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Wysocki" , Daniel Lezcano , Zhang Rui , Lukasz Luba , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chen Wang , Inochi Amaoto , Paul Walmsley , Palmer Dabbelt , Albert Ou , Jisheng Zhang Cc: linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Haylen Chu Subject: [PATCH 3/3] thermal: cv180x: Add cv180x thermal driver support Date: Thu, 30 May 2024 13:48:27 +0000 Message-ID: X-Mailer: git-send-email 2.45.1 In-Reply-To: References: X-TMN: [YWUfnzWzre1af1lXCVRyc6z7vzbmpc0k] X-ClientProxiedBy: SG2P153CA0036.APCP153.PROD.OUTLOOK.COM (2603:1096:4:c7::23) To SEYPR01MB4221.apcprd01.prod.exchangelabs.com (2603:1096:101:56::12) X-Microsoft-Original-Message-ID: <20240530134827.53431-3-heylenay@outlook.com> MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: SEYPR01MB4221:EE_|TYSPR01MB5657:EE_ X-MS-Office365-Filtering-Correlation-Id: ccd4b755-f484-42bc-9550-08dc80af4973 X-Microsoft-Antispam: BCL:0;ARA:14566002|461199019|3430499023|440099019|3412199016|1710799017; X-Microsoft-Antispam-Message-Info: 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 X-MS-Exchange-AntiSpam-MessageData-ChunkCount: 1 X-MS-Exchange-AntiSpam-MessageData-0: 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 X-OriginatorOrg: outlook.com X-MS-Exchange-CrossTenant-Network-Message-Id: ccd4b755-f484-42bc-9550-08dc80af4973 X-MS-Exchange-CrossTenant-AuthSource: SEYPR01MB4221.apcprd01.prod.exchangelabs.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 30 May 2024 13:49:12.2485 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 84df9e7f-e9f6-40af-b435-aaaaaaaaaaaa X-MS-Exchange-CrossTenant-RMS-PersistedConsumerOrg: 00000000-0000-0000-0000-000000000000 X-MS-Exchange-Transport-CrossTenantHeadersStamped: TYSPR01MB5657 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240530_064921_132828_1F5F3974 X-CRM114-Status: GOOD ( 18.40 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org Add support for cv180x SoCs integrated thermal sensors. Signed-off-by: Haylen Chu --- drivers/thermal/Kconfig | 6 + drivers/thermal/Makefile | 1 + drivers/thermal/cv180x_thermal.c | 210 +++++++++++++++++++++++++++++++ 3 files changed, 217 insertions(+) create mode 100644 drivers/thermal/cv180x_thermal.c diff --git a/drivers/thermal/Kconfig b/drivers/thermal/Kconfig index 204ed89a3ec9..f53c973a361d 100644 --- a/drivers/thermal/Kconfig +++ b/drivers/thermal/Kconfig @@ -514,4 +514,10 @@ config LOONGSON2_THERMAL is higher than the high temperature threshold or lower than the low temperature threshold, the interrupt will occur. +config CV180X_THERMAL + tristate "Temperature sensor driver for Sophgo CV180X" + help + If you say yes here you get support for thermal sensor integrated in + Sophgo CV180X SoCs. + endif diff --git a/drivers/thermal/Makefile b/drivers/thermal/Makefile index 5cdf7d68687f..5b59bde8a579 100644 --- a/drivers/thermal/Makefile +++ b/drivers/thermal/Makefile @@ -65,3 +65,4 @@ obj-$(CONFIG_AMLOGIC_THERMAL) += amlogic_thermal.o obj-$(CONFIG_SPRD_THERMAL) += sprd_thermal.o