himax_platform.c

// SPDX-License-Identifier: GPL-2.0
/*  Himax Android Driver Sample Code for QCT platform
 *
 *  Copyright (C) 2019 Himax Corporation.
 *
 *  This software is licensed under the terms of the GNU General Public
 *  License version 2,  as published by the Free Software Foundation,  and
 *  may be copied,  distributed,  and modified under those terms.
 *
 *  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.
 */

#include "himax_platform.h"
#include "himax_common.h"

int i2c_error_count;
bool ic_boot_done;
struct spi_device *spi;

static uint8_t *g_w_xfer_data;
static uint8_t *g_r_xfer_data;

int himax_dev_set(struct himax_ts_data *ts)
{
	int ret = 0;

	ts->input_dev = input_allocate_device();

	if (ts->input_dev == NULL) {
		ret = -ENOMEM;
		E("%s: Failed to allocate input device\n", __func__);
		return ret;
	}

	ts->input_dev->name = "himax-touchscreen";

	if (!ic_data->HX_STYLUS_FUNC)
		goto skip_stylus_operation;

	ts->stylus_dev = input_allocate_device();

	if (ts->stylus_dev == NULL) {
		ret = -ENOMEM;
		E("%s: Failed to allocate input device-stylus_dev\n", __func__);
		input_free_device(ts->input_dev);
		return ret;
	}

	ts->stylus_dev->name = "himax-stylus";
skip_stylus_operation:

	return ret;
}
int himax_input_register_device(struct input_dev *input_dev)
{
	return input_register_device(input_dev);
}

void himax_vk_parser(struct device_node *dt, struct himax_platform_data *pdata)
{
	u32 data = 0;
	uint8_t cnt = 0, i = 0;
	uint32_t coords[4] = {0};
	struct device_node *node, *pp = NULL;
	struct himax_virtual_key *vk;

	node = of_parse_phandle(dt, "virtualkey", 0);

	if (node == NULL) {
		I(" DT-No vk info in DT\n");
		return;
	}
	while ((pp = of_get_next_child(node, pp)))
		cnt++;

	if (!cnt)
		return;

	vk = kcalloc(cnt, sizeof(struct himax_virtual_key), GFP_KERNEL);
	if (vk == NULL) {
		E("%s, vk init fail!\n", __func__);
		return;
	}
	pp = NULL;

	while ((pp = of_get_next_child(node, pp))) {
		if (of_property_read_u32(pp, "idx", &data) == 0)
			vk[i].index = data;

		if (of_property_read_u32_array(pp, "range", coords, 4) == 0) {
			vk[i].x_range_min = coords[0];
			vk[i].x_range_max = coords[1];
			vk[i].y_range_min = coords[2];
			vk[i].y_range_max = coords[3];
		} else {
			I(" range faile\n");
		}

		i++;
	}

	pdata->virtual_key = vk;

	for (i = 0; i < cnt; i++)
		I(" vk[%d] idx:%d x_min:%d, y_max:%d\n", i,
				pdata->virtual_key[i].index,
				pdata->virtual_key[i].x_range_min,
				pdata->virtual_key[i].y_range_max);

}

#if defined(HX_CONFIG_DRM_PANEL)
struct drm_panel *active_panel;

int himax_ts_check_dt(struct device_node *np)
{
	int i = 0;
	int count = 0;
	struct device_node *node = NULL;
	struct drm_panel *panel = NULL;

	I("%s start\n",	__func__);
	count = of_count_phandle_with_args(np, "panel", NULL);
	if (count <= 0) {
		I("%s count= %d\n", __func__, count);
		return 0;
	}

	for (i = 0; i < count; i++) {
		node = of_parse_phandle(np, "panel", i);
		panel = of_drm_find_panel(node);
		of_node_put(node);
		if (!IS_ERR(panel)) {
			I("%s find drm_panel successfully\n", __func__);
			active_panel = panel;
			I("active_panel=%s\n", active_panel);
			return 0;
		}
	}
	E("%s find drm_panel failed\n", __func__);
	return PTR_ERR(panel);
}
#endif

static int himax_check_panel_map(struct device_node *np,
	struct himax_platform_data *pdata)
{
	int ret = 0;
	int index;
	struct of_phandle_args panelmap;
	struct drm_panel *panel = NULL;

	if (of_property_read_bool(np, "himax,panel_map")) {
		for (index = 0 ;; index++) {
			ret = of_parse_phandle_with_fixed_args(np,
					"himax,panel_map",
					1,
					index,
					&panelmap);
			if (ret) {
				E("%s: Can't find display panel!\n", __func__);
				return -EPROBE_DEFER;
			}
			panel = of_drm_find_panel(panelmap.np);
			of_node_put(panelmap.np);
			if (!IS_ERR_OR_NULL(panel)) {
				pdata->panel = panel;
				pdata->initial_panel_index = panelmap.args[0];
				break;
			}
		}
	}
	return 0;
}

int himax_parse_dt(struct himax_ts_data *ts, struct himax_platform_data *pdata)
{
	int coords_size = 0;
	uint32_t coords[4] = {0};
	struct property *prop;
	struct device_node *dt = ts->dev->of_node;
	u32 data = 0;
	int ret = 0;
#if defined(HX_CONFIG_DRM)
#if defined(HX_CONFIG_DRM_PANEL)
	ret = himax_ts_check_dt(dt);
	if (ret == -EPROBE_DEFER)
		E("himax_ts_check_dt failed\n");
#endif
#endif

