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>

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>
Marek Vasut
1 parent 2489bb54a5
Showing 2 changed files with 30 additions and 0 deletions Side-by-side Diff
drivers/pinctrl/renesas/pfc.c
drivers/pinctrl/renesas/sh_pfc.h
@@ -448,6 +448,35 @@
 	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)
 {
@@ -243,6 +243,7 @@
 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;
...	...	@@ -448,6 +448,35 @@
448	448	return priv->pfc.info->functions[selector].name;
449	449	}
450	450
	451	+int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector)
	452	+{
	453	+ struct sh_pfc_pinctrl_priv *priv = dev_get_priv(dev);
	454	+ struct sh_pfc_pinctrl *pmx = &priv->pmx;
	455	+ struct sh_pfc *pfc = &priv->pfc;
	456	+ struct sh_pfc_pin_config *cfg;
	457	+ const struct sh_pfc_pin *pin = NULL;
	458	+ int i, idx;
	459	+
	460	+ for (i = 1; i < pfc->info->nr_pins; i++) {
	461	+ if (priv->pfc.info->pins[i].pin != pin_selector)
	462	+ continue;
	463	+
	464	+ pin = &priv->pfc.info->pins[i];
	465	+ break;
	466	+ }
	467	+
	468	+ if (!pin)
	469	+ return -EINVAL;
	470	+
	471	+ idx = sh_pfc_get_pin_index(pfc, pin->pin);
	472	+ cfg = &pmx->configs[idx];
	473	+
	474	+ if (cfg->type != PINMUX_TYPE_NONE)
	475	+ return -EBUSY;
	476	+
	477	+ return sh_pfc_config_mux(pfc, pin->enum_id, PINMUX_TYPE_GPIO);
	478	+}
	479	+
451	480	static int sh_pfc_pinctrl_pin_set(struct udevice *dev, unsigned pin_selector,
452	481	unsigned func_selector)
453	482	{
...	...	@@ -243,6 +243,7 @@
243	243	const struct sh_pfc_bias_info *
244	244	sh_pfc_pin_to_bias_info(const struct sh_pfc_bias_info *info,
245	245	unsigned int num, unsigned int pin);
	246	+int sh_pfc_config_mux_for_gpio(struct udevice *dev, unsigned pin_selector);
246	247
247	248	extern const struct sh_pfc_soc_info r8a7795_pinmux_info;
248	249	extern const struct sh_pfc_soc_info r8a7796_pinmux_info;