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From:   Parthiban Nallathambi <pn@denx.de>
To:     linus.walleij@linaro.org, manivannan.sadhasivam@linaro.org,
        afaerber@suse.de, robh+dt@kernel.org, mark.rutland@arm.com
Cc:     linux-gpio@vger.kernel.org, devicetree@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        catalin.marinas@arm.com, will.deacon@arm.com,
        mp-cs@actions-semi.com, thomas.liau@actions-semi.com,
        linux@cubietech.com, pn@denx.de, sravanhome@gmail.com
Subject: [PATCH v6 2/5] pinctrl: actions: define pad control configurtion to SoC specific
Date:   Tue, 13 Nov 2018 11:07:06 +0100
Message-Id: <20181113100709.5615-3-pn@denx.de>
In-Reply-To: <20181113100709.5615-1-pn@denx.de>
References: <20181113100709.5615-1-pn@denx.de>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

From: Saravanan Sekar <sravanhome@gmail.com>

pad control for s900 and s700 are differs in number of
pull control configuraions
s900 has 4 pull controls - high impedence, pull up, pull down, repeater
s700, s500 has 2 pull controls - pull up and pull down

so pad control configuration has to SoC specific, moved out from pinctrl
common to s900 specific.

Signed-off-by: Parthiban Nallathambi <pn@denx.de>
Signed-off-by: Saravanan Sekar <sravanhome@gmail.com>
---
 drivers/pinctrl/actions/pinctrl-owl.c  | 64 ++++---------------------
 drivers/pinctrl/actions/pinctrl-owl.h  | 13 +++--
 drivers/pinctrl/actions/pinctrl-s900.c | 66 +++++++++++++++++++++++++-
 3 files changed, 79 insertions(+), 64 deletions(-)

diff --git a/drivers/pinctrl/actions/pinctrl-owl.c b/drivers/pinctrl/actions/pinctrl-owl.c
index 9d18c02f192b..cc242d6a47c3 100644
--- a/drivers/pinctrl/actions/pinctrl-owl.c
+++ b/drivers/pinctrl/actions/pinctrl-owl.c
@@ -246,60 +246,6 @@ static int owl_pad_pinconf_reg(const struct owl_padinfo *info,
 	return 0;
 }
 
-static int owl_pad_pinconf_arg2val(const struct owl_padinfo *info,
-				unsigned int param,
-				u32 *arg)
-{
-	switch (param) {
-	case PIN_CONFIG_BIAS_BUS_HOLD:
-		*arg = OWL_PINCONF_PULL_HOLD;
-		break;
-	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
-		*arg = OWL_PINCONF_PULL_HIZ;
-		break;
-	case PIN_CONFIG_BIAS_PULL_DOWN:
-		*arg = OWL_PINCONF_PULL_DOWN;
-		break;
-	case PIN_CONFIG_BIAS_PULL_UP:
-		*arg = OWL_PINCONF_PULL_UP;
-		break;
-	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
-		*arg = (*arg >= 1 ? 1 : 0);
-		break;
-	default:
-		return -ENOTSUPP;
-	}
-
-	return 0;
-}
-
-static int owl_pad_pinconf_val2arg(const struct owl_padinfo *padinfo,
-				unsigned int param,
-				u32 *arg)
-{
-	switch (param) {
-	case PIN_CONFIG_BIAS_BUS_HOLD:
-		*arg = *arg == OWL_PINCONF_PULL_HOLD;
-		break;
-	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
-		*arg = *arg == OWL_PINCONF_PULL_HIZ;
-		break;
-	case PIN_CONFIG_BIAS_PULL_DOWN:
-		*arg = *arg == OWL_PINCONF_PULL_DOWN;
-		break;
-	case PIN_CONFIG_BIAS_PULL_UP:
-		*arg = *arg == OWL_PINCONF_PULL_UP;
-		break;
-	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
-		*arg = *arg == 1;
-		break;
-	default:
-		return -ENOTSUPP;
-	}
-
-	return 0;
-}
-
 static int owl_pin_config_get(struct pinctrl_dev *pctrldev,
 				unsigned int pin,
 				unsigned long *config)
@@ -318,7 +264,10 @@ static int owl_pin_config_get(struct pinctrl_dev *pctrldev,
 
 	arg = owl_read_field(pctrl, reg, bit, width);
 
-	ret = owl_pad_pinconf_val2arg(info, param, &arg);
+	if (!pctrl->soc->padctl_val2arg)
+		return -ENOTSUPP;
+
+	ret = pctrl->soc->padctl_val2arg(info, param, &arg);
 	if (ret)
 		return ret;
 
@@ -349,7 +298,10 @@ static int owl_pin_config_set(struct pinctrl_dev *pctrldev,
 		if (ret)
 			return ret;
 