	/* Check if panel(s) exist or not. */
	ret = himax_check_panel_map(dt, pdata);
	if (ret)
		return ret;

	prop = of_find_property(dt, "himax,panel-coords", NULL);
	if (prop) {
		coords_size = prop->length / sizeof(u32);
		if (coords_size != 4)
			D(" %s:Invalid panel coords size %d\n",
				__func__, coords_size);
	}

	ret = of_property_read_u32_array(dt, "himax,panel-coords",
			coords, coords_size);
	if (ret == 0) {
		pdata->abs_x_min = coords[0];
		pdata->abs_x_max = (coords[1] - 1);
		pdata->abs_y_min = coords[2];
		pdata->abs_y_max = (coords[3] - 1);
		I(" DT-%s:panel-coords = %d, %d, %d, %d\n", __func__,
				pdata->abs_x_min,
				pdata->abs_x_max,
				pdata->abs_y_min,
				pdata->abs_y_max);
	}

	prop = of_find_property(dt, "himax,display-coords", NULL);
	if (prop) {
		coords_size = prop->length / sizeof(u32);
		if (coords_size != 4)
			D(" %s:Invalid display coords size %d\n",
				__func__, coords_size);
	}

	ret = of_property_read_u32_array(dt, "himax,display-coords",
			coords, coords_size);
	if (ret && (ret != -EINVAL)) {
		D(" %s:Fail to read display-coords %d\n", __func__, ret);
		return ret;
	}
	pdata->screenWidth  = coords[1];
	pdata->screenHeight = coords[3];
	I(" DT-%s:display-coords = (%d, %d)\n", __func__,
			pdata->screenWidth,
			pdata->screenHeight);

	pdata->gpio_irq = of_get_named_gpio(dt, "himax,irq-gpio", 0);
	if (!gpio_is_valid(pdata->gpio_irq))
		I(" DT:gpio_irq value is not valid\n");

	pdata->gpio_reset = of_get_named_gpio(dt, "himax,rst-gpio", 0);
	if (!gpio_is_valid(pdata->gpio_reset))
		I(" DT:gpio_rst value is not valid\n");

	pdata->gpio_3v3_en = of_get_named_gpio(dt, "himax,3v3-gpio", 0);
	if (!gpio_is_valid(pdata->gpio_3v3_en))
		I(" DT:gpio_3v3_en value is not valid\n");

	I(" DT:gpio_irq=%d, gpio_rst=%d, gpio_3v3_en=%d\n",
			pdata->gpio_irq,
			pdata->gpio_reset,
			pdata->gpio_3v3_en);

#if defined(HX_PON_PIN_SUPPORT)
	pdata->gpio_pon = of_get_named_gpio(dt, "himax,pon-gpio", 0);

	if (!gpio_is_valid(pdata->gpio_pon))
		I(" DT:gpio_pon value is not valid\n");

	pdata->lcm_rst = of_get_named_gpio(dt, "himax,lcm-rst", 0);

	if (!gpio_is_valid(pdata->lcm_rst))
		I(" DT:tp-rst value is not valid\n");

	I(" DT:pdata->gpio_pon=%d, pdata->lcm_rst=%d\n",
		pdata->gpio_pon, pdata->lcm_rst);
#endif

	if (of_property_read_u32(dt, "report_type", &data) == 0) {
		pdata->protocol_type = data;
		I(" DT:protocol_type=%d\n", pdata->protocol_type);
	}
	himax_vk_parser(dt, pdata);

	return 0;
}
EXPORT_SYMBOL(himax_parse_dt);

#if defined(HX_PARSE_FROM_DT)
static void hx_generate_ic_info_from_dt(
	uint32_t proj_id, char *buff, char *main_str, char *item_str)
{
	if (proj_id == 0xffff)
		snprintf(buff, 128, "%s,%s", main_str, item_str);
	else
		snprintf(buff, 128, "%s_%04X,%s", main_str, proj_id, item_str);

}
static void hx_generate_fw_name_from_dt(
	uint32_t proj_id, char *buff, char *main_str, char *item_str)
{
	if (proj_id == 0xffff)
		snprintf(buff, 128, "%s_%s", main_str, item_str);
	else
		snprintf(buff, 128, "%s_%04X_%s", main_str, proj_id, item_str);

