diff options
Diffstat (limited to 'target/linux/brcm2708/patches-4.19/950-0466-thermal-brcmstb_thermal-Add-BCM2838-support.patch')
| -rw-r--r-- | target/linux/brcm2708/patches-4.19/950-0466-thermal-brcmstb_thermal-Add-BCM2838-support.patch | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/target/linux/brcm2708/patches-4.19/950-0466-thermal-brcmstb_thermal-Add-BCM2838-support.patch b/target/linux/brcm2708/patches-4.19/950-0466-thermal-brcmstb_thermal-Add-BCM2838-support.patch new file mode 100644 index 0000000000..6bc76ed6e6 --- /dev/null +++ b/target/linux/brcm2708/patches-4.19/950-0466-thermal-brcmstb_thermal-Add-BCM2838-support.patch @@ -0,0 +1,162 @@ +From d49649e2dcf0d5775e92677d37e229e0387fe82a Mon Sep 17 00:00:00 2001 +From: Stefan Wahren <wahrenst@gmx.net> +Date: Sat, 18 May 2019 12:26:11 +0200 +Subject: [PATCH] thermal: brcmstb_thermal: Add BCM2838 support + +The BCM2838 has an AVS TMON hardware block. This adds the necessary +support to the brcmstb_thermal driver ( no trip handling ). + +Signed-off-by: Stefan Wahren <wahrenst@gmx.net> +--- + drivers/thermal/broadcom/Kconfig | 2 +- + drivers/thermal/broadcom/brcmstb_thermal.c | 65 +++++++++++++++++++--- + 2 files changed, 58 insertions(+), 9 deletions(-) + +--- a/drivers/thermal/broadcom/Kconfig ++++ b/drivers/thermal/broadcom/Kconfig +@@ -8,7 +8,7 @@ config BCM2835_THERMAL + + config BRCMSTB_THERMAL + tristate "Broadcom STB AVS TMON thermal driver" +- depends on ARCH_BRCMSTB || COMPILE_TEST ++ depends on ARCH_BRCMSTB || ARCH_BCM2835 || COMPILE_TEST + help + Enable this driver if you have a Broadcom STB SoC and would like + thermal framework support. +--- a/drivers/thermal/broadcom/brcmstb_thermal.c ++++ b/drivers/thermal/broadcom/brcmstb_thermal.c +@@ -19,6 +19,7 @@ + #define pr_fmt(fmt) DRV_NAME ": " fmt + + #include <linux/bitops.h> ++#include <linux/clk.h> + #include <linux/device.h> + #include <linux/err.h> + #include <linux/io.h> +@@ -31,9 +32,6 @@ + #include <linux/thermal.h> + + #define AVS_TMON_STATUS 0x00 +- #define AVS_TMON_STATUS_valid_msk BIT(11) +- #define AVS_TMON_STATUS_data_msk GENMASK(10, 1) +- #define AVS_TMON_STATUS_data_shift 1 + + #define AVS_TMON_EN_OVERTEMP_RESET 0x04 + #define AVS_TMON_EN_OVERTEMP_RESET_msk BIT(0) +@@ -111,10 +109,19 @@ static struct avs_tmon_trip avs_tmon_tri + }, + }; + ++struct brcmstb_thermal_of_data { ++ const struct thermal_zone_of_device_ops *of_ops; ++ u32 status_valid_mask; ++ u32 status_data_mask; ++ u32 status_data_shift; ++}; ++ + struct brcmstb_thermal_priv { + void __iomem *tmon_base; + struct device *dev; + struct thermal_zone_device *thermal; ++ struct clk *clk; ++ const struct brcmstb_thermal_of_data *socdata; + }; + + static void avs_tmon_get_coeffs(struct thermal_zone_device *tz, int *slope, +@@ -164,17 +171,18 @@ static inline u32 avs_tmon_temp_to_code( + static int brcmstb_get_temp(void *data, int *temp) + { + struct brcmstb_thermal_priv *priv = data; ++ const struct brcmstb_thermal_of_data *socdata = priv->socdata; + u32 val; + long t; + + val = __raw_readl(priv->tmon_base + AVS_TMON_STATUS); + +- if (!