Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (C) 2013 Red Hat |
| 3 | * Author: Rob Clark <robdclark@gmail.com> |
| 4 | * |
| 5 | * This program is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 as published by |
| 7 | * the Free Software Foundation. |
| 8 | * |
| 9 | * This program is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for |
| 12 | * more details. |
| 13 | * |
| 14 | * You should have received a copy of the GNU General Public License along with |
| 15 | * this program. If not, see <http://www.gnu.org/licenses/>. |
| 16 | */ |
| 17 | |
| 18 | #include <linux/gpio.h> |
Stephane Viau | 865807d | 2015-06-04 17:31:42 -0400 | [diff] [blame] | 19 | #include <linux/pinctrl/consumer.h> |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 20 | |
Rob Clark | dd2da6e | 2013-11-30 16:12:10 -0500 | [diff] [blame] | 21 | #include "msm_kms.h" |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 22 | #include "hdmi.h" |
| 23 | |
| 24 | struct hdmi_connector { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 25 | struct drm_connector base; |
| 26 | struct hdmi *hdmi; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 27 | struct work_struct hpd_work; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 28 | }; |
| 29 | #define to_hdmi_connector(x) container_of(x, struct hdmi_connector, base) |
| 30 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 31 | static void msm_hdmi_phy_reset(struct hdmi *hdmi) |
Stephane Viau | da32855 | 2015-06-19 16:04:46 -0400 | [diff] [blame] | 32 | { |
| 33 | unsigned int val; |
| 34 | |
| 35 | val = hdmi_read(hdmi, REG_HDMI_PHY_CTRL); |
| 36 | |
| 37 | if (val & HDMI_PHY_CTRL_SW_RESET_LOW) { |
| 38 | /* pull low */ |
| 39 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 40 | val & ~HDMI_PHY_CTRL_SW_RESET); |
| 41 | } else { |
| 42 | /* pull high */ |
| 43 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 44 | val | HDMI_PHY_CTRL_SW_RESET); |
| 45 | } |
| 46 | |
| 47 | if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) { |
| 48 | /* pull low */ |
| 49 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 50 | val & ~HDMI_PHY_CTRL_SW_RESET_PLL); |
| 51 | } else { |
| 52 | /* pull high */ |
| 53 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 54 | val | HDMI_PHY_CTRL_SW_RESET_PLL); |
| 55 | } |
| 56 | |
| 57 | msleep(100); |
| 58 | |
| 59 | if (val & HDMI_PHY_CTRL_SW_RESET_LOW) { |
| 60 | /* pull high */ |
| 61 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 62 | val | HDMI_PHY_CTRL_SW_RESET); |
| 63 | } else { |
| 64 | /* pull low */ |
| 65 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 66 | val & ~HDMI_PHY_CTRL_SW_RESET); |
| 67 | } |
| 68 | |
| 69 | if (val & HDMI_PHY_CTRL_SW_RESET_PLL_LOW) { |
| 70 | /* pull high */ |
| 71 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 72 | val | HDMI_PHY_CTRL_SW_RESET_PLL); |
| 73 | } else { |
| 74 | /* pull low */ |
| 75 | hdmi_write(hdmi, REG_HDMI_PHY_CTRL, |
| 76 | val & ~HDMI_PHY_CTRL_SW_RESET_PLL); |
| 77 | } |
| 78 | } |
| 79 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 80 | static int gpio_config(struct hdmi *hdmi, bool on) |
| 81 | { |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 82 | struct device *dev = &hdmi->pdev->dev; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 83 | const struct hdmi_platform_config *config = hdmi->config; |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 84 | int ret, i; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 85 | |
| 86 | if (on) { |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 87 | for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) { |
| 88 | struct hdmi_gpio_data gpio = config->gpios[i]; |
| 89 | |
| 90 | if (gpio.num != -1) { |
| 91 | ret = gpio_request(gpio.num, gpio.label); |
| 92 | if (ret) { |
| 93 | dev_err(dev, |
| 94 | "'%s'(%d) gpio_request failed: %d\n", |
| 95 | gpio.label, gpio.num, ret); |
| 96 | goto err; |
| 97 | } |
| 98 | |
| 99 | if (gpio.output) { |
| 100 | gpio_direction_output(gpio.num, |
| 101 | gpio.value); |
| 102 | } else { |
| 103 | gpio_direction_input(gpio.num); |