}

void himax_parse_dt_ic_info(struct himax_ts_data *ts,
		struct himax_platform_data *pdata)
{
	struct device_node *dt = ts->dev->of_node;
	u32 data = 0;
	char *str_rx_num = "rx-num";
	char *str_tx_num = "tx-num";
	char *str_bt_num = "bt-num";
	char *str_max_pt = "max-pt";
	char *str_int_edge = "int-edge";
	char *str_stylus_func = "stylus-func";
	char *str_firmware_name_tail = "firmware.bin";
	char *str_mp_firmware_name_tail = "mpfw.bin";
	char buff[128] = {0};

	hx_generate_ic_info_from_dt(g_proj_id, buff, ts->chip_name, str_rx_num);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_RX_NUM = data;
		I("%s,Now parse:%s=%d\n", __func__, buff, ic_data->HX_RX_NUM);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_ic_info_from_dt(g_proj_id, buff, ts->chip_name, str_tx_num);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_TX_NUM = data;
		I("%s,Now parse:%s=%d\n", __func__, buff, ic_data->HX_TX_NUM);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_ic_info_from_dt(g_proj_id, buff, ts->chip_name, str_bt_num);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_BT_NUM = data;
		I("%s,Now parse:%s=%d\n", __func__, buff, ic_data->HX_BT_NUM);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_ic_info_from_dt(g_proj_id, buff, ts->chip_name, str_max_pt);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_MAX_PT = data;
		I("%s,Now parse:%s=%d\n", __func__, buff, ic_data->HX_MAX_PT);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_ic_info_from_dt(
			g_proj_id, buff, ts->chip_name, str_int_edge);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_INT_IS_EDGE = data;
		I("%s,Now parse:%s=%d\n",
			__func__, buff, ic_data->HX_INT_IS_EDGE);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_ic_info_from_dt(g_proj_id, buff,
		ts->chip_name, str_stylus_func);
	if (of_property_read_u32(dt, buff, &data) == 0) {
		ic_data->HX_STYLUS_FUNC = data;
		I("%s,Now parse:%s=%d\n",
			__func__, buff, ic_data->HX_STYLUS_FUNC);
	} else
		I("%s, No definition: %s!\n", __func__, buff);

	hx_generate_fw_name_from_dt(g_proj_id, buff, ts->chip_name,
		str_firmware_name_tail);
	I("%s,buff=%s!\n", __func__, buff);
#if defined(HX_BOOT_UPGRADE)
	g_fw_boot_upgrade_name = kzalloc(sizeof(buff), GFP_KERNEL);
	memcpy(&g_fw_boot_upgrade_name[0], &buff[0], sizeof(buff));
	I("%s,g_fw_boot_upgrade_name=%s!\n",
		__func__, g_fw_boot_upgrade_name);
#endif

	hx_generate_fw_name_from_dt(g_proj_id, buff, ts->chip_name,
		str_mp_firmware_name_tail);
	I("%s,buff=%s!\n", __func__, buff);
#if defined(HX_ZERO_FLASH)
	g_fw_mp_upgrade_name = kzalloc(sizeof(buff), GFP_KERNEL);
	memcpy(&g_fw_mp_upgrade_name[0], &buff[0], sizeof(buff));
	I("%s,g_fw_mp_upgrade_name=%s!\n", __func__, g_fw_mp_upgrade_name);
#endif

	I(" DT:rx, tx, bt, pt, int, stylus\n");
	I(" DT:%d, %d, %d, %d, %d, %d\n", ic_data->HX_RX_NUM,
		ic_data->HX_TX_NUM, ic_data->HX_BT_NUM, ic_data->HX_MAX_PT,
		ic_data->HX_INT_IS_EDGE, ic_data->HX_STYLUS_FUNC);
}
EXPORT_SYMBOL(himax_parse_dt_ic_info);
#endif

static int himax_spi_read(uint8_t *command, uint8_t command_len, uint8_t *data,
	uint32_t length)
{
	struct spi_message m;
	int result = NO_ERR;
	int retry;
	int error;
	struct spi_transfer	t = {
		.len	= command_len + length,
	};

	memset(g_w_xfer_data, 0, command_len + length);
	memcpy(g_w_xfer_data, command, command_len);

	t.tx_buf = g_w_xfer_data;
	t.rx_buf = g_r_xfer_data;

	if (length > HX_MAX_READ_SZ) {
		E("%s, data length is over than MAX SIZE!\n", __func__);
		result = -EIO;
		goto END;
	}

	spi_message_init(&m);
	spi_message_add_tail(&t, &m);


	for (retry = 0; retry < HIMAX_BUS_RETRY_TIMES; retry++) {
		error = spi_sync(private_ts->spi, &m);
		if (unlikely(error))
			E("SPI read error: %d\n", error);
		else
			break;
	}

	if (retry == HIMAX_BUS_RETRY_TIMES) {
		E("%s: SPI read error retry over %d\n",
			__func__, HIMAX_BUS_RETRY_TIMES);
		result = -EIO;
		goto END;
	} else {
		memcpy(&data[0], &g_r_xfer_data[command_len],
		sizeof(uint8_t) * length);
	}

END:
	return result;
}

static int himax_spi_write(uint8_t *buf, uint32_t length)
{
	int status;
	struct spi_message	m;
	struct spi_transfer	t = {
			.tx_buf		= buf,
			.len		= length,
	};

	spi_message_init(&m);
	spi_message_add_tail(&t, &m);

	status = spi_sync(private_ts->spi, &m);

	if (status == 0) {
		status = m.status;
		if (status == 0)
			status = m.actual_length;
	}
	return status;

