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Message-ID: <CALecT5iPf593eWUuHmia80cccQw+vMB4iqMqVvXQqywXpPKVnQ@mail.gmail.com>
Date: Wed, 11 Oct 2017 10:55:04 +0800
From: Yixun Lan <yixun.lan@...il.com>
To: Neil Armstrong <narmstrong@...libre.com>
Cc: Jerome Brunet <jbrunet@...libre.com>,
Linus Walleij <linus.walleij@...aro.org>,
Kevin Hilman <khilman@...libre.com>,
Carlo Caione <carlo@...one.org>, linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-amlogic@...ts.infradead.org
Subject: Re: [PATCH 1/2] pinctrl: meson: separate soc drivers
hi jerome:
On Mon, Oct 9, 2017 at 7:35 PM, Neil Armstrong <narmstrong@...libre.com> wrote:
> On 09/10/2017 12:17, Jerome Brunet wrote:
>> When meson pinctrl is enabled, all meson platforms pinctrl drivers are
>> built in the kernel, with a significant amount of data.
>>
>> This leads to situation where pinctrl drivers targeting an architecture
>> are also compiled and shipped on another one (ex: meson8 - ARM - compiled
>> and shipped on ARM64 builds). This is a waste of memory we can easily
>> avoid.
>>
>> This change makes 4 pinctrl drivers (1 per SoC) out the original single
>> driver, allowing to compile and ship only the ones required.
>>
>> Signed-off-by: Jerome Brunet <jbrunet@...libre.com>
>> ---
>> drivers/pinctrl/Kconfig | 11 +------
>> drivers/pinctrl/meson/Kconfig | 36 +++++++++++++++++++++
>> drivers/pinctrl/meson/Makefile | 8 +++--
>> drivers/pinctrl/meson/pinctrl-meson-gxbb.c | 25 +++++++++++++--
>> drivers/pinctrl/meson/pinctrl-meson-gxl.c | 25 +++++++++++++--
>> drivers/pinctrl/meson/pinctrl-meson.c | 51 ++----------------------------
>> drivers/pinctrl/meson/pinctrl-meson.h | 11 ++-----
>> drivers/pinctrl/meson/pinctrl-meson8.c | 25 +++++++++++++--
>> drivers/pinctrl/meson/pinctrl-meson8b.c | 25 +++++++++++++--
>> 9 files changed, 140 insertions(+), 77 deletions(-)
>> create mode 100644 drivers/pinctrl/meson/Kconfig
>>
>> diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
>> index 1778cf4f81c7..15b5b3b76ba9 100644
>> --- a/drivers/pinctrl/Kconfig
>> +++ b/drivers/pinctrl/Kconfig
>> @@ -167,16 +167,6 @@ config PINCTRL_MCP23S08
>> This provides a GPIO interface supporting inputs and outputs.
>> The I2C versions of the chips can be used as interrupt-controller.
