Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 1 | /* |
Amit Daniel Kachhap | 59dfa54 | 2013-06-24 16:20:26 +0530 | [diff] [blame] | 2 | * exynos_tmu.c - Samsung EXYNOS TMU (Thermal Management Unit) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 3 | * |
| 4 | * Copyright (C) 2011 Samsung Electronics |
| 5 | * Donggeun Kim <dg77.kim@samsung.com> |
Amit Daniel Kachhap | c48cbba | 2012-08-16 17:11:41 +0530 | [diff] [blame] | 6 | * Amit Daniel Kachhap <amit.kachhap@linaro.org> |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 7 | * |
| 8 | * This program is free software; you can redistribute it and/or modify |
| 9 | * it under the terms of the GNU General Public License as published by |
| 10 | * the Free Software Foundation; either version 2 of the License, or |
| 11 | * (at your option) any later version. |
| 12 | * |
| 13 | * This program is distributed in the hope that it will be useful, |
| 14 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 15 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 16 | * GNU General Public License for more details. |
| 17 | * |
| 18 | * You should have received a copy of the GNU General Public License |
| 19 | * along with this program; if not, write to the Free Software |
| 20 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 21 | * |
| 22 | */ |
| 23 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 24 | #include <linux/clk.h> |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 25 | #include <linux/io.h> |
Amit Daniel Kachhap | 1b67864 | 2013-06-24 16:20:25 +0530 | [diff] [blame] | 26 | #include <linux/interrupt.h> |
| 27 | #include <linux/module.h> |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 28 | #include <linux/of.h> |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 29 | #include <linux/of_address.h> |
| 30 | #include <linux/of_irq.h> |
Amit Daniel Kachhap | 1b67864 | 2013-06-24 16:20:25 +0530 | [diff] [blame] | 31 | #include <linux/platform_device.h> |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 32 | #include <linux/regulator/consumer.h> |
Amit Daniel Kachhap | 1b67864 | 2013-06-24 16:20:25 +0530 | [diff] [blame] | 33 | |
| 34 | #include "exynos_thermal_common.h" |
Amit Daniel Kachhap | 0c1836a | 2013-06-24 16:20:27 +0530 | [diff] [blame] | 35 | #include "exynos_tmu.h" |
Amit Daniel Kachhap | e6b7991 | 2013-06-24 16:20:28 +0530 | [diff] [blame] | 36 | #include "exynos_tmu_data.h" |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 37 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 38 | /** |
| 39 | * struct exynos_tmu_data : A structure to hold the private data of the TMU |
| 40 | driver |
| 41 | * @id: identifier of the one instance of the TMU controller. |
| 42 | * @pdata: pointer to the tmu platform/configuration data |
| 43 | * @base: base address of the single instance of the TMU controller. |
Naveen Krishna Chatradhi | 9025d56 | 2013-12-19 11:36:08 +0530 | [diff] [blame] | 44 | * @base_second: base address of the common registers of the TMU controller. |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 45 | * @irq: irq number of the TMU controller. |
| 46 | * @soc: id of the SOC type. |
| 47 | * @irq_work: pointer to the irq work structure. |
| 48 | * @lock: lock to implement synchronization. |
| 49 | * @clk: pointer to the clock structure. |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 50 | * @clk_sec: pointer to the clock structure for accessing the base_second. |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 51 | * @temp_error1: fused value of the first point trim. |
| 52 | * @temp_error2: fused value of the second point trim. |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 53 | * @regulator: pointer to the TMU regulator structure. |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 54 | * @reg_conf: pointer to structure to register with core thermal. |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 55 | * @tmu_initialize: SoC specific TMU initialization method |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 56 | * @tmu_control: SoC specific TMU control method |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 57 | * @tmu_read: SoC specific TMU temperature read method |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 58 | * @tmu_set_emulation: SoC specific TMU emulation setting method |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 59 | * @tmu_clear_irqs: SoC specific TMU interrupts clearing method |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 60 | */ |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 61 | struct exynos_tmu_data { |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 62 | int id; |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 63 | struct exynos_tmu_platform_data *pdata; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 64 | void __iomem *base; |
Naveen Krishna Chatradhi | 9025d56 | 2013-12-19 11:36:08 +0530 | [diff] [blame] | 65 | void __iomem *base_second; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 66 | int irq; |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 67 | enum soc_type soc; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 68 | struct work_struct irq_work; |
| 69 | struct mutex lock; |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 70 | struct clk *clk, *clk_sec; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 71 | u8 temp_error1, temp_error2; |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 72 | struct regulator *regulator; |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 73 | struct thermal_sensor_conf *reg_conf; |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 74 | int (*tmu_initialize)(struct platform_device *pdev); |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 75 | void (*tmu_control)(struct platform_device *pdev, bool on); |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 76 | int (*tmu_read)(struct exynos_tmu_data *data); |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 77 | void (*tmu_set_emulation)(struct exynos_tmu_data *data, |
| 78 | unsigned long temp); |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 79 | void (*tmu_clear_irqs)(struct exynos_tmu_data *data); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 80 | }; |
| 81 | |
| 82 | /* |
| 83 | * TMU treats temperature as a mapped temperature code. |
| 84 | * The temperature is converted differently depending on the calibration type. |