| 104 | gpio_set_value_cansleep(gpio.num, |
| 105 | gpio.value); |
| 106 | } |
Stephane Viau | 3a84f84 | 2015-06-19 16:04:47 -0400 | [diff] [blame] | 107 | } |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 108 | } |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 109 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 110 | DBG("gpio on"); |
| 111 | } else { |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 112 | for (i = 0; i < HDMI_MAX_NUM_GPIO; i++) { |
| 113 | struct hdmi_gpio_data gpio = config->gpios[i]; |
Stephane Viau | 3a84f84 | 2015-06-19 16:04:47 -0400 | [diff] [blame] | 114 | |
Archit Taneja | c899f93 | 2016-05-02 11:05:52 +0530 | [diff] [blame] | 115 | if (gpio.num == -1) |
| 116 | continue; |
| 117 | |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 118 | if (gpio.output) { |
| 119 | int value = gpio.value ? 0 : 1; |
Stephane Viau | 3a84f84 | 2015-06-19 16:04:47 -0400 | [diff] [blame] | 120 | |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 121 | gpio_set_value_cansleep(gpio.num, value); |
| 122 | } |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 123 | |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 124 | gpio_free(gpio.num); |
| 125 | }; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 126 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 127 | DBG("gpio off"); |
| 128 | } |
| 129 | |
| 130 | return 0; |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 131 | err: |
Archit Taneja | c899f93 | 2016-05-02 11:05:52 +0530 | [diff] [blame] | 132 | while (i--) { |
| 133 | if (config->gpios[i].num != -1) |
| 134 | gpio_free(config->gpios[i].num); |
| 135 | } |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 136 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 137 | return ret; |
| 138 | } |
| 139 | |
| 140 | static int hpd_enable(struct hdmi_connector *hdmi_connector) |
| 141 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 142 | struct hdmi *hdmi = hdmi_connector->hdmi; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 143 | const struct hdmi_platform_config *config = hdmi->config; |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 144 | struct device *dev = &hdmi->pdev->dev; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 145 | uint32_t hpd_ctrl; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 146 | int i, ret; |
jilai wang | c6a57a5 | 2015-04-02 17:49:01 -0400 | [diff] [blame] | 147 | unsigned long flags; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 148 | |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 149 | for (i = 0; i < config->hpd_reg_cnt; i++) { |
| 150 | ret = regulator_enable(hdmi->hpd_regs[i]); |
| 151 | if (ret) { |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 152 | dev_err(dev, "failed to enable hpd regulator: %s (%d)\n", |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 153 | config->hpd_reg_names[i], ret); |
| 154 | goto fail; |
| 155 | } |
| 156 | } |
| 157 | |
Stephane Viau | 865807d | 2015-06-04 17:31:42 -0400 | [diff] [blame] | 158 | ret = pinctrl_pm_select_default_state(dev); |
| 159 | if (ret) { |
| 160 | dev_err(dev, "pinctrl state chg failed: %d\n", ret); |
| 161 | goto fail; |
| 162 | } |
| 163 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 164 | ret = gpio_config(hdmi, true); |
| 165 | if (ret) { |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 166 | dev_err(dev, "failed to configure GPIOs: %d\n", ret); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 167 | goto fail; |
| 168 | } |
| 169 | |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 170 | for (i = 0; i < config->hpd_clk_cnt; i++) { |
Stephane Viau | b77f47e | 2014-06-06 10:03:32 -0400 | [diff] [blame] | 171 | if (config->hpd_freq && config->hpd_freq[i]) { |
| 172 | ret = clk_set_rate(hdmi->hpd_clks[i], |
| 173 | config->hpd_freq[i]); |
| 174 | if (ret) |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 175 | dev_warn(dev, "failed to set clk %s (%d)\n", |
Stephane Viau | b77f47e | 2014-06-06 10:03:32 -0400 | [diff] [blame] | 176 | config->hpd_clk_names[i], ret); |
| 177 | } |
| 178 | |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 179 | ret = clk_prepare_enable(hdmi->hpd_clks[i]); |
| 180 | if (ret) { |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 181 | dev_err(dev, "failed to enable hpd clk: %s (%d)\n", |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 182 | config->hpd_clk_names[i], ret); |
| 183 | goto fail; |
| 184 | } |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 185 | } |
| 186 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 187 | msm_hdmi_set_mode(hdmi, false); |
| 188 | msm_hdmi_phy_reset(hdmi); |
| 189 | msm_hdmi_set_mode(hdmi, true); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 190 | |
| 191 | hdmi_write(hdmi, REG_HDMI_USEC_REFTIMER, 0x0001001b); |
| 192 | |
| 193 | /* enable HPD events: */ |
| 194 | hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, |
| 195 | HDMI_HPD_INT_CTRL_INT_CONNECT | |
| 196 | HDMI_HPD_INT_CTRL_INT_EN); |
| 197 | |
| 198 | /* set timeout to 4.1ms (max) for hardware debounce */ |
jilai wang | c6a57a5 | 2015-04-02 17:49:01 -0400 | [diff] [blame] | 199 | spin_lock_irqsave(&hdmi->reg_lock, flags); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 200 | hpd_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_CTRL); |
| 201 | hpd_ctrl |= HDMI_HPD_CTRL_TIMEOUT(0x1fff); |
| 202 | |
| 203 | /* Toggle HPD circuit to trigger HPD sense */ |
| 204 | hdmi_write(hdmi, REG_HDMI_HPD_CTRL, |
| 205 | ~HDMI_HPD_CTRL_ENABLE & hpd_ctrl); |
| 206 | hdmi_write(hdmi, REG_HDMI_HPD_CTRL, |
| 207 | HDMI_HPD_CTRL_ENABLE | hpd_ctrl); |
jilai wang | c6a57a5 | 2015-04-02 17:49:01 -0400 | [diff] [blame] | 208 | spin_unlock_irqrestore(&hdmi->reg_lock, flags); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 209 | |
| 210 | return 0; |
| 211 | |
| 212 | fail: |
| 213 | return ret; |
| 214 | } |
| 215 | |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 216 | static void hdp_disable(struct hdmi_connector *hdmi_connector) |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 217 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 218 | struct hdmi *hdmi = hdmi_connector->hdmi; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 219 | const struct hdmi_platform_config *config = hdmi->config; |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 220 | struct device *dev = &hdmi->pdev->dev; |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 221 | int i, ret = 0; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 222 | |
| 223 | /* Disable HPD interrupt */ |
| 224 | hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, 0); |
| 225 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 226 | msm_hdmi_set_mode(hdmi, false); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 227 | |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 228 | for (i = 0; i < config->hpd_clk_cnt; i++) |
| 229 | clk_disable_unprepare(hdmi->hpd_clks[i]); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 230 | |
| 231 | ret = gpio_config(hdmi, false); |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 232 | if (ret) |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 233 | dev_warn(dev, "failed to unconfigure GPIOs: %d\n", ret); |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 234 | |
Stephane Viau | 865807d | 2015-06-04 17:31:42 -0400 | [diff] [blame] | 235 | ret = pinctrl_pm_select_sleep_state(dev); |
| 236 | if (ret) |
| 237 | dev_warn(dev, "pinctrl state chg failed: %d\n", ret); |
| 238 | |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 239 | for (i = 0; i < config->hpd_reg_cnt; i++) { |
| 240 | ret = regulator_disable(hdmi->hpd_regs[i]); |
| 241 | if (ret) |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 242 | dev_warn(dev, "failed to disable hpd regulator: %s (%d)\n", |
Jilai Wang | e6d7a16 | 2014-12-01 15:10:37 -0500 | [diff] [blame] | 243 | config->hpd_reg_names[i], ret); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 244 | } |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 245 | } |
| 246 | |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 247 | static void |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 248 | msm_hdmi_hotplug_work(struct work_struct *work) |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 249 | { |
