICENSE("GPL");
481