}

int himax_bus_read(uint8_t command, uint8_t *data, uint32_t length)
{
	int result = 0;
	uint8_t *spi_format_buf = g_r_xfer_data;

	mutex_lock(&(private_ts->rw_lock));
	spi_format_buf[0] = 0xF3;
	spi_format_buf[1] = command;
	spi_format_buf[2] = 0x00;

	result = himax_spi_read(&spi_format_buf[0], 3, data, length);
	mutex_unlock(&(private_ts->rw_lock));

	return result;
}
EXPORT_SYMBOL(himax_bus_read);

int himax_bus_write(uint8_t command, uint8_t *data, uint32_t length)
{
	uint8_t *spi_format_buf = g_w_xfer_data;
	int result = 0;

	mutex_lock(&(private_ts->rw_lock));
	spi_format_buf[0] = 0xF2;
	spi_format_buf[1] = command;

	memcpy(spi_format_buf + 2, data, length);

	result = himax_spi_write(spi_format_buf, length + 2);
	mutex_unlock(&(private_ts->rw_lock));

	return result;
}
EXPORT_SYMBOL(himax_bus_write);

void himax_int_enable(int enable)
{
	struct himax_ts_data *ts = private_ts;
	unsigned long irqflags = 0;
	int irqnum = ts->hx_irq;

	spin_lock_irqsave(&ts->irq_lock, irqflags);
	I("%s: Entering! irqnum = %d\n", __func__, irqnum);
	if (enable == 1 && atomic_read(&ts->irq_state) == 0) {
		atomic_set(&ts->irq_state, 1);
		enable_irq(irqnum);
		private_ts->irq_enabled = 1;
	} else if (enable == 0 && atomic_read(&ts->irq_state) == 1) {
		atomic_set(&ts->irq_state, 0);
		disable_irq_nosync(irqnum);
		private_ts->irq_enabled = 0;
	}

	I("enable = %d\n", enable);
	spin_unlock_irqrestore(&ts->irq_lock, irqflags);
}
EXPORT_SYMBOL(himax_int_enable);

#if defined(HX_RST_PIN_FUNC)
void himax_rst_gpio_set(int pinnum, uint8_t value)
{
	gpio_direction_output(pinnum, value);
}
EXPORT_SYMBOL(himax_rst_gpio_set);
#endif

uint8_t himax_int_gpio_read(int pinnum)
{
	return gpio_get_value(pinnum);
}

#if defined(CONFIG_HMX_DB)
static int himax_regulator_configure(struct himax_platform_data *pdata)
{
	int retval;
	/* struct i2c_client *client = private_ts->client; */

	pdata->vcc_dig = regulator_get(private_ts->dev, "vdd");

	if (IS_ERR(pdata->vcc_dig)) {
		E("%s: Failed to get regulator vdd\n",
		  __func__);
		retval = PTR_ERR(pdata->vcc_dig);
		return retval;
	}

	pdata->vcc_ana = regulator_get(private_ts->dev, "avdd");

	if (IS_ERR(pdata->vcc_ana)) {
		E("%s: Failed to get regulator avdd\n",
		  __func__);
		retval = PTR_ERR(pdata->vcc_ana);
		regulator_put(pdata->vcc_dig);
		return retval;
	}

	return 0;
};

static void himax_regulator_deinit(struct himax_platform_data *pdata)
{
	I("%s: entered.\n", __func__);

	if (!IS_ERR(pdata->vcc_ana))
		regulator_put(pdata->vcc_ana);

	if (!IS_ERR(pdata->vcc_dig))
		regulator_put(pdata->vcc_dig);

	I("%s: regulator put, completed.\n", __func__);
};

static int himax_power_on(struct himax_platform_data *pdata, bool on)
{
	int retval;

	if (on) {
		retval = regulator_enable(pdata->vcc_dig);

		if (retval) {
			E("%s: Failed to enable regulator vdd\n",
					__func__);
			return retval;
		}

		/*msleep(100);*/
		usleep_range(1000, 1001);
		retval = regulator_enable(pdata->vcc_ana);

		if (retval) {
			E("%s: Failed to enable regulator avdd\n",
					__func__);
			regulator_disable(pdata->vcc_dig);
			return retval;
		}
	} else {
		regulator_disable(pdata->vcc_dig);
		regulator_disable(pdata->vcc_ana);
	}

	return 0;
}

int himax_gpio_power_config(struct himax_platform_data *pdata)
{
	int error;
	/* struct i2c_client *client = private_ts->client; */

	error = himax_regulator_configure(pdata);

	if (error) {
		E("Failed to intialize hardware\n");
		goto err_regulator_not_on;
	}

#if defined(HX_RST_PIN_FUNC)

	if (gpio_is_valid(pdata->gpio_reset)) {
		/* configure touchscreen reset out gpio */
		error = gpio_request(pdata->gpio_reset, "hmx_reset_gpio");

		if (error) {
			E("unable to request gpio [%d]\n", pdata->gpio_reset);
			goto err_gpio_reset_req;
		}

		error = gpio_direction_output(pdata->gpio_reset, 0);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
			  pdata->gpio_reset);
			goto err_gpio_reset_dir;
		}
	}