obj-$(CONFIG_KHADAS_MCU_FAN_THERMAL) += khadas_mcu_fan.o obj-$(CONFIG_LOONGSON2_THERMAL) += loongson2_thermal.o +obj-$(CONFIG_CV180X_THERMAL) += cv180x_thermal.o diff --git a/drivers/thermal/cv180x_thermal.c b/drivers/thermal/cv180x_thermal.c new file mode 100644 index 000000000000..618e031b4515 --- /dev/null +++ b/drivers/thermal/cv180x_thermal.c @@ -0,0 +1,210 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (C) 2021 CVITEK Inc. + * Copyright (C) 2024 Haylen Chu + */ + +#include +#include +#include +#include +#include +#include +#include + +#define TEMPSEN_VERSION 0x0 +#define TEMPSEN_CTRL 0x4 +#define TEMPSEN_CTRL_EN BIT(0) +#define TEMPSEN_CTRL_SEL_MASK GENMASK(7, 4) +#define TEMPSEN_CTRL_SEL_OFFSET 4 +#define TEMPSEN_STATUS 0x8 +#define TEMPSEN_SET 0xc +#define TEMPSEN_SET_CHOPSEL_MASK GENMASK(5, 4) +#define TEMPSEN_SET_CHOPSEL_OFFSET 4 +#define TEMPSEN_SET_CHOPSEL_128T 0 +#define TEMPSEN_SET_CHOPSEL_256T 1 +#define TEMPSEN_SET_CHOPSEL_512T 2 +#define TEMPSEN_SET_CHOPSEL_1024T 3 +#define TEMPSEN_SET_ACCSEL_MASK GENMASK(7, 6) +#define TEMPSEN_SET_ACCSEL_OFFSET 6 +#define TEMPSEN_SET_ACCSEL_512T 0 +#define TEMPSEN_SET_ACCSEL_1024T 1 +#define TEMPSEN_SET_ACCSEL_2048T 2 +#define TEMPSEN_SET_ACCSEL_4096T 3 +#define TEMPSEN_SET_CYC_CLKDIV_MASK GENMASK(15, 8) +#define TEMPSEN_SET_CYC_CLKDIV_OFFSET 8 +#define TEMPSEN_INTR_EN 0x10 +#define TEMPSEN_INTR_CLR 0x14 +#define TEMPSEN_INTR_STA 0x18 +#define TEMPSEN_INTR_RAW 0x1c +#define TEMPSEN_RESULT(n) (0x20 + (n) * 4) +#define TEMPSEN_RESULT_RESULT_MASK GENMASK(12, 0) +#define TEMPSEN_RESULT_MAX_RESULT_MASK GENMASK(28, 16) +#define TEMPSEN_RESULT_CLR_MAX_RESULT BIT(31) +#define TEMPSEN_AUTO_PERIOD 0x64 +#define TEMPSEN_AUTO_PERIOD_AUTO_CYCLE_MASK GENMASK(23, 0) +#define TEMPSEN_AUTO_PERIOD_AUTO_CYCLE_OFFSET 0 + +struct cv180x_thermal_zone { + struct device *dev; + void __iomem *base; + struct clk *clk_tempsen; +}; + +static void cv180x_thermal_init(struct cv180x_thermal_zone *ctz) +{ + void __iomem *base = ctz->base; + u32 regval; + + writel(readl(base + TEMPSEN_INTR_RAW), base + TEMPSEN_INTR_CLR); + writel(TEMPSEN_RESULT_CLR_MAX_RESULT, base + TEMPSEN_RESULT(0)); + + regval = readl(base + TEMPSEN_SET); + regval &= ~TEMPSEN_SET_CHOPSEL_MASK; + regval &= ~TEMPSEN_SET_ACCSEL_MASK; + regval &= ~TEMPSEN_SET_CYC_CLKDIV_MASK; + regval |= TEMPSEN_SET_CHOPSEL_1024T << TEMPSEN_SET_CHOPSEL_OFFSET; + regval |= TEMPSEN_SET_ACCSEL_2048T << TEMPSEN_SET_ACCSEL_OFFSET; + regval |= 0x31 << TEMPSEN_SET_CYC_CLKDIV_OFFSET; + writel(regval, base + TEMPSEN_SET); + + regval = readl(base + TEMPSEN_AUTO_PERIOD); + regval &= ~TEMPSEN_AUTO_PERIOD_AUTO_CYCLE_MASK; + regval |= 0x100000 << TEMPSEN_AUTO_PERIOD_AUTO_CYCLE_OFFSET; + writel(regval, base + TEMPSEN_AUTO_PERIOD); + + regval = readl(base + TEMPSEN_CTRL); + regval &= ~TEMPSEN_CTRL_SEL_MASK; + regval |= 1 << TEMPSEN_CTRL_SEL_OFFSET; + regval |= TEMPSEN_CTRL_EN; + writel(regval, base + TEMPSEN_CTRL); +} + +static void cv180x_thermal_deinit(struct cv180x_thermal_zone *ct) +{ + void __iomem *base = ct->base; + u32 regval; + + regval = readl(base + TEMPSEN_CTRL); + regval &= ~(TEMPSEN_CTRL_SEL_MASK | TEMPSEN_CTRL_EN); + writel(regval, base + TEMPSEN_CTRL); + + writel(readl(base + TEMPSEN_INTR_RAW), base + TEMPSEN_INTR_CLR); +} + +static int calc_temp(uint32_t result) +{ + return ((result * 1000) * 716 / 2048 - 273000); +} + +static int cv180x_get_temp(struct thermal_zone_device *tdev, int *temperature) +{ + struct cv180x_thermal_zone *ctz = thermal_zone_device_priv(tdev); + void __iomem *base = ctz->base; + u32 result; + + result = readl(base + TEMPSEN_RESULT(0)) & TEMPSEN_RESULT_RESULT_MASK; + *temperature = calc_temp(result); + + return 0; +} + +static const struct thermal_zone_device_ops cv180x_thermal_ops = { + .get_temp = cv180x_get_temp, +}; + +static const struct of_device_id cv180x_thermal_of_match[] = { + { + .compatible = "sophgo,cv180x-thermal", + }, + {}, +}; +MODULE_DEVICE_TABLE(of, cv180x_thermal_of_match); + +static int cv180x_thermal_probe(struct platform_device *pdev) +{ + struct cv180x_thermal_zone *ctz; + struct thermal_zone_device *tz; + struct resource *res; + + ctz = devm_kzalloc(&pdev->dev, sizeof(*ctz), GFP_KERNEL); + if (!ctz) + return -ENOMEM; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + ctz->base = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(ctz->base)) + return dev_err_probe(&pdev->dev, PTR_ERR(ctz->base), + "failed to map tempsen registers\n"); + + ctz->clk_tempsen = devm_clk_get(&pdev->dev, "clk_tempsen"); + if (IS_ERR(ctz->clk_tempsen)) + return dev_err_probe(&pdev->dev, PTR_ERR(ctz->clk_tempsen), + "failed to get clk_tempsen\n"); + + clk_prepare_enable(ctz->clk_tempsen); + + ctz->dev = &pdev->dev; + + cv180x_thermal_init(ctz); + + platform_set_drvdata(pdev, ctz); + + tz = devm_thermal_of_zone_register(&pdev->dev, 0, ctz, + &cv180x_thermal_ops); + if (IS_ERR(tz)) + return dev_err_probe(&pdev->dev, PTR_ERR(tz), + "failed to register thermal zone\n"); + + return 0; +} + +static int cv180x_thermal_remove(struct platform_device *pdev) +{ + struct cv180x_thermal_zone *ctz = platform_get_drvdata(pdev); + + cv180x_thermal_deinit(ctz); + clk_disable_unprepare(ctz->clk_tempsen); + + return 0; +} + +#ifdef CONFIG_PM_SLEEP +static int cv180x_thermal_suspend(struct device *dev) +{ + struct cv180x_thermal_zone *ctz = dev_get_drvdata(dev); + + cv180x_thermal_deinit(ctz); + clk_disable_unprepare(ctz->clk_tempsen); + + return 0; +} + +static int cv180x_thermal_resume(struct device *dev) +{ + struct cv180x_thermal_zone *ctz = dev_get_drvdata(dev); + + clk_prepare_enable(ctz->clk_tempsen); + cv180x_thermal_init(ctz); + + return 0; +} +#endif /* CONFIG_PM_SLEEP */ + +static SIMPLE_DEV_PM_OPS(cv180x_thermal_pm_ops, + cv180x_thermal_suspend, cv180x_thermal_resume); + +static struct platform_driver cv180x_thermal_driver = { + .probe = cv180x_thermal_probe, + .remove = cv180x_thermal_remove, + .driver = { + .name = "cv180x-thermal", + .pm = &cv180x_thermal_pm_ops, + .of_match_table = cv180x_thermal_of_match, + }, +}; + +module_platform_driver(cv180x_thermal_driver); + +MODULE_AUTHOR("Haylen Chu "); +MODULE_LICENSE("GPL");