| 85 | */ |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 86 | static int temp_to_code(struct exynos_tmu_data *data, u8 temp) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 87 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 88 | struct exynos_tmu_platform_data *pdata = data->pdata; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 89 | int temp_code; |
| 90 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 91 | switch (pdata->cal_type) { |
| 92 | case TYPE_TWO_POINT_TRIMMING: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 93 | temp_code = (temp - pdata->first_point_trim) * |
| 94 | (data->temp_error2 - data->temp_error1) / |
| 95 | (pdata->second_point_trim - pdata->first_point_trim) + |
| 96 | data->temp_error1; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 97 | break; |
| 98 | case TYPE_ONE_POINT_TRIMMING: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 99 | temp_code = temp + data->temp_error1 - pdata->first_point_trim; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 100 | break; |
| 101 | default: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 102 | temp_code = temp + pdata->default_temp_offset; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 103 | break; |
| 104 | } |
Bartlomiej Zolnierkiewicz | ddb31d4 | 2014-07-31 19:11:03 +0200 | [diff] [blame] | 105 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 106 | return temp_code; |
| 107 | } |
| 108 | |
| 109 | /* |
| 110 | * Calculate a temperature value from a temperature code. |
| 111 | * The unit of the temperature is degree Celsius. |
| 112 | */ |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 113 | static int code_to_temp(struct exynos_tmu_data *data, u8 temp_code) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 114 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 115 | struct exynos_tmu_platform_data *pdata = data->pdata; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 116 | int temp; |
| 117 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 118 | switch (pdata->cal_type) { |
| 119 | case TYPE_TWO_POINT_TRIMMING: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 120 | temp = (temp_code - data->temp_error1) * |
| 121 | (pdata->second_point_trim - pdata->first_point_trim) / |
| 122 | (data->temp_error2 - data->temp_error1) + |
| 123 | pdata->first_point_trim; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 124 | break; |
| 125 | case TYPE_ONE_POINT_TRIMMING: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 126 | temp = temp_code - data->temp_error1 + pdata->first_point_trim; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 127 | break; |
| 128 | default: |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 129 | temp = temp_code - pdata->default_temp_offset; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 130 | break; |
| 131 | } |
Bartlomiej Zolnierkiewicz | ddb31d4 | 2014-07-31 19:11:03 +0200 | [diff] [blame] | 132 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 133 | return temp; |
| 134 | } |
| 135 | |
Bartlomiej Zolnierkiewicz | 8328a4b | 2014-11-13 16:01:11 +0100 | [diff] [blame] | 136 | static void sanitize_temp_error(struct exynos_tmu_data *data, u32 trim_info) |
| 137 | { |
| 138 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 139 | |
| 140 | data->temp_error1 = trim_info & EXYNOS_TMU_TEMP_MASK; |
| 141 | data->temp_error2 = ((trim_info >> EXYNOS_TRIMINFO_85_SHIFT) & |
| 142 | EXYNOS_TMU_TEMP_MASK); |
| 143 | |
| 144 | if (!data->temp_error1 || |
| 145 | (pdata->min_efuse_value > data->temp_error1) || |
| 146 | (data->temp_error1 > pdata->max_efuse_value)) |
| 147 | data->temp_error1 = pdata->efuse_value & EXYNOS_TMU_TEMP_MASK; |
| 148 | |
| 149 | if (!data->temp_error2) |
| 150 | data->temp_error2 = |
| 151 | (pdata->efuse_value >> EXYNOS_TRIMINFO_85_SHIFT) & |
| 152 | EXYNOS_TMU_TEMP_MASK; |
| 153 | } |
| 154 | |
Bartlomiej Zolnierkiewicz | fe87789 | 2014-11-13 16:01:12 +0100 | [diff] [blame] | 155 | static u32 get_th_reg(struct exynos_tmu_data *data, u32 threshold, bool falling) |
| 156 | { |
| 157 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 158 | int i; |
| 159 | |
| 160 | for (i = 0; i < pdata->non_hw_trigger_levels; i++) { |
| 161 | u8 temp = pdata->trigger_levels[i]; |
| 162 | |
| 163 | if (falling) |
| 164 | temp -= pdata->threshold_falling; |
| 165 | else |
| 166 | threshold &= ~(0xff << 8 * i); |
| 167 | |
| 168 | threshold |= temp_to_code(data, temp) << 8 * i; |
| 169 | } |
| 170 | |
| 171 | return threshold; |
| 172 | } |
| 173 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 174 | static int exynos_tmu_initialize(struct platform_device *pdev) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 175 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 176 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 177 | int ret; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 178 | |
| 179 | mutex_lock(&data->lock); |
| 180 | clk_enable(data->clk); |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 181 | if (!IS_ERR(data->clk_sec)) |
| 182 | clk_enable(data->clk_sec); |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 183 | ret = data->tmu_initialize(pdev); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 184 | clk_disable(data->clk); |
| 185 | mutex_unlock(&data->lock); |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 186 | if (!IS_ERR(data->clk_sec)) |
| 187 | clk_disable(data->clk_sec); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 188 | |
| 189 | return ret; |
| 190 | } |
| 191 | |
Bartlomiej Zolnierkiewicz | d00671c | 2014-11-13 16:01:14 +0100 | [diff] [blame] | 192 | static u32 get_con_reg(struct exynos_tmu_data *data, u32 con) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 193 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 194 | struct exynos_tmu_platform_data *pdata = data->pdata; |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 195 | |
Lukasz Majewski | 86f5362 | 2013-10-09 08:29:52 +0200 | [diff] [blame] | 196 | if (pdata->test_mux) |
Bartlomiej Zolnierkiewicz | bfb2b88 | 2014-11-13 16:01:00 +0100 | [diff] [blame] | 197 | con |= (pdata->test_mux << EXYNOS4412_MUX_ADDR_SHIFT); |
Lukasz Majewski | 86f5362 | 2013-10-09 08:29:52 +0200 | [diff] [blame] | 198 | |
Bartlomiej Zolnierkiewicz | 99d67fb | 2014-07-31 19:11:06 +0200 | [diff] [blame] | 199 | con &= ~(EXYNOS_TMU_REF_VOLTAGE_MASK << EXYNOS_TMU_REF_VOLTAGE_SHIFT); |
| 200 | con |= pdata->reference_voltage << EXYNOS_TMU_REF_VOLTAGE_SHIFT; |
Amit Daniel Kachhap | d0a0ce3 | 2013-06-24 16:20:29 +0530 | [diff] [blame] | 201 | |
Bartlomiej Zolnierkiewicz | 99d67fb | 2014-07-31 19:11:06 +0200 | [diff] [blame] | 202 | con &= ~(EXYNOS_TMU_BUF_SLOPE_SEL_MASK << EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT); |
| 203 | con |= (pdata->gain << EXYNOS_TMU_BUF_SLOPE_SEL_SHIFT); |
Amit Daniel Kachhap | d0a0ce3 | 2013-06-24 16:20:29 +0530 | [diff] [blame] | 204 | |
| 205 | if (pdata->noise_cancel_mode) { |
Bartlomiej Zolnierkiewicz | b9504a6 | 2014-11-13 16:01:01 +0100 | [diff] [blame] | 206 | con &= ~(EXYNOS_TMU_TRIP_MODE_MASK << EXYNOS_TMU_TRIP_MODE_SHIFT); |
| 207 | con |= (pdata->noise_cancel_mode << EXYNOS_TMU_TRIP_MODE_SHIFT); |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 208 | } |
| 209 | |
Bartlomiej Zolnierkiewicz | d00671c | 2014-11-13 16:01:14 +0100 | [diff] [blame] | 210 | return con; |
| 211 | } |
| 212 | |
| 213 | static void exynos_tmu_control(struct platform_device *pdev, bool on) |
| 214 | { |
| 215 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
Bartlomiej Zolnierkiewicz | d00671c | 2014-11-13 16:01:14 +0100 | [diff] [blame] | 216 | |
| 217 | mutex_lock(&data->lock); |
| 218 | clk_enable(data->clk); |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 219 | data->tmu_control(pdev, on); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 220 | clk_disable(data->clk); |
| 221 | mutex_unlock(&data->lock); |
| 222 | } |
| 223 | |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 224 | static int exynos4210_tmu_initialize(struct platform_device *pdev) |
| 225 | { |
| 226 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 227 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 228 | unsigned int status; |
| 229 | int ret = 0, threshold_code, i; |
| 230 | |
| 231 | status = readb(data->base + EXYNOS_TMU_REG_STATUS); |
| 232 | if (!status) { |
| 233 | ret = -EBUSY; |
| 234 | goto out; |
| 235 | } |
| 236 | |
| 237 | sanitize_temp_error(data, readl(data->base + EXYNOS_TMU_REG_TRIMINFO)); |
| 238 | |
| 239 | /* Write temperature code for threshold */ |
| 240 | threshold_code = temp_to_code(data, pdata->threshold); |
| 241 | writeb(threshold_code, data->base + EXYNOS4210_TMU_REG_THRESHOLD_TEMP); |
| 242 | |
| 243 | for (i = 0; i < pdata->non_hw_trigger_levels; i++) |
| 244 | writeb(pdata->trigger_levels[i], data->base + |
| 245 | EXYNOS4210_TMU_REG_TRIG_LEVEL0 + i * 4); |
| 246 | |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 247 | data->tmu_clear_irqs(data); |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 248 | out: |
| 249 | return ret; |
| 250 | } |
| 251 | |
| 252 | static int exynos4412_tmu_initialize(struct platform_device *pdev) |
| 253 | { |
| 254 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 255 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 256 | unsigned int status, trim_info, con, ctrl, rising_threshold; |
| 257 | int ret = 0, threshold_code, i; |
| 258 | |
| 259 | status = readb(data->base + EXYNOS_TMU_REG_STATUS); |
| 260 | if (!status) { |
| 261 | ret = -EBUSY; |
| 262 | goto out; |
| 263 | } |
| 264 | |
| 265 | if (data->soc == SOC_ARCH_EXYNOS3250 || |
| 266 | data->soc == SOC_ARCH_EXYNOS4412 || |
| 267 | data->soc == SOC_ARCH_EXYNOS5250) { |
| 268 | if (data->soc == SOC_ARCH_EXYNOS3250) { |
| 269 | ctrl = readl(data->base + EXYNOS_TMU_TRIMINFO_CON1); |
| 270 | ctrl |= EXYNOS_TRIMINFO_RELOAD_ENABLE; |
| 271 | writel(ctrl, data->base + EXYNOS_TMU_TRIMINFO_CON1); |
| 272 | } |
| 273 | ctrl = readl(data->base + EXYNOS_TMU_TRIMINFO_CON2); |
| 274 | ctrl |= EXYNOS_TRIMINFO_RELOAD_ENABLE; |
| 275 | writel(ctrl, data->base + EXYNOS_TMU_TRIMINFO_CON2); |
| 276 | } |
| 277 | |
| 278 | /* On exynos5420 the triminfo register is in the shared space */ |
| 279 | if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO) |
| 280 | trim_info = readl(data->base_second + EXYNOS_TMU_REG_TRIMINFO); |
| 281 | else |
| 282 | trim_info = readl(data->base + EXYNOS_TMU_REG_TRIMINFO); |
| 283 | |
| 284 | sanitize_temp_error(data, trim_info); |
| 285 | |
| 286 | /* Write temperature code for rising and falling threshold */ |
| 287 | rising_threshold = readl(data->base + EXYNOS_THD_TEMP_RISE); |
| 288 | rising_threshold = get_th_reg(data, rising_threshold, false); |
| 289 | writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE); |
| 290 | writel(get_th_reg(data, 0, true), data->base + EXYNOS_THD_TEMP_FALL); |
| 291 | |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 292 | data->tmu_clear_irqs(data); |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 293 | |
| 294 | /* if last threshold limit is also present */ |
| 295 | i = pdata->max_trigger_level - 1; |
| 296 | if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) { |
| 297 | threshold_code = temp_to_code(data, pdata->trigger_levels[i]); |
| 298 | /* 1-4 level to be assigned in th0 reg */ |
| 299 | rising_threshold &= ~(0xff << 8 * i); |
| 300 | rising_threshold |= threshold_code << 8 * i; |
| 301 | writel(rising_threshold, data->base + EXYNOS_THD_TEMP_RISE); |
| 302 | con = readl(data->base + EXYNOS_TMU_REG_CONTROL); |
| 303 | con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT); |
| 304 | writel(con, data->base + EXYNOS_TMU_REG_CONTROL); |
| 305 | } |
| 306 | out: |
| 307 | return ret; |
| 308 | } |
| 309 | |
| 310 | static int exynos5440_tmu_initialize(struct platform_device *pdev) |
| 311 | { |
| 312 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 313 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 314 | unsigned int trim_info = 0, con, rising_threshold; |
| 315 | int ret = 0, threshold_code, i; |
| 316 | |
| 317 | /* |
| 318 | * For exynos5440 soc triminfo value is swapped between TMU0 and |
| 319 | * TMU2, so the below logic is needed. |
| 320 | */ |
| 321 | switch (data->id) { |
| 322 | case 0: |
| 323 | trim_info = readl(data->base + EXYNOS5440_EFUSE_SWAP_OFFSET + |
| 324 | EXYNOS5440_TMU_S0_7_TRIM); |
| 325 | break; |
| 326 | case 1: |
| 327 | trim_info = readl(data->base + EXYNOS5440_TMU_S0_7_TRIM); |
| 328 | break; |
| 329 | case 2: |
| 330 | trim_info = readl(data->base - EXYNOS5440_EFUSE_SWAP_OFFSET + |
| 331 | EXYNOS5440_TMU_S0_7_TRIM); |
| 332 | } |
| 333 | sanitize_temp_error(data, trim_info); |
| 334 | |
| 335 | /* Write temperature code for rising and falling threshold */ |
| 336 | rising_threshold = readl(data->base + EXYNOS5440_TMU_S0_7_TH0); |
| 337 | rising_threshold = get_th_reg(data, rising_threshold, false); |
| 338 | writel(rising_threshold, data->base + EXYNOS5440_TMU_S0_7_TH0); |
| 339 | writel(0, data->base + EXYNOS5440_TMU_S0_7_TH1); |
| 340 | |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 341 | data->tmu_clear_irqs(data); |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 342 | |
| 343 | /* if last threshold limit is also present */ |
| 344 | i = pdata->max_trigger_level - 1; |
