Re: [PATCH v4 2/4] pinctrl: meson: add a new callback for SoCs fixup

From: Jerome Brunet
Date: Mon Nov 04 2019 - 02:59:32 EST

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On Fri 25 Oct 2019 at 13:49, Qianggui Song <qianggui.song@xxxxxxxxxxx> wrote:

> In meson_pinctrl_parse_dt, it contains two parts: reg parsing and
> SoC relative fixup for AO. Several fixups in the same code make it hard
> to maintain, so move all fixups to each SoC's callback and make
> meson_pinctrl_parse_dt just do the reg parsing, separate these two
> parts.Overview of all current Meson SoCs fixup is as below:
>
> +------+--------------------------------------+--------------------------+
> | | | |
> | SoC | EE domain | AO domain |
> +------+--------------------------------------+--------------------------+
> |m8 | parse regs: | parse regs: |
> |m8b | gpio,mux,pull,pull-enable(skip ds) | gpio,mux,pull(skip ds)|
> |gxl | fixup: | fixup: |
> |gxbb | no | pull-enable = pull |
> |axg | | |
> +------+--------------------------------------+--------------------------+
> |g12a | parse regs: | parse regs: |
> |sm1 | gpio,mux,pull,pull-enable,ds | gpio,mux,ds |
> | | fixup: | fixup: |
> | | no | pull = gpio |
> | | | pull-enable = gpio |
> +------+--------------------------------------+--------------------------+
> |a1 or | parse regs: |
> |later | gpio/mux (without ao domain) |
> |SoCs | fixup: |
> | | pull=gpio; pull-enable=gpio; ds=gpio |
> +------+-----------------------------------------------------------------+
>
> Signed-off-by: Qianggui Song <qianggui.song@xxxxxxxxxxx>
> ---
> drivers/pinctrl/meson/pinctrl-meson-axg.c | 11 +++++++++++
> drivers/pinctrl/meson/pinctrl-meson-g12a.c | 9 +++++++++
> drivers/pinctrl/meson/pinctrl-meson-gxbb.c | 11 +++++++++++
> drivers/pinctrl/meson/pinctrl-meson-gxl.c | 11 +++++++++++
> drivers/pinctrl/meson/pinctrl-meson.c | 9 +++++----
> drivers/pinctrl/meson/pinctrl-meson.h | 3 +++
> drivers/pinctrl/meson/pinctrl-meson8.c | 11 +++++++++++
> drivers/pinctrl/meson/pinctrl-meson8b.c | 11 +++++++++++
> 8 files changed, 72 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/pinctrl/meson/pinctrl-meson-axg.c b/drivers/pinctrl/meson/pinctrl-meson-axg.c
> index ad502eda4afa..9c07f4423c37 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson-axg.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson-axg.c
> @@ -1040,6 +1040,16 @@
> .num_pmx_banks = ARRAY_SIZE(meson_axg_aobus_pmx_banks),
> };
>
> +static int meson_axg_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + if (!pc->reg_pull)
> + return -EINVAL;
> +
> + pc->reg_pullen = pc->reg_pull;
> +
> + return 0;
> +}
> +
> static struct meson_pinctrl_data meson_axg_periphs_pinctrl_data = {
> .name = "periphs-banks",
> .pins = meson_axg_periphs_pins,
> @@ -1066,6 +1076,7 @@
> .num_banks = ARRAY_SIZE(meson_axg_aobus_banks),
> .pmx_ops = &meson_axg_pmx_ops,
> .pmx_data = &meson_axg_aobus_pmx_banks_data,
> + .parse_dt = meson_axg_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson_axg_pinctrl_dt_match[] = {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson-g12a.c b/drivers/pinctrl/meson/pinctrl-meson-g12a.c
> index 582665fd362a..41850e3c0091 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson-g12a.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson-g12a.c
> @@ -1362,6 +1362,14 @@
> .num_pmx_banks = ARRAY_SIZE(meson_g12a_aobus_pmx_banks),
> };
>
> +static int meson_g12a_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + pc->reg_pull = pc->reg_gpio;
> + pc->reg_pullen = pc->reg_gpio;
> +
> + return 0;
> +}
> +
> static struct meson_pinctrl_data meson_g12a_periphs_pinctrl_data = {
> .name = "periphs-banks",
> .pins = meson_g12a_periphs_pins,
> @@ -1388,6 +1396,7 @@
> .num_banks = ARRAY_SIZE(meson_g12a_aobus_banks),
> .pmx_ops = &meson_axg_pmx_ops,
> .pmx_data = &meson_g12a_aobus_pmx_banks_data,
> + .parse_dt = meson_g12a_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson_g12a_pinctrl_dt_match[] = {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
> index 5bfa56f3847e..f5494a948200 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
> @@ -827,6 +827,16 @@
> BANK("AO", GPIOAO_0, GPIOAO_13, 0, 13, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
> };
>
> +static int meson_gxbb_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + if (!pc->reg_pull)
> + return -EINVAL;
> +
> + pc->reg_pullen = pc->reg_pull;
> +
> + return 0;
> +}

Can you share the definition of this function instead of repeating it ?

> +
> static struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = {
> .name = "periphs-banks",
> .pins = meson_gxbb_periphs_pins,
> @@ -851,6 +861,7 @@
> .num_funcs = ARRAY_SIZE(meson_gxbb_aobus_functions),
> .num_banks = ARRAY_SIZE(meson_gxbb_aobus_banks),
> .pmx_ops = &meson8_pmx_ops,
> + .parse_dt = meson_gxbb_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson_gxbb_pinctrl_dt_match[] = {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxl.c b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
> index 72c5373c8dc1..943fb27dab08 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson-gxl.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
> @@ -796,6 +796,16 @@
> BANK("AO", GPIOAO_0, GPIOAO_9, 0, 9, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
> };
>
> +static int meson_gxl_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + if (!pc->reg_pull)
> + return -EINVAL;
> +
> + pc->reg_pullen = pc->reg_pull;
> +
> + return 0;
> +}

Same

> +
> static struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
> .name = "periphs-banks",
> .pins = meson_gxl_periphs_pins,
> @@ -820,6 +830,7 @@
> .num_funcs = ARRAY_SIZE(meson_gxl_aobus_functions),
> .num_banks = ARRAY_SIZE(meson_gxl_aobus_banks),
> .pmx_ops = &meson8_pmx_ops,
> + .parse_dt = meson_gxl_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson_gxl_pinctrl_dt_match[] = {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
> index 8bba9d053d9f..e182583422a4 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson.c
> @@ -677,14 +677,12 @@ static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc,
> }
>
> pc->reg_pull = meson_map_resource(pc, gpio_np, "pull");
> - /* Use gpio region if pull one is not present */
> if (IS_ERR(pc->reg_pull))
> - pc->reg_pull = pc->reg_gpio;
> + pc->reg_pull = NULL;

Instead of doing this fixup, could modifhy meson_map_ressourse() to
return NULL instead of -ENOENT ?

Then you should IS_ERR_OR_NULL() for "mux" and "gpio" and just IS_ERR()
for the rest

>
> pc->reg_pullen = meson_map_resource(pc, gpio_np, "pull-enable");
> - /* Use pull region if pull-enable one is not present */
> if (IS_ERR(pc->reg_pullen))
> - pc->reg_pullen = pc->reg_pull;
> + pc->reg_pullen = NULL;
>
> pc->reg_ds = meson_map_resource(pc, gpio_np, "ds");
> if (IS_ERR(pc->reg_ds)) {
> @@ -692,6 +690,9 @@ static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc,
> pc->reg_ds = NULL;
> }
>
> + if (pc->data->parse_dt)
> + return pc->data->parse_dt(pc);
> +
> return 0;
> }
>
> diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
> index c696f3241a36..d570f7c53045 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson.h
> +++ b/drivers/pinctrl/meson/pinctrl-meson.h
> @@ -11,6 +11,8 @@
> #include <linux/regmap.h>
> #include <linux/types.h>
>
> +struct meson_pinctrl;
> +
> /**
> * struct meson_pmx_group - a pinmux group
> *
> @@ -114,6 +116,7 @@ struct meson_pinctrl_data {
> unsigned int num_banks;
> const struct pinmux_ops *pmx_ops;
> void *pmx_data;
> + int (*parse_dt)(struct meson_pinctrl *pc);
> };
>
> struct meson_pinctrl {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson8.c b/drivers/pinctrl/meson/pinctrl-meson8.c
> index 0b97befa6335..65c70c9b7070 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson8.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson8.c
> @@ -1079,6 +1079,16 @@
> BANK("AO", GPIOAO_0, GPIO_TEST_N, 0, 13, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
> };
>
> +static int meson8_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + if (!pc->reg_pull)
> + return -EINVAL;
> +
> + pc->reg_pullen = pc->reg_pull;
> +
> + return 0;
> +}
> +
> static struct meson_pinctrl_data meson8_cbus_pinctrl_data = {
> .name = "cbus-banks",
> .pins = meson8_cbus_pins,
> @@ -1103,6 +1113,7 @@
> .num_funcs = ARRAY_SIZE(meson8_aobus_functions),
> .num_banks = ARRAY_SIZE(meson8_aobus_banks),
> .pmx_ops = &meson8_pmx_ops,
> + .parse_dt = &meson8_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson8_pinctrl_dt_match[] = {
> diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
> index a7de388388e6..85dc12e0c839 100644
> --- a/drivers/pinctrl/meson/pinctrl-meson8b.c
> +++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
> @@ -938,6 +938,16 @@
> BANK("AO", GPIOAO_0, GPIO_TEST_N, 0, 13, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
> };
>
> +static int meson8b_aobus_parse_dt_extra(struct meson_pinctrl *pc)
> +{
> + if (!pc->reg_pull)
> + return -EINVAL;
> +
> + pc->reg_pullen = pc->reg_pull;
> +
> + return 0;
> +}
> +
> static struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
> .name = "cbus-banks",
> .pins = meson8b_cbus_pins,
> @@ -962,6 +972,7 @@
> .num_funcs = ARRAY_SIZE(meson8b_aobus_functions),
> .num_banks = ARRAY_SIZE(meson8b_aobus_banks),
> .pmx_ops = &meson8_pmx_ops,
> + .parse_dt = &meson8b_aobus_parse_dt_extra,
> };
>
> static const struct of_device_id meson8b_pinctrl_dt_match[] = {

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Next in thread: Qianggui Song: "Re: [PATCH v4 2/4] pinctrl: meson: add a new callback for SoCs fixup"
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