>>
>> -config PINCTRL_MESON
>> - bool
>> - depends on OF
>> - select PINMUX
>> - select PINCONF
>> - select GENERIC_PINCONF
>> - select GPIOLIB
>> - select OF_GPIO
>> - select REGMAP_MMIO
>> -
>> config PINCTRL_OXNAS
>> bool
>> depends on OF
>> @@ -368,6 +358,7 @@ source "drivers/pinctrl/uniphier/Kconfig"
>> source "drivers/pinctrl/vt8500/Kconfig"
>> source "drivers/pinctrl/mediatek/Kconfig"
>> source "drivers/pinctrl/zte/Kconfig"
>> +source "drivers/pinctrl/meson/Kconfig"
>>
>> config PINCTRL_XWAY
>> bool
>> diff --git a/drivers/pinctrl/meson/Kconfig b/drivers/pinctrl/meson/Kconfig
>> new file mode 100644
>> index 000000000000..15655bfd39b6
>> --- /dev/null
>> +++ b/drivers/pinctrl/meson/Kconfig
>> @@ -0,0 +1,36 @@
>> +menuconfig PINCTRL_MESON
>> + bool "Amlogic SoC pinctrl drivers"
>> + depends on ARCH_MESON || COMPILE_TEST
>> + depends on OF
>> + select PINMUX
>> + select PINCONF
>> + select GENERIC_PINCONF
>> + select GPIOLIB
>> + select OF_GPIO
>> + select REGMAP_MMIO
>> + select PINMUX
>> + select GENERIC_PINCONF
>> +
>> +if PINCTRL_MESON
>> +
>> +config PINCTRL_MESON8
>> + bool "Meson 8 SoC pinctrl driver"
>> + depends on ARM
>> + default y
>> +
>> +config PINCTRL_MESON8B
>> + bool "Meson 8b SoC pinctrl driver"
>> + depends on ARM
>> + default y
>> +
>> +config PINCTRL_MESON_GXBB
>> + bool "Meson gxbb SoC pinctrl driver"
>> + depends on ARM64
>> + default y
>> +
>> +config PINCTRL_MESON_GXL
>> + bool "Meson gxl SoC pinctrl driver"
>> + depends on ARM64
>> + default y
>> +
>> +endif
>> diff --git a/drivers/pinctrl/meson/Makefile b/drivers/pinctrl/meson/Makefile
>> index 27c5b5126008..a6ef5ff4e9b1 100644
>> --- a/drivers/pinctrl/meson/Makefile
>> +++ b/drivers/pinctrl/meson/Makefile
>> @@ -1,3 +1,5 @@
>> -obj-y += pinctrl-meson8.o pinctrl-meson8b.o
>> -obj-y += pinctrl-meson-gxbb.o pinctrl-meson-gxl.o
>> -obj-y += pinctrl-meson.o
>> +obj-y += pinctrl-meson.o
>> +obj-$(CONFIG_PINCTRL_MESON8) += pinctrl-meson8.o
>> +obj-$(CONFIG_PINCTRL_MESON8B) += pinctrl-meson8b.o
>> +obj-$(CONFIG_PINCTRL_MESON_GXBB) += pinctrl-meson-gxbb.o
>> +obj-$(CONFIG_PINCTRL_MESON_GXL) += pinctrl-meson-gxl.o
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
>> index 1881d4a0eca2..a87bdb17414b 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
>> +++ b/drivers/pinctrl/meson/pinctrl-meson-gxbb.c
>> @@ -824,7 +824,7 @@ static struct meson_bank meson_gxbb_aobus_banks[] = {
>> BANK("AO", GPIOAO_0, GPIOAO_13, 0, 13, 0, 0, 0, 16, 0, 0, 0, 16, 1, 0),
>> };
>>
>> -struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = {
>> +static struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = {
>> .name = "periphs-banks",
>> .pins = meson_gxbb_periphs_pins,
>> .groups = meson_gxbb_periphs_groups,
>> @@ -836,7 +836,7 @@ struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data = {
>> .num_banks = ARRAY_SIZE(meson_gxbb_periphs_banks),
>> };
>>
>> -struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = {
>> .name = "aobus-banks",
>> .pins = meson_gxbb_aobus_pins,
>> .groups = meson_gxbb_aobus_groups,
>> @@ -847,3 +847,24 @@ struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data = {
>> .num_funcs = ARRAY_SIZE(meson_gxbb_aobus_functions),
>> .num_banks = ARRAY_SIZE(meson_gxbb_aobus_banks),
>> };
>> +
>> +static const struct of_device_id meson_gxbb_pinctrl_dt_match[] = {
>> + {
>> + .compatible = "amlogic,meson-gxbb-periphs-pinctrl",
>> + .data = &meson_gxbb_periphs_pinctrl_data,
>> + },
>> + {
>> + .compatible = "amlogic,meson-gxbb-aobus-pinctrl",
>> + .data = &meson_gxbb_aobus_pinctrl_data,
>> + },
>> + { },
>> +};
>> +
>> +static struct platform_driver meson_gxbb_pinctrl_driver = {
>> + .probe = meson_pinctrl_probe,
>> + .driver = {
>> + .name = "meson-gxbb-pinctrl",
>> + .of_match_table = meson_gxbb_pinctrl_dt_match,
>> + },
>> +};
>> +builtin_platform_driver(meson_gxbb_pinctrl_driver);