| 345 | if (pdata->trigger_levels[i] && pdata->trigger_type[i] == HW_TRIP) { |
| 346 | threshold_code = temp_to_code(data, pdata->trigger_levels[i]); |
| 347 | /* 5th level to be assigned in th2 reg */ |
| 348 | rising_threshold = |
| 349 | threshold_code << EXYNOS5440_TMU_TH_RISE4_SHIFT; |
| 350 | writel(rising_threshold, data->base + EXYNOS5440_TMU_S0_7_TH2); |
| 351 | con = readl(data->base + EXYNOS5440_TMU_S0_7_CTRL); |
| 352 | con |= (1 << EXYNOS_TMU_THERM_TRIP_EN_SHIFT); |
| 353 | writel(con, data->base + EXYNOS5440_TMU_S0_7_CTRL); |
| 354 | } |
| 355 | /* Clear the PMIN in the common TMU register */ |
| 356 | if (!data->id) |
| 357 | writel(0, data->base_second + EXYNOS5440_TMU_PMIN); |
| 358 | return ret; |
| 359 | } |
| 360 | |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 361 | static void exynos4210_tmu_control(struct platform_device *pdev, bool on) |
| 362 | { |
| 363 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 364 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 365 | unsigned int con, interrupt_en; |
| 366 | |
| 367 | con = get_con_reg(data, readl(data->base + EXYNOS_TMU_REG_CONTROL)); |
| 368 | |
| 369 | if (on) { |
| 370 | con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT); |
| 371 | interrupt_en = |
| 372 | pdata->trigger_enable[3] << EXYNOS_TMU_INTEN_RISE3_SHIFT | |
| 373 | pdata->trigger_enable[2] << EXYNOS_TMU_INTEN_RISE2_SHIFT | |
| 374 | pdata->trigger_enable[1] << EXYNOS_TMU_INTEN_RISE1_SHIFT | |
| 375 | pdata->trigger_enable[0] << EXYNOS_TMU_INTEN_RISE0_SHIFT; |
Bartlomiej Zolnierkiewicz | e076153 | 2014-11-13 16:01:20 +0100 | [diff] [blame] | 376 | if (data->soc != SOC_ARCH_EXYNOS4210) |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 377 | interrupt_en |= |
| 378 | interrupt_en << EXYNOS_TMU_INTEN_FALL0_SHIFT; |
| 379 | } else { |
| 380 | con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT); |
| 381 | interrupt_en = 0; /* Disable all interrupts */ |
| 382 | } |
| 383 | writel(interrupt_en, data->base + EXYNOS_TMU_REG_INTEN); |
| 384 | writel(con, data->base + EXYNOS_TMU_REG_CONTROL); |
| 385 | } |
| 386 | |
| 387 | static void exynos5440_tmu_control(struct platform_device *pdev, bool on) |
| 388 | { |
| 389 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 390 | struct exynos_tmu_platform_data *pdata = data->pdata; |
| 391 | unsigned int con, interrupt_en; |
| 392 | |
| 393 | con = get_con_reg(data, readl(data->base + EXYNOS5440_TMU_S0_7_CTRL)); |
| 394 | |
| 395 | if (on) { |
| 396 | con |= (1 << EXYNOS_TMU_CORE_EN_SHIFT); |
| 397 | interrupt_en = |
| 398 | pdata->trigger_enable[3] << EXYNOS5440_TMU_INTEN_RISE3_SHIFT | |
| 399 | pdata->trigger_enable[2] << EXYNOS5440_TMU_INTEN_RISE2_SHIFT | |
| 400 | pdata->trigger_enable[1] << EXYNOS5440_TMU_INTEN_RISE1_SHIFT | |
| 401 | pdata->trigger_enable[0] << EXYNOS5440_TMU_INTEN_RISE0_SHIFT; |
Bartlomiej Zolnierkiewicz | e076153 | 2014-11-13 16:01:20 +0100 | [diff] [blame] | 402 | interrupt_en |= interrupt_en << EXYNOS5440_TMU_INTEN_FALL0_SHIFT; |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 403 | } else { |
| 404 | con &= ~(1 << EXYNOS_TMU_CORE_EN_SHIFT); |
| 405 | interrupt_en = 0; /* Disable all interrupts */ |
| 406 | } |
| 407 | writel(interrupt_en, data->base + EXYNOS5440_TMU_S0_7_IRQEN); |
| 408 | writel(con, data->base + EXYNOS5440_TMU_S0_7_CTRL); |
| 409 | } |
| 410 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 411 | static int exynos_tmu_read(struct exynos_tmu_data *data) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 412 | { |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 413 | int ret; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 414 | |
| 415 | mutex_lock(&data->lock); |
| 416 | clk_enable(data->clk); |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 417 | ret = data->tmu_read(data); |
| 418 | if (ret >= 0) |
| 419 | ret = code_to_temp(data, ret); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 420 | clk_disable(data->clk); |
| 421 | mutex_unlock(&data->lock); |
| 422 | |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 423 | return ret; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 424 | } |
| 425 | |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 426 | #ifdef CONFIG_THERMAL_EMULATION |
Bartlomiej Zolnierkiewicz | 154013e | 2014-11-13 16:01:17 +0100 | [diff] [blame] | 427 | static u32 get_emul_con_reg(struct exynos_tmu_data *data, unsigned int val, |
| 428 | unsigned long temp) |
| 429 | { |
Bartlomiej Zolnierkiewicz | 154013e | 2014-11-13 16:01:17 +0100 | [diff] [blame] | 430 | if (temp) { |
| 431 | temp /= MCELSIUS; |
| 432 | |
Bartlomiej Zolnierkiewicz | d564b55 | 2014-11-13 16:01:21 +0100 | [diff] [blame] | 433 | if (data->soc != SOC_ARCH_EXYNOS5440) { |
Bartlomiej Zolnierkiewicz | 154013e | 2014-11-13 16:01:17 +0100 | [diff] [blame] | 434 | val &= ~(EXYNOS_EMUL_TIME_MASK << EXYNOS_EMUL_TIME_SHIFT); |
| 435 | val |= (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT); |
| 436 | } |
| 437 | val &= ~(EXYNOS_EMUL_DATA_MASK << EXYNOS_EMUL_DATA_SHIFT); |
| 438 | val |= (temp_to_code(data, temp) << EXYNOS_EMUL_DATA_SHIFT) | |
| 439 | EXYNOS_EMUL_ENABLE; |
| 440 | } else { |
| 441 | val &= ~EXYNOS_EMUL_ENABLE; |
| 442 | } |
| 443 | |
| 444 | return val; |
| 445 | } |
| 446 | |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 447 | static void exynos4412_tmu_set_emulation(struct exynos_tmu_data *data, |
| 448 | unsigned long temp) |
| 449 | { |
| 450 | unsigned int val; |
| 451 | u32 emul_con; |
| 452 | |
| 453 | if (data->soc == SOC_ARCH_EXYNOS5260) |
| 454 | emul_con = EXYNOS5260_EMUL_CON; |
| 455 | else |
| 456 | emul_con = EXYNOS_EMUL_CON; |
| 457 | |
| 458 | val = readl(data->base + emul_con); |
| 459 | val = get_emul_con_reg(data, val, temp); |
| 460 | writel(val, data->base + emul_con); |
| 461 | } |
| 462 | |
| 463 | static void exynos5440_tmu_set_emulation(struct exynos_tmu_data *data, |
| 464 | unsigned long temp) |
| 465 | { |
| 466 | unsigned int val; |
| 467 | |
| 468 | val = readl(data->base + EXYNOS5440_TMU_S0_7_DEBUG); |
| 469 | val = get_emul_con_reg(data, val, temp); |
| 470 | writel(val, data->base + EXYNOS5440_TMU_S0_7_DEBUG); |
| 471 | } |
| 472 | |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 473 | static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) |
| 474 | { |
| 475 | struct exynos_tmu_data *data = drv_data; |
Amit Daniel Kachhap | b8d582b | 2013-06-24 16:20:31 +0530 | [diff] [blame] | 476 | struct exynos_tmu_platform_data *pdata = data->pdata; |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 477 | int ret = -EINVAL; |
