Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2020, The Linux Foundation. All rights reserved. |
| 3 | * |
| 4 | * This program is free software; you can redistribute it and/or modify |
| 5 | * it under the terms of the GNU General Public License version 2 and |
| 6 | * only version 2 as published by the Free Software Foundation. |
| 7 | * |
| 8 | * This program is distributed in the hope that it will be useful, |
| 9 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 10 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 11 | * GNU General Public License for more details. |
| 12 | * |
| 13 | */ |
| 14 | |
| 15 | #include <linux/device.h> |
| 16 | #include <linux/i2c.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/platform_device.h> |
| 19 | #include <linux/input.h> |
| 20 | #include <linux/types.h> |
| 21 | #include <linux/module.h> |
| 22 | #include <linux/fs.h> |
| 23 | #include <linux/of.h> |
| 24 | #include <linux/of_graph.h> |
| 25 | #include <linux/kernel.h> |
| 26 | #include <linux/of_gpio.h> |
| 27 | #include <linux/gpio.h> |
| 28 | #include <linux/delay.h> |
| 29 | #include <linux/regulator/consumer.h> |
| 30 | #include <linux/rwlock.h> |
| 31 | #include <linux/leds.h> |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 32 | #include "vxr7200.h" |
| 33 | |
| 34 | enum power_state { |
| 35 | POWER_STATE_POWERKEY = 0, |
| 36 | POWER_STATE_ENABLE = 1, |
| 37 | }; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 38 | |
| 39 | struct vxr7200 { |
| 40 | struct device *dev; |
| 41 | struct device_node *host_node; |
| 42 | |
| 43 | u8 i2c_addr; |
| 44 | int irq; |
| 45 | u32 vxr_3v3_en; |
| 46 | u32 led_5v_en; |
| 47 | u32 led_drive_en1; |
| 48 | u32 led_drive_en2; |
| 49 | u32 display_1v8_en; |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 50 | u32 mipi_switch_1v8_en; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 51 | u32 display_res1; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 52 | |
| 53 | struct i2c_client *i2c_client; |
| 54 | |
| 55 | struct regulator *vddio; |
| 56 | struct regulator *lab; |
| 57 | struct regulator *ibb; |
| 58 | |
| 59 | bool power_on; |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 60 | bool enable; |
| 61 | bool usb_plugged; |
| 62 | enum power_state state; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 63 | }; |
| 64 | |
Rajesh Bharathwaj | 9cd60e0 | 2020-03-24 18:04:14 -0700 | [diff] [blame] | 65 | static bool dsi_way; |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 66 | static struct vxr7200 *pdata; |
Rajesh Bharathwaj | 9cd60e0 | 2020-03-24 18:04:14 -0700 | [diff] [blame] | 67 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 68 | static int vxr7200_read(struct vxr7200 *pdata, u8 *reg, u8 *buf, u32 size) |
| 69 | { |
| 70 | struct i2c_client *client = pdata->i2c_client; |
| 71 | struct i2c_msg msg[2] = { |
| 72 | { |
| 73 | .addr = client->addr, |
| 74 | .flags = 0, |
| 75 | .len = 4, |
| 76 | .buf = reg, |
| 77 | }, |
| 78 | { |
| 79 | .addr = client->addr, |
| 80 | .flags = I2C_M_RD, |
| 81 | .len = size, |
| 82 | .buf = buf, |
| 83 | } |
| 84 | }; |
| 85 | |
| 86 | if (i2c_transfer(client->adapter, msg, 2) != 2) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 87 | pr_err("%s i2c read failed\n", __func__); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 88 | return -EIO; |
| 89 | } |
| 90 | |
| 91 | return 0; |
| 92 | } |
| 93 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 94 | static void turn_gpio(struct vxr7200 *pdata, int gpio, bool on) |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 95 | { |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 96 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 97 | pr_debug("%s vxr7200_turn_gpio gpio:%d, on:%d\n", __func__, gpio, on); |
| 98 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 99 | if (on) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 100 | gpio_direction_output(gpio, 0); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 101 | gpio_set_value(gpio, 1); |
| 102 | pr_debug("%s vxr7200 gpio:%d set to high\n", __func__, gpio); |
| 103 | } else { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 104 | gpio_direction_output(gpio, 1); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 105 | gpio_set_value(gpio, 0); |
| 106 | pr_debug("%s vxr7200 gpio:%d set to low\n", __func__, gpio); |
| 107 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 108 | } |
| 109 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 110 | static void vxr7200_set_gpios(struct vxr7200 *pdata, bool turn_on) |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 111 | { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 112 | pr_debug("%s, turn_on:%d\n", __func__, turn_on); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 113 | if (pdata) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 114 | if (pdata->state == POWER_STATE_POWERKEY) { |
| 115 | turn_gpio(pdata, pdata->vxr_3v3_en, turn_on); |
| 116 | turn_gpio(pdata, pdata->display_res1, turn_on); |
| 117 | turn_gpio(pdata, pdata->display_1v8_en, turn_on); |
| 118 | turn_gpio(pdata, pdata->mipi_switch_1v8_en, turn_on); |
| 119 | if (!pdata->enable && turn_on) |
| 120 | return; |
| 121 | } |
| 122 | turn_gpio(pdata, pdata->led_5v_en, turn_on); |
| 123 | turn_gpio(pdata, pdata->led_drive_en1, turn_on); |
| 124 | turn_gpio(pdata, pdata->led_drive_en2, turn_on); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 125 | } |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 126 | return; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 127 | } |
| 128 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 129 | static ssize_t vxr7200_enable_show(struct device *dev, |
| 130 | struct device_attribute *attr, |
| 131 | char *buf) |
| 132 | { |
| 133 | int ret; |
| 134 | struct i2c_client *client = to_i2c_client(dev); |
| 135 | struct vxr7200 *pdata = i2c_get_clientdata(client); |
| 136 | |
| 137 | |
| 138 | if (pdata->enable) |
| 139 | ret = scnprintf(buf, PAGE_SIZE, "display on\n"); |
| 140 | else |
| 141 | ret = scnprintf(buf, PAGE_SIZE, "display off\n"); |
| 142 | |
| 143 | return ret; |
| 144 | } |
| 145 | |
| 146 | static ssize_t vxr7200_enable_store(struct device *dev, |
| 147 | struct device_attribute *attr, |
| 148 | const char *buf, size_t count) |
| 149 | { |
| 150 | struct i2c_client *client = to_i2c_client(dev); |
| 151 | struct vxr7200 *pdata = i2c_get_clientdata(client); |
| 152 | long val; |
| 153 | int ret; |
| 154 | |
| 155 | ret = kstrtol(buf, 0, &val); |
| 156 | pr_debug("%s, count:%d val:%lx, buf:%s\n", |
| 157 | __func__, (int)count, val, buf); |
| 158 | |
| 159 | if (val == 0x1) { |
| 160 | pr_debug("%s Turning on Display\n", __func__); |
| 161 | pdata->enable = true; |
| 162 | pdata->state = POWER_STATE_ENABLE; |
| 163 | vxr7200_set_gpios(pdata, true); |
| 164 | } else if (val == 0x0) { |
| 165 | pr_debug("%s Turning off Display\n", |
| 166 | __func__); |
| 167 | pdata->state = POWER_STATE_ENABLE; |
| 168 | pdata->enable = false; |
| 169 | vxr7200_set_gpios(pdata, false); |
| 170 | } else |
| 171 | pr_err("%s Invalid value. Valid vals(1-on,0-off)\n", |
| 172 | __func__); |
| 173 | |
| 174 | return count; |
| 175 | } |
| 176 | |
| 177 | static DEVICE_ATTR_RW(vxr7200_enable); |
| 178 | |
| 179 | static struct attribute *vxr7200_fs_attrs[] = { |
| 180 | &dev_attr_vxr7200_enable.attr, |
| 181 | NULL |
| 182 | }; |
| 183 | |
| 184 | static struct attribute_group vxr7200_fs_attr_group = { |