#endif
#if defined(HX_PON_PIN_SUPPORT)
	if (pdata->lcm_rst >= 0) {
		error = gpio_direction_output(pdata->lcm_rst, 0);
		if (error) {
			E("unable to set direction for lcm_rst [%d]\n",
				pdata->lcm_rst);
		}
	}
#endif
	error = himax_power_on(pdata, true);

	if (error) {
		E("Failed to power on hardware\n");
		goto err_power_on;
	}

	if (gpio_is_valid(pdata->gpio_irq)) {
		/* configure touchscreen irq gpio */
		error = gpio_request(pdata->gpio_irq, "hmx_gpio_irq");

		if (error) {
			E("unable to request gpio [%d]\n",
			  pdata->gpio_irq);
			goto err_req_irq_gpio;
		}

		error = gpio_direction_input(pdata->gpio_irq);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
			  pdata->gpio_irq);
			goto err_set_gpio_irq;
		}

		private_ts->hx_irq = gpio_to_irq(pdata->gpio_irq);
	} else {
		E("irq gpio not provided\n");
		goto err_req_irq_gpio;
	}
#if defined(HX_PON_PIN_SUPPORT)
	if (pdata->lcm_rst >= 0) {
		error = gpio_direction_output(pdata->lcm_rst, 1);

		if (error) {
			E("lcm_rst unable to set direction for gpio [%d]\n",
				pdata->lcm_rst);
		}
	}
#endif
	/*msleep(20);*/
	usleep_range(2000, 2001);
#if defined(HX_RST_PIN_FUNC)

	if (gpio_is_valid(pdata->gpio_reset)) {
		error = gpio_direction_output(pdata->gpio_reset, 1);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
					pdata->gpio_reset);
			goto err_gpio_reset_set_high;
		}
	}

#endif
	return 0;
#if defined(HX_RST_PIN_FUNC)
err_gpio_reset_set_high:
#endif
err_set_gpio_irq:
	if (gpio_is_valid(pdata->gpio_irq))
		gpio_free(pdata->gpio_irq);

err_req_irq_gpio:
	himax_power_on(pdata, false);
err_power_on:
#if defined(HX_RST_PIN_FUNC)
err_gpio_reset_dir:
	if (gpio_is_valid(pdata->gpio_reset))
		gpio_free(pdata->gpio_reset);

err_gpio_reset_req:
#endif
	himax_regulator_deinit(pdata);
err_regulator_not_on:
	return error;
}

#else  //#if defined(CONFIG_HMX_DB)
int himax_gpio_power_config(struct himax_platform_data *pdata)
{
	int error = 0;
#if defined(HX_RST_PIN_FUNC)
	if (pdata->gpio_reset >= 0) {
		error = gpio_request_one(pdata->gpio_reset, GPIOF_OUT_INIT_HIGH, "himax-reset");

		if (error < 0) {
			E("%s: request reset pin failed\n", __func__);
			goto err_gpio_reset_req;
		}

		error = gpio_direction_output(pdata->gpio_reset, 0);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
					pdata->gpio_reset);
			goto err_gpio_reset_dir;
		}
	}
#endif

#if defined(HX_PON_PIN_SUPPORT)
	if (pdata->lcm_rst >= 0) {
		error = gpio_direction_output(pdata->lcm_rst, 0);
		if (error) {
			E("unable to set direction for lcm_rst [%d]\n",
				pdata->lcm_rst);
		}
	}

	if (gpio_is_valid(pdata->gpio_pon)) {
		error = gpio_request(pdata->gpio_pon, "hmx_pon_gpio");

		if (error) {
			E("unable to request pon gpio [%d]\n", pdata->gpio_pon);
			goto err_gpio_pon_req;
		}

		error = gpio_direction_output(pdata->gpio_pon, 0);

		I("gpio_pon LOW [%d]\n", pdata->gpio_pon);

		if (error) {
			E("unable to set direction for pon gpio [%d]\n",
				pdata->gpio_pon);
			goto err_gpio_pon_dir;
		}
	}
#endif


	if (pdata->gpio_3v3_en >= 0) {
		error = gpio_request(pdata->gpio_3v3_en, "himax-3v3_en");

		if (error < 0) {
			E("%s: request 3v3_en pin failed\n", __func__);
			goto err_gpio_3v3_req;
		}

		gpio_direction_output(pdata->gpio_3v3_en, 1);
		I("3v3_en set 1 get pin = %d\n",
			gpio_get_value(pdata->gpio_3v3_en));
	}

	if (gpio_is_valid(pdata->gpio_irq)) {
		/* configure touchscreen irq gpio */
		error = gpio_request_one(pdata->gpio_irq, GPIOF_DIR_IN, "himax-irq");

		if (error) {
			E("unable to request gpio [%d]\n", pdata->gpio_irq);
			goto err_gpio_irq_req;
		}

		error = gpio_direction_input(pdata->gpio_irq);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
				pdata->gpio_irq);
			goto err_gpio_irq_set_input;
		}

		private_ts->hx_irq = gpio_to_irq(pdata->gpio_irq);
	} else {
		E("irq gpio not provided\n");
		goto err_gpio_irq_req;
	}

	usleep_range(2000, 2001);

#if defined(HX_PON_PIN_SUPPORT)
	msleep(20);

	if (pdata->lcm_rst >= 0) {
		error = gpio_direction_output(pdata->lcm_rst, 1);

		if (error) {
			E("lcm_rst unable to set direction for gpio [%d]\n",
				pdata->lcm_rst);
		}
	}
	msleep(20);
#endif

#if defined(HX_RST_PIN_FUNC)

	if (pdata->gpio_reset >= 0) {
		error = gpio_direction_output(pdata->gpio_reset, 1);

		if (error) {
			E("unable to set direction for gpio [%d]\n",
			  pdata->gpio_reset);
			goto err_gpio_reset_set_high;
		}
	}
#endif