| 478 | |
Bartlomiej Zolnierkiewicz | ef3f80f | 2014-11-13 16:01:22 +0100 | [diff] [blame^] | 479 | if (data->soc == SOC_ARCH_EXYNOS4210) |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 480 | goto out; |
| 481 | |
| 482 | if (temp && temp < MCELSIUS) |
| 483 | goto out; |
| 484 | |
| 485 | mutex_lock(&data->lock); |
| 486 | clk_enable(data->clk); |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 487 | data->tmu_set_emulation(data, temp); |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 488 | clk_disable(data->clk); |
| 489 | mutex_unlock(&data->lock); |
| 490 | return 0; |
| 491 | out: |
| 492 | return ret; |
| 493 | } |
| 494 | #else |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 495 | #define exynos4412_tmu_set_emulation NULL |
| 496 | #define exynos5440_tmu_set_emulation NULL |
Amit Daniel Kachhap | bffd1f8 | 2013-02-11 03:54:23 +0000 | [diff] [blame] | 497 | static int exynos_tmu_set_emulation(void *drv_data, unsigned long temp) |
| 498 | { return -EINVAL; } |
| 499 | #endif/*CONFIG_THERMAL_EMULATION*/ |
| 500 | |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 501 | static int exynos4210_tmu_read(struct exynos_tmu_data *data) |
| 502 | { |
| 503 | int ret = readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP); |
| 504 | |
| 505 | /* "temp_code" should range between 75 and 175 */ |
| 506 | return (ret < 75 || ret > 175) ? -ENODATA : ret; |
| 507 | } |
| 508 | |
| 509 | static int exynos4412_tmu_read(struct exynos_tmu_data *data) |
| 510 | { |
| 511 | return readb(data->base + EXYNOS_TMU_REG_CURRENT_TEMP); |
| 512 | } |
| 513 | |
| 514 | static int exynos5440_tmu_read(struct exynos_tmu_data *data) |
| 515 | { |
| 516 | return readb(data->base + EXYNOS5440_TMU_S0_7_TEMP); |
| 517 | } |
| 518 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 519 | static void exynos_tmu_work(struct work_struct *work) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 520 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 521 | struct exynos_tmu_data *data = container_of(work, |
| 522 | struct exynos_tmu_data, irq_work); |
Bartlomiej Zolnierkiewicz | b835ced | 2014-10-03 18:17:17 +0200 | [diff] [blame] | 523 | unsigned int val_type; |
Amit Daniel Kachhap | a0395ee | 2013-06-24 16:20:43 +0530 | [diff] [blame] | 524 | |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 525 | if (!IS_ERR(data->clk_sec)) |
| 526 | clk_enable(data->clk_sec); |
Amit Daniel Kachhap | a0395ee | 2013-06-24 16:20:43 +0530 | [diff] [blame] | 527 | /* Find which sensor generated this interrupt */ |
Bartlomiej Zolnierkiewicz | 421d5d1 | 2014-11-13 16:01:05 +0100 | [diff] [blame] | 528 | if (data->soc == SOC_ARCH_EXYNOS5440) { |
| 529 | val_type = readl(data->base_second + EXYNOS5440_TMU_IRQ_STATUS); |
Amit Daniel Kachhap | a0395ee | 2013-06-24 16:20:43 +0530 | [diff] [blame] | 530 | if (!((val_type >> data->id) & 0x1)) |
| 531 | goto out; |
| 532 | } |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 533 | if (!IS_ERR(data->clk_sec)) |
| 534 | clk_disable(data->clk_sec); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 535 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 536 | exynos_report_trigger(data->reg_conf); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 537 | mutex_lock(&data->lock); |
| 538 | clk_enable(data->clk); |
Amit Daniel Kachhap | b8d582b | 2013-06-24 16:20:31 +0530 | [diff] [blame] | 539 | |
Amit Daniel Kachhap | a4463c4 | 2013-06-24 16:20:33 +0530 | [diff] [blame] | 540 | /* TODO: take action based on particular interrupt */ |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 541 | data->tmu_clear_irqs(data); |
Amit Daniel Kachhap | b8d582b | 2013-06-24 16:20:31 +0530 | [diff] [blame] | 542 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 543 | clk_disable(data->clk); |
| 544 | mutex_unlock(&data->lock); |
Amit Daniel Kachhap | a0395ee | 2013-06-24 16:20:43 +0530 | [diff] [blame] | 545 | out: |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 546 | enable_irq(data->irq); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 547 | } |
| 548 | |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 549 | static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data) |
| 550 | { |
| 551 | unsigned int val_irq; |
| 552 | u32 tmu_intstat, tmu_intclear; |
| 553 | |
| 554 | if (data->soc == SOC_ARCH_EXYNOS5260) { |
| 555 | tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT; |
| 556 | tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR; |
| 557 | } else { |
| 558 | tmu_intstat = EXYNOS_TMU_REG_INTSTAT; |
| 559 | tmu_intclear = EXYNOS_TMU_REG_INTCLEAR; |
| 560 | } |
| 561 | |
| 562 | val_irq = readl(data->base + tmu_intstat); |
| 563 | /* |
| 564 | * Clear the interrupts. Please note that the documentation for |
| 565 | * Exynos3250, Exynos4412, Exynos5250 and Exynos5260 incorrectly |
| 566 | * states that INTCLEAR register has a different placing of bits |
| 567 | * responsible for FALL IRQs than INTSTAT register. Exynos5420 |
| 568 | * and Exynos5440 documentation is correct (Exynos4210 doesn't |
| 569 | * support FALL IRQs at all). |
| 570 | */ |
| 571 | writel(val_irq, data->base + tmu_intclear); |
| 572 | } |
| 573 | |
| 574 | static void exynos5440_tmu_clear_irqs(struct exynos_tmu_data *data) |
| 575 | { |
| 576 | unsigned int val_irq; |
| 577 | |
| 578 | val_irq = readl(data->base + EXYNOS5440_TMU_S0_7_IRQ); |
| 579 | /* clear the interrupts */ |
| 580 | writel(val_irq, data->base + EXYNOS5440_TMU_S0_7_IRQ); |
| 581 | } |
| 582 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 583 | static irqreturn_t exynos_tmu_irq(int irq, void *id) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 584 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 585 | struct exynos_tmu_data *data = id; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 586 | |
| 587 | disable_irq_nosync(irq); |
| 588 | schedule_work(&data->irq_work); |
| 589 | |
| 590 | return IRQ_HANDLED; |
| 591 | } |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 592 | |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 593 | static const struct of_device_id exynos_tmu_match[] = { |
| 594 | { |
Chanwoo Choi | 1fe56dc | 2014-07-01 09:33:19 +0900 | [diff] [blame] | 595 | .compatible = "samsung,exynos3250-tmu", |
| 596 | .data = (void *)EXYNOS3250_TMU_DRV_DATA, |
| 597 | }, |
| 598 | { |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 599 | .compatible = "samsung,exynos4210-tmu", |
| 600 | .data = (void *)EXYNOS4210_TMU_DRV_DATA, |
| 601 | }, |
| 602 | { |