| 185 | .attrs = vxr7200_fs_attrs, |
| 186 | }; |
| 187 | |
| 188 | void vxr7200_usb_event(bool cable_plug) |
| 189 | { |
| 190 | pr_debug("%s, cable_plug:%d\n", __func__, cable_plug); |
| 191 | if (pdata) { |
| 192 | pdata->state = POWER_STATE_POWERKEY; |
| 193 | if (cable_plug) { |
| 194 | pdata->usb_plugged = true; |
| 195 | vxr7200_set_gpios(pdata, true); |
| 196 | } else { |
| 197 | pdata->usb_plugged = false; |
| 198 | vxr7200_set_gpios(pdata, false); |
| 199 | } |
| 200 | } |
| 201 | } |
| 202 | EXPORT_SYMBOL(vxr7200_usb_event); |
| 203 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 204 | static int vxr7200_parse_dt(struct device *dev, |
| 205 | struct vxr7200 *pdata) |
| 206 | { |
| 207 | struct device_node *np = dev->of_node; |
| 208 | int rc = 0; |
| 209 | |
| 210 | pdata->vxr_3v3_en = |
| 211 | of_get_named_gpio(np, "qcom,vxr_3v3_en", 0); |
| 212 | if (!gpio_is_valid(pdata->vxr_3v3_en)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 213 | pr_err("vxr7200_3v3_en gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 214 | rc = -EINVAL; |
| 215 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 216 | if (gpio_request(pdata->vxr_3v3_en, "vxr_3v3_en")) { |
| 217 | pr_err("vxr7200_3v3_en request gpio failed\n"); |
| 218 | rc = -EINVAL; |
| 219 | goto gpio1Fail; |
| 220 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 221 | |
| 222 | pdata->led_5v_en = |
| 223 | of_get_named_gpio(np, "qcom,led-5v-en-gpio", 0); |
| 224 | if (!gpio_is_valid(pdata->led_5v_en)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 225 | pr_err("vxr7200_led_5v_en gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 226 | rc = -EINVAL; |
| 227 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 228 | if (gpio_request(pdata->led_5v_en, "led_5v_en")) { |
| 229 | pr_err("vxr7200_led_5v_en request gpio failed\n"); |
| 230 | rc = -EINVAL; |
| 231 | goto gpio2Fail; |
| 232 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 233 | |
| 234 | pdata->led_drive_en1 = |
| 235 | of_get_named_gpio(np, "qcom,led-driver-en1-gpio", 0); |
| 236 | if (!gpio_is_valid(pdata->led_drive_en1)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 237 | pr_err("vxr7200_led_drive_en1 gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 238 | rc = -EINVAL; |
| 239 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 240 | if (gpio_request(pdata->led_drive_en1, "led_drive_en1")) { |
| 241 | pr_err("vxr7200_led_drive_en1 request gpio failed\n"); |
| 242 | rc = -EINVAL; |
| 243 | goto gpio3Fail; |
| 244 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 245 | |
| 246 | pdata->led_drive_en2 = |
| 247 | of_get_named_gpio(np, "qcom,led-driver-en2-gpio", 0); |
| 248 | if (!gpio_is_valid(pdata->led_drive_en2)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 249 | pr_err("vxr7200_led_drive_en2 gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 250 | rc = -EINVAL; |
| 251 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 252 | if (gpio_request(pdata->led_drive_en2, "led_drive_en2")) { |
| 253 | pr_err("vxr7200_led_drive_en2 request gpio failed\n"); |
| 254 | rc = -EINVAL; |
| 255 | goto gpio4Fail; |
| 256 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 257 | |
| 258 | pdata->display_1v8_en = |
| 259 | of_get_named_gpio(np, "qcom,1p8-en-gpio", 0); |
| 260 | if (!gpio_is_valid(pdata->display_1v8_en)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 261 | pr_err("vxr7200_display_1v8_en gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 262 | rc = -EINVAL; |
| 263 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 264 | if (gpio_request(pdata->display_1v8_en, "display_1v8_en")) { |
| 265 | pr_err("vxr7200_display_1v8_en request gpio failed\n"); |
| 266 | rc = -EINVAL; |
