1c9545790SKuninori Morimoto // SPDX-License-Identifier: GPL-2.0 21e426ffdSKuninori Morimoto /* 31e426ffdSKuninori Morimoto * R-Car THS/TSC thermal sensor driver 41e426ffdSKuninori Morimoto * 51e426ffdSKuninori Morimoto * Copyright (C) 2012 Renesas Solutions Corp. 61e426ffdSKuninori Morimoto * Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> 71e426ffdSKuninori Morimoto */ 81e426ffdSKuninori Morimoto #include <linux/delay.h> 91e426ffdSKuninori Morimoto #include <linux/err.h> 10e0a5172eSKuninori Morimoto #include <linux/irq.h> 11e0a5172eSKuninori Morimoto #include <linux/interrupt.h> 121e426ffdSKuninori Morimoto #include <linux/io.h> 131e426ffdSKuninori Morimoto #include <linux/module.h> 148b477ea5SKuninori Morimoto #include <linux/of_device.h> 151e426ffdSKuninori Morimoto #include <linux/platform_device.h> 1651d45d25SKuninori Morimoto #include <linux/pm_runtime.h> 17d2a73e22Skuninori.morimoto.gx@renesas.com #include <linux/reboot.h> 181e426ffdSKuninori Morimoto #include <linux/slab.h> 191e426ffdSKuninori Morimoto #include <linux/spinlock.h> 201e426ffdSKuninori Morimoto #include <linux/thermal.h> 211e426ffdSKuninori Morimoto 2264a411e8SKuninori Morimoto #include "thermal_hwmon.h" 2364a411e8SKuninori Morimoto 24d2a73e22Skuninori.morimoto.gx@renesas.com #define IDLE_INTERVAL 5000 25d2a73e22Skuninori.morimoto.gx@renesas.com 26e0a5172eSKuninori Morimoto #define COMMON_STR 0x00 27e0a5172eSKuninori Morimoto #define COMMON_ENR 0x04 28e0a5172eSKuninori Morimoto #define COMMON_INTMSK 0x0c 29e0a5172eSKuninori Morimoto 30e0a5172eSKuninori Morimoto #define REG_POSNEG 0x20 31e0a5172eSKuninori Morimoto #define REG_FILONOFF 0x28 32e9137a58SKuninori Morimoto #define REG_THSCR 0x2c 33e9137a58SKuninori Morimoto #define REG_THSSR 0x30 34e0a5172eSKuninori Morimoto #define REG_INTCTRL 0x34 351e426ffdSKuninori Morimoto 361e426ffdSKuninori Morimoto /* THSCR */ 37f8f53e18SKuninori Morimoto #define CPCTL (1 << 12) 381e426ffdSKuninori Morimoto 391e426ffdSKuninori Morimoto /* THSSR */ 401e426ffdSKuninori Morimoto #define CTEMP 0x3f 411e426ffdSKuninori Morimoto 423676d1ddSKuninori Morimoto struct rcar_thermal_common { 433676d1ddSKuninori Morimoto void __iomem *base; 443676d1ddSKuninori Morimoto struct device *dev; 453676d1ddSKuninori Morimoto struct list_head head; 46e0a5172eSKuninori Morimoto spinlock_t lock; 473676d1ddSKuninori Morimoto }; 481e426ffdSKuninori Morimoto 491969d9dcSYoshihiro Kaneko struct rcar_thermal_chip { 501969d9dcSYoshihiro Kaneko unsigned int use_of_thermal : 1; 511969d9dcSYoshihiro Kaneko unsigned int has_filonoff : 1; 521969d9dcSYoshihiro Kaneko unsigned int irq_per_ch : 1; 531969d9dcSYoshihiro Kaneko unsigned int needs_suspend_resume : 1; 541969d9dcSYoshihiro Kaneko unsigned int nirqs; 5520386f0dSYoshihiro Kaneko unsigned int ctemp_bands; 561969d9dcSYoshihiro Kaneko }; 571969d9dcSYoshihiro Kaneko 581969d9dcSYoshihiro Kaneko static const struct rcar_thermal_chip rcar_thermal = { 591969d9dcSYoshihiro Kaneko .use_of_thermal = 0, 601969d9dcSYoshihiro Kaneko .has_filonoff = 1, 611969d9dcSYoshihiro Kaneko .irq_per_ch = 0, 621969d9dcSYoshihiro Kaneko .needs_suspend_resume = 0, 631969d9dcSYoshihiro Kaneko .nirqs = 1, 6420386f0dSYoshihiro Kaneko .ctemp_bands = 1, 651969d9dcSYoshihiro Kaneko }; 661969d9dcSYoshihiro Kaneko 671969d9dcSYoshihiro Kaneko static const struct rcar_thermal_chip rcar_gen2_thermal = { 681969d9dcSYoshihiro Kaneko .use_of_thermal = 1, 691969d9dcSYoshihiro Kaneko .has_filonoff = 1, 701969d9dcSYoshihiro Kaneko .irq_per_ch = 0, 711969d9dcSYoshihiro Kaneko .needs_suspend_resume = 0, 721969d9dcSYoshihiro Kaneko .nirqs = 1, 7320386f0dSYoshihiro Kaneko .ctemp_bands = 1, 741969d9dcSYoshihiro Kaneko }; 751969d9dcSYoshihiro Kaneko 761969d9dcSYoshihiro Kaneko static const struct rcar_thermal_chip rcar_gen3_thermal = { 771969d9dcSYoshihiro