| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Andrey Smirnov | 618 | 37.09% | 10 | 45.45% |
| Jia Hongtao | 535 | 32.11% | 1 | 4.55% |
| Yuantian Tang | 336 | 20.17% | 3 | 13.64% |
| Anson Huang | 166 | 9.96% | 6 | 27.27% |
| Daniel Lezcano | 8 | 0.48% | 1 | 4.55% |
| Fabio Estevam | 3 | 0.18% | 1 | 4.55% |
| Total | 1666 | 22 |
// SPDX-License-Identifier: GPL-2.0 // // Copyright 2016 Freescale Semiconductor, Inc. #include <linux/clk.h> #include <linux/err.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include <linux/sizes.h> #include <linux/thermal.h> #include <linux/units.h> #include "thermal_core.h" #include "thermal_hwmon.h" #define SITES_MAX 16 #define TMR_DISABLE 0x0 #define TMR_ME 0x80000000 #define TMR_ALPF 0x0c000000 #define TMR_ALPF_V2 0x03000000 #define TMTMIR_DEFAULT 0x0000000f #define TIER_DISABLE 0x0 #define TEUMR0_V2 0x51009c00 #define TMSARA_V2 0xe #define TMU_VER1 0x1 #define TMU_VER2 0x2 #define REGS_TMR 0x000 /* Mode Register */ #define TMR_DISABLE 0x0 #define TMR_ME 0x80000000 #define TMR_ALPF 0x0c000000 #define TMR_MSITE_ALL GENMASK(15, 0) #define REGS_TMTMIR 0x008 /* Temperature measurement interval Register */ #define TMTMIR_DEFAULT 0x0000000f #define REGS_V2_TMSR 0x008 /* monitor site register */ #define REGS_V2_TMTMIR 0x00c /* Temperature measurement interval Register */ #define REGS_TIER 0x020 /* Interrupt Enable Register */ #define TIER_DISABLE 0x0 #define REGS_TTCFGR 0x080 /* Temperature Configuration Register */ #define REGS_TSCFGR 0x084 /* Sensor Configuration Register */ #define REGS_TRITSR(n) (0x100 + 16 * (n)) /* Immediate Temperature * Site Register */ #define TRITSR_V BIT(31) #define REGS_V2_TMSAR(n) (0x304 + 16 * (n)) /* TMU monitoring * site adjustment register */ #define REGS_TTRnCR(n) (0xf10 + 4 * (n)) /* Temperature Range n * Control Register */ #define REGS_IPBRR(n) (0xbf8 + 4 * (n)) /* IP Block Revision * Register n */ #define REGS_V2_TEUMR(n) (0xf00 + 4 * (n)) /* * Thermal zone data */ struct qoriq_sensor { int id; }; struct qoriq_tmu_data { int ver; struct regmap *regmap; struct clk *clk; struct qoriq_sensor sensor[SITES_MAX]; }; static struct qoriq_tmu_data *qoriq_sensor_to_data(struct qoriq_sensor *s) { return container_of(s, struct qoriq_tmu_data, sensor[s->id]); } static int tmu_get_temp(struct thermal_zone_device *tz, int *temp) { struct qoriq_sensor *qsensor = tz->devdata; struct qoriq_tmu_data *qdata = qoriq_sensor_to_data(qsensor); u32 val; /* * REGS_TRITSR(id) has the following layout: * * For TMU Rev1: * 31 ... 7 6 5 4 3 2 1 0 * V TEMP * * Where V bit signifies if the measurement is ready and is * within sensor range. TEMP is an 8 bit value representing * temperature in Celsius. * For TMU Rev2: * 31 ... 8 7 6 5 4 3 2 1 0 * V TEMP * * Where V bit signifies if the measurement is ready and is * within sensor range. TEMP is an 9 bit value representing * temperature in KelVin. */ if (regmap_read_poll_timeout(qdata->regmap, REGS_TRITSR(qsensor->id), val, val & TRITSR_V, USEC_PER_MSEC, 10 * USEC_PER_MSEC)) return -ENODATA; if (qdata->ver == TMU_VER1) *temp = (val & GENMASK(7, 0)) * MILLIDEGREE_PER_DEGREE; else *temp = kelvin_to_millicelsius(val & GENMASK(8, 0)); return 0; } static const struct thermal_zone_device_ops tmu_tz_ops = { .get_temp = tmu_get_temp, }; static int qoriq_tmu_register_tmu_zone(struct device *dev, struct qoriq_tmu_data *qdata) { int id; if (qdata->ver == TMU_VER1) { regmap_write(qdata->regmap, REGS_TMR, TMR_MSITE_ALL | TMR_ME | TMR_ALPF); } else { regmap_write(qdata->regmap, REGS_V2_TMSR, TMR_MSITE_ALL); regmap_write(qdata->regmap, REGS_TMR, TMR_ME | TMR_ALPF_V2); } for (id = 0; id < SITES_MAX; id++) { struct thermal_zone_device *tzd; struct qoriq_sensor *sensor = &qdata->sensor[id]; int ret; sensor->id = id; tzd = devm_thermal_of_zone_register(dev, id, sensor, &tmu_tz_ops); ret = PTR_ERR_OR_ZERO(tzd); if (ret) { if (ret == -ENODEV) continue; regmap_write(qdata->regmap, REGS_TMR, TMR_DISABLE); return ret; } if (devm_thermal_add_hwmon_sysfs(tzd)) dev_warn(dev, "Failed to add hwmon sysfs attributes\n"); } return 0; } static int qoriq_tmu_calibration(struct device *dev, struct qoriq_tmu_data *data) { int i, val, len; u32 range[4]; const u32 *calibration; struct device_node *np = dev->of_node; len = of_property_count_u32_elems(np, "fsl,tmu-range"); if (len < 0 || len > 4) { dev_err(dev, "invalid range data.\n"); return len; } val = of_property_read_u32_array(np, "fsl,tmu-range", range, len); if (val != 0) { dev_err(dev, "failed to read range data.\n"); return val; } /* Init temperature range registers */ for (i = 0; i < len; i++) regmap_write(data->regmap, REGS_TTRnCR(i), range[i]); calibration = of_get_property(np, "fsl,tmu-calibration", &len); if (calibration == NULL || len % 8) { dev_err(dev, "invalid calibration data.\n"); return -ENODEV; } for (i = 0; i < len; i += 8, calibration += 2) { val = of_read_number(calibration, 1); regmap_write(data->regmap, REGS_TTCFGR, val); val = of_read_number(calibration + 1, 1); regmap_write(data->regmap, REGS_TSCFGR, val); } return 0; } static void qoriq_tmu_init_device(struct qoriq_tmu_data *data) { int i; /* Disable interrupt, using polling instead */ regmap_write(data->regmap, REGS_TIER, TIER_DISABLE); /* Set update_interval */ if (data->ver == TMU_VER1) { regmap_write(data->regmap, REGS_TMTMIR, TMTMIR_DEFAULT); } else { regmap_write(data->regmap, REGS_V2_TMTMIR, TMTMIR_DEFAULT); regmap_write(data->regmap, REGS_V2_TEUMR(0), TEUMR0_V2); for (i = 0; i < SITES_MAX; i++) regmap_write(data->regmap, REGS_V2_TMSAR(i), TMSARA_V2); } /* Disable monitoring */ regmap_write(data->regmap, REGS_TMR, TMR_DISABLE); } static const struct regmap_range qoriq_yes_ranges[] = { regmap_reg_range(REGS_TMR, REGS_TSCFGR), regmap_reg_range(REGS_TTRnCR(0), REGS_TTRnCR(3)), regmap_reg_range(REGS_V2_TEUMR(0), REGS_V2_TEUMR(2)), regmap_reg_range(REGS_V2_TMSAR(0), REGS_V2_TMSAR(15)), regmap_reg_range(REGS_IPBRR(0), REGS_IPBRR(1)), /* Read only registers below */ regmap_reg_range(REGS_TRITSR(0), REGS_TRITSR(15)), }; static const struct regmap_access_table qoriq_wr_table = { .yes_ranges = qoriq_yes_ranges, .n_yes_ranges = ARRAY_SIZE(qoriq_yes_ranges) - 1, }; static const struct regmap_access_table qoriq_rd_table = { .yes_ranges = qoriq_yes_ranges, .n_yes_ranges = ARRAY_SIZE(qoriq_yes_ranges), }; static