Sachin Kamat | b6cee53 | 2013-04-18 11:37:59 +0000 | [diff] [blame] | 603 | .compatible = "samsung,exynos4412-tmu", |
Lukasz Majewski | 14ddfae | 2013-10-09 08:29:51 +0200 | [diff] [blame] | 604 | .data = (void *)EXYNOS4412_TMU_DRV_DATA, |
Sachin Kamat | b6cee53 | 2013-04-18 11:37:59 +0000 | [diff] [blame] | 605 | }, |
| 606 | { |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 607 | .compatible = "samsung,exynos5250-tmu", |
Amit Daniel Kachhap | e6b7991 | 2013-06-24 16:20:28 +0530 | [diff] [blame] | 608 | .data = (void *)EXYNOS5250_TMU_DRV_DATA, |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 609 | }, |
Amit Daniel Kachhap | 9054254 | 2013-06-24 16:20:44 +0530 | [diff] [blame] | 610 | { |
Naveen Krishna Chatradhi | 923488a | 2013-12-20 17:49:10 +0530 | [diff] [blame] | 611 | .compatible = "samsung,exynos5260-tmu", |
| 612 | .data = (void *)EXYNOS5260_TMU_DRV_DATA, |
| 613 | }, |
| 614 | { |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 615 | .compatible = "samsung,exynos5420-tmu", |
| 616 | .data = (void *)EXYNOS5420_TMU_DRV_DATA, |
| 617 | }, |
| 618 | { |
| 619 | .compatible = "samsung,exynos5420-tmu-ext-triminfo", |
| 620 | .data = (void *)EXYNOS5420_TMU_DRV_DATA, |
| 621 | }, |
| 622 | { |
Amit Daniel Kachhap | 9054254 | 2013-06-24 16:20:44 +0530 | [diff] [blame] | 623 | .compatible = "samsung,exynos5440-tmu", |
| 624 | .data = (void *)EXYNOS5440_TMU_DRV_DATA, |
| 625 | }, |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 626 | {}, |
| 627 | }; |
| 628 | MODULE_DEVICE_TABLE(of, exynos_tmu_match); |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 629 | |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 630 | static inline struct exynos_tmu_platform_data *exynos_get_driver_data( |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 631 | struct platform_device *pdev, int id) |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 632 | { |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 633 | struct exynos_tmu_init_data *data_table; |
| 634 | struct exynos_tmu_platform_data *tmu_data; |
Sachin Kamat | 73b5b1d | 2013-08-19 11:58:43 +0530 | [diff] [blame] | 635 | const struct of_device_id *match; |
| 636 | |
| 637 | match = of_match_node(exynos_tmu_match, pdev->dev.of_node); |
| 638 | if (!match) |
| 639 | return NULL; |
| 640 | data_table = (struct exynos_tmu_init_data *) match->data; |
| 641 | if (!data_table || id >= data_table->tmu_count) |
| 642 | return NULL; |
| 643 | tmu_data = data_table->tmu_data; |
| 644 | return (struct exynos_tmu_platform_data *) (tmu_data + id); |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 645 | } |
Jonghwa Lee | bbf63be | 2012-11-21 13:31:01 +0900 | [diff] [blame] | 646 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 647 | static int exynos_map_dt_data(struct platform_device *pdev) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 648 | { |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 649 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
| 650 | struct exynos_tmu_platform_data *pdata; |
| 651 | struct resource res; |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 652 | int ret; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 653 | |
Sachin Kamat | 73b5b1d | 2013-08-19 11:58:43 +0530 | [diff] [blame] | 654 | if (!data || !pdev->dev.of_node) |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 655 | return -ENODEV; |
Amit Daniel Kachhap | 17be868 | 2012-08-16 17:11:44 +0530 | [diff] [blame] | 656 | |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 657 | /* |
| 658 | * Try enabling the regulator if found |
| 659 | * TODO: Add regulator as an SOC feature, so that regulator enable |
| 660 | * is a compulsory call. |
| 661 | */ |
| 662 | data->regulator = devm_regulator_get(&pdev->dev, "vtmu"); |
| 663 | if (!IS_ERR(data->regulator)) { |
| 664 | ret = regulator_enable(data->regulator); |
| 665 | if (ret) { |
| 666 | dev_err(&pdev->dev, "failed to enable vtmu\n"); |
| 667 | return ret; |
| 668 | } |
| 669 | } else { |
| 670 | dev_info(&pdev->dev, "Regulator node (vtmu) not found\n"); |
| 671 | } |
| 672 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 673 | data->id = of_alias_get_id(pdev->dev.of_node, "tmuctrl"); |
| 674 | if (data->id < 0) |
| 675 | data->id = 0; |
| 676 | |
| 677 | data->irq = irq_of_parse_and_map(pdev->dev.of_node, 0); |
| 678 | if (data->irq <= 0) { |
| 679 | dev_err(&pdev->dev, "failed to get IRQ\n"); |
| 680 | return -ENODEV; |
| 681 | } |
| 682 | |
| 683 | if (of_address_to_resource(pdev->dev.of_node, 0, &res)) { |
| 684 | dev_err(&pdev->dev, "failed to get Resource 0\n"); |
| 685 | return -ENODEV; |
| 686 | } |
| 687 | |
| 688 | data->base = devm_ioremap(&pdev->dev, res.start, resource_size(&res)); |
| 689 | if (!data->base) { |
| 690 | dev_err(&pdev->dev, "Failed to ioremap memory\n"); |
| 691 | return -EADDRNOTAVAIL; |
| 692 | } |
| 693 | |
| 694 | pdata = exynos_get_driver_data(pdev, data->id); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 695 | if (!pdata) { |
| 696 | dev_err(&pdev->dev, "No platform init data supplied.\n"); |
| 697 | return -ENODEV; |
| 698 | } |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 699 | data->pdata = pdata; |
Amit Daniel Kachhap | d9b6ee1 | 2013-06-24 16:20:42 +0530 | [diff] [blame] | 700 | /* |
| 701 | * Check if the TMU shares some registers and then try to map the |
| 702 | * memory of common registers. |
| 703 | */ |
Naveen Krishna Chatradhi | 9025d56 | 2013-12-19 11:36:08 +0530 | [diff] [blame] | 704 | if (!TMU_SUPPORTS(pdata, ADDRESS_MULTIPLE)) |
Amit Daniel Kachhap | d9b6ee1 | 2013-06-24 16:20:42 +0530 | [diff] [blame] | 705 | return 0; |
| 706 | |
| 707 | if (of_address_to_resource(pdev->dev.of_node, 1, &res)) { |
| 708 | dev_err(&pdev->dev, "failed to get Resource 1\n"); |
| 709 | return -ENODEV; |
| 710 | } |
| 711 | |
Naveen Krishna Chatradhi | 9025d56 | 2013-12-19 11:36:08 +0530 | [diff] [blame] | 712 | data->base_second = devm_ioremap(&pdev->dev, res.start, |
Amit Daniel Kachhap | d9b6ee1 | 2013-06-24 16:20:42 +0530 | [diff] [blame] | 713 | resource_size(&res)); |
Naveen Krishna Chatradhi | 9025d56 | 2013-12-19 11:36:08 +0530 | [diff] [blame] | 714 | if (!data->base_second) { |
Amit Daniel Kachhap | d9b6ee1 | 2013-06-24 16:20:42 +0530 | [diff] [blame] | 715 | dev_err(&pdev->dev, "Failed to ioremap memory\n"); |
| 716 | return -ENOMEM; |
| 717 | } |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 718 | |
| 719 | return 0; |
| 720 | } |
| 721 | |
| 722 | static int exynos_tmu_probe(struct platform_device *pdev) |
| 723 | { |
| 724 | struct exynos_tmu_data *data; |
