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* pinctrl: sprd: fix off by one bugsDan Carpenter2017-09-121-4/+4
| | | | | | | | | | info->groups[] has info->ngroups elements so these comparisons should be >= instead of >. Fixes: 41d32cfce1ae ("pinctrl: sprd: Add Spreadtrum pin control driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* pinctrl: sprd: check for allocation failureDan Carpenter2017-09-121-3/+7
| | | | | | | | | | | devm_pinctrl_get() could fail with ERR_PTR(-ENOMEM) so I have added a check for that. I also reversed the other IS_ERR() test because it was a little confusing to test one way and then the opposite a couple lines later. Fixes: 41d32cfce1ae ("pinctrl: sprd: Add Spreadtrum pin control driver") Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* pinctrl: sprd: Restrict PINCTRL_SPRD to ARCH_SPRD or COMPILE_TESTGeert Uytterhoeven2017-09-121-1/+2
| | | | | | | | The Spreadtrum pinctrl drivers are only useful when building for a Spreadtrum platform. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* pinctrl: sprd: fix build errors and dependenciesRandy Dunlap2017-09-121-0/+2
| | | | | | | | | | | | | | | | | | | | Fix build errors when CONFIG_OF is not enabled. Also, the pinctrl-sprd-sc9860 driver uses functions from the pinctrl-sprd driver, so the former should depend on the latter driver. ../drivers/pinctrl/sprd/pinctrl-sprd.c: In function 'sprd_dt_node_to_map': ../drivers/pinctrl/sprd/pinctrl-sprd.c:290:2: error: implicit declaration of function 'pinconf_generic_parse_dt_config' [-Werror=implicit-function-declaration] ret = pinconf_generic_parse_dt_config(np, pctldev, &configs, ^ ../drivers/pinctrl/sprd/pinctrl-sprd.c: At top level: ../drivers/pinctrl/sprd/pinctrl-sprd.c:844:44: error: array type has incomplete element type static const struct pinconf_generic_params sprd_dt_params[] = { ^ Signed-off-by: Randy Dunlap <rdunlap@infradead.org> Cc: Baolin Wang <baolin.wang@spreadtrum.com> Cc: Linus Walleij <linus.walleij@linaro.org> Cc: linux-gpio@vger.kernel.org Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* pinctrl: sprd: make three local functions staticColin Ian King2017-09-121-7/+7
| | | | | | | | | | | | | | | | | The functions sprd_pmx_get_function_count, sprd_pmx_get_function_name and sprd_pmx_get_function_groups are local to the source and do not need to be in global scope, so make them static. Cleans up sparse warnings: "symbol 'sprd_pmx_get_function_count' was not declared. Should it be static?" "symbol 'sprd_pmx_get_function_name' was not declared. Should it be static?" "symbol 'sprd_pmx_get_function_groups' was not declared. Should it be static?" Signed-off-by: Colin Ian King <colin.king@canonical.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
* pinctrl: sprd: Add Spreadtrum pin control driverBaolin Wang2017-08-315-0/+2171
This patch adds the pin control driver for Spreadtrum SC9860 platform. Signed-off-by: Baolin Wang <baolin.wang@spreadtrum.com> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>