| 250 | struct hdmi_connector *hdmi_connector = |
| 251 | container_of(work, struct hdmi_connector, hpd_work); |
| 252 | struct drm_connector *connector = &hdmi_connector->base; |
| 253 | drm_helper_hpd_irq_event(connector->dev); |
| 254 | } |
| 255 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 256 | void msm_hdmi_connector_irq(struct drm_connector *connector) |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 257 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 258 | struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector); |
| 259 | struct hdmi *hdmi = hdmi_connector->hdmi; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 260 | uint32_t hpd_int_status, hpd_int_ctrl; |
| 261 | |
| 262 | /* Process HPD: */ |
| 263 | hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); |
| 264 | hpd_int_ctrl = hdmi_read(hdmi, REG_HDMI_HPD_INT_CTRL); |
| 265 | |
| 266 | if ((hpd_int_ctrl & HDMI_HPD_INT_CTRL_INT_EN) && |
| 267 | (hpd_int_status & HDMI_HPD_INT_STATUS_INT)) { |
| 268 | bool detected = !!(hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED); |
| 269 | |
Jilai Wang | ff2f974 | 2014-12-01 15:12:23 -0500 | [diff] [blame] | 270 | /* ack & disable (temporarily) HPD events: */ |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 271 | hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, |
Jilai Wang | ff2f974 | 2014-12-01 15:12:23 -0500 | [diff] [blame] | 272 | HDMI_HPD_INT_CTRL_INT_ACK); |
| 273 | |
| 274 | DBG("status=%04x, ctrl=%04x", hpd_int_status, hpd_int_ctrl); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 275 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 276 | /* detect disconnect if we are connected or visa versa: */ |
| 277 | hpd_int_ctrl = HDMI_HPD_INT_CTRL_INT_EN; |
| 278 | if (!detected) |
| 279 | hpd_int_ctrl |= HDMI_HPD_INT_CTRL_INT_CONNECT; |
| 280 | hdmi_write(hdmi, REG_HDMI_HPD_INT_CTRL, hpd_int_ctrl); |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 281 | |
jilai wang | c6a57a5 | 2015-04-02 17:49:01 -0400 | [diff] [blame] | 282 | queue_work(hdmi->workq, &hdmi_connector->hpd_work); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 283 | } |
| 284 | } |
| 285 | |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 286 | static enum drm_connector_status detect_reg(struct hdmi *hdmi) |
| 287 | { |
| 288 | uint32_t hpd_int_status = hdmi_read(hdmi, REG_HDMI_HPD_INT_STATUS); |
| 289 | return (hpd_int_status & HDMI_HPD_INT_STATUS_CABLE_DETECTED) ? |
| 290 | connector_status_connected : connector_status_disconnected; |
| 291 | } |
| 292 | |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 293 | #define HPD_GPIO_INDEX 2 |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 294 | static enum drm_connector_status detect_gpio(struct hdmi *hdmi) |
| 295 | { |
| 296 | const struct hdmi_platform_config *config = hdmi->config; |
Archit Taneja | dc50f782 | 2016-02-25 11:22:36 +0530 | [diff] [blame] | 297 | struct hdmi_gpio_data hpd_gpio = config->gpios[HPD_GPIO_INDEX]; |
| 298 | |
| 299 | return gpio_get_value(hpd_gpio.num) ? |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 300 | connector_status_connected : |
| 301 | connector_status_disconnected; |
| 302 | } |
| 303 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 304 | static enum drm_connector_status hdmi_connector_detect( |
| 305 | struct drm_connector *connector, bool force) |
| 306 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 307 | struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector); |
| 308 | struct hdmi *hdmi = hdmi_connector->hdmi; |
Archit Taneja | c95ea16 | 2016-02-25 11:22:37 +0530 | [diff] [blame] | 309 | const struct hdmi_platform_config *config = hdmi->config; |
| 310 | struct hdmi_gpio_data hpd_gpio = config->gpios[HPD_GPIO_INDEX]; |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 311 | enum drm_connector_status stat_gpio, stat_reg; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 312 | int retry = 20; |
| 313 | |
Archit Taneja | c95ea16 | 2016-02-25 11:22:37 +0530 | [diff] [blame] | 314 | /* |
