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[92.34.204.253]) by smtp.gmail.com with ESMTPSA id x28-20020a19e01c000000b0047255d21138sm1105819lfg.103.2022.05.07.05.47.38 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 07 May 2022 05:47:39 -0700 (PDT) From: Linus Walleij To: Sekhar Nori , Bartosz Golaszewski Cc: linux-arm-kernel@lists.infradead.org, linux-gpio@vger.kernel.org, Arnd Bergmann , Linus Walleij Subject: [PATCH 1/2 v7] ARM: davinci: dm644x: Convert LEDs to GPIO descriptor table Date: Sat, 7 May 2022 14:45:35 +0200 Message-Id: <20220507124536.171930-1-linus.walleij@linaro.org> X-Mailer: git-send-email 2.35.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-gpio@vger.kernel.org This converts the DaVinci DM644x LEDs to use GPIO descriptor look-ups. Cc: Sekhar Nori Cc: Bartosz Golaszewski Reviewed-by: Bartosz Golaszewski Signed-off-by: Linus Walleij --- ChangeLog v6->v7: - Rebase in v5.18-rc1 ChangeLog v5->v6: - Rebase on v5.14-rc1 ChangeLog v4->v5: - Name each I2C expander instance explicitly as "u2" etc. - Tie the LEDs to the generated "i2c-u2" device name. ChangeLog v3->v4: - Rebase on v5.13-rc1 - Resend - LED maintainers: please apply this patch, it is ACKed by a DaVinci maintainer ChangeLog v2->v3: - Rebase on v5.10-rc1 - Resend ChangeLog v1->v2: - Collect Bartosz' review tag - Rebase on v5.9-rc1 - Resend --- arch/arm/mach-davinci/board-dm644x-evm.c | 49 ++++++++++++++++-------- 1 file changed, 33 insertions(+), 16 deletions(-) diff --git a/arch/arm/mach-davinci/board-dm644x-evm.c b/arch/arm/mach-davinci/board-dm644x-evm.c index cce3a621eb20..36d8eea7a342 100644 --- a/arch/arm/mach-davinci/board-dm644x-evm.c +++ b/arch/arm/mach-davinci/board-dm644x-evm.c @@ -319,17 +319,14 @@ static struct platform_device rtc_dev = { /* U2 -- LEDs */ static struct gpio_led evm_leds[] = { - { .name = "DS8", .active_low = 1, - .default_trigger = "heartbeat", }, - { .name = "DS7", .active_low = 1, }, - { .name = "DS6", .active_low = 1, }, - { .name = "DS5", .active_low = 1, }, - { .name = "DS4", .active_low = 1, }, - { .name = "DS3", .active_low = 1, }, - { .name = "DS2", .active_low = 1, - .default_trigger = "mmc0", }, - { .name = "DS1", .active_low = 1, - .default_trigger = "disk-activity", }, + { .name = "DS8", .default_trigger = "heartbeat", }, + { .name = "DS7", }, + { .name = "DS6", }, + { .name = "DS5", }, + { .name = "DS4", }, + { .name = "DS3", }, + { .name = "DS2", .default_trigger = "mