Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 1 | /* Copyright (c) 2017, The Linux Foundation. All rights reserved. |
| 2 | * |
| 3 | * This program is free software; you can redistribute it and/or modify |
Siddartha Mohanadoss | cd8aa0b | 2017-04-06 15:17:46 -0700 | [diff] [blame] | 4 | * it under the terms of the GNU General Public License version 2 and |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 5 | * only version 2 as published by the Free Software Foundation. |
| 6 | * |
| 7 | * This program is distributed in the hope that it will be useful, |
| 8 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 9 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 10 | * GNU General Public License for more details. |
| 11 | * |
| 12 | */ |
| 13 | |
| 14 | #include <linux/err.h> |
| 15 | #include <linux/module.h> |
| 16 | #include <linux/of.h> |
| 17 | #include <linux/platform_device.h> |
| 18 | #include <linux/pm.h> |
| 19 | #include <linux/kernel.h> |
| 20 | #include <linux/io.h> |
| 21 | #include <linux/slab.h> |
| 22 | #include <linux/thermal.h> |
| 23 | #include "tsens.h" |
Ram Chandrasekar | 86eef43 | 2017-05-15 15:21:03 -0600 | [diff] [blame] | 24 | #include "qcom/qti_virtual_sensor.h" |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 25 | |
| 26 | LIST_HEAD(tsens_device_list); |
| 27 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 28 | static int tsens_get_temp(void *data, int *temp) |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 29 | { |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 30 | struct tsens_sensor *s = data; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 31 | struct tsens_device *tmdev = s->tmdev; |
| 32 | |
| 33 | return tmdev->ops->get_temp(s, temp); |
| 34 | } |
| 35 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 36 | static int tsens_set_trip_temp(void *data, int low_temp, int high_temp) |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 37 | { |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 38 | struct tsens_sensor *s = data; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 39 | struct tsens_device *tmdev = s->tmdev; |
| 40 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 41 | if (tmdev->ops->set_trips) |
| 42 | return tmdev->ops->set_trips(s, low_temp, high_temp); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 43 | |
| 44 | return 0; |
| 45 | } |
| 46 | |
| 47 | static int tsens_init(struct tsens_device *tmdev) |
| 48 | { |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 49 | return tmdev->ops->hw_init(tmdev); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 50 | } |
| 51 | |
| 52 | static int tsens_register_interrupts(struct tsens_device *tmdev) |
| 53 | { |
| 54 | if (tmdev->ops->interrupts_reg) |
| 55 | return tmdev->ops->interrupts_reg(tmdev); |
| 56 | |
| 57 | return 0; |
| 58 | } |
| 59 | |
| 60 | static const struct of_device_id tsens_table[] = { |
| 61 | { .compatible = "qcom,msm8996-tsens", |
| 62 | .data = &data_tsens2xxx, |
| 63 | }, |
| 64 | { .compatible = "qcom,msm8953-tsens", |
| 65 | .data = &data_tsens2xxx, |
| 66 | }, |
| 67 | { .compatible = "qcom,msm8998-tsens", |
| 68 | .data = &data_tsens2xxx, |
| 69 | }, |
| 70 | { .compatible = "qcom,msmhamster-tsens", |
| 71 | .data = &data_tsens2xxx, |
| 72 | }, |
| 73 | { .compatible = "qcom,sdm660-tsens", |
| 74 | .data = &data_tsens23xx, |
| 75 | }, |
| 76 | { .compatible = "qcom,sdm630-tsens", |
| 77 | .data = &data_tsens23xx, |
| 78 | }, |
| 79 | { .compatible = "qcom,sdm845-tsens", |
| 80 | .data = &data_tsens24xx, |
| 81 | }, |
Siddartha Mohanadoss | c96805e | 2017-07-18 12:42:57 -0700 | [diff] [blame] | 82 | { .compatible = "qcom,tsens24xx", |
| 83 | .data = &data_tsens24xx, |
| 84 | }, |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 85 | {} |
| 86 | }; |
| 87 | MODULE_DEVICE_TABLE(of, tsens_table); |
| 88 | |
| 89 | static struct thermal_zone_of_device_ops tsens_tm_thermal_zone_ops = { |
| 90 | .get_temp = tsens_get_temp, |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 91 | .set_trips = tsens_set_trip_temp, |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 92 | }; |
| 93 | |
| 94 | static int get_device_tree_data(struct platform_device *pdev, |
| 95 | struct tsens_device *tmdev) |
| 96 | { |
| 97 | struct device_node *of_node = pdev->dev.of_node; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 98 | const struct of_device_id *id; |
| 99 | const struct tsens_data *data; |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 100 | struct resource *res_tsens_mem; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 101 | |
| 102 | if (!of_match_node(tsens_table, of_node)) { |
| 103 | pr_err("Need to read SoC specific fuse map\n"); |
| 104 | return -ENODEV; |
| 105 | } |
| 106 | |
| 107 | id = of_match_node(tsens_table, of_node); |
| 108 | if (id == NULL) { |
| 109 | pr_err("can not find tsens_table of_node\n"); |
| 110 | return -ENODEV; |
| 111 | } |
| 112 | |
| 113 | data = id->data; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 114 | tmdev->ops = data->ops; |
| 115 | tmdev->ctrl_data = data; |
| 116 | tmdev->pdev = pdev; |
| 117 | |
| 118 | if (!tmdev->ops || !tmdev->ops->hw_init || !tmdev->ops->get_temp) { |
| 119 | pr_err("Invalid ops\n"); |
| 120 | return -EINVAL; |
| 121 | } |
| 122 | |
| 123 | /* TSENS register region */ |
| 124 | res_tsens_mem = platform_get_resource_byname(pdev, |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 125 | IORESOURCE_MEM, "tsens_srot_physical"); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 126 | if (!res_tsens_mem) { |
| 127 | pr_err("Could not get tsens physical address resource\n"); |
| 128 | return -EINVAL; |
| 129 | } |
| 130 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 131 | tmdev->tsens_srot_addr = devm_ioremap_resource(&pdev->dev, |
| 132 | res_tsens_mem); |
| 133 | if (IS_ERR(tmdev->tsens_srot_addr)) { |
| 134 | dev_err(&pdev->dev, "Failed to IO map TSENS registers.\n"); |
| 135 | return PTR_ERR(tmdev->tsens_srot_addr); |
| 136 | } |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 137 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 138 | /* TSENS TM register region */ |
| 139 | res_tsens_mem = platform_get_resource_byname(pdev, |
| 140 | IORESOURCE_MEM, "tsens_tm_physical"); |
| 141 | if (!res_tsens_mem) { |
| 142 | pr_err("Could not get tsens physical address resource\n"); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 143 | return -EINVAL; |
| 144 | } |
| 145 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 146 | tmdev->tsens_tm_addr = devm_ioremap_resource(&pdev->dev, |
| 147 | res_tsens_mem); |
| 148 | if (IS_ERR(tmdev->tsens_tm_addr)) { |
| 149 | dev_err(&pdev->dev, "Failed to IO map TSENS TM registers.\n"); |
| 150 | return PTR_ERR(tmdev->tsens_tm_addr); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 151 | } |
| 152 | |
| 153 | return 0; |
| 154 | } |
| 155 | |
| 156 | static int tsens_thermal_zone_register(struct tsens_device *tmdev) |
| 157 | { |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 158 | int i = 0, sensor_missing = 0; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 159 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 160 | for (i = 0; i < TSENS_MAX_SENSORS; i++) { |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 161 | tmdev->sensor[i].tmdev = tmdev; |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 162 | tmdev->sensor[i].hw_id = i; |
Siddartha Mohanadoss | f86413d | 2017-07-18 13:44:31 -0700 | [diff] [blame] | 163 | if (tmdev->ops->sensor_en(tmdev, i)) { |
| 164 | tmdev->sensor[i].tzd = |
| 165 | devm_thermal_zone_of_sensor_register( |