| 725 | struct exynos_tmu_platform_data *pdata; |
| 726 | struct thermal_sensor_conf *sensor_conf; |
| 727 | int ret, i; |
| 728 | |
Amit Daniel Kachhap | 79e093c | 2012-08-16 05:41:45 -0600 | [diff] [blame] | 729 | data = devm_kzalloc(&pdev->dev, sizeof(struct exynos_tmu_data), |
| 730 | GFP_KERNEL); |
Jingoo Han | 2a9675b | 2014-05-07 15:04:48 +0900 | [diff] [blame] | 731 | if (!data) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 732 | return -ENOMEM; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 733 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 734 | platform_set_drvdata(pdev, data); |
| 735 | mutex_init(&data->lock); |
| 736 | |
| 737 | ret = exynos_map_dt_data(pdev); |
| 738 | if (ret) |
| 739 | return ret; |
| 740 | |
| 741 | pdata = data->pdata; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 742 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 743 | INIT_WORK(&data->irq_work, exynos_tmu_work); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 744 | |
Sachin Kamat | 2a16279 | 2013-04-18 11:37:58 +0000 | [diff] [blame] | 745 | data->clk = devm_clk_get(&pdev->dev, "tmu_apbif"); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 746 | if (IS_ERR(data->clk)) { |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 747 | dev_err(&pdev->dev, "Failed to get clock\n"); |
Amit Daniel Kachhap | 79e093c | 2012-08-16 05:41:45 -0600 | [diff] [blame] | 748 | return PTR_ERR(data->clk); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 749 | } |
| 750 | |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 751 | data->clk_sec = devm_clk_get(&pdev->dev, "tmu_triminfo_apbif"); |
| 752 | if (IS_ERR(data->clk_sec)) { |
| 753 | if (data->soc == SOC_ARCH_EXYNOS5420_TRIMINFO) { |
| 754 | dev_err(&pdev->dev, "Failed to get triminfo clock\n"); |
| 755 | return PTR_ERR(data->clk_sec); |
| 756 | } |
| 757 | } else { |
| 758 | ret = clk_prepare(data->clk_sec); |
| 759 | if (ret) { |
| 760 | dev_err(&pdev->dev, "Failed to get clock\n"); |
| 761 | return ret; |
| 762 | } |
| 763 | } |
| 764 | |
Sachin Kamat | 2a16279 | 2013-04-18 11:37:58 +0000 | [diff] [blame] | 765 | ret = clk_prepare(data->clk); |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 766 | if (ret) { |
| 767 | dev_err(&pdev->dev, "Failed to get clock\n"); |
| 768 | goto err_clk_sec; |
| 769 | } |
Sachin Kamat | 2a16279 | 2013-04-18 11:37:58 +0000 | [diff] [blame] | 770 | |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 771 | data->soc = pdata->type; |
| 772 | |
| 773 | switch (data->soc) { |
| 774 | case SOC_ARCH_EXYNOS4210: |
| 775 | data->tmu_initialize = exynos4210_tmu_initialize; |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 776 | data->tmu_control = exynos4210_tmu_control; |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 777 | data->tmu_read = exynos4210_tmu_read; |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 778 | data->tmu_clear_irqs = exynos4210_tmu_clear_irqs; |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 779 | break; |
| 780 | case SOC_ARCH_EXYNOS3250: |
| 781 | case SOC_ARCH_EXYNOS4412: |
| 782 | case SOC_ARCH_EXYNOS5250: |
| 783 | case SOC_ARCH_EXYNOS5260: |
| 784 | case SOC_ARCH_EXYNOS5420: |
| 785 | case SOC_ARCH_EXYNOS5420_TRIMINFO: |
| 786 | data->tmu_initialize = exynos4412_tmu_initialize; |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 787 | data->tmu_control = exynos4210_tmu_control; |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 788 | data->tmu_read = exynos4412_tmu_read; |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 789 | data->tmu_set_emulation = exynos4412_tmu_set_emulation; |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 790 | data->tmu_clear_irqs = exynos4210_tmu_clear_irqs; |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 791 | break; |
| 792 | case SOC_ARCH_EXYNOS5440: |
| 793 | data->tmu_initialize = exynos5440_tmu_initialize; |
Bartlomiej Zolnierkiewicz | 37f9034 | 2014-11-13 16:01:15 +0100 | [diff] [blame] | 794 | data->tmu_control = exynos5440_tmu_control; |
Bartlomiej Zolnierkiewicz | b79985c | 2014-11-13 16:01:16 +0100 | [diff] [blame] | 795 | data->tmu_read = exynos5440_tmu_read; |
Bartlomiej Zolnierkiewicz | 285d994 | 2014-11-13 16:01:18 +0100 | [diff] [blame] | 796 | data->tmu_set_emulation = exynos5440_tmu_set_emulation; |
Bartlomiej Zolnierkiewicz | a7331f7 | 2014-11-13 16:01:19 +0100 | [diff] [blame] | 797 | data->tmu_clear_irqs = exynos5440_tmu_clear_irqs; |
Bartlomiej Zolnierkiewicz | 72d1100 | 2014-11-13 16:01:13 +0100 | [diff] [blame] | 798 | break; |
| 799 | default: |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 800 | ret = -EINVAL; |
| 801 | dev_err(&pdev->dev, "Platform not supported\n"); |
| 802 | goto err_clk; |
| 803 | } |
| 804 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 805 | ret = exynos_tmu_initialize(pdev); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 806 | if (ret) { |
| 807 | dev_err(&pdev->dev, "Failed to initialize TMU\n"); |
| 808 | goto err_clk; |
| 809 | } |
| 810 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 811 | exynos_tmu_control(pdev, true); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 812 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 813 | /* Allocate a structure to register with the exynos core thermal */ |
| 814 | sensor_conf = devm_kzalloc(&pdev->dev, |
| 815 | sizeof(struct thermal_sensor_conf), GFP_KERNEL); |
| 816 | if (!sensor_conf) { |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 817 | ret = -ENOMEM; |
| 818 | goto err_clk; |
| 819 | } |
| 820 | sprintf(sensor_conf->name, "therm_zone%d", data->id); |
| 821 | sensor_conf->read_temperature = (int (*)(void *))exynos_tmu_read; |
| 822 | sensor_conf->write_emul_temp = |
| 823 | (int (*)(void *, unsigned long))exynos_tmu_set_emulation; |
| 824 | sensor_conf->driver_data = data; |
| 825 | sensor_conf->trip_data.trip_count = pdata->trigger_enable[0] + |
Amit Daniel Kachhap | bb34b4c | 2013-06-24 16:20:30 +0530 | [diff] [blame] | 826 | pdata->trigger_enable[1] + pdata->trigger_enable[2]+ |
| 827 | pdata->trigger_enable[3]; |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 828 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 829 | for (i = 0; i < sensor_conf->trip_data.trip_count; i++) { |
| 830 | sensor_conf->trip_data.trip_val[i] = |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 831 | pdata->threshold + pdata->trigger_levels[i]; |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 832 | sensor_conf->trip_data.trip_type[i] = |
Amit Daniel Kachhap | 5c3cf55 | 2013-06-24 16:20:37 +0530 | [diff] [blame] | 833 | pdata->trigger_type[i]; |
| 834 | } |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 835 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 836 | sensor_conf->trip_data.trigger_falling = pdata->threshold_falling; |
Jonghwa Lee | 4f0a684 | 2013-02-08 01:13:06 +0000 | [diff] [blame] | 837 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 838 | sensor_conf->cooling_data.freq_clip_count = pdata->freq_tab_count; |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 839 | for (i = 0; i < pdata->freq_tab_count; i++) { |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 840 | sensor_conf->cooling_data.freq_data[i].freq_clip_max = |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 841 | pdata->freq_tab[i].freq_clip_max; |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 842 | sensor_conf->cooling_data.freq_data[i].temp_level = |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 843 | pdata->freq_tab[i].temp_level; |
| 844 | } |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 845 | sensor_conf->dev = &pdev->dev; |
| 846 | /* Register the sensor with thermal management interface */ |
| 847 | ret = exynos_register_thermal(sensor_conf); |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 848 | if (ret) { |
| 849 | dev_err(&pdev->dev, "Failed to register thermal interface\n"); |
| 850 | goto err_clk; |
| 851 | } |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 852 | data->reg_conf = sensor_conf; |
| 853 | |
| 854 | ret = devm_request_irq(&pdev->dev, data->irq, exynos_tmu_irq, |
| 855 | IRQF_TRIGGER_RISING | IRQF_SHARED, dev_name(&pdev->dev), data); |
| 856 | if (ret) { |
| 857 | dev_err(&pdev->dev, "Failed to request irq: %d\n", data->irq); |
| 858 | goto err_clk; |
| 859 | } |
Jonghwa Lee | bbf63be | 2012-11-21 13:31:01 +0900 | [diff] [blame] | 860 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 861 | return 0; |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 862 | err_clk: |
Sachin Kamat | 2a16279 | 2013-04-18 11:37:58 +0000 | [diff] [blame] | 863 | clk_unprepare(data->clk); |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 864 | err_clk_sec: |
| 865 | if (!IS_ERR(data->clk_sec)) |
| 866 | clk_unprepare(data->clk_sec); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 867 | return ret; |
| 868 | } |
| 869 | |
Greg Kroah-Hartman | 4eab7a9 | 2012-12-21 13:15:52 -0800 | [diff] [blame] | 870 | static int exynos_tmu_remove(struct platform_device *pdev) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 871 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 872 | struct exynos_tmu_data *data = platform_get_drvdata(pdev); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 873 | |
Amit Daniel Kachhap | cebe737 | 2013-06-24 16:20:39 +0530 | [diff] [blame] | 874 | exynos_unregister_thermal(data->reg_conf); |
Amit Daniel Kachhap | 7e0b55e | 2012-08-16 17:11:43 +0530 | [diff] [blame] | 875 | |
Bartlomiej Zolnierkiewicz | 4215688 | 2014-07-08 15:09:56 +0200 | [diff] [blame] | 876 | exynos_tmu_control(pdev, false); |
| 877 | |
Sachin Kamat | 2a16279 | 2013-04-18 11:37:58 +0000 | [diff] [blame] | 878 | clk_unprepare(data->clk); |
Naveen Krishna Chatradhi | 14a11dc | 2013-12-19 11:36:31 +0530 | [diff] [blame] | 879 | if (!IS_ERR(data->clk_sec)) |
| 880 | clk_unprepare(data->clk_sec); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 881 | |
Amit Daniel Kachhap | 498d22f | 2013-06-24 16:20:47 +0530 | [diff] [blame] | 882 | if (!IS_ERR(data->regulator)) |
| 883 | regulator_disable(data->regulator); |
| 884 | |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 885 | return 0; |
| 886 | } |
| 887 | |
Rafael J. Wysocki | 08cd675 | 2012-07-08 21:48:15 +0200 | [diff] [blame] | 888 | #ifdef CONFIG_PM_SLEEP |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 889 | static int exynos_tmu_suspend(struct device *dev) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 890 | { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 891 | exynos_tmu_control(to_platform_device(dev), false); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 892 | |
| 893 | return 0; |
| 894 | } |
| 895 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 896 | static int exynos_tmu_resume(struct device *dev) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 897 | { |
Rafael J. Wysocki | 08cd675 | 2012-07-08 21:48:15 +0200 | [diff] [blame] | 898 | struct platform_device *pdev = to_platform_device(dev); |
| 899 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 900 | exynos_tmu_initialize(pdev); |
| 901 | exynos_tmu_control(pdev, true); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 902 | |
| 903 | return 0; |
| 904 | } |
Rafael J. Wysocki | 08cd675 | 2012-07-08 21:48:15 +0200 | [diff] [blame] | 905 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 906 | static SIMPLE_DEV_PM_OPS(exynos_tmu_pm, |
| 907 | exynos_tmu_suspend, exynos_tmu_resume); |
| 908 | #define EXYNOS_TMU_PM (&exynos_tmu_pm) |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 909 | #else |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 910 | #define EXYNOS_TMU_PM NULL |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 911 | #endif |
| 912 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 913 | static struct platform_driver exynos_tmu_driver = { |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 914 | .driver = { |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 915 | .name = "exynos-tmu", |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 916 | .owner = THIS_MODULE, |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 917 | .pm = EXYNOS_TMU_PM, |
Sachin Kamat | 73b5b1d | 2013-08-19 11:58:43 +0530 | [diff] [blame] | 918 | .of_match_table = exynos_tmu_match, |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 919 | }, |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 920 | .probe = exynos_tmu_probe, |
Greg Kroah-Hartman | 4eab7a9 | 2012-12-21 13:15:52 -0800 | [diff] [blame] | 921 | .remove = exynos_tmu_remove, |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 922 | }; |
| 923 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 924 | module_platform_driver(exynos_tmu_driver); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 925 | |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 926 | MODULE_DESCRIPTION("EXYNOS TMU Driver"); |
Donggeun Kim | 9d97e5c | 2011-09-07 18:49:08 +0900 | [diff] [blame] | 927 | MODULE_AUTHOR("Donggeun Kim <dg77.kim@samsung.com>"); |
| 928 | MODULE_LICENSE("GPL"); |
Amit Daniel Kachhap | f22d9c0 | 2012-08-16 17:11:42 +0530 | [diff] [blame] | 929 | MODULE_ALIAS("platform:exynos-tmu"); |