#if defined(HX_PON_PIN_SUPPORT)
	msleep(800);

	if (gpio_is_valid(pdata->gpio_pon)) {

		error = gpio_direction_output(pdata->gpio_pon, 1);

		I("gpio_pon HIGH [%d]\n", pdata->gpio_pon);

		if (error) {
			E("gpio_pon unable to set direction for gpio [%d]\n",
					pdata->gpio_pon);
			goto err_gpio_pon_set_high;
		}
	}
#endif
	return error;

#if defined(HX_PON_PIN_SUPPORT)
err_gpio_pon_set_high:
#endif
#if defined(HX_RST_PIN_FUNC)
err_gpio_reset_set_high:
#endif
err_gpio_irq_set_input:
	if (gpio_is_valid(pdata->gpio_irq))
		gpio_free(pdata->gpio_irq);
err_gpio_irq_req:
	if (pdata->gpio_3v3_en >= 0)
		gpio_free(pdata->gpio_3v3_en);
err_gpio_3v3_req:
#if defined(HX_PON_PIN_SUPPORT)
err_gpio_pon_dir:
	if (gpio_is_valid(pdata->gpio_pon))
		gpio_free(pdata->gpio_pon);
err_gpio_pon_req:
#endif
#if defined(HX_RST_PIN_FUNC)
err_gpio_reset_dir:
	if (pdata->gpio_reset >= 0)
		gpio_free(pdata->gpio_reset);
err_gpio_reset_req:
#endif
	return error;
}

#endif

void himax_gpio_power_deconfig(struct himax_platform_data *pdata)
{
	if (gpio_is_valid(pdata->gpio_irq))
		gpio_free(pdata->gpio_irq);

#if defined(HX_RST_PIN_FUNC)
	if (gpio_is_valid(pdata->gpio_reset))
		gpio_free(pdata->gpio_reset);
#endif

#if defined(CONFIG_HMX_DB)
	himax_power_on(pdata, false);
	himax_regulator_deinit(pdata);
#else
	if (pdata->gpio_3v3_en >= 0)
		gpio_free(pdata->gpio_3v3_en);

#if defined(HX_PON_PIN_SUPPORT)
	if (gpio_is_valid(pdata->gpio_pon))
		gpio_free(pdata->gpio_pon);
#endif

#endif
}

static void himax_ts_isr_func(struct himax_ts_data *ts)
{
	himax_ts_work(ts);
}

irqreturn_t himax_ts_thread(int irq, void *ptr)
{
	struct himax_ts_data *ts = (struct himax_ts_data *)ptr;
	if (himax_ts_set_bus_ref(ts, HIMAX_TS_BUS_REF_IRQ, true) < 0) {
		/* Interrupt during bus suspend */
		I("%s: Skipping stray interrupt since bus is suspended(power_status: %d)\n",
			__func__, ts->power_status);
		return IRQ_HANDLED;
	}

	himax_ts_isr_func((struct himax_ts_data *)ptr);

	himax_ts_set_bus_ref(ts, HIMAX_TS_BUS_REF_IRQ, false);

	return IRQ_HANDLED;
}

static void himax_ts_work_func(struct work_struct *work)
{
	struct himax_ts_data *ts = container_of(work,
		struct himax_ts_data, work);

	himax_ts_work(ts);
}

int himax_int_register_trigger(void)
{
	int ret = 0;
	struct himax_ts_data *ts = private_ts;

	if (ic_data->HX_INT_IS_EDGE) {
		I("%s edge triiger falling\n", __func__);
		ret = request_threaded_irq(ts->hx_irq, NULL, himax_ts_thread,
			IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
			HIMAX_common_NAME, ts);
	} else {
		I("%s level trigger low\n", __func__);
		ret = request_threaded_irq(ts->hx_irq, NULL, himax_ts_thread,
			IRQF_TRIGGER_LOW | IRQF_ONESHOT, HIMAX_common_NAME, ts);
	}

	return ret;
}

int himax_int_en_set(void)
{
	int ret = NO_ERR;

	ret = himax_int_register_trigger();
	return ret;
}

int himax_ts_register_interrupt(void)
{
	struct himax_ts_data *ts = private_ts;
	/* struct i2c_client *client = private_ts->client; */
	int ret = 0;

	ts->irq_enabled = 0;

	/* Work functon */
	if (private_ts->hx_irq) {/*INT mode*/
		ts->use_irq = 1;
		ret = himax_int_register_trigger();

		if (ret == 0) {
			ts->irq_enabled = 1;
			atomic_set(&ts->irq_state, 1);
			I("%s: irq enabled at gpio: %d\n", __func__,
				private_ts->hx_irq);
#if defined(HX_SMART_WAKEUP)
			irq_set_irq_wake(private_ts->hx_irq, 1);
#endif
		} else {
			ts->use_irq = 0;
			E("%s: request_irq failed\n", __func__);
		}
	} else {
		I("%s: private_ts->hx_irq is empty, use polling mode.\n",
			__func__);
	}