| 166 | &tmdev->pdev->dev, i, |
| 167 | &tmdev->sensor[i], &tsens_tm_thermal_zone_ops); |
| 168 | if (IS_ERR(tmdev->sensor[i].tzd)) { |
| 169 | pr_debug("Error registering sensor:%d\n", i); |
| 170 | sensor_missing++; |
| 171 | continue; |
| 172 | } |
| 173 | } else { |
| 174 | pr_debug("Sensor not enabled:%d\n", i); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 175 | } |
| 176 | } |
| 177 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 178 | if (sensor_missing == TSENS_MAX_SENSORS) { |
| 179 | pr_err("No TSENS sensors to register?\n"); |
| 180 | return -ENODEV; |
| 181 | } |
| 182 | |
Ram Chandrasekar | 86eef43 | 2017-05-15 15:21:03 -0600 | [diff] [blame] | 183 | /* Register virtual thermal sensors. */ |
| 184 | qti_virtual_sensor_register(&tmdev->pdev->dev); |
| 185 | |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 186 | return 0; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 187 | } |
| 188 | |
| 189 | static int tsens_tm_remove(struct platform_device *pdev) |
| 190 | { |
| 191 | platform_set_drvdata(pdev, NULL); |
| 192 | |
| 193 | return 0; |
| 194 | } |
| 195 | |
| 196 | int tsens_tm_probe(struct platform_device *pdev) |
| 197 | { |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 198 | struct tsens_device *tmdev = NULL; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 199 | int rc; |
| 200 | |
| 201 | if (!(pdev->dev.of_node)) |
| 202 | return -ENODEV; |
| 203 | |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 204 | tmdev = devm_kzalloc(&pdev->dev, |
| 205 | sizeof(struct tsens_device) + |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 206 | TSENS_MAX_SENSORS * |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 207 | sizeof(struct tsens_sensor), |
| 208 | GFP_KERNEL); |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 209 | if (tmdev == NULL) |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 210 | return -ENOMEM; |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 211 | |
| 212 | rc = get_device_tree_data(pdev, tmdev); |
| 213 | if (rc) { |
| 214 | pr_err("Error reading TSENS DT\n"); |
| 215 | return rc; |
| 216 | } |
| 217 | |
| 218 | rc = tsens_init(tmdev); |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 219 | if (rc) { |
| 220 | pr_err("Error initializing TSENS controller\n"); |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 221 | return rc; |
Siddartha Mohanadoss | 07b1061 | 2017-04-07 14:53:45 -0700 | [diff] [blame] | 222 | } |
Siddartha Mohanadoss | 41b4cd9 | 2017-02-21 14:34:23 -0800 | [diff] [blame] | 223 | |
| 224 | rc = tsens_thermal_zone_register(tmdev); |
| 225 | if (rc) { |
| 226 | pr_err("Error registering the thermal zone\n"); |
| 227 | return rc; |
| 228 | } |
| 229 | |
| 230 | rc = tsens_register_interrupts(tmdev); |
| 231 | if (rc < 0) { |
| 232 | pr_err("TSENS interrupt register failed:%d\n", rc); |
| 233 | return rc; |
| 234 | } |
| 235 | |
| 236 | list_add_tail(&tmdev->list, &tsens_device_list); |
| 237 | platform_set_drvdata(pdev, tmdev); |
| 238 | |
| 239 | return rc; |
| 240 | } |
| 241 | |
| 242 | static struct platform_driver tsens_tm_driver = { |
| 243 | .probe = tsens_tm_probe, |
| 244 | .remove = tsens_tm_remove, |
| 245 | .driver = { |
| 246 | .name = "msm-tsens", |
| 247 | .owner = THIS_MODULE, |
| 248 | .of_match_table = tsens_table, |
| 249 | }, |
| 250 | }; |
| 251 | |
| 252 | int __init tsens_tm_init_driver(void) |
| 253 | { |
| 254 | return platform_driver_register(&tsens_tm_driver); |
| 255 | } |
| 256 | subsys_initcall(tsens_tm_init_driver); |
| 257 | |
| 258 | static void __exit tsens_tm_deinit(void) |
| 259 | { |
| 260 | platform_driver_unregister(&tsens_tm_driver); |
| 261 | } |
| 262 | module_exit(tsens_tm_deinit); |
| 263 | |
| 264 | MODULE_ALIAS("platform:" TSENS_DRIVER_NAME); |
| 265 | MODULE_LICENSE("GPL v2"); |