Kaneko .use_of_thermal = 1, 781969d9dcSYoshihiro Kaneko .has_filonoff = 0, 791969d9dcSYoshihiro Kaneko .irq_per_ch = 1, 801969d9dcSYoshihiro Kaneko .needs_suspend_resume = 1, 811969d9dcSYoshihiro Kaneko /* 821969d9dcSYoshihiro Kaneko * The Gen3 chip has 3 interrupts, but this driver uses only 2 831969d9dcSYoshihiro Kaneko * interrupts to detect a temperature change, rise or fall. 841969d9dcSYoshihiro Kaneko */ 851969d9dcSYoshihiro Kaneko .nirqs = 2, 8620386f0dSYoshihiro Kaneko .ctemp_bands = 2, 871969d9dcSYoshihiro Kaneko }; 881969d9dcSYoshihiro Kaneko 891e426ffdSKuninori Morimoto struct rcar_thermal_priv { 901e426ffdSKuninori Morimoto void __iomem *base; 913676d1ddSKuninori Morimoto struct rcar_thermal_common *common; 923676d1ddSKuninori Morimoto struct thermal_zone_device *zone; 931969d9dcSYoshihiro Kaneko const struct rcar_thermal_chip *chip; 94e0a5172eSKuninori Morimoto struct delayed_work work; 95b2bbc6a2SKuninori Morimoto struct mutex lock; 963676d1ddSKuninori Morimoto struct list_head list; 97e0a5172eSKuninori Morimoto int id; 981e426ffdSKuninori Morimoto }; 991e426ffdSKuninori Morimoto 1003676d1ddSKuninori Morimoto #define rcar_thermal_for_each_priv(pos, common) \ 1013676d1ddSKuninori Morimoto list_for_each_entry(pos, &common->head, list) 1023676d1ddSKuninori Morimoto 103c499703eSKuninori Morimoto #define MCELSIUS(temp) ((temp) * 1000) 1043676d1ddSKuninori Morimoto #define rcar_priv_to_dev(priv) ((priv)->common->dev) 1053676d1ddSKuninori Morimoto #define rcar_has_irq_support(priv) ((priv)->common->base) 106e0a5172eSKuninori Morimoto #define rcar_id_to_shift(priv) ((priv)->id * 8) 107e0a5172eSKuninori Morimoto 108ca1e4558SKuninori Morimoto static const struct of_device_id rcar_thermal_dt_ids[] = { 1091969d9dcSYoshihiro Kaneko { 1101969d9dcSYoshihiro Kaneko .compatible = "renesas,rcar-thermal", 1111969d9dcSYoshihiro Kaneko .data = &rcar_thermal, 1121969d9dcSYoshihiro Kaneko }, 1131969d9dcSYoshihiro Kaneko { 1141969d9dcSYoshihiro Kaneko .compatible = "renesas,rcar-gen2-thermal", 1151969d9dcSYoshihiro Kaneko .data = &rcar_gen2_thermal, 1161969d9dcSYoshihiro Kaneko }, 1171969d9dcSYoshihiro Kaneko { 118b8d3d112SFabrizio Castro .compatible = "renesas,thermal-r8a774c0", 119b8d3d112SFabrizio Castro .data = &rcar_gen3_thermal, 120b8d3d112SFabrizio Castro }, 121b8d3d112SFabrizio Castro { 12292ca366eSSergei Shtylyov .compatible = "renesas,thermal-r8a77970", 12392ca366eSSergei Shtylyov .data = &rcar_gen3_thermal, 12492ca366eSSergei Shtylyov }, 12592ca366eSSergei Shtylyov { 126e36e1300SYoshihiro Kaneko .compatible = "renesas,thermal-r8a77990", 127e36e1300SYoshihiro Kaneko .data = &rcar_gen3_thermal, 128e36e1300SYoshihiro Kaneko }, 129e36e1300SYoshihiro Kaneko { 1301969d9dcSYoshihiro Kaneko .compatible = "renesas,thermal-r8a77995", 1311969d9dcSYoshihiro Kaneko .data = &rcar_gen3_thermal, 1321969d9dcSYoshihiro Kaneko }, 133ca1e4558SKuninori Morimoto {}, 134ca1e4558SKuninori Morimoto }; 135ca1e4558SKuninori Morimoto MODULE_DEVICE_TABLE(of, rcar_thermal_dt_ids); 136ca1e4558SKuninori Morimoto 1371e426ffdSKuninori Morimoto /* 1381e426ffdSKuninori Morimoto * basic functions 1391e426ffdSKuninori Morimoto */ 140e9137a58SKuninori Morimoto #define rcar_thermal_common_read(c, r) \ 141e9137a58SKuninori Morimoto _rcar_thermal_common_read(c, COMMON_ ##r) 142e9137a58SKuninori Morimoto static u32 _rcar_thermal_common_read(struct rcar_thermal_common *common, 143e9137a58SKuninori Morimoto u32 reg) 144e9137a58SKuninori Morimoto { 145e9137a58SKuninori Morimoto return ioread32(common->base + reg); 146e9137a58SKuninori Morimoto } 147e9137a58SKuninori Morimoto 148e9137a58SKuninori Morimoto #define rcar_thermal_common_write(c, r, d) \ 149e9137a58SKuninori Morimoto _rcar_thermal_common_write(c, COMMON_ ##r, d) 150e9137a58SKuninori Morimoto static void _rcar_thermal_common_write(struct