void qoriq_tmu_action(void *p) { struct qoriq_tmu_data *data = p; regmap_write(data->regmap, REGS_TMR, TMR_DISABLE); clk_disable_unprepare(data->clk); } static int qoriq_tmu_probe(struct platform_device *pdev) { int ret; u32 ver; struct qoriq_tmu_data *data; struct device_node *np = pdev->dev.of_node; struct device *dev = &pdev->dev; const bool little_endian = of_property_read_bool(np, "little-endian"); const enum regmap_endian format_endian = little_endian ? REGMAP_ENDIAN_LITTLE : REGMAP_ENDIAN_BIG; const struct regmap_config regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .rd_table = &qoriq_rd_table, .wr_table = &qoriq_wr_table, .val_format_endian = format_endian, .max_register = SZ_4K, }; void __iomem *base; data = devm_kzalloc(dev, sizeof(struct qoriq_tmu_data), GFP_KERNEL); if (!data) return -ENOMEM; base = devm_platform_ioremap_resource(pdev, 0); ret = PTR_ERR_OR_ZERO(base); if (ret) { dev_err(dev, "Failed to get memory region\n"); return ret; } data->regmap = devm_regmap_init_mmio(dev, base, ®map_config); ret = PTR_ERR_OR_ZERO(data->regmap); if (ret) { dev_err(dev, "Failed to init regmap (%d)\n", ret); return ret; } data->clk = devm_clk_get_optional(dev, NULL); if (IS_ERR(data->clk)) return PTR_ERR(data->clk); ret = clk_prepare_enable(data->clk); if (ret) { dev_err(dev, "Failed to enable clock\n"); return ret; } ret = devm_add_action_or_reset(dev, qoriq_tmu_action, data); if (ret) return ret; /* version register offset at: 0xbf8 on both v1 and v2 */ ret = regmap_read(data->regmap, REGS_IPBRR(0), &ver); if (ret) { dev_err(&pdev->dev, "Failed to read IP block version\n"); return ret; } data->ver = (ver >> 8) & 0xff; qoriq_tmu_init_device(data); /* TMU initialization */ ret = qoriq_tmu_calibration(dev, data); /* TMU calibration */ if (ret < 0) return ret; ret = qoriq_tmu_register_tmu_zone(dev, data); if (ret < 0) { dev_err(dev, "Failed to register sensors\n"); return ret; } platform_set_drvdata(pdev, data); return 0; } static int __maybe_unused qoriq_tmu_suspend(struct device *dev) { struct qoriq_tmu_data *data = dev_get_drvdata(dev); int ret; ret = regmap_update_bits(data->regmap, REGS_TMR, TMR_ME, 0); if (ret) return ret; clk_disable_unprepare(data->clk); return 0; } static int __maybe_unused qoriq_tmu_resume(struct device *dev) { int ret; struct qoriq_tmu_data *data = dev_get_drvdata(dev); ret = clk_prepare_enable(data->clk); if (ret) return ret; /* Enable monitoring */ return regmap_update_bits(data->regmap, REGS_TMR, TMR_ME, TMR_ME); } static SIMPLE_DEV_PM_OPS(qoriq_tmu_pm_ops, qoriq_tmu_suspend, qoriq_tmu_resume); static const struct of_device_id qoriq_tmu_match[] = { { .compatible = "fsl,qoriq-tmu", }, { .compatible = "fsl,imx8mq-tmu", }, {}, }; MODULE_DEVICE_TABLE(of, qoriq_tmu_match); static struct platform_driver qoriq_tmu = { .driver = { .name = "qoriq_thermal", .pm = &qoriq_tmu_pm_ops, .of_match_table = qoriq_tmu_match, }, .probe = qoriq_tmu_probe, }; module_platform_driver(qoriq_tmu); MODULE_AUTHOR("Jia Hongtao <hongtao.jia@nxp.com>"); MODULE_DESCRIPTION("QorIQ Thermal Monitoring Unit driver"); MODULE_LICENSE("GPL v2");
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