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxl.c b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
>> index 3a14ecae9f31..088ac94f76b0 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson-gxl.c
>> +++ b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
>> @@ -809,7 +809,7 @@ static struct meson_bank meson_gxl_aobus_banks[] = {
>> BANK("AO", GPIOAO_0, GPIOAO_9, 0, 9, 0, 0, 0, 16, 0, 0, 0, 16, 1, 0),
>> };
>>
>> -struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
>> +static struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
>> .name = "periphs-banks",
>> .pins = meson_gxl_periphs_pins,
>> .groups = meson_gxl_periphs_groups,
>> @@ -821,7 +821,7 @@ struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
>> .num_banks = ARRAY_SIZE(meson_gxl_periphs_banks),
>> };
>>
>> -struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = {
>> .name = "aobus-banks",
>> .pins = meson_gxl_aobus_pins,
>> .groups = meson_gxl_aobus_groups,
>> @@ -832,3 +832,24 @@ struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data = {
>> .num_funcs = ARRAY_SIZE(meson_gxl_aobus_functions),
>> .num_banks = ARRAY_SIZE(meson_gxl_aobus_banks),
>> };
>> +
>> +static const struct of_device_id meson_gxl_pinctrl_dt_match[] = {
>> + {
>> + .compatible = "amlogic,meson-gxl-periphs-pinctrl",
>> + .data = &meson_gxl_periphs_pinctrl_data,
>> + },
>> + {
>> + .compatible = "amlogic,meson-gxl-aobus-pinctrl",
>> + .data = &meson_gxl_aobus_pinctrl_data,
>> + },
>> + { },
>> +};
>> +
>> +static struct platform_driver meson_gxl_pinctrl_driver = {
>> + .probe = meson_pinctrl_probe,
>> + .driver = {
>> + .name = "meson-gxl-pinctrl",
>> + .of_match_table = meson_gxl_pinctrl_dt_match,
>> + },
>> +};
>> +builtin_platform_driver(meson_gxl_pinctrl_driver);
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson.c b/drivers/pinctrl/meson/pinctrl-meson.c
>> index 71bccb7acbf8..8fc1f1b45435 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson.c
>> +++ b/drivers/pinctrl/meson/pinctrl-meson.c
>> @@ -481,42 +481,6 @@ static int meson_gpio_get(struct gpio_chip *chip, unsigned gpio)
>> return !!(val & BIT(bit));
>> }
>>
>> -static const struct of_device_id meson_pinctrl_dt_match[] = {
>> - {
>> - .compatible = "amlogic,meson8-cbus-pinctrl",
>> - .data = &meson8_cbus_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson8b-cbus-pinctrl",
>> - .data = &meson8b_cbus_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson8-aobus-pinctrl",
>> - .data = &meson8_aobus_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson8b-aobus-pinctrl",
>> - .data = &meson8b_aobus_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson-gxbb-periphs-pinctrl",
>> - .data = &meson_gxbb_periphs_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson-gxbb-aobus-pinctrl",
>> - .data = &meson_gxbb_aobus_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson-gxl-periphs-pinctrl",
>> - .data = &meson_gxl_periphs_pinctrl_data,
>> - },
>> - {
>> - .compatible = "amlogic,meson-gxl-aobus-pinctrl",
>> - .data = &meson_gxl_aobus_pinctrl_data,
>> - },
>> - { },
>> -};
>> -
>> static int meson_gpiolib_register(struct meson_pinctrl *pc)
>> {
>> int ret;
>> @@ -624,7 +588,7 @@ static int meson_pinctrl_parse_dt(struct meson_pinctrl *pc,
>> return 0;
>> }
>>
>> -static int meson_pinctrl_probe(struct platform_device *pdev)
>> +int meson_pinctrl_probe(struct platform_device *pdev)
>> {
>> const struct of_device_id *match;
>> struct device *dev = &pdev->dev;
>> @@ -636,10 +600,10 @@ static int meson_pinctrl_probe(struct platform_device *pdev)
>> return -ENOMEM;
>>
>> pc->dev = dev;
>> - match = of_match_node(meson_pinctrl_dt_match, pdev->dev.of_node);
>> + match = of_match_node(dev->driver->of_match_table, dev->of_node);
>
>
> Minor comment, maybe you could use of_device_get_match_data(dev) here, it will be simpler.
>
with the of_device_get_match_data() been used, I've got this error, probably
you should add "#include <linux/of_device.h>" ?
AR drivers/base/built-in.o
drivers/pinctrl/meson/pinctrl-meson.c: In function ‘meson_pinctrl_probe’:
drivers/pinctrl/meson/pinctrl-meson.c:520:43: error: implicit
declaration of function ‘of_device_get_match_data’
[-Werror=implicit-function-declaration]
pc->data = (struct meson_pinctrl_data *) of_device_get_match_data(dev);
^~~~~~~~~~~~~~~~~~~~~~~~
drivers/pinctrl/meson/pinctrl-meson.c:520:13: warning: cast to pointer
from integer of different size [-Wint-to-pointer-cast]
pc->data = (struct meson_pinctrl_data *) of_device_get_match_data(dev);
^
>> pc->data = (struct meson_pinctrl_data *) match->data;
>>
>> - ret = meson_pinctrl_parse_dt(pc, pdev->dev.of_node);
>> + ret = meson_pinctrl_parse_dt(pc, dev->of_node);
>> if (ret)
>> return ret;
>>
>> @@ -659,12 +623,3 @@ static int meson_pinctrl_probe(struct platform_device *pdev)
>>
>> return meson_gpiolib_register(pc);
>> }
>> -
>> -static struct platform_driver meson_pinctrl_driver = {
>> - .probe = meson_pinctrl_probe,
>> - .driver = {
>> - .name = "meson-pinctrl",
>> - .of_match_table = meson_pinctrl_dt_match,
>> - },
>> -};
>> -builtin_platform_driver(meson_pinctrl_driver);
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson.h b/drivers/pinctrl/meson/pinctrl-meson.h
>> index 7ed0a80fd9dc..284157d43612 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson.h
>> +++ b/drivers/pinctrl/meson/pinctrl-meson.h
>> @@ -13,6 +13,7 @@
>>
>> #include <linux/gpio.h>
>> #include <linux/pinctrl/pinctrl.h>
>> +#include <linux/platform_device.h>
>> #include <linux/regmap.h>
>> #include <linux/types.h>
>>
>> @@ -165,11 +166,5 @@ struct meson_pinctrl {
>>
>> #define MESON_PIN(x) PINCTRL_PIN(x, #x)
>>
>> -extern struct meson_pinctrl_data meson8_cbus_pinctrl_data;
>> -extern struct meson_pinctrl_data meson8_aobus_pinctrl_data;
>> -extern struct meson_pinctrl_data meson8b_cbus_pinctrl_data;
>> -extern struct meson_pinctrl_data meson8b_aobus_pinctrl_data;
>> -extern struct meson_pinctrl_data meson_gxbb_periphs_pinctrl_data;
>> -extern struct meson_pinctrl_data meson_gxbb_aobus_pinctrl_data;
>> -extern struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data;
>> -extern struct meson_pinctrl_data meson_gxl_aobus_pinctrl_data;
>> +/* Common probe function */
>> +int meson_pinctrl_probe(struct platform_device *pdev);
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson8.c b/drivers/pinctrl/meson/pinctrl-meson8.c
>> index fbf8ecd1c2b6..68b345fc105a 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson8.c
>> +++ b/drivers/pinctrl/meson/pinctrl-meson8.c
>> @@ -1044,7 +1044,7 @@ static struct meson_bank meson8_aobus_banks[] = {
>> BANK("AO", GPIOAO_0, GPIO_TEST_N, 0, 13, 0, 0, 0, 16, 0, 0, 0, 16, 1, 0),
>> };
>>
>> -struct meson_pinctrl_data meson8_cbus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson8_cbus_pinctrl_data = {
>> .name = "cbus-banks",
>> .pins = meson8_cbus_pins,
>> .groups = meson8_cbus_groups,
>> @@ -1056,7 +1056,7 @@ struct meson_pinctrl_data meson8_cbus_pinctrl_data = {
>> .num_banks = ARRAY_SIZE(meson8_cbus_banks),
>> };
>>
>> -struct meson_pinctrl_data meson8_aobus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson8_aobus_pinctrl_data = {
>> .name = "ao-bank",
>> .pins = meson8_aobus_pins,
>> .groups = meson8_aobus_groups,
>> @@ -1067,3 +1067,24 @@ struct meson_pinctrl_data meson8_aobus_pinctrl_data = {
>> .num_funcs = ARRAY_SIZE(meson8_aobus_functions),
>> .num_banks = ARRAY_SIZE(meson8_aobus_banks),
>> };
>> +
>> +static const struct of_device_id meson8_pinctrl_dt_match[] = {
>> + {
>> + .compatible = "amlogic,meson8-cbus-pinctrl",
>> + .data = &meson8_cbus_pinctrl_data,
>> + },
>> + {
>> + .compatible = "amlogic,meson8-aobus-pinctrl",
>> + .data = &meson8_aobus_pinctrl_data,
>> + },
>> + { },
>> +};
>> +
>> +static struct platform_driver meson8_pinctrl_driver = {
>> + .probe = meson_pinctrl_probe,
>> + .driver = {
>> + .name = "meson8-pinctrl",
>> + .of_match_table = meson8_pinctrl_dt_match,
>> + },
>> +};
>> +builtin_platform_driver(meson8_pinctrl_driver);
>> diff --git a/drivers/pinctrl/meson/pinctrl-meson8b.c b/drivers/pinctrl/meson/pinctrl-meson8b.c
>> index 7af296db48c8..4d61df09bc3f 100644
>> --- a/drivers/pinctrl/meson/pinctrl-meson8b.c
>> +++ b/drivers/pinctrl/meson/pinctrl-meson8b.c
>> @@ -904,7 +904,7 @@ static struct meson_bank meson8b_aobus_banks[] = {
>> BANK("AO", GPIOAO_0, GPIO_TEST_N, 0, 13, 0, 0, 0, 16, 0, 0, 0, 16, 1, 0),
>> };
>>
>> -struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
>> .name = "cbus-banks",
>> .pins = meson8b_cbus_pins,
>> .groups = meson8b_cbus_groups,
>> @@ -916,7 +916,7 @@ struct meson_pinctrl_data meson8b_cbus_pinctrl_data = {
>> .num_banks = ARRAY_SIZE(meson8b_cbus_banks),
>> };
>>
>> -struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
>> +static struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
>> .name = "aobus-banks",
>> .pins = meson8b_aobus_pins,
>> .groups = meson8b_aobus_groups,
>> @@ -927,3 +927,24 @@ struct meson_pinctrl_data meson8b_aobus_pinctrl_data = {
>> .num_funcs = ARRAY_SIZE(meson8b_aobus_functions),
>> .num_banks = ARRAY_SIZE(meson8b_aobus_banks),
>> };
>> +
>> +static const struct of_device_id meson8b_pinctrl_dt_match[] = {
>> + {
>> + .compatible = "amlogic,meson8b-cbus-pinctrl",
>> + .data = &meson8b_cbus_pinctrl_data,
>> + },
>> + {
>> + .compatible = "amlogic,meson8b-aobus-pinctrl",
>> + .data = &meson8b_aobus_pinctrl_data,
>> + },
>> + { },
>> +};
>> +
>> +static struct platform_driver meson8b_pinctrl_driver = {
>> + .probe = meson_pinctrl_probe,
>> + .driver = {
>> + .name = "meson8b-pinctrl",
>> + .of_match_table = meson8b_pinctrl_dt_match,
>> + },
>> +};
>> +builtin_platform_driver(meson8b_pinctrl_driver);
>>
>
> Apart the comment on of_device_get_match_data() :
>
> Reviewed-by: Neil Armstrong <narmstrong@...libre.com>
>
> _______________________________________________
> linux-amlogic mailing list
> linux-amlogic@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-amlogic
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