rcar_thermal_common *common, 151e9137a58SKuninori Morimoto u32 reg, u32 data) 152e9137a58SKuninori Morimoto { 153e9137a58SKuninori Morimoto iowrite32(data, common->base + reg); 154e9137a58SKuninori Morimoto } 155e9137a58SKuninori Morimoto 156e9137a58SKuninori Morimoto #define rcar_thermal_common_bset(c, r, m, d) \ 157e9137a58SKuninori Morimoto _rcar_thermal_common_bset(c, COMMON_ ##r, m, d) 158e9137a58SKuninori Morimoto static void _rcar_thermal_common_bset(struct rcar_thermal_common *common, 159e9137a58SKuninori Morimoto u32 reg, u32 mask, u32 data) 160e9137a58SKuninori Morimoto { 161e9137a58SKuninori Morimoto u32 val; 162e9137a58SKuninori Morimoto 163e9137a58SKuninori Morimoto val = ioread32(common->base + reg); 164e9137a58SKuninori Morimoto val &= ~mask; 165e9137a58SKuninori Morimoto val |= (data & mask); 166e9137a58SKuninori Morimoto iowrite32(val, common->base + reg); 167e9137a58SKuninori Morimoto } 168e9137a58SKuninori Morimoto 169e9137a58SKuninori Morimoto #define rcar_thermal_read(p, r) _rcar_thermal_read(p, REG_ ##r) 170e9137a58SKuninori Morimoto static u32 _rcar_thermal_read(struct rcar_thermal_priv *priv, u32 reg) 1711e426ffdSKuninori Morimoto { 172b2bbc6a2SKuninori Morimoto return ioread32(priv->base + reg); 1731e426ffdSKuninori Morimoto } 1741e426ffdSKuninori Morimoto 175e9137a58SKuninori Morimoto #define rcar_thermal_write(p, r, d) _rcar_thermal_write(p, REG_ ##r, d) 176e9137a58SKuninori Morimoto static void _rcar_thermal_write(struct rcar_thermal_priv *priv, 1771e426ffdSKuninori Morimoto u32 reg, u32 data) 1781e426ffdSKuninori Morimoto { 1791e426ffdSKuninori Morimoto iowrite32(data, priv->base + reg); 1801e426ffdSKuninori Morimoto } 1811e426ffdSKuninori Morimoto 182e9137a58SKuninori Morimoto #define rcar_thermal_bset(p, r, m, d) _rcar_thermal_bset(p, REG_ ##r, m, d) 183e9137a58SKuninori Morimoto static void _rcar_thermal_bset(struct rcar_thermal_priv *priv, u32 reg, 1841e426ffdSKuninori Morimoto u32 mask, u32 data) 1851e426ffdSKuninori Morimoto { 1861e426ffdSKuninori Morimoto u32 val; 1871e426ffdSKuninori Morimoto 1881e426ffdSKuninori Morimoto val = ioread32(priv->base + reg); 1891e426ffdSKuninori Morimoto val &= ~mask; 1901e426ffdSKuninori Morimoto val |= (data & mask); 1911e426ffdSKuninori Morimoto iowrite32(val, priv->base + reg); 1921e426ffdSKuninori Morimoto } 1931e426ffdSKuninori Morimoto 1941e426ffdSKuninori Morimoto /* 1951e426ffdSKuninori Morimoto * zone device functions 1961e426ffdSKuninori Morimoto */ 197e0a5172eSKuninori Morimoto static int rcar_thermal_update_temp(struct rcar_thermal_priv *priv) 1981e426ffdSKuninori Morimoto { 199f8f53e18SKuninori Morimoto struct device *dev = rcar_priv_to_dev(priv); 200b03628b7SNiklas Söderlund int old, new, ctemp = -EINVAL; 201b03628b7SNiklas Söderlund unsigned int i; 2021e426ffdSKuninori Morimoto 203b2bbc6a2SKuninori Morimoto mutex_lock(&priv->lock); 204b2bbc6a2SKuninori Morimoto 2051e426ffdSKuninori Morimoto /* 206f8f53e18SKuninori Morimoto * TSC decides a value of CPTAP automatically, 207f8f53e18SKuninori Morimoto * and this is the conditions which validate interrupt. 2081e426ffdSKuninori Morimoto */ 209f8f53e18SKuninori Morimoto rcar_thermal_bset(priv, THSCR, CPCTL, CPCTL); 2101e426ffdSKuninori Morimoto 211f8f53e18SKuninori Morimoto old = ~0; 212f8f53e18SKuninori Morimoto for (i = 0; i < 128; i++) { 2131e426ffdSKuninori Morimoto /* 2141e426ffdSKuninori Morimoto * we need to wait 300us after changing comparator offset 2151e426ffdSKuninori Morimoto * to get stable temperature. 