diff options
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/watchdog/s3c2410_wdt.c | 64 |
1 files changed, 63 insertions, 1 deletions
diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 62d797a8bfdf..bb374b9fc163 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -56,6 +56,13 @@ #define EXYNOS5_RST_STAT_REG_OFFSET 0x0404 #define EXYNOS5_WDT_DISABLE_REG_OFFSET 0x0408 #define EXYNOS5_WDT_MASK_RESET_REG_OFFSET 0x040c +#define EXYNOS850_CLUSTER0_NONCPU_OUT 0x1220 +#define EXYNOS850_CLUSTER0_NONCPU_INT_EN 0x1244 +#define EXYNOS850_CLUSTER1_NONCPU_OUT 0x1620 +#define EXYNOS850_CLUSTER1_NONCPU_INT_EN 0x1644 + +#define EXYNOS850_CLUSTER0_WDTRESET_BIT 24 +#define EXYNOS850_CLUSTER1_WDTRESET_BIT 23 /** * DOC: Quirk flags for different Samsung watchdog IP-cores @@ -205,6 +212,30 @@ static const struct s3c2410_wdt_variant drv_data_exynos7 = { QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_AUTO_DISABLE, }; +static const struct s3c2410_wdt_variant drv_data_exynos850_cl0 = { + .mask_reset_reg = EXYNOS850_CLUSTER0_NONCPU_INT_EN, + .mask_bit = 2, + .mask_reset_inv = true, + .rst_stat_reg = EXYNOS5_RST_STAT_REG_OFFSET, + .rst_stat_bit = EXYNOS850_CLUSTER0_WDTRESET_BIT, + .cnt_en_reg = EXYNOS850_CLUSTER0_NONCPU_OUT, + .cnt_en_bit = 7, + .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | \ + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, +}; + +static const struct s3c2410_wdt_variant drv_data_exynos850_cl1 = { + .mask_reset_reg = EXYNOS850_CLUSTER1_NONCPU_INT_EN, + .mask_bit = 2, + .mask_reset_inv = true, + .rst_stat_reg = EXYNOS5_RST_STAT_REG_OFFSET, + .rst_stat_bit = EXYNOS850_CLUSTER1_WDTRESET_BIT, + .cnt_en_reg = EXYNOS850_CLUSTER1_NONCPU_OUT, + .cnt_en_bit = 7, + .quirks = QUIRK_HAS_WTCLRINT_REG | QUIRK_HAS_PMU_MASK_RESET | \ + QUIRK_HAS_PMU_RST_STAT | QUIRK_HAS_PMU_CNT_EN, +}; + static const struct of_device_id s3c2410_wdt_match[] = { { .compatible = "samsung,s3c2410-wdt", .data = &drv_data_s3c2410 }, @@ -216,6 +247,8 @@ static const struct of_device_id s3c2410_wdt_match[] = { .data = &drv_data_exynos5420 }, { .compatible = "samsung,exynos7-wdt", .data = &drv_data_exynos7 }, + { .compatible = "samsung,exynos850-wdt", + .data = &drv_data_exynos850_cl0 }, {}, }; MODULE_DEVICE_TABLE(of, s3c2410_wdt_match); @@ -587,14 +620,40 @@ static inline const struct s3c2410_wdt_variant * s3c2410_get_wdt_drv_data(struct platform_device *pdev) { const struct s3c2410_wdt_variant *variant; + struct device *dev = &pdev->dev; - variant = of_device_get_match_data(&pdev->dev); + variant = of_device_get_match_data(dev); if (!variant) { /* Device matched by platform_device_id */ variant = (struct s3c2410_wdt_variant *) platform_get_device_id(pdev)->driver_data; } +#ifdef CONFIG_OF + /* Choose Exynos850 driver data w.r.t. cluster index */ + if (variant == &drv_data_exynos850_cl0) { + u32 index; + int err; + + err = of_property_read_u32(dev->of_node, + "samsung,cluster-index", &index); + if (err) { + dev_err(dev, "failed to get cluster index\n"); + return NULL; + } + + switch (index) { + case 0: + return &drv_data_exynos850_cl0; + case 1: + return &drv_data_exynos850_cl1; + default: + dev_err(dev, "wrong cluster index: %u\n", index); + return NULL; + } + } +#endif + return variant; } @@ -615,6 +674,9 @@ static int s3c2410wdt_probe(struct platform_device *pdev) wdt->wdt_device = s3c2410_wdd; wdt->drv_data = s3c2410_get_wdt_drv_data(pdev); + if (!wdt->drv_data) + return -EINVAL; + if (wdt->drv_data->quirks & QUIRKS_HAVE_PMUREG) { wdt->pmureg = syscon_regmap_lookup_by_phandle(dev->of_node, "samsung,syscon-phandle"); |