| 267 | goto gpio5Fail; |
| 268 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 269 | |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 270 | pdata->mipi_switch_1v8_en = |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 271 | of_get_named_gpio(np, "qcom,switch-power-gpio", 0); |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 272 | if (!gpio_is_valid(pdata->mipi_switch_1v8_en)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 273 | pr_err("vxr7200_mipi_switch_1v8_en gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 274 | rc = -EINVAL; |
| 275 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 276 | if (gpio_request(pdata->mipi_switch_1v8_en, "mipi_switch_1v8_en")) { |
| 277 | pr_err("vxr7200_mipi_switch_1v8_en request gpio failed\n"); |
| 278 | rc = -EINVAL; |
| 279 | goto gpio6Fail; |
| 280 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 281 | |
| 282 | pdata->display_res1 = |
| 283 | of_get_named_gpio(np, "qcom,platform-reset-gpio", 0); |
| 284 | if (!gpio_is_valid(pdata->display_res1)) { |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 285 | pr_err("vxr7200_display_res1 gpio not specified\n"); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 286 | rc = -EINVAL; |
| 287 | } |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 288 | if (gpio_request(pdata->display_res1, "display_res1")) { |
| 289 | pr_err("vxr7200_display_res1 request gpio failed\n"); |
| 290 | rc = -EINVAL; |
| 291 | goto gpio7Fail; |
| 292 | } |
| 293 | return rc; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 294 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 295 | gpio7Fail: |
| 296 | gpio_free(pdata->display_res1); |
| 297 | gpio6Fail: |
| 298 | gpio_free(pdata->mipi_switch_1v8_en); |
| 299 | gpio5Fail: |
| 300 | gpio_free(pdata->display_1v8_en); |
| 301 | gpio4Fail: |
| 302 | gpio_free(pdata->led_drive_en2); |
| 303 | gpio3Fail: |
| 304 | gpio_free(pdata->led_drive_en1); |
| 305 | gpio2Fail: |
| 306 | gpio_free(pdata->led_5v_en); |
| 307 | gpio1Fail: |
| 308 | gpio_free(pdata->vxr_3v3_en); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 309 | |
| 310 | return rc; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | static void vxr7200_display_pwr_enable_vregs(struct vxr7200 *pdata) |
| 314 | { |
| 315 | int rc = 0; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 316 | pdata->vddio = devm_regulator_get(pdata->dev, "pm660_l11"); |
| 317 | rc = PTR_RET(pdata->vddio); |
| 318 | if (rc) { |
| 319 | pr_err("Failed to get pm660_l11 regulator %s\n", __func__); |
| 320 | goto vddio_fail; |
| 321 | } |
| 322 | rc = regulator_set_load(pdata->vddio, 62000); |
| 323 | if (rc < 0) { |
| 324 | pr_err("Load setting failed for vddio %s\n", __func__); |
| 325 | goto vddio_fail; |
| 326 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 327 | rc = regulator_enable(pdata->vddio); |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 328 | msleep(20); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 329 | if (rc) { |
| 330 | pr_err("enable failed for vddio, rc=%d %s\n", rc, __func__); |
| 331 | goto vddio_fail; |
| 332 | } |
| 333 | |
| 334 | pdata->lab = devm_regulator_get(pdata->dev, "lcdb_ldo"); |
| 335 | rc = PTR_RET(pdata->lab); |
| 336 | if (rc) { |
| 337 | pr_err("Failed to get lcdb_ldo_vreg regulator %s\n", __func__); |
| 338 | goto lab_fail; |
| 339 | } |
| 340 | rc = regulator_set_load(pdata->lab, 100000); |
| 341 | if (rc < 0) { |
| 342 | pr_err("Load Setting failed for lab %s\n", __func__); |
| 343 | goto lab_fail; |
| 344 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 345 | rc = regulator_enable(pdata->lab); |
| 346 | if (rc) { |
| 347 | pr_err("enable failed for lab, rc=%d %s\n", rc, __func__); |