	/*if use polling mode need to disable HX_ESD_RECOVERY function*/
	if (!ts->use_irq) {
		ts->himax_wq = create_singlethread_workqueue("himax_touch");
		INIT_WORK(&ts->work, himax_ts_work_func);
		hrtimer_init(&ts->timer, CLOCK_MONOTONIC, HRTIMER_MODE_REL);
		ts->timer.function = himax_ts_timer_func;
		hrtimer_start(&ts->timer, ktime_set(1, 0), HRTIMER_MODE_REL);
		I("%s: polling mode enabled\n", __func__);
	}

	return ret;
}

int himax_ts_unregister_interrupt(void)
{
	struct himax_ts_data *ts = private_ts;
	int ret = 0;

	I("%s: entered.\n", __func__);

	/* Work functon */
	if (private_ts->hx_irq && ts->use_irq) {/*INT mode*/
#if defined(HX_SMART_WAKEUP)
		irq_set_irq_wake(ts->hx_irq, 0);
#endif
		free_irq(ts->hx_irq, ts);
		I("%s: irq disabled at qpio: %d\n", __func__,
			private_ts->hx_irq);
	}

	/*if use polling mode need to disable HX_ESD_RECOVERY function*/
	if (!ts->use_irq) {
		hrtimer_cancel(&ts->timer);
		cancel_work_sync(&ts->work);
		if (ts->himax_wq != NULL)
			destroy_workqueue(ts->himax_wq);
		I("%s: polling mode destroyed", __func__);
	}

	return ret;
}

static int himax_common_suspend(struct device *dev)
{
	struct himax_ts_data *ts = dev_get_drvdata(dev);

	I("%s: enter\n", __func__);
#if defined(HX_CONFIG_DRM) && !defined(HX_CONFIG_FB)
	if (!ts->initialized)
		return -ECANCELED;
#endif
	himax_chip_common_suspend(ts);
	return 0;
}
#if !defined(HX_CONTAINER_SPEED_UP)
static int himax_common_resume(struct device *dev)
{
	struct himax_ts_data *ts = dev_get_drvdata(dev);

	I("%s: enter\n", __func__);
#if defined(HX_CONFIG_DRM) && !defined(HX_CONFIG_FB)
	/*
	 *	wait until device resume for TDDI
	 *	TDDI: Touch and display Driver IC
	 */
	if (!ts->initialized) {
		if (himax_chip_common_init())
			return -ECANCELED;
	}
#endif
	himax_chip_common_resume(ts);
	return 0;
}
#endif

#if defined(HX_CONFIG_FB)
int fb_notifier_callback(struct notifier_block *self,
		unsigned long event, void *data)
{
	struct fb_event *evdata = data;
	int *blank;
	struct himax_ts_data *ts =
	    container_of(self, struct himax_ts_data, fb_notif);

	I(" %s\n", __func__);

	if (ic_boot_done != 1) {
		E("%s: IC is booting\n", __func__);
		return -ECANCELED;
	}

	if (evdata && evdata->data &&
#if defined(HX_CONTAINER_SPEED_UP)
		event == FB_EARLY_EVENT_BLANK
#else
		event == FB_EVENT_BLANK
#endif
		&& ts != NULL &&
		ts->dev != NULL) {
		blank = evdata->data;

		switch (*blank) {
		case FB_BLANK_UNBLANK:
#if defined(HX_CONTAINER_SPEED_UP)
			queue_delayed_work(ts->ts_int_workqueue,
				&ts->ts_int_work,
				msecs_to_jiffies(DELAY_TIME));
#else
				himax_common_resume(ts->dev);
#endif
			break;

		case FB_BLANK_POWERDOWN:
		case FB_BLANK_HSYNC_SUSPEND:
		case FB_BLANK_VSYNC_SUSPEND:
		case FB_BLANK_NORMAL:
			himax_common_suspend(ts->dev);
			break;
		}
	}

	return 0;
}
#elif defined(HX_CONFIG_DRM_PANEL)
int drm_notifier_callback(struct notifier_block *self,
		unsigned long event, void *data)
{
	struct drm_panel_notifier *evdata = data;
	int *blank;
	struct himax_ts_data *ts =
		container_of(self, struct himax_ts_data, fb_notif);

	if (!evdata)
		return 0;

	D("DRM  %s\n", __func__);

	if (ic_boot_done != 1) {
		E("%s: IC is booting\n", __func__);
		return -ECANCELED;
	}

	if (evdata->data
	&& event == DRM_PANEL_EARLY_EVENT_BLANK
	&& ts
	&& ts->client) {
		blank = evdata->data;
		switch (*blank) {
		case DRM_PANEL_BLANK_POWERDOWN:
			if (!ts->initialized)
				return -ECANCELED;
			himax_common_suspend(&ts->client->dev);
			break;
		}
	}

	if (evdata->data
	&& event == DRM_PANEL_EVENT_BLANK
	&& ts
	&& ts->client) {
		blank = evdata->data;
		switch (*blank) {
		case DRM_PANEL_BLANK_UNBLANK:
			himax_common_resume(&ts->client->dev);
			break;
		}
	}

	return 0;
}
#elif defined(HX_CONFIG_DRM)
int drm_notifier_callback(struct notifier_block *self,
		unsigned long event, void *data)
{
	struct msm_drm_notifier *evdata = data;
	int *blank;
	struct himax_ts_data *ts =
		container_of(self, struct himax_ts_data, fb_notif);

	if (!evdata || (evdata->id != 0))
		return 0;