-		ret = owl_pad_pinconf_arg2val(info, param, &arg);
+		if (!pctrl->soc->padctl_arg2val)
+			return -ENOTSUPP;
+
+		ret = pctrl->soc->padctl_arg2val(info, param, &arg);
 		if (ret)
 			return ret;
 
diff --git a/drivers/pinctrl/actions/pinctrl-owl.h b/drivers/pinctrl/actions/pinctrl-owl.h
index 31cc33d7c4a5..dae2e8363fd5 100644
--- a/drivers/pinctrl/actions/pinctrl-owl.h
+++ b/drivers/pinctrl/actions/pinctrl-owl.h
@@ -145,13 +145,6 @@
 		.shared_ctl_offset = _share,			\
 	}
 
-enum owl_pinconf_pull {
-	OWL_PINCONF_PULL_HIZ,
-	OWL_PINCONF_PULL_DOWN,
-	OWL_PINCONF_PULL_UP,
-	OWL_PINCONF_PULL_HOLD,
-};
-
 enum owl_pinconf_drv {
 	OWL_PINCONF_DRV_2MA,
 	OWL_PINCONF_DRV_4MA,
@@ -305,6 +298,12 @@ struct owl_pinctrl_soc_data {
 	unsigned int ngpios;
 	const struct owl_gpio_port *ports;
 	unsigned int nports;
+	int (*padctl_val2arg)(const struct owl_padinfo *padinfo,
+				unsigned int param,
+				u32 *arg);
+	int (*padctl_arg2val)(const struct owl_padinfo *info,
+				unsigned int param,
+				u32 *arg);
 };
 
 int owl_pinctrl_probe(struct platform_device *pdev,
diff --git a/drivers/pinctrl/actions/pinctrl-s900.c b/drivers/pinctrl/actions/pinctrl-s900.c
index 0597009d8369..9492b86852e7 100644
--- a/drivers/pinctrl/actions/pinctrl-s900.c
+++ b/drivers/pinctrl/actions/pinctrl-s900.c
@@ -13,6 +13,7 @@
 #include <linux/of.h>
 #include <linux/platform_device.h>
 #include <linux/pinctrl/pinctrl.h>
+#include <linux/pinctrl/pinconf-generic.h>
 #include "pinctrl-owl.h"
 
 /* Pinctrl registers offset */
@@ -1717,6 +1718,67 @@ static const struct owl_gpio_port s900_gpio_ports[] = {
 	OWL_GPIO_PORT(F, 0x00F0, 8, 0x0, 0x4, 0x8, 0x460, 0x140, 0x144, 0x178, 0)
 };
 
+enum s900_pinconf_pull {
+	OWL_PINCONF_PULL_HIZ,
+	OWL_PINCONF_PULL_DOWN,
+	OWL_PINCONF_PULL_UP,
+	OWL_PINCONF_PULL_HOLD,
+};
+
+static int s900_pad_pinconf_arg2val(const struct owl_padinfo *info,
+				unsigned int param,
+				u32 *arg)
+{
+	switch (param) {
+	case PIN_CONFIG_BIAS_BUS_HOLD:
+		*arg = OWL_PINCONF_PULL_HOLD;
+		break;
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		*arg = OWL_PINCONF_PULL_HIZ;
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		*arg = OWL_PINCONF_PULL_DOWN;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		*arg = OWL_PINCONF_PULL_UP;
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		*arg = (*arg >= 1 ? 1 : 0);
+		break;
+	default:
+		return -ENOTSUPP;
+	}
+
+	return 0;
+}
+
+static int s900_pad_pinconf_val2arg(const struct owl_padinfo *padinfo,
+				unsigned int param,
+				u32 *arg)
+{
+	switch (param) {
+	case PIN_CONFIG_BIAS_BUS_HOLD:
+		*arg = *arg == OWL_PINCONF_PULL_HOLD;
+		break;
+	case PIN_CONFIG_BIAS_HIGH_IMPEDANCE:
+		*arg = *arg == OWL_PINCONF_PULL_HIZ;
+		break;
+	case PIN_CONFIG_BIAS_PULL_DOWN:
+		*arg = *arg == OWL_PINCONF_PULL_DOWN;
+		break;
+	case PIN_CONFIG_BIAS_PULL_UP:
+		*arg = *arg == OWL_PINCONF_PULL_UP;
+		break;
+	case PIN_CONFIG_INPUT_SCHMITT_ENABLE:
+		*arg = *arg == 1;
+		break;
+	default:
+		return -ENOTSUPP;
+	}
+
+	return 0;
+}
+
 static struct owl_pinctrl_soc_data s900_pinctrl_data = {
 	.padinfo = s900_padinfo,
 	.pins = (const struct pinctrl_pin_desc *)s900_pads,
@@ -1727,7 +1789,9 @@ static struct owl_pinctrl_soc_data s900_pinctrl_data = {
 	.ngroups = ARRAY_SIZE(s900_groups),
 	.ngpios = NUM_GPIOS,
 	.ports = s900_gpio_ports,
-	.nports = ARRAY_SIZE(s900_gpio_ports)
+	.nports = ARRAY_SIZE(s900_gpio_ports),
+	.padctl_arg2val = s900_pad_pinconf_arg2val,
+	.padctl_val2arg = s900_pad_pinconf_val2arg,
 };
 
 static int s900_pinctrl_probe(struct platform_device *pdev)
-- 
2.17.2