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Date: Wed, 29 Aug 2018 21:02:14 +0530
From: Manivannan Sadhasivam <manivannan.sadhasivam@...aro.org>
To: Saravanan Sekar <sravanhome@...il.com>
Cc: linus.walleij@...aro.org, robh+dt@...nel.org, mark.rutland@....com,
afaerber@...e.de, catalin.marinas@....com, will.deacon@....com,
linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
pn@...x.de, mp-cs@...ions-semi.com, jeff.chen@...ions-semi.com,
thomas.liau@...ions-semi.com, linux@...ietech.com
Subject: Re: [PATCH v5 2/5] pinctrl: actions: define pad control configurtion
to SoC specific
On Wed, Aug 29, 2018 at 10:24:10AM +0200, Saravanan Sekar wrote:
> 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 s700, s900 specific.
>
This patch is not adding anything for S700 so no need to mention it in
last line.
> Signed-off-by: Parthiban Nallathambi <pn@...x.de>
> Signed-off-by: Saravanan Sekar <sravanhome@...il.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..2e19fecbe5e9 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 owl_pinconf_pull {
Since this enum is SoC specific, it could be s900_pinconf_pull.
Regards,
Mani
> + 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)
> --
> 2.14.4
>
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