diff options
| author | Marek Vasut <marek.vasut+renesas@gmail.com> | 2017-11-26 18:07:29 +0100 |
|---|---|---|
| committer | Marek Vasut <marek.vasut+renesas@gmail.com> | 2017-11-30 02:34:21 +0100 |
| commit | f6e545a73f8842400f76de4b185b31bea782ff85 (patch) | |
| tree | d6820ced5a4483c867266b0d452f2ec8858f69e7 /drivers/pinctrl/renesas | |
| parent | 2489bb54a51e9e74a52231de04072628a455025c (diff) | |
pfc: rmobile: Add hook to configure pin as GPIO
Add hook into the PFC driver to allow the GPIO driver to toggle
GPSR registers into GPIO mode when GPIO is requested.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Diffstat (limited to 'drivers/pinctrl/renesas')
| -rw-r--r-- | drivers/pinctrl/renesas/pfc.c | 29 | ||||
| -rw-r--r-- | drivers/pinctrl/renesas/sh_pfc.h | 1 |
2 files changed, 30 insertions, 0 deletions
diff --git a/drivers/pinctrl/renesas/pfc.c b/drivers/pinctrl/renesas/pfc.c index b7b74985a3..6670072504 100644 --- a/drivers/pinctrl/renesas/pfc.c +++ b/drivers/pinctrl/renesas/pfc.c @@ -448,6 +448,35 @@ static const char *sh_pfc_pinctrl_get_function_name(struct udevice *dev, return priv->pfc.info->functions[selector].name; } +int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector) +{ + struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev); + struct sh_pfc_pinctrl *pmx = &priv->pmx; + struct sh_pfc *pfc = &priv->pfc; + struct sh_pfc_pin_config *cfg; + const struct sh_pfc_pin *pin = NULL; + int i, idx; + + for (i = 1; i < pfc->info->nr_pins; i++) { + if (priv->pfc.info->pins[i].pin != pin_selector) + continue; + + pin = &priv->pfc.info->pins[i]; + break; + } + + if (!pin) + return -EINVAL; + + idx = sh_pfc_get_pin_index(pfc, pin->pin); + cfg = &pmx->configs[idx]; + + if (cfg->type != PINMUX_TYPE_NONE) + return -EBUSY; + + return sh_pfc_config_mux(pfc, pin->enum_id, PINMUX_TYPE_GPIO); +} + static int sh_pfc_pinctrl_pin_set(struct udevice *dev, unsigned pin_selector, unsigned func_selector) { diff --git a/drivers/pinctrl/renesas/sh_pfc.h b/drivers/pinctrl/renesas/sh_pfc.h index 7aef2d360b..f82417b1a3 100644 --- a/drivers/pinctrl/renesas/sh_pfc.h +++ b/drivers/pinctrl/renesas/sh_pfc.h @@ -243,6 +243,7 @@ void sh_pfc_write_reg(struct sh_pfc *pfc, u32 reg, unsigned int width, u32 data) 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); +int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector); extern const struct sh_pfc_soc_info r8a7795_pinmux_info; extern const struct sh_pfc_soc_info r8a7796_pinmux_info; |