	D("DRM  %s\n", __func__);

	if (ic_boot_done != 1) {
		E("%s: IC is booting\n", __func__);
		return -ECANCELED;
	}

	if (evdata->data
	&& event == MSM_DRM_EARLY_EVENT_BLANK
	&& ts != NULL
	&& ts->dev != NULL) {
		blank = evdata->data;
		switch (*blank) {
		case MSM_DRM_BLANK_POWERDOWN:
			if (!ts->initialized)
				return -ECANCELED;
			himax_common_suspend(ts->dev);
			break;
		}
	}

	if (evdata->data
	&& event == MSM_DRM_EVENT_BLANK
	&& ts != NULL
	&& ts->dev != NULL) {
		blank = evdata->data;
		switch (*blank) {
		case MSM_DRM_BLANK_UNBLANK:
			himax_common_resume(ts->dev);
			break;
		}
	}

	return 0;
}
#endif

int himax_chip_common_probe(struct spi_device *spi)
{
	struct himax_ts_data *ts;
	int ret = 0;

	I("Enter %s\n", __func__);
	if (spi->master->flags & SPI_MASTER_HALF_DUPLEX) {
		dev_err(&spi->dev,
			"%s: Full duplex not supported by host\n",
			__func__);
		return -EIO;
	}

	/* command[2] + address[4] + data[] */
	g_w_xfer_data = kzalloc(sizeof(uint8_t) * (HX_MAX_WRITE_SZ+6),
		GFP_KERNEL);
	if (g_w_xfer_data == NULL) {
		E("%s: allocate g_w_xfer_data failed\n", __func__);
		ret = -ENOMEM;
		goto err_alloc_g_w_xfer_data_failed;
	}

	g_r_xfer_data = kzalloc(sizeof(uint8_t) * HX_MAX_READ_SZ,
		GFP_KERNEL);
	if (g_r_xfer_data == NULL) {
		E("%s, allocate g_r_xfer_data fail!\n", __func__);
		ret = -ENOMEM;
		goto err_alloc_g_r_xfer_data_failed;
	}

	ts = kzalloc(sizeof(struct himax_ts_data), GFP_KERNEL);
	if (ts == NULL) {
		E("%s: allocate himax_ts_data failed\n", __func__);
		ret = -ENOMEM;
		goto err_alloc_data_failed;
	}

	private_ts = ts;
	spi->bits_per_word = 8;
	spi->mode = SPI_MODE_3;
	spi->chip_select = 0;

	ts->spi = spi;
	mutex_init(&ts->rw_lock);
	ts->dev = &spi->dev;
	dev_set_drvdata(&spi->dev, ts);
	spi_set_drvdata(spi, ts);

	ts->initialized = false;
	ret = himax_chip_common_init();
	if (ret < 0)
		goto err_common_init_failed;

	return ret;

err_common_init_failed:
	kfree(ts);
err_alloc_data_failed:
	kfree(g_r_xfer_data);
	g_r_xfer_data = NULL;
err_alloc_g_r_xfer_data_failed:
	kfree(g_w_xfer_data);
	g_w_xfer_data = NULL;
err_alloc_g_w_xfer_data_failed:

	return ret;
}

int himax_chip_common_remove(struct spi_device *spi)
{
	struct himax_ts_data *ts = spi_get_drvdata(spi);

	if (ts->initialized)
		himax_chip_common_deinit();

	ts->spi = NULL;
	/* spin_unlock_irq(&ts->spi_lock); */
	spi_set_drvdata(spi, NULL);
	kfree(g_w_xfer_data);
	kfree(g_r_xfer_data);

	I("%s: completed.\n", __func__);

	return 0;
}

static const struct dev_pm_ops himax_common_pm_ops = {
#if (!defined(HX_CONFIG_FB)) && (!defined(HX_CONFIG_DRM))
	.suspend = himax_common_suspend,
	.resume  = himax_common_resume,
#endif
};

#if defined(CONFIG_OF)
static const struct of_device_id himax_match_table[] = {
	{.compatible = "himax,hxcommon" },
	{},
};
#else
#define himax_match_table NULL
#endif

static struct spi_driver himax_common_driver = {
	.driver = {
		.name =		HIMAX_common_NAME,
		.owner =	THIS_MODULE,
		.of_match_table = himax_match_table,
	},
	.probe =	himax_chip_common_probe,
	.remove =	himax_chip_common_remove,
};

static int __init himax_common_init(void)
{
	I("Himax common touch panel driver init\n");
	D("Himax check double loading\n");
	if (g_mmi_refcnt++ > 0) {
		I("Himax driver has been loaded! ignoring....\n");
		return 0;
	}
	spi_register_driver(&himax_common_driver);

	return 0;
}

static void __exit himax_common_exit(void)
{
#if !defined(KERNEL_VER_ABOVE_5_10)
	if (spi) {
		spi_unregister_device(spi);
		spi = NULL;
	}
#endif
	spi_unregister_driver(&himax_common_driver);
}

late_initcall(himax_common_init);
module_exit(himax_common_exit);

MODULE_DESCRIPTION("Himax_common driver");
MODULE_LICENSE("GPL");