| 348 | goto lab_fail; |
| 349 | } |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 350 | msleep(20); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 351 | |
| 352 | pdata->ibb = devm_regulator_get(pdata->dev, "lcdb_ncp"); |
| 353 | rc = PTR_RET(pdata->ibb); |
| 354 | if (rc) { |
| 355 | pr_err("Failed to get lcdb_ncp_vreg regulator %s\n", __func__); |
| 356 | goto ibb_fail; |
| 357 | } |
| 358 | rc = regulator_set_load(pdata->ibb, 100000); |
| 359 | if (rc < 0) { |
| 360 | pr_err("Load Setting failed for ibb %s\n", __func__); |
| 361 | goto ibb_fail; |
| 362 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 363 | rc = regulator_enable(pdata->ibb); |
| 364 | if (rc) { |
| 365 | pr_err("enable failed for ibb, rc=%d %s\n", rc, __func__); |
| 366 | goto ibb_fail; |
| 367 | } |
Rajesh Bharathwaj | 60ae8e4 | 2020-04-14 15:26:03 -0700 | [diff] [blame] | 368 | msleep(20); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 369 | |
| 370 | return; |
| 371 | |
| 372 | ibb_fail: |
| 373 | devm_regulator_put(pdata->ibb); |
| 374 | (void)regulator_set_load(pdata->ibb, 100); |
| 375 | (void)regulator_set_voltage(pdata->ibb, 0, 6000000); |
| 376 | |
| 377 | lab_fail: |
| 378 | (void)regulator_set_voltage(pdata->lab, 0, 6000000); |
| 379 | (void)regulator_set_load(pdata->lab, 100); |
| 380 | devm_regulator_put(pdata->lab); |
| 381 | |
| 382 | vddio_fail: |
| 383 | (void)regulator_set_load(pdata->vddio, 100); |
| 384 | (void)regulator_set_voltage(pdata->vddio, 0, 1800000); |
| 385 | devm_regulator_put(pdata->vddio); |
| 386 | } |
| 387 | |
Rajesh Bharathwaj | 9cd60e0 | 2020-03-24 18:04:14 -0700 | [diff] [blame] | 388 | static int vxr7200_probe(struct i2c_client *client, |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 389 | const struct i2c_device_id *id) |
| 390 | { |
| 391 | int rc; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 392 | u8 reg[4] = {0x00, 0x20, 0x01, 0x60}; |
| 393 | u8 buf[4] = {0x00, 0x0, 0x0, 0x0}; |
| 394 | |
| 395 | if (!client || !client->dev.of_node) { |
| 396 | pr_err("%s invalid input\n", __func__); |
| 397 | return -EINVAL; |
| 398 | } |
| 399 | |
| 400 | if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) { |
| 401 | pr_err("%s device doesn't support I2C\n", __func__); |
| 402 | return -ENODEV; |
| 403 | } |
| 404 | |
Rajesh Bharathwaj | 9cd60e0 | 2020-03-24 18:04:14 -0700 | [diff] [blame] | 405 | if (dsi_way) |
| 406 | return -EINVAL; |
| 407 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 408 | pdata = devm_kzalloc(&client->dev, |
| 409 | sizeof(struct vxr7200), GFP_KERNEL); |
| 410 | if (!pdata) |
| 411 | return -ENOMEM; |
| 412 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 413 | pdata->state = POWER_STATE_POWERKEY; |
| 414 | pdata->enable = true; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 415 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 416 | rc = vxr7200_parse_dt(&client->dev, pdata); |
| 417 | if (rc) { |
| 418 | pr_err("%s failed to parse device tree\n", __func__); |
| 419 | goto err_dt_parse; |
| 420 | } |
| 421 | pdata->dev = &client->dev; |
| 422 | pdata->i2c_client = client; |
| 423 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 424 | rc = sysfs_create_group(&pdata->dev->kobj, &vxr7200_fs_attr_group); |
| 425 | if (rc) { |
| 426 | pr_err("%s unable to register vxr7200 sysfs nodes\n", |
| 427 | __func__); |
| 428 | goto err_dt_parse; |
| 429 | } |
| 430 | |
| 431 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 432 | vxr7200_display_pwr_enable_vregs(pdata); |
| 433 | |
| 434 | i2c_set_clientdata(client, pdata); |
| 435 | dev_set_drvdata(&client->dev, pdata); |
| 436 | |
| 437 | //vxr7200_write(pdata, 0x0A, 0x02);//Enable 4-lane DP |
| 438 | vxr7200_read(pdata, reg, buf, 4);//Enable 4-lane DP |
