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| author |   Dong Aisheng <aisheng.dong@nxp.com> | 2018-04-28 03:01:49 +0800 |
|---|---|---|
| committer |   Linus Walleij <linus.walleij@linaro.org> | 2018-05-02 14:36:31 +0200 |
| commit | 37c1628fb321f17df3a1affbb9959cc0c5c5f271 (patch) | |
| tree | 7a4214186481db5e08c71779aed450181d568162 /drivers | |
| parent | pinctrl: imx: fix unsigned check if nfuncs with less than or equal zero (diff) | |
| download | linux-dev-37c1628fb321f17df3a1affbb9959cc0c5c5f271.tar.xz linux-dev-37c1628fb321f17df3a1affbb9959cc0c5c5f271.zip | |
pinctrl: pinctrl-imx: improve the code comments of PIN_FUNC_ID
The current code comments of PIN_FUNC_ID actually is not true for
SHARE_MUX_CONF_REG case which should be a 4 u32 PIN_FUNC_ID.
Fix the comments and re-org it a bit for better extendibility
as we may add a different size for SCU based PIN_FUNC_ID later.
Cc: Linus Walleij <linus.walleij@linaro.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Stefan Agner <stefan@agner.ch>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/pinctrl/freescale/pinctrl-imx.c | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/drivers/pinctrl/freescale/pinctrl-imx.c b/drivers/pinctrl/freescale/pinctrl-imx.c index 77cd3641f17d..ff6ca6a4ca74 100644 --- a/drivers/pinctrl/freescale/pinctrl-imx.c +++ b/drivers/pinctrl/freescale/pinctrl-imx.c @@ -414,11 +414,18 @@ static const struct pinconf_ops imx_pinconf_ops = { }; /* - * Each pin represented in fsl,pins consists of 5 u32 PIN_FUNC_ID and - * 1 u32 CONFIG, so 24 types in total for each pin. + * Each pin represented in fsl,pins consists of a number of u32 PIN_FUNC_ID + * and 1 u32 CONFIG, the total size is PIN_FUNC_ID + CONFIG for each pin. + * For generic_pinconf case, there's no extra u32 CONFIG. + * + * PIN_FUNC_ID format: + * Default: + * <mux_reg conf_reg input_reg mux_mode input_val> + * SHARE_MUX_CONF_REG: + * <mux_conf_reg input_reg mux_mode input_val> */ #define FSL_PIN_SIZE 24 -#define SHARE_FSL_PIN_SIZE 20 +#define FSL_PIN_SHARE_SIZE 20 static int imx_pinctrl_parse_groups(struct device_node *np, struct group_desc *grp, @@ -434,7 +441,7 @@ static int imx_pinctrl_parse_groups(struct device_node *np, dev_dbg(ipctl->dev, "group(%d): %s\n", index, np->name); if (info->flags & SHARE_MUX_CONF_REG) - pin_size = SHARE_FSL_PIN_SIZE; + pin_size = FSL_PIN_SHARE_SIZE; else pin_size = FSL_PIN_SIZE; |