(val & AVS_TMON_STATUS_valid_msk)) { ++ if (!(val & socdata->status_valid_mask)) { + dev_err(priv->dev, "reading not valid\n"); + return -EIO; + } + +- val = (val & AVS_TMON_STATUS_data_msk) >> AVS_TMON_STATUS_data_shift; ++ val = (val & socdata->status_data_mask) >> socdata->status_data_shift; + + t = avs_tmon_code_to_temp(priv->thermal, val); + if (t < 0) +@@ -299,13 +307,34 @@ static int brcmstb_set_trips(void *data, + return 0; + } + +-static struct thermal_zone_of_device_ops of_ops = { ++static const struct thermal_zone_of_device_ops bcm7445_thermal_of_ops = { + .get_temp = brcmstb_get_temp, + .set_trips = brcmstb_set_trips, + }; + ++static const struct thermal_zone_of_device_ops bcm2838_thermal_of_ops = { ++ .get_temp = brcmstb_get_temp, ++}; ++ ++static const struct brcmstb_thermal_of_data bcm7445_thermal_of_data = { ++ .of_ops = &bcm7445_thermal_of_ops, ++ .status_valid_mask = BIT(11), ++ .status_data_mask = GENMASK(10, 1), ++ .status_data_shift = 1, ++}; ++ ++static const struct brcmstb_thermal_of_data bcm2838_thermal_of_data = { ++ .of_ops = &bcm2838_thermal_of_ops, ++ .status_valid_mask = BIT(10), ++ .status_data_mask = GENMASK(9, 0), ++ .status_data_shift = 0, ++}; ++ + static const struct of_device_id brcmstb_thermal_id_table[] = { +- { .compatible = "brcm,avs-tmon" }, ++ { .compatible = "brcm,avs-tmon", ++ .data = &bcm7445_thermal_of_data }, ++ { .compatible = "brcm,avs-tmon-bcm2838", ++ .data = &bcm2838_thermal_of_data }, + {}, + }; + MODULE_DEVICE_TABLE(of, brcmstb_thermal_id_table); +@@ -326,10 +355,27 @@ static int brcmstb_thermal_probe(struct + if (IS_ERR(priv->tmon_base)) + return PTR_ERR(priv->tmon_base); + ++ priv->socdata = of_device_get_match_data(&pdev->dev); ++ if (!priv->socdata) { ++ dev_err(&pdev->dev, "no device match found\n"); ++ return -ENODEV; ++ } ++ ++ priv->clk = devm_clk_get(&pdev->dev, NULL); ++ if (IS_ERR(priv->clk) && PTR_ERR(priv->clk) == -EPROBE_DEFER) ++ return -EPROBE_DEFER; ++ ++ if (!IS_ERR(priv->clk)) { ++ ret = clk_prepare_enable(priv->clk); ++ if (ret) ++ return ret; ++ } ++ + priv->dev = &pdev->dev; + platform_set_drvdata(pdev, priv); + +- thermal = thermal_zone_of_sensor_register(&pdev->dev, 0, priv, &of_ops); ++ thermal = thermal_zone_of_sensor_register(&pdev->dev, 0, priv, ++ priv->socdata->of_ops); + if (IS_ERR(thermal)) { + ret = PTR_ERR(thermal); + dev_err(&pdev->dev, "could not register sensor: %d\n", ret); +@@ -369,6 +415,9 @@ static int brcmstb_thermal_exit(struct p + if (thermal) + thermal_zone_of_sensor_unregister(&pdev->dev, priv->thermal); + ++ if (!IS_ERR(priv->clk)) ++ clk_disable_unprepare(priv->clk); ++ + return 0; + } + |