| 439 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 440 | return rc; |
| 441 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 442 | err_dt_parse: |
| 443 | devm_kfree(&client->dev, pdata); |
| 444 | |
| 445 | return rc; |
| 446 | } |
| 447 | |
| 448 | static int vxr7200_remove(struct i2c_client *client) |
| 449 | { |
| 450 | struct vxr7200 *pdata = i2c_get_clientdata(client); |
| 451 | |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 452 | if (pdata) { |
| 453 | sysfs_remove_group(&pdata->dev->kobj, &vxr7200_fs_attr_group); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 454 | devm_kfree(&client->dev, pdata); |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 455 | } |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 456 | return 0; |
| 457 | } |
| 458 | |
| 459 | |
| 460 | static void vxr7200_shutdown(struct i2c_client *client) |
| 461 | { |
| 462 | dev_info(&(client->dev), "shutdown"); |
| 463 | } |
| 464 | |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 465 | static int vxr7200_pm_suspend(struct device *dev) |
| 466 | { |
| 467 | struct i2c_client *client = to_i2c_client(dev); |
| 468 | struct vxr7200 *pdata = i2c_get_clientdata(client); |
| 469 | |
| 470 | dev_info(dev, "suspend"); |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 471 | pdata->state = POWER_STATE_POWERKEY; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 472 | vxr7200_set_gpios(pdata, false); |
| 473 | return 0; |
| 474 | } |
| 475 | |
| 476 | static int vxr7200_pm_resume(struct device *dev) |
| 477 | { |
| 478 | struct i2c_client *client = to_i2c_client(dev); |
| 479 | struct vxr7200 *pdata = i2c_get_clientdata(client); |
| 480 | |
| 481 | dev_info(dev, "resume"); |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 482 | pdata->state = POWER_STATE_POWERKEY; |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 483 | vxr7200_set_gpios(pdata, true); |
| 484 | return 0; |
| 485 | } |
| 486 | |
| 487 | static const struct dev_pm_ops vxr7200_dev_pm_ops = { |
| 488 | .suspend = vxr7200_pm_suspend, |
| 489 | .resume = vxr7200_pm_resume, |
Rajesh Bharathwaj | 244c9ad | 2020-06-15 13:11:22 -0700 | [diff] [blame] | 490 | .poweroff = vxr7200_pm_suspend, |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 491 | }; |
| 492 | |
| 493 | static const struct i2c_device_id vxr7200_id_table[] = { |
| 494 | {"vxr7200", 0}, |
| 495 | {} |
| 496 | }; |
| 497 | |
| 498 | static struct i2c_driver vxr7200_i2c_driver = { |
| 499 | .probe = vxr7200_probe, |
| 500 | .remove = vxr7200_remove, |
| 501 | .shutdown = vxr7200_shutdown, |
| 502 | .driver = { |
| 503 | .name = "vxr7200", |
| 504 | .owner = THIS_MODULE, |
| 505 | .pm = &vxr7200_dev_pm_ops, |
| 506 | }, |
| 507 | .id_table = vxr7200_id_table, |
| 508 | }; |
Rajesh Bharathwaj | 9cd60e0 | 2020-03-24 18:04:14 -0700 | [diff] [blame] | 509 | |
| 510 | static int __init vxr7200_init(void) |
| 511 | { |
| 512 | char *cmdline; |
| 513 | |
| 514 | cmdline = strnstr(boot_command_line, |
| 515 | "msm_drm.dsi_display0=dsi_sim_vid_display", |
| 516 | strlen(boot_command_line)); |
| 517 | if (cmdline) { |
| 518 | pr_debug("%s DSI SIM mode, going to dp init cmdline:%s\n", |
| 519 | __func__, cmdline); |
| 520 | dsi_way = false; |
| 521 | } else { |
| 522 | pr_debug("%s DSI WAY, going to dsi init cmdline:%s\n", |
| 523 | __func__, cmdline); |
| 524 | dsi_way = true; |
| 525 | } |
| 526 | |
| 527 | return 0; |
| 528 | |
| 529 | } |
| 530 | |
| 531 | device_initcall(vxr7200_init); |
Rajesh Bharathwaj | dcc7af8 | 2019-12-15 22:42:55 -0800 | [diff] [blame] | 532 | module_i2c_driver(vxr7200_i2c_driver); |
| 533 | MODULE_DEVICE_TABLE(i2c, vxr7200_id_table); |
| 534 | MODULE_DESCRIPTION("VXR7200 DP2DSI Bridge"); |