| 315 | * some platforms may not have hpd gpio. Rely only on the status |
| 316 | * provided by REG_HDMI_HPD_INT_STATUS in this case. |
| 317 | */ |
| 318 | if (hpd_gpio.num == -1) |
| 319 | return detect_reg(hdmi); |
| 320 | |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 321 | do { |
| 322 | stat_gpio = detect_gpio(hdmi); |
| 323 | stat_reg = detect_reg(hdmi); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 324 | |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 325 | if (stat_gpio == stat_reg) |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 326 | break; |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 327 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 328 | mdelay(10); |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 329 | } while (--retry); |
| 330 | |
| 331 | /* the status we get from reading gpio seems to be more reliable, |
| 332 | * so trust that one the most if we didn't manage to get hdmi and |
| 333 | * gpio status to agree: |
| 334 | */ |
| 335 | if (stat_gpio != stat_reg) { |
| 336 | DBG("HDMI_HPD_INT_STATUS tells us: %d", stat_reg); |
| 337 | DBG("hpd gpio tells us: %d", stat_gpio); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 338 | } |
| 339 | |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 340 | return stat_gpio; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 341 | } |
| 342 | |
| 343 | static void hdmi_connector_destroy(struct drm_connector *connector) |
| 344 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 345 | struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 346 | |
| 347 | hdp_disable(hdmi_connector); |
| 348 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 349 | drm_connector_cleanup(connector); |
| 350 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 351 | kfree(hdmi_connector); |
| 352 | } |
| 353 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 354 | static int msm_hdmi_connector_get_modes(struct drm_connector *connector) |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 355 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 356 | struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector); |
| 357 | struct hdmi *hdmi = hdmi_connector->hdmi; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 358 | struct edid *edid; |
| 359 | uint32_t hdmi_ctrl; |
| 360 | int ret = 0; |
| 361 | |
| 362 | hdmi_ctrl = hdmi_read(hdmi, REG_HDMI_CTRL); |
| 363 | hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl | HDMI_CTRL_ENABLE); |
| 364 | |
| 365 | edid = drm_get_edid(connector, hdmi->i2c); |
| 366 | |
| 367 | hdmi_write(hdmi, REG_HDMI_CTRL, hdmi_ctrl); |
| 368 | |
jilai wang | c6a57a5 | 2015-04-02 17:49:01 -0400 | [diff] [blame] | 369 | hdmi->hdmi_mode = drm_detect_hdmi_monitor(edid); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 370 | drm_mode_connector_update_edid_property(connector, edid); |
| 371 | |
| 372 | if (edid) { |
| 373 | ret = drm_add_edid_modes(connector, edid); |
| 374 | kfree(edid); |
| 375 | } |
| 376 | |
| 377 | return ret; |
| 378 | } |
| 379 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 380 | static int msm_hdmi_connector_mode_valid(struct drm_connector *connector, |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 381 | struct drm_display_mode *mode) |
| 382 | { |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 383 | struct hdmi_connector *hdmi_connector = to_hdmi_connector(connector); |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 384 | struct hdmi *hdmi = hdmi_connector->hdmi; |
| 385 | const struct hdmi_platform_config *config = hdmi->config; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 386 | struct msm_drm_private *priv = connector->dev->dev_private; |
| 387 | struct msm_kms *kms = priv->kms; |
| 388 | long actual, requested; |
| 389 | |
| 390 | requested = 1000 * mode->clock; |
| 391 | actual = kms->funcs->round_pixclk(kms, |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 392 | requested, hdmi_connector->hdmi->encoder); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 393 | |
Rob Clark | dada25b | 2013-12-01 12:12:54 -0500 | [diff] [blame] | 394 | /* for mdp5/apq8074, we manage our own pixel clk (as opposed to |
