From mboxrd@z Thu Jan 1 00:00:00 1970 From: Geert Uytterhoeven Subject: [PATCH v2 04/14] pinctrl: sh-pfc: Add sh_pfc_pin_to_bias_reg() helper Date: Mon, 16 Oct 2017 17:27:49 +0200 Message-ID: <1508167679-21155-5-git-send-email-geert+renesas@glider.be> References: <1508167679-21155-1-git-send-email-geert+renesas@glider.be> Return-path: In-Reply-To: <1508167679-21155-1-git-send-email-geert+renesas@glider.be> Sender: linux-pm-owner@vger.kernel.org To: Laurent Pinchart , Linus Walleij Cc: =?UTF-8?q?Niklas=20S=C3=B6derlund?= , linux-renesas-soc@vger.kernel.org, linux-gpio@vger.kernel.org, linux-pm@vger.kernel.org, Geert Uytterhoeven List-Id: linux-gpio@vger.kernel.org Add a helper to look up bias registers and bit number for a specific pin, using the generic bias register description. Signed-off-by: Geert Uytterhoeven --- v2: - Use ARRAY_SIZE() instead of hardcoded constant 32, - Add curly braces to nested for statements. --- drivers/pinctrl/sh-pfc/core.c | 20 ++++++++++++++++++++ drivers/pinctrl/sh-pfc/core.h | 3 +++ 2 files changed, 23 insertions(+) diff --git a/drivers/pinctrl/sh-pfc/core.c b/drivers/pinctrl/sh-pfc/core.c index 8b422ac07e57263b..01c408a3dee478f2 100644 --- a/drivers/pinctrl/sh-pfc/core.c +++ b/drivers/pinctrl/sh-pfc/core.c @@ -404,6 +404,26 @@ sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info, return NULL; } +const struct pinmux_bias_reg * +sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin, + unsigned int *bit) +{ + unsigned int i, j; + + for (i = 0; pfc->info->bias_regs[i].puen; i++) { + for (j = 0; j < ARRAY_SIZE(pfc->info->bias_regs[i].pins); j++) { + if (pfc->info->bias_regs[i].pins[j] == pin) { + *bit = j; + return &pfc->info->bias_regs[i]; + } + } + } + + WARN_ONCE(1, "Pin %u is not in bias info list\n", pin); + + return NULL; +} + static int sh_pfc_init_ranges(struct sh_pfc *pfc) { struct sh_pfc_pin_range *range; diff --git a/drivers/pinctrl/sh-pfc/core.h b/drivers/pinctrl/sh-pfc/core.h index dd215d36dcc82f8a..460d996513acea26 100644 --- a/drivers/pinctrl/sh-pfc/core.h +++ b/drivers/pinctrl/sh-pfc/core.h @@ -35,5 +35,8 @@ int sh_pfc_config_mux(struct sh_pfc *pfc, unsigned mark, int pinmux_type); const struct sh_pfc_bias_info * sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info, unsigned int num, unsigned int pin); +const struct pinmux_bias_reg * +sh_pfc_pin_to_bias_reg(const struct sh_pfc *pfc, unsigned int pin, + unsigned int *bit); #endif /* __SH_PFC_CORE_H__ */ -- 2.7.4