kernel/linux.git/drivers/soc/samsung, branch v5.7.4

soc: samsung: chipid: Fix return value on non-Exynos platforms

2020-03-25T13:27:27+00:00

Correct the probe return value to -ENODEV on non-Exynos platforms. Link: https://lore.kernel.org/r/20200316175652.5604-4-krzk@kernel.org Fixes: 02fb29882d5c ("soc: samsung: chipid: Drop "syscon" compatible requirement") Cc: Signed-off-by: Marek Szyprowski Signed-off-by: Krzysztof Kozlowski Signed-off-by: Arnd Bergmann

soc: samsung: Rename Samsung and Exynos to lowercase

2020-01-07T19:46:31+00:00

Fix up inconsistent usage of upper and lowercase letters in "Samsung" and "Exynos" names. "SAMSUNG" and "EXYNOS" are not abbreviations but regular trademarked names. Therefore they should be written with lowercase letters starting with capital letter. The lowercase "Exynos" name is promoted by its manufacturer Samsung Electronics Co., Ltd., in advertisement materials and on website. Although advertisement materials usually use uppercase "SAMSUNG", the lowercase version is used in all legal aspects (e.g. on Wikipedia and in privacy/legal statements on https://www.samsung.com/semiconductor/privacy-global/). Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-pmu: Convert to devm_platform_ioremap_resource

2019-12-15T11:55:36+00:00

Use devm_platform_ioremap_resource() to simplify code. Signed-off-by: Yangtao Li Signed-off-by: Krzysztof Kozlowski

soc: samsung: exynos-asv: Potential NULL dereference in exynos_asv_update_opps()

2019-10-30T18:04:32+00:00

The dev_pm_opp_get_opp_table() returns error pointers if it's disabled in the config and it returns NULL if there is an error. This code only checks for error pointers so it could lead to an Oops inside the dev_pm_opp_put_opp_table() function. Fixes: 5ea428595cc5 ("soc: samsung: Add Exynos Adaptive Supply Voltage driver") Signed-off-by: Dan Carpenter Signed-off-by: Krzysztof Kozlowski

soc: samsung: chipid: Drop "syscon" compatible requirement

2019-10-28T17:02:04+00:00

As we dropped the requirement of "syscon" compatible in the chipid nodes rework code acquiring the regmap to use device_node_to_regmap() rather than syscon_node_to_regmap(). Signed-off-by: Sylwester Nawrocki Signed-off-by: Krzysztof Kozlowski

soc: samsung: Add Exynos Adaptive Supply Voltage driver

2019-10-28T16:59:33+00:00

The Adaptive Supply Voltage (ASV) driver adjusts CPU cluster operating points depending on exact revision of an SoC retrieved from the CHIPID block or the OTP memory. This allows for some power saving as for some CPU clock frequencies we can lower CPU cluster's supply voltage comparing to safe values common to all the SoC revisions. This patch adds support for Exynos5422/5800 SoC, it is partially based on code from https://github.com/hardkernel/linux repository, branch odroidxu4-4.14.y, files: arch/arm/mach-exynos/exynos5422-asv.[ch]. Tested on Odroid XU3, XU4, XU3 Lite. Signed-off-by: Sylwester Nawrocki Signed-off-by: Krzysztof Kozlowski

soc: samsung: chipid: Make exynos_chipid_early_init() static

2019-10-06T15:44:05+00:00

Add missing static qualifier to the chipid initcall function. Signed-off-by: Sylwester Nawrocki Signed-off-by: Krzysztof Kozlowski

soc: samsung: chipid: Select missing dependency for EXYNOS_CHIPID

2019-08-22T18:16:20+00:00

The chipid driver uses the MFD syscon API but it was not covered properly in Kconfig. Signed-off-by: Sylwester Nawrocki Signed-off-by: Krzysztof Kozlowski

soc: samsung: chipid: Remove the regmap lookup error log

2019-08-22T18:15:38+00:00

In commit 40d8aff614f7 ("soc: samsung: chipid: Convert exynos-chipid driver to use the regmap API") of_find_compatible_node() call was substituted with syscon_regmap_lookup_by_compatible() but also an error log was added for case where lookup fails. On multiplatform the lookup will always fail on any non-samsung device so the log is incorrect. Remove the error log and just return an error code from syscon_regmap_lookup_by_compatible() which internally calls of_find_compatible_node(). Reported-by: Jon Hunter Signed-off-by: Sylwester Nawrocki Signed-off-by: Krzysztof Kozlowski

soc: samsung: chipid: Fix memory leak in error path

2019-08-19T17:06:14+00:00

Currently when the call to product_id_to_soc_id fails there is a memory leak of soc_dev_attr->revision and soc_dev_attr on the error return path. Fix this by adding a common error return path that frees there obects and use this for two error return paths. Addresses-Coverity: ("Resource leak") Fixes: 3253b7b7cd44 ("soc: samsung: Add exynos chipid driver support") Signed-off-by: Colin Ian King Signed-off-by: Krzysztof Kozlowski