2161e426ffdSKuninori Morimoto * see "Usage Notes" on datasheet 2171e426ffdSKuninori Morimoto */ 218263c8c4cSGeert Uytterhoeven usleep_range(300, 400); 2191e426ffdSKuninori Morimoto 220f8f53e18SKuninori Morimoto new = rcar_thermal_read(priv, THSSR) & CTEMP; 221f8f53e18SKuninori Morimoto if (new == old) { 222f8f53e18SKuninori Morimoto ctemp = new; 2231e426ffdSKuninori Morimoto break; 2241e426ffdSKuninori Morimoto } 225f8f53e18SKuninori Morimoto old = new; 2261e426ffdSKuninori Morimoto } 2271e426ffdSKuninori Morimoto 228b03628b7SNiklas Söderlund if (ctemp < 0) { 229f8f53e18SKuninori Morimoto dev_err(dev, "thermal sensor was broken\n"); 230f0e68fc3SWei Yongjun goto err_out_unlock; 231f8f53e18SKuninori Morimoto } 232f8f53e18SKuninori Morimoto 233e0a5172eSKuninori Morimoto /* 234e0a5172eSKuninori Morimoto * enable IRQ 235e0a5172eSKuninori Morimoto */ 236e0a5172eSKuninori Morimoto if (rcar_has_irq_support(priv)) { 2371969d9dcSYoshihiro Kaneko if (priv->chip->has_filonoff) 238e0a5172eSKuninori Morimoto rcar_thermal_write(priv, FILONOFF, 0); 239f8f53e18SKuninori Morimoto 240e0a5172eSKuninori Morimoto /* enable Rising/Falling edge interrupt */ 241e0a5172eSKuninori Morimoto rcar_thermal_write(priv, POSNEG, 0x1); 242e0a5172eSKuninori Morimoto rcar_thermal_write(priv, INTCTRL, (((ctemp - 0) << 8) | 243e0a5172eSKuninori Morimoto ((ctemp - 1) << 0))); 244e0a5172eSKuninori Morimoto } 245e0a5172eSKuninori Morimoto 246f0e68fc3SWei Yongjun err_out_unlock: 247e0a5172eSKuninori Morimoto mutex_unlock(&priv->lock); 24857ed737fSNiklas Söderlund 249b03628b7SNiklas Söderlund return ctemp; 250e0a5172eSKuninori Morimoto } 251e0a5172eSKuninori Morimoto 2528b477ea5SKuninori Morimoto static int rcar_thermal_get_current_temp(struct rcar_thermal_priv *priv, 2538b477ea5SKuninori Morimoto int *temp) 254e0a5172eSKuninori Morimoto { 2550fa04202SNiklas Söderlund int ctemp; 256e0a5172eSKuninori Morimoto 25757ed737fSNiklas Söderlund ctemp = rcar_thermal_update_temp(priv); 25857ed737fSNiklas Söderlund if (ctemp < 0) 25957ed737fSNiklas Söderlund return ctemp; 260e0a5172eSKuninori Morimoto 261dff6d4f8SNiklas Söderlund /* Guaranteed operating range is -45C to 125C. */ 2625440c40bSKuninori Morimoto 2630fa04202SNiklas Söderlund if (priv->chip->ctemp_bands == 1) 2640fa04202SNiklas Söderlund *temp = MCELSIUS((ctemp * 5) - 65); 2650fa04202SNiklas Söderlund else if (ctemp < 24) 2660fa04202SNiklas Söderlund *temp = MCELSIUS(((ctemp * 55) - 720) / 10); 2670fa04202SNiklas Söderlund else 2680fa04202SNiklas Söderlund *temp = MCELSIUS((ctemp * 5) - 60); 2695440c40bSKuninori Morimoto 2701e426ffdSKuninori Morimoto return 0; 2711e426ffdSKuninori Morimoto } 2721e426ffdSKuninori Morimoto 2738b477ea5SKuninori Morimoto static int rcar_thermal_get_temp(struct thermal_zone_device *zone, int *temp) 2748b477ea5SKuninori Morimoto { 275*5f68d078SDaniel Lezcano struct rcar_thermal_priv *priv = thermal_zone_device_priv(zone); 2768b477ea5SKuninori Morimoto 2778b477ea5SKuninori Morimoto return rcar_thermal_get_current_temp(priv, temp); 2788b477ea5SKuninori Morimoto } 2798b477ea5SKuninori Morimoto 2800b6a3e45SDaniel Lezcano static struct thermal_zone_device_ops rcar_thermal_zone_ops = { 2812ebd4f2fSDaniel Lezcano .get_temp = rcar_thermal_get_temp, 2828b477ea5SKuninori Morimoto }; 2838b477ea5SKuninori Morimoto 2840b6a3e45SDaniel Lezcano static struct thermal_trip trips[] = { 2850b6a3e45SDaniel Lezcano { .type = THERMAL_TRIP_CRITICAL, .temperature = 90000 } 2861e426ffdSKuninori Morimoto }; 2871e426ffdSKuninori Morimoto 2881e426ffdSKuninori Morimoto /* 289e0a5172eSKuninori Morimoto * interrupt 290e0a5172eSKuninori Morimoto */ 291e0a5172eSKuninori Morimoto #define rcar_thermal_irq_enable(p) _rcar_thermal_irq_ctrl(p, 1) 292e0a5172eSKuninori Morimoto #define rcar_thermal_irq_disable(p) _rcar_thermal_irq_ctrl(p, 0) 293e0a5172eSKuninori Morimoto static void _rcar_thermal_irq_ctrl(struct rcar_thermal_priv *priv, int enable) 294e0a5172eSKuninori Morimoto { 295e0a5172eSKuninori Morimoto struct rcar_thermal_common *common = priv->common; 296e0a5172eSKuninori Morimoto unsigned long flags; 297e0a5172eSKuninori Morimoto u32 mask = 0x3 << rcar_id_to_shift(priv); /* enable Rising/Falling */ 298e0a5172eSKuninori Morimoto 299ffbcdf8aSKuninori Morimoto if (!rcar_has_irq_support(priv)) 300ffbcdf8aSKuninori Morimoto return; 301ffbcdf8aSKuninori Morimoto 302e0a5172eSKuninori Morimoto spin_lock_irqsave(&common->lock, flags); 303e0a5172eSKuninori Morimoto 304e0a5172eSKuninori Morimoto rcar_thermal_common_bset(common, INTMSK, mask, enable ? 0 : mask); 305e0a5172eSKuninori Morimoto 306e0a5172eSKuninori Morimoto spin_unlock_irqrestore(&common->lock, flags); 307e0a5172eSKuninori Morimoto } 308e0a5172eSKuninori Morimoto 309e0a5172eSKuninori Morimoto static void rcar_thermal_work(struct work_struct *work) 310e0a5172eSKuninori Morimoto { 311e0a5172eSKuninori Morimoto struct rcar_thermal_priv *priv; 312a1ade565SKuninori Morimoto int ret; 313e0a5172eSKuninori Morimoto 314e0a5172eSKuninori Morimoto priv = container_of(work, struct rcar_thermal_priv, work.work); 315e0a5172eSKuninori Morimoto 316a1ade565SKuninori Morimoto ret = rcar_thermal_update_temp(priv); 317a1ade565SKuninori Morimoto if (ret < 0) 318a1ade565SKuninori Morimoto return; 319a1ade565SKuninori Morimoto 320e0a5172eSKuninori Morimoto rcar_thermal_irq_enable(priv); 3219477165eSPatrick Titiano 3227617e771SNiklas Söderlund thermal_zone_device_update(priv->zone, THERMAL_EVENT_UNSPECIFIED); 323e0a5172eSKuninori Morimoto } 324e0a5172eSKuninori Morimoto 325e0a5172eSKuninori Morimoto static u32 rcar_thermal_had_changed(struct rcar_thermal_priv *priv, u32 status) 326e0a5172eSKuninori Morimoto { 327e0a5172eSKuninori Morimoto struct device *dev = rcar_priv_to_dev(priv); 328e0a5172eSKuninori Morimoto 329e0a5172eSKuninori Morimoto status = (status >> rcar_id_to_shift(priv)) & 0x3; 330e0a5172eSKuninori Morimoto 331206c0cbaSPatrick Titiano if (status) { 332e0a5172eSKuninori Morimoto dev_dbg(dev, "thermal%d %s%s\n", 333e0a5172eSKuninori Morimoto priv->id, 334e0a5172eSKuninori Morimoto (status & 0x2) ? "Rising " : "", 335e0a5172eSKuninori Morimoto (status & 0x1) ? "Falling" : ""); 336e0a5172eSKuninori Morimoto } 337e0a5172eSKuninori Morimoto 338e0a5172eSKuninori Morimoto return status; 339e0a5172eSKuninori Morimoto } 340e0a5172eSKuninori Morimoto 341e0a5172eSKuninori Morimoto static irqreturn_t rcar_thermal_irq(int irq, void *data) 342e0a5172eSKuninori Morimoto { 343e0a5172eSKuninori Morimoto struct rcar_thermal_common *common = data; 344e0a5172eSKuninori Morimoto struct rcar_thermal_priv *priv; 345e0a5172eSKuninori Morimoto u32 status, mask; 346e0a5172eSKuninori Morimoto 3474eb7d0cdSTian Tao spin_lock(&common->lock); 348e0a5172eSKuninori Morimoto 349e0a5172eSKuninori Morimoto mask = rcar_thermal_common_read(common, INTMSK); 350e0a5172eSKuninori Morimoto status = rcar_thermal_common_read(common, STR); 351e0a5172eSKuninori Morimoto rcar_thermal_common_write(common, STR, 0x000F0F0F & mask); 352e0a5172eSKuninori Morimoto 3534eb7d0cdSTian Tao spin_unlock(&common->lock); 354e0a5172eSKuninori Morimoto 355e0a5172eSKuninori Morimoto status = status & ~mask; 356e0a5172eSKuninori Morimoto 357e0a5172eSKuninori Morimoto /* 358e0a5172eSKuninori Morimoto * check the status 359e0a5172eSKuninori Morimoto */ 360e0a5172eSKuninori Morimoto rcar_thermal_for_each_priv(priv, common) { 361e0a5172eSKuninori Morimoto if (rcar_thermal_had_changed(priv, status)) { 362e0a5172eSKuninori Morimoto rcar_thermal_irq_disable(priv); 3633a313862SGeert Uytterhoeven queue_delayed_work(system_freezable_wq, &priv->work, 364e0a5172eSKuninori Morimoto msecs_to_jiffies(300)); 365e0a5172eSKuninori Morimoto } 366e0a5172eSKuninori Morimoto } 367e0a5172eSKuninori Morimoto 368e0a5172eSKuninori Morimoto return IRQ_HANDLED; 369e0a5172eSKuninori Morimoto } 370e0a5172eSKuninori Morimoto 371e0a5172eSKuninori Morimoto /* 3721e426ffdSKuninori Morimoto * platform functions 3731e426ffdSKuninori Morimoto */ 37484f0e490SKuninori Morimoto static int rcar_thermal_remove(struct platform_device *pdev) 37584f0e490SKuninori Morimoto { 37684f0e490SKuninori Morimoto struct rcar_thermal_common *common = platform_get_drvdata(pdev); 37784f0e490SKuninori Morimoto struct device *dev = &pdev->dev; 37884f0e490SKuninori Morimoto struct rcar_thermal_priv *priv; 37984f0e490SKuninori Morimoto 38084f0e490SKuninori Morimoto rcar_thermal_for_each_priv(priv, common) { 38184f0e490SKuninori Morimoto rcar_thermal_irq_disable(priv); 382697ee786SGeert Uytterhoeven cancel_delayed_work_sync(&priv->work); 3831969d9dcSYoshihiro Kaneko if (priv->chip->use_of_thermal) 38464a411e8SKuninori Morimoto thermal_remove_hwmon_sysfs(priv->zone); 385d4b23c5cSBui Duc Phuc else 38684f0e490SKuninori Morimoto thermal_zone_device_unregister(priv->zone); 38784f0e490SKuninori Morimoto } 38884f0e490SKuninori Morimoto 38984f0e490SKuninori Morimoto pm_runtime_put(dev); 39084f0e490SKuninori Morimoto pm_runtime_disable(dev); 39184f0e490SKuninori Morimoto 39284f0e490SKuninori Morimoto return 0; 39384f0e490SKuninori Morimoto } 39484f0e490SKuninori Morimoto 3951e426ffdSKuninori Morimoto static int rcar_thermal_probe(struct platform_device *pdev) 3961e426ffdSKuninori Morimoto { 3973676d1ddSKuninori Morimoto struct rcar_thermal_common *common; 3981e426ffdSKuninori Morimoto struct rcar_thermal_priv *priv; 3993676d1ddSKuninori Morimoto struct device *dev = &pdev->dev; 4003277e022SLad Prabhakar struct resource *res; 4011969d9dcSYoshihiro Kaneko const struct rcar_thermal_chip *chip = of_device_get_match_data(dev); 4023676d1ddSKuninori Morimoto int mres = 0; 4033676d1ddSKuninori Morimoto int i; 404fb84d990SDevendra Naga int ret = -ENODEV; 405e0a5172eSKuninori Morimoto int idle = IDLE_INTERVAL; 40611313746SYoshihiro Shimoda u32 enr_bits = 0; 4071e426ffdSKuninori Morimoto 4083676d1ddSKuninori Morimoto common = devm_kzalloc(dev, sizeof(*common), GFP_KERNEL); 409b0a60d88SJingoo Han if (!common) 4103676d1ddSKuninori Morimoto return -ENOMEM; 4113676d1ddSKuninori Morimoto 41284f0e490SKuninori Morimoto platform_set_drvdata(pdev, common); 41384f0e490SKuninori Morimoto 4143676d1ddSKuninori Morimoto INIT_LIST_HEAD(&common->head); 415e0a5172eSKuninori Morimoto spin_lock_init(&common->lock); 4163676d1ddSKuninori Morimoto common->dev = dev; 4173676d1ddSKuninori Morimoto 41851d45d25SKuninori Morimoto pm_runtime_enable(dev); 41951d45d25SKuninori Morimoto pm_runtime_get_sync(dev); 42051d45d25SKuninori Morimoto 4211969d9dcSYoshihiro Kaneko for (i = 0; i < chip->nirqs; i++) { 4223277e022SLad Prabhakar int irq; 4233277e022SLad Prabhakar 4243277e022SLad Prabhakar ret = platform_get_irq_optional(pdev, i); 4253277e022SLad Prabhakar if (ret < 0 && ret != -ENXIO) 4263277e022SLad Prabhakar goto error_unregister; 4273277e022SLad Prabhakar if (ret > 0) 4283277e022SLad Prabhakar irq = ret; 4293277e022SLad Prabhakar else 4303277e022SLad Prabhakar break; 4313277e022SLad Prabhakar 4321969d9dcSYoshihiro Kaneko if (!common->base) { 4333676d1ddSKuninori Morimoto /* 4343676d1ddSKuninori Morimoto * platform has IRQ support. 435ee853addSGeert Uytterhoeven * Then, driver uses common registers 4363676d1ddSKuninori Morimoto * rcar_has_irq_support() will be enabled 4373676d1ddSKuninori Morimoto */ 4381969d9dcSYoshihiro Kaneko res = platform_get_resource(pdev, IORESOURCE_MEM, 4391969d9dcSYoshihiro Kaneko mres++); 4405095526fSSachin Kamat common->base = devm_ioremap_resource(dev, res); 44139056e8aSNiklas Söderlund if (IS_ERR(common->base)) { 44239056e8aSNiklas Söderlund ret = PTR_ERR(common->base); 44339056e8aSNiklas Söderlund goto error_unregister; 44439056e8aSNiklas Söderlund } 445e0a5172eSKuninori Morimoto 4466fe495e0SGeert Uytterhoeven idle = 0; /* polling delay is not needed */ 4473676d1ddSKuninori Morimoto } 4483676d1ddSKuninori Morimoto 4493277e022SLad Prabhakar ret = devm_request_irq(dev, irq, rcar_thermal_irq, 4501969d9dcSYoshihiro Kaneko IRQF_SHARED, dev_name(dev), common); 4511969d9dcSYoshihiro Kaneko if (ret) { 4521969d9dcSYoshihiro Kaneko dev_err(dev, "irq request failed\n "); 4531969d9dcSYoshihiro Kaneko goto error_unregister; 4541969d9dcSYoshihiro Kaneko } 4551969d9dcSYoshihiro Kaneko 4561969d9dcSYoshihiro Kaneko /* update ENR bits */ 4571969d9dcSYoshihiro Kaneko if (chip->irq_per_ch) 4581969d9dcSYoshihiro Kaneko enr_bits |= 1 << i; 4591969d9dcSYoshihiro Kaneko } 4601969d9dcSYoshihiro Kaneko 4613676d1ddSKuninori Morimoto for (i = 0;; i++) { 4623676d1ddSKuninori Morimoto res = platform_get_resource(pdev, IORESOURCE_MEM, mres++); 4633676d1ddSKuninori Morimoto if (!res) 4643676d1ddSKuninori Morimoto break; 4653676d1ddSKuninori Morimoto 4663676d1ddSKuninori Morimoto priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); 4671e426ffdSKuninori Morimoto if (!priv) { 4681dc20828SKuninori Morimoto ret = -ENOMEM; 4691dc20828SKuninori Morimoto goto error_unregister; 4701e426ffdSKuninori Morimoto } 4711e426ffdSKuninori Morimoto 4725095526fSSachin Kamat priv->base = devm_ioremap_resource(dev, res); 4731dc20828SKuninori Morimoto if (IS_ERR(priv->base)) { 4741dc20828SKuninori Morimoto ret = PTR_ERR(priv->base); 4751dc20828SKuninori Morimoto goto error_unregister; 4761dc20828SKuninori Morimoto } 4771e426ffdSKuninori Morimoto 4783676d1ddSKuninori Morimoto priv->common = common; 479e0a5172eSKuninori Morimoto priv->id = i; 4801969d9dcSYoshihiro Kaneko priv->chip = chip; 4813676d1ddSKuninori Morimoto mutex_init(&priv->lock); 4823676d1ddSKuninori Morimoto INIT_LIST_HEAD(&priv->list); 483e0a5172eSKuninori Morimoto INIT_DELAYED_WORK(&priv->work, rcar_thermal_work); 484a1ade565SKuninori Morimoto ret = rcar_thermal_update_temp(priv); 485a1ade565SKuninori Morimoto if (ret < 0) 486a1ade565SKuninori Morimoto goto error_unregister; 4873676d1ddSKuninori Morimoto 488392573b7SGeert Uytterhoeven if (chip->use_of_thermal) { 4892ebd4f2fSDaniel Lezcano priv->zone = devm_thermal_of_zone_register( 4908b477ea5SKuninori Morimoto dev, i, priv, 4910b6a3e45SDaniel Lezcano &rcar_thermal_zone_ops); 492392573b7SGeert Uytterhoeven } else { 4930b6a3e45SDaniel Lezcano priv->zone = thermal_zone_device_register_with_trips( 4940b6a3e45SDaniel Lezcano "rcar_thermal", trips, ARRAY_SIZE(trips), 0, priv, 495d2a73e22Skuninori.morimoto.gx@renesas.com &rcar_thermal_zone_ops, NULL, 0, 496e0a5172eSKuninori Morimoto idle); 497bbcf90c0SAndrzej Pietrasiewicz 498bbcf90c0SAndrzej Pietrasiewicz ret = thermal_zone_device_enable(priv->zone); 499bbcf90c0SAndrzej Pietrasiewicz if (ret) { 500bbcf90c0SAndrzej Pietrasiewicz thermal_zone_device_unregister(priv->zone); 501bbcf90c0SAndrzej Pietrasiewicz priv->zone = ERR_PTR(ret); 502bbcf90c0SAndrzej Pietrasiewicz } 503bbcf90c0SAndrzej Pietrasiewicz } 5043676d1ddSKuninori Morimoto if (IS_ERR(priv->zone)) { 5053676d1ddSKuninori Morimoto dev_err(dev, "can't register thermal zone\n"); 506fb84d990SDevendra Naga ret = PTR_ERR(priv->zone); 50787260d3fSDirk Behme priv->zone = NULL; 5083676d1ddSKuninori Morimoto goto error_unregister; 5091e426ffdSKuninori Morimoto } 5101e426ffdSKuninori Morimoto 5111969d9dcSYoshihiro Kaneko if (chip->use_of_thermal) { 51264a411e8SKuninori Morimoto /* 51364a411e8SKuninori Morimoto * thermal_zone doesn't enable hwmon as default, 51464a411e8SKuninori Morimoto * but, enable it here to keep compatible 51564a411e8SKuninori Morimoto */ 51664a411e8SKuninori Morimoto priv->zone->tzp->no_hwmon = false; 51764a411e8SKuninori Morimoto ret = thermal_add_hwmon_sysfs(priv->zone); 51864a411e8SKuninori Morimoto if (ret) 51964a411e8SKuninori Morimoto goto error_unregister; 52064a411e8SKuninori Morimoto } 52164a411e8SKuninori Morimoto 522e0a5172eSKuninori Morimoto rcar_thermal_irq_enable(priv); 5231dc20828SKuninori Morimoto 5241dc20828SKuninori Morimoto list_move_tail(&priv->list, &common->head); 52511313746SYoshihiro Shimoda 52611313746SYoshihiro Shimoda /* update ENR bits */ 5271969d9dcSYoshihiro Kaneko if (!chip->irq_per_ch) 52811313746SYoshihiro Shimoda enr_bits |= 3 << (i * 8); 5293676d1ddSKuninori Morimoto } 5301e426ffdSKuninori Morimoto 531542cdf40SSimon Horman if (common->base && enr_bits) 53211313746SYoshihiro Shimoda rcar_thermal_common_write(common, ENR, enr_bits); 53311313746SYoshihiro Shimoda 5343db46c93SLaurent Pinchart dev_info(dev, "%d sensor probed\n", i); 5351e426ffdSKuninori Morimoto 5361e426ffdSKuninori Morimoto return 0; 5373676d1ddSKuninori Morimoto 5383676d1ddSKuninori Morimoto error_unregister: 53984f0e490SKuninori Morimoto rcar_thermal_remove(pdev); 54051d45d25SKuninori Morimoto 541fb84d990SDevendra Naga return ret; 5421e426ffdSKuninori Morimoto } 5431e426ffdSKuninori Morimoto 5441969d9dcSYoshihiro Kaneko #ifdef CONFIG_PM_SLEEP 5451969d9dcSYoshihiro Kaneko static int rcar_thermal_suspend(struct device *dev) 5461969d9dcSYoshihiro Kaneko { 5471969d9dcSYoshihiro Kaneko struct rcar_thermal_common *common = dev_get_drvdata(dev); 5481969d9dcSYoshihiro Kaneko struct rcar_thermal_priv *priv = list_first_entry(&common->head, 5491969d9dcSYoshihiro Kaneko typeof(*priv), list); 5501969d9dcSYoshihiro Kaneko 5511969d9dcSYoshihiro Kaneko if (priv->chip->needs_suspend_resume) { 5521969d9dcSYoshihiro Kaneko rcar_thermal_common_write(common, ENR, 0); 5531969d9dcSYoshihiro Kaneko rcar_thermal_irq_disable(priv); 5541969d9dcSYoshihiro Kaneko rcar_thermal_bset(priv, THSCR, CPCTL, 0); 5551969d9dcSYoshihiro Kaneko } 5561969d9dcSYoshihiro Kaneko 5571969d9dcSYoshihiro Kaneko return 0; 5581969d9dcSYoshihiro Kaneko } 5591969d9dcSYoshihiro Kaneko 5601969d9dcSYoshihiro Kaneko static int rcar_thermal_resume(struct device *dev) 5611969d9dcSYoshihiro Kaneko { 5621969d9dcSYoshihiro Kaneko struct rcar_thermal_common *common = dev_get_drvdata(dev); 5631969d9dcSYoshihiro Kaneko struct rcar_thermal_priv *priv = list_first_entry(&common->head, 5641969d9dcSYoshihiro Kaneko typeof(*priv), list); 5651969d9dcSYoshihiro Kaneko int ret; 5661969d9dcSYoshihiro Kaneko 5671969d9dcSYoshihiro Kaneko if (priv->chip->needs_suspend_resume) { 5681969d9dcSYoshihiro Kaneko ret = rcar_thermal_update_temp(priv); 5691969d9dcSYoshihiro Kaneko if (ret < 0) 5701969d9dcSYoshihiro Kaneko return ret; 5711969d9dcSYoshihiro Kaneko rcar_thermal_irq_enable(priv); 5721969d9dcSYoshihiro Kaneko rcar_thermal_common_write(common, ENR, 0x03); 5731969d9dcSYoshihiro Kaneko } 5741969d9dcSYoshihiro Kaneko 5751969d9dcSYoshihiro Kaneko return 0; 5761969d9dcSYoshihiro Kaneko } 5771969d9dcSYoshihiro Kaneko #endif 5781969d9dcSYoshihiro Kaneko 5791969d9dcSYoshihiro Kaneko static SIMPLE_DEV_PM_OPS(rcar_thermal_pm_ops, rcar_thermal_suspend, 5801969d9dcSYoshihiro Kaneko rcar_thermal_resume); 5811969d9dcSYoshihiro Kaneko 5821e426ffdSKuninori Morimoto static struct platform_driver rcar_thermal_driver = { 5831e426ffdSKuninori Morimoto .driver = { 5841e426ffdSKuninori Morimoto .name = "rcar_thermal", 5851969d9dcSYoshihiro Kaneko .pm = &rcar_thermal_pm_ops, 58676cc1887SKuninori Morimoto .of_match_table = rcar_thermal_dt_ids, 5871e426ffdSKuninori Morimoto }, 5881e426ffdSKuninori Morimoto .probe = rcar_thermal_probe, 5891e426ffdSKuninori Morimoto .remove = rcar_thermal_remove, 5901e426ffdSKuninori Morimoto }; 5911e426ffdSKuninori Morimoto module_platform_driver(rcar_thermal_driver); 5921e426ffdSKuninori Morimoto 593c9545790SKuninori Morimoto MODULE_LICENSE("GPL v2"); 5941e426ffdSKuninori Morimoto MODULE_DESCRIPTION("R-Car THS/TSC thermal sensor driver"); 5951e426ffdSKuninori Morimoto MODULE_AUTHOR("Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>"); 596