| 395 | * mdp4/dtv stuff where pixel clk is assigned to mdp/encoder |
| 396 | * instead): |
| 397 | */ |
| 398 | if (config->pwr_clk_cnt > 0) |
| 399 | actual = clk_round_rate(hdmi->pwr_clks[0], actual); |
| 400 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 401 | DBG("requested=%ld, actual=%ld", requested, actual); |
| 402 | |
| 403 | if (actual != requested) |
| 404 | return MODE_CLOCK_RANGE; |
| 405 | |
| 406 | return 0; |
| 407 | } |
| 408 | |
| 409 | static const struct drm_connector_funcs hdmi_connector_funcs = { |
Rob Clark | 0b776d4 | 2015-01-30 17:04:45 -0500 | [diff] [blame] | 410 | .dpms = drm_atomic_helper_connector_dpms, |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 411 | .detect = hdmi_connector_detect, |
| 412 | .fill_modes = drm_helper_probe_single_connector_modes, |
| 413 | .destroy = hdmi_connector_destroy, |
Rob Clark | 3e7849e | 2014-11-08 13:23:07 -0500 | [diff] [blame] | 414 | .reset = drm_atomic_helper_connector_reset, |
| 415 | .atomic_duplicate_state = drm_atomic_helper_connector_duplicate_state, |
| 416 | .atomic_destroy_state = drm_atomic_helper_connector_destroy_state, |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 417 | }; |
| 418 | |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 419 | static const struct drm_connector_helper_funcs msm_hdmi_connector_helper_funcs = { |
| 420 | .get_modes = msm_hdmi_connector_get_modes, |
| 421 | .mode_valid = msm_hdmi_connector_mode_valid, |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 422 | }; |
| 423 | |
| 424 | /* initialize connector */ |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 425 | struct drm_connector *msm_hdmi_connector_init(struct hdmi *hdmi) |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 426 | { |
| 427 | struct drm_connector *connector = NULL; |
| 428 | struct hdmi_connector *hdmi_connector; |
| 429 | int ret; |
| 430 | |
| 431 | hdmi_connector = kzalloc(sizeof(*hdmi_connector), GFP_KERNEL); |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 432 | if (!hdmi_connector) |
| 433 | return ERR_PTR(-ENOMEM); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 434 | |
Rob Clark | d1a717b | 2014-11-18 08:40:44 -0500 | [diff] [blame] | 435 | hdmi_connector->hdmi = hdmi; |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 436 | INIT_WORK(&hdmi_connector->hpd_work, msm_hdmi_hotplug_work); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 437 | |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 438 | connector = &hdmi_connector->base; |
| 439 | |
| 440 | drm_connector_init(hdmi->dev, connector, &hdmi_connector_funcs, |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 441 | DRM_MODE_CONNECTOR_HDMIA); |
Arnd Bergmann | fcda50c | 2016-02-22 22:08:35 +0100 | [diff] [blame] | 442 | drm_connector_helper_add(connector, &msm_hdmi_connector_helper_funcs); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 443 | |
Rob Clark | 3189650 | 2014-05-19 13:53:20 -0400 | [diff] [blame] | 444 | connector->polled = DRM_CONNECTOR_POLL_CONNECT | |
| 445 | DRM_CONNECTOR_POLL_DISCONNECT; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 446 | |
Rob Clark | cddfaeb | 2015-01-14 11:16:32 -0500 | [diff] [blame] | 447 | connector->interlace_allowed = 0; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 448 | connector->doublescan_allowed = 0; |
| 449 | |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 450 | ret = hpd_enable(hdmi_connector); |
| 451 | if (ret) { |
Stephane Viau | 5e4eb82 | 2015-06-04 17:31:41 -0400 | [diff] [blame] | 452 | dev_err(&hdmi->pdev->dev, "failed to enable HPD: %d\n", ret); |
Archit Taneja | 8208ed9 | 2016-05-02 11:05:53 +0530 | [diff] [blame] | 453 | return ERR_PTR(ret); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 454 | } |
| 455 | |
Rob Clark | a3376e3 | 2013-08-30 13:02:15 -0400 | [diff] [blame] | 456 | drm_mode_connector_attach_encoder(connector, hdmi->encoder); |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 457 | |
| 458 | return connector; |
Rob Clark | c8afe68 | 2013-06-26 12:44:06 -0400 | [diff] [blame] | 459 | } |