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Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Conor Dooley , Alim Akhtar , Sam Protsenko , Anand Moon , Marek Szyprowski Subject: [PATCH v4 6/7] drivers/thermal/exynos: add initial Exynos850 support Date: Wed, 11 Sep 2024 14:11:29 +0200 Message-ID: <20240911121136.1120026-7-m.majewski2@samsung.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20240911121136.1120026-1-m.majewski2@samsung.com> Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFrrCKsWRmVeSWpSXmKPExsWy7djPc7p8nQ/TDLruGFs8mLeNzeL7lutM Fmv2nmOymPdZ1mL+kXOsFufPb2C32PT4GqvF5V1z2Cw+9x5htJhxfh+TxbqNt9gtFja1sFtM PDaZ2WLtkbvsFnO/TGW2+L9nB7vFk4d9bBbP+/YxOQh5rJm3htFj56y77B6L97xk8ti0qpPN 4861PWwem5fUe/RtWcXo8XmTXABHFJdNSmpOZllqkb5dAldG86Q3bAWfoitOzFrL2MB40beL kZNDQsBE4kz7RNYuRi4OIYEVjBLN/2ezQThfGCWubD3NDOF8ZpT427ILyOEAa3k/xxwivpxR ov3tfCYIp5VJomvnBxaQuWwCBhIP3ixjB0mICCxmlGj88Q5sCbPARBaJ9W+6GUGqhAX8JW5N bQKzWQRUJdZvuwbWzStgJ9HZ+ZQN4kJ5iYtrnoPZnAL2Et9fL2eEqBGUODnzCVg9M1BN89bZ YLdKCMznlGhs7oBqdpHYCgxRCFtY4tXxLVC2jMT/nSB3g9j5EjM2v2eB+K1C4u5BLwjTWuLj GbCPmQU0Jdbv0ocodpRoXHgZqphP4sZbQYgD+CQmbZsODR9eiY42IYhqVYnjeyYxQ9jSEk9a bkOt9JB4vXEW0wRGxVlIXpmF5JVZCHsXMDKvYhRPLS3OTU8tNsxLLdcrTswtLs1L10vOz93E CEx4p/8d/7SDce6rj3qHGJk4GA8xSnAwK4nw9tvdSxPiTUmsrEotyo8vKs1JLT7EKM3BoiTO q5oinyokkJ5YkpqdmlqQWgSTZeLglGpgknox45bHF9XKpGuyc79IlHR7y+aLCKpHbivf5eVf 90J3nfzkq9FXOF7LWWUZvCvw4TlazL345dnLHzLz/69czyqRujZCTXTFy7MyWg9d//mmvxT5 MVWlfFoj0xvPAO7mIwc3M6z0qDcWWXDlhHTuwv+nD1d4eT5ee1PJyb0qylpMfs6DB01r38Yc LJUJ+PZogTWDtzfPxWrt7bHSv/Yl+W6dHfLqmCiXTOgB5tlX/hdFyk2zUY2cIvDa45+j6vLp zz1SgpRuft1dOPWPTJTkmwm/L0ociGp/+37JfsV5P26e23G2iO3bxCar2wqsx54tqEi8smux bfPWI0ztzydqHin/+l03cKmk2olE4Sc/kpRYijMSDbWYi4oTAZ+Y7RfnAwAA X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFjrMIsWRmVeSWpSXmKPExsVy+t/xu7p8nQ/TDJoeMVo8mLeNzeL7lutM Fmv2nmOymPdZ1mL+kXOsFufPb2C32PT4GqvF5V1z2Cw+9x5htJhxfh+TxbqNt9gtFja1sFtM PDaZ2WLtkbvsFnO/TGW2+L9nB7vFk4d9bBbP+/YxOQh5rJm3htFj56y77B6L97xk8ti0qpPN 4861PWwem5fUe/RtWcXo8XmTXABHlJ5NUX5pSapCRn5xia1StKGFkZ6hpYWekYmlnqGxeayV kamSvp1NSmpOZllqkb5dgl5G86Q3bAWfoitOzFrL2MB40beLkYNDQsBE4v0c8y5GTg4hgaWM Ej+Xs4DYEgLSEoe/TGGHsIUl/lzrYuti5AKqaWaSaNjfDZZgEzCQePBmGZgtIrCcUWJzuwdI EbPAXBaJzterwRLCAr4Sa6acArNZBFQl1m+7BraBV8BOorPzKRvEBnmJi2ueg9mcAvYS318v Z4S4yE7i48aTrBD1ghInZz4B62UGqm/eOpt5AqPALCSpWUhSCxiZVjGKpJYW56bnFhvpFSfm Fpfmpesl5+duYgTG5rZjP7fsYFz56qPeIUYmDsZDjBIczEoivP1299KEeFMSK6tSi/Lji0pz UosPMZoC3T2RWUo0OR+YHPJK4g3NDEwNTcwsDUwtzYyVxHnZrpxPExJITyxJzU5NLUgtgulj 4uCUamCavWuhk9zBPtfpOncnmBrW754S/lltQ5FJwL/1H3r9vkeXXUh3mKm4w06wboKgh49M WMNrbeZjTDV9mqnxeySqCj+K9HgYXPh+RXjGoY+JKekKobYdG9y//DD82TjxfqLWQy5fRjcD zj9vzweyBZ2PuM28yXnz563ruuffrD8r2+ct9e9hpL3vk88zD7XmPF9vyyN9OCFh+xGVQo+/ k0LEWdbfXp+X+Dmw6JWpBIdC/hm2kwVtsgu/tjfXev68/kN70rev5747JZ0MWWwRsvRvS0aH +bkX+55XFdXkv/NP4LZtn9fku2xat8qUeWHztA8ttmHV+bbGV5sz61BkC/OKpaXfCvfMb0vY t/33Y1YlluKMREMt5qLiRACJPi8EVgMAAA== X-CMS-MailID: 20240911121158eucas1p2ab3ec5b5b59351af22c5740e02236b16 X-Msg-Generator: CA X-RootMTR: 20240911121158eucas1p2ab3ec5b5b59351af22c5740e02236b16 X-EPHeader: CA CMS-TYPE: 201P X-CMS-RootMailID: 20240911121158eucas1p2ab3ec5b5b59351af22c5740e02236b16 References: <20240911121136.1120026-1-m.majewski2@samsung.com> This is loosely adapted from an implementation available at https://gitlab.com/Linaro/96boards/e850-96/kernel/-/blob/android-exynos-4.14-linaro/drivers/thermal/samsung/exynos_tmu.c Some differences from that implementation: - unlike that implementation, we do not use the ACPM mechanism, instead we just access the registers, like we do for other SoCs, - the SoC is supposed to support multiple sensors inside one unit. The vendor implementation uses one kernel device per sensor, we would probably prefer to have one device for all sensors, have #thermal-sensor-cells = <1> and so on. We implemented this, but we could not get the extra sensors to work on our hardware so far. This might be due to a misconfiguration and we will probably come back to this, however our implementation only supports a single sensor for now, - the vendor implementation supports disabling CPU cores as a cooling device. We did not attempt to port this, and this would not really fit this driver anyway. Additionally, some differences from the other SoCs supported by this driver: - we do not really constrain the e-fuse information like the other SoCs do (data->{min,max}_efuse_value). In our tests, those values (as well as the raw sensor values) were much higher than in the other SoCs, to the degree that reusing the data->{min,max}_efuse_value from the other SoCs would cause instant critical temperature reset on boot, - this SoC provides more information in the e-fuse data than other SoCs, so we read some values inside exynos850_tmu_initialize instead of hardcoding them in exynos_map_dt_data. Reviewed-by: Sam Protsenko Signed-off-by: Mateusz Majewski --- v3 -> v4: adapted to sanitize_temp_error change. v1 -> v2: rename and reorder some registers, use the correct register offset for EXYNOS850_TMU_REG_AVG_CON, make the clock required, additionally do some minor style changes. drivers/thermal/samsung/exynos_tmu.c | 179 ++++++++++++++++++++++++++- 1 file changed, 176 insertions(+), 3 deletions(-) diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c index 9bddf9fd5049..c5769f9b6471 100644 --- a/drivers/thermal/samsung/exynos_tmu.c +++ b/drivers/thermal/samsung/exynos_tmu.c @@ -117,6 +117,41 @@ #define EXYNOS7_EMUL_DATA_SHIFT 7 #define EXYNOS7_EMUL_DATA_MASK 0x1ff +/* Exynos850 specific registers */ +#define EXYNOS850_TMU_REG_CURRENT_TEMP0_1 0x40 +#define EXYNOS850_TMU_REG_THD_TEMP0_RISE 0x50 +#define EXYNOS850_TMU_REG_THD_TEMP0_FALL 0x60 + +#define EXYNOS850_TMU_TRIMINFO_SHIFT 4 +#define EXYNOS850_TMU_TRIMINFO_OFFSET(n) \ + (EXYNOS_TMU_REG_TRIMINFO + (n) * EXYNOS850_TMU_TRIMINFO_SHIFT) +#define EXYNOS850_TMU_T_TRIM0_SHIFT 18 + +#define EXYNOS850_TMU_REG_CONTROL1 0x24 +#define EXYNOS850_TMU_LPI_MODE_MASK 1 +#define EXYNOS850_TMU_LPI_MODE_SHIFT 10 + +#define EXYNOS850_TMU_REG_COUNTER_VALUE0 0x30 +#define EXYNOS850_TMU_EN_TEMP_SEN_OFF_MASK 0xffff +#define EXYNOS850_TMU_EN_TEMP_SEN_OFF_SHIFT 0 + +#define EXYNOS850_TMU_REG_COUNTER_VALUE1 0x34 +#define EXYNOS850_TMU_CLK_SENSE_ON_MASK 0xffff +#define EXYNOS850_TMU_CLK_SENSE_ON_SHIFT 16 + +#define EXYNOS850_TMU_REG_AVG_CON 0x38 +#define EXYNOS850_TMU_AVG_MODE_MASK 0x7 +#define EXYNOS850_TMU_DEM_ENABLE BIT(4) + +#define EXYNOS850_TMU_REG_TRIM0 0x3c +#define EXYNOS850_TMU_TRIM0_MASK 0xf +#define EXYNOS850_TMU_VBEI_TRIM_SHIFT 8 +#define EXYNOS850_TMU_VREF_TRIM_SHIFT 12 +#define EXYNOS850_TMU_BGRI_TRIM_SHIFT 20 + +#define EXYNOS850_TMU_TEM1051X_SENSE_VALUE 0x028a +#define EXYNOS850_TMU_TEM1456X_SENSE_VALUE 0x0a28 + #define EXYNOS_FIRST_POINT_TRIM 25 #define EXYNOS_SECOND_POINT_TRIM 85 @@ -134,6 +169,7 @@ enum soc_type { SOC_ARCH_EXYNOS5420_TRIMINFO, SOC_ARCH_EXYNOS5433, SOC_ARCH_EXYNOS7, + SOC_ARCH_EXYNOS850, }; /** @@ -584,6 +620,114 @@ static void exynos7_tmu_initialize(struct platform_device *pdev) sanitize_temp_error(data, trim_info); } +static void exynos850_tmu_set_low_temp(struct exynos_tmu_data *data, u8 temp) +{ + exynos_tmu_update_temp(data, EXYNOS850_TMU_REG_THD_TEMP0_FALL + 12, 0, + temp); + exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN, + EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, true); +} + +static void exynos850_tmu_set_high_temp(struct exynos_tmu_data *data, u8 temp) +{ + exynos_tmu_update_temp(data, EXYNOS850_TMU_REG_THD_TEMP0_RISE + 12, 16, + temp); + exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN, + EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, true); +} + +static void exynos850_tmu_disable_low(struct exynos_tmu_data *data) +{ + exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN, + EXYNOS_TMU_INTEN_FALL0_SHIFT + 0, false); +} + +static void exynos850_tmu_disable_high(struct exynos_tmu_data *data) +{ + exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN, + EXYNOS7_TMU_INTEN_RISE0_SHIFT + 1, false); +} + +static void exynos850_tmu_set_crit_temp(struct exynos_tmu_data *data, u8 temp) +{ + exynos_tmu_update_temp(data, EXYNOS850_TMU_REG_THD_TEMP0_RISE + 0, 16, + temp); + exynos_tmu_update_bit(data, EXYNOS_TMU_REG_CONTROL, + EXYNOS_TMU_THERM_TRIP_EN_SHIFT, true); + exynos_tmu_update_bit(data, EXYNOS7_TMU_REG_INTEN, + EXYNOS7_TMU_INTEN_RISE0_SHIFT + 7, true); +} + +static void exynos850_tmu_initialize(struct platform_device *pdev) +{ + struct exynos_tmu_data *data = platform_get_drvdata(pdev); + u32 cal_type, avg_mode, reg, bgri, vref, vbei; + + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(0)); + cal_type = (reg & EXYNOS5433_TRIMINFO_CALIB_SEL_MASK) >> + EXYNOS5433_TRIMINFO_CALIB_SEL_SHIFT; + data->reference_voltage = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & + EXYNOS_TMU_REF_VOLTAGE_MASK; + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(1)); + data->gain = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & + EXYNOS_TMU_BUF_SLOPE_SEL_MASK; + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(2)); + avg_mode = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & + EXYNOS850_TMU_AVG_MODE_MASK; + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(3)); + bgri = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & EXYNOS850_TMU_TRIM0_MASK; + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(4)); + vref = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & EXYNOS850_TMU_TRIM0_MASK; + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(5)); + vbei = (reg >> EXYNOS850_TMU_T_TRIM0_SHIFT) & EXYNOS850_TMU_TRIM0_MASK; + + data->cal_type = cal_type == EXYNOS5433_TRIMINFO_TWO_POINT_TRIMMING ? + TYPE_TWO_POINT_TRIMMING : + TYPE_ONE_POINT_TRIMMING; + + reg = readl(data->base + EXYNOS850_TMU_TRIMINFO_OFFSET(0)); + sanitize_temp_error(data, reg); + + dev_info(&pdev->dev, "Calibration type is %d-point calibration\n", + cal_type ? 2 : 1); + + reg = readl(data->base + EXYNOS850_TMU_REG_AVG_CON); + reg &= ~EXYNOS850_TMU_AVG_MODE_MASK; + reg &= ~EXYNOS850_TMU_DEM_ENABLE; + if (avg_mode) { + reg |= avg_mode; + reg |= EXYNOS850_TMU_DEM_ENABLE; + } + writel(reg, data->base + EXYNOS850_TMU_REG_AVG_CON); + + reg = readl(data->base + EXYNOS850_TMU_REG_COUNTER_VALUE0); + reg &= ~(EXYNOS850_TMU_EN_TEMP_SEN_OFF_MASK + << EXYNOS850_TMU_EN_TEMP_SEN_OFF_SHIFT); + reg |= EXYNOS850_TMU_TEM1051X_SENSE_VALUE + << EXYNOS850_TMU_EN_TEMP_SEN_OFF_SHIFT; + writel(reg, data->base + EXYNOS850_TMU_REG_COUNTER_VALUE0); + + reg = readl(data->base + EXYNOS850_TMU_REG_COUNTER_VALUE1); + reg &= ~(EXYNOS850_TMU_CLK_SENSE_ON_MASK + << EXYNOS850_TMU_CLK_SENSE_ON_SHIFT); + reg |= EXYNOS850_TMU_TEM1051X_SENSE_VALUE + << EXYNOS850_TMU_CLK_SENSE_ON_SHIFT; + writel(reg, data->base + EXYNOS850_TMU_REG_COUNTER_VALUE1); + + reg = readl(data->base + EXYNOS850_TMU_REG_TRIM0); + reg &= ~(EXYNOS850_TMU_TRIM0_MASK << EXYNOS850_TMU_BGRI_TRIM_SHIFT); + reg &= ~(EXYNOS850_TMU_TRIM0_MASK << EXYNOS850_TMU_VREF_TRIM_SHIFT); + reg &= ~(EXYNOS850_TMU_TRIM0_MASK << EXYNOS850_TMU_VBEI_TRIM_SHIFT); + reg |= bgri << EXYNOS850_TMU_BGRI_TRIM_SHIFT; + reg |= vref << EXYNOS850_TMU_VREF_TRIM_SHIFT; + reg |= vbei << EXYNOS850_TMU_VBEI_TRIM_SHIFT; + writel(reg, data->base + EXYNOS850_TMU_REG_TRIM0); + + reg = readl(data->base + EXYNOS850_TMU_REG_CONTROL1); + reg &= ~(EXYNOS850_TMU_LPI_MODE_MASK << EXYNOS850_TMU_LPI_MODE_SHIFT); + writel(reg, data->base + EXYNOS850_TMU_REG_CONTROL1); +} + static void exynos4210_tmu_control(struct platform_device *pdev, bool on) { struct exynos_tmu_data *data = platform_get_drvdata(pdev); @@ -673,7 +817,8 @@ static u32 get_emul_con_reg(struct exynos_tmu_data *data, unsigned int val, val &= ~(EXYNOS_EMUL_TIME_MASK << EXYNOS_EMUL_TIME_SHIFT); val |= (EXYNOS_EMUL_TIME << EXYNOS_EMUL_TIME_SHIFT); - if (data->soc == SOC_ARCH_EXYNOS7) { + if (data->soc == SOC_ARCH_EXYNOS7 || + data->soc == SOC_ARCH_EXYNOS850) { val &= ~(EXYNOS7_EMUL_DATA_MASK << EXYNOS7_EMUL_DATA_SHIFT); val |= (temp_to_code(data, temp) << @@ -703,7 +848,8 @@ static void exynos4412_tmu_set_emulation(struct exynos_tmu_data *data, emul_con = EXYNOS5260_EMUL_CON; else if (data->soc == SOC_ARCH_EXYNOS5433) emul_con = EXYNOS5433_TMU_EMUL_CON; - else if (data->soc == SOC_ARCH_EXYNOS7) + else if (data->soc == SOC_ARCH_EXYNOS7 || + data->soc == SOC_ARCH_EXYNOS850) emul_con = EXYNOS7_TMU_REG_EMUL_CON; else emul_con = EXYNOS_EMUL_CON; @@ -758,6 +904,12 @@ static int exynos7_tmu_read(struct exynos_tmu_data *data) EXYNOS7_TMU_TEMP_MASK; } +static int exynos850_tmu_read(struct exynos_tmu_data *data) +{ + return readw(data->base + EXYNOS850_TMU_REG_CURRENT_TEMP0_1) & + EXYNOS7_TMU_TEMP_MASK; +} + static irqreturn_t exynos_tmu_threaded_irq(int irq, void *id) { struct exynos_tmu_data *data = id; @@ -784,7 +936,8 @@ static void exynos4210_tmu_clear_irqs(struct exynos_tmu_data *data) if (data->soc == SOC_ARCH_EXYNOS5260) { tmu_intstat = EXYNOS5260_TMU_REG_INTSTAT; tmu_intclear = EXYNOS5260_TMU_REG_INTCLEAR; - } else if (data->soc == SOC_ARCH_EXYNOS7) { + } else if (data->soc == SOC_ARCH_EXYNOS7 || + data->soc == SOC_ARCH_EXYNOS850) { tmu_intstat = EXYNOS7_TMU_REG_INTPEND; tmu_intclear = EXYNOS7_TMU_REG_INTPEND; } else if (data->soc == SOC_ARCH_EXYNOS5433) { @@ -835,6 +988,9 @@ static const struct of_device_id exynos_tmu_match[] = { }, { .compatible = "samsung,exynos7-tmu", .data = (const void *)SOC_ARCH_EXYNOS7, + }, { + .compatible = "samsung,exynos850-tmu", + .data = (const void *)SOC_ARCH_EXYNOS850, }, { }, }; @@ -952,6 +1108,23 @@ static int exynos_map_dt_data(struct platform_device *pdev) data->min_efuse_value = 15; data->max_efuse_value = 100; break; + case SOC_ARCH_EXYNOS850: + data->tmu_set_low_temp = exynos850_tmu_set_low_temp; + data->tmu_set_high_temp = exynos850_tmu_set_high_temp; + data->tmu_disable_low = exynos850_tmu_disable_low; + data->tmu_disable_high = exynos850_tmu_disable_high; + data->tmu_set_crit_temp = exynos850_tmu_set_crit_temp; + data->tmu_initialize = exynos850_tmu_initialize; + data->tmu_control = exynos4210_tmu_control; + data->tmu_read = exynos850_tmu_read; + data->tmu_set_emulation = exynos4412_tmu_set_emulation; + data->tmu_clear_irqs = exynos4210_tmu_clear_irqs; + data->temp_mask = EXYNOS7_TMU_TEMP_MASK; + data->temp_85_shift = EXYNOS7_TMU_TEMP_SHIFT; + data->efuse_value = 55; + data->min_efuse_value = 0; + data->max_efuse_value = 511; + break; default: dev_err(&pdev->dev, "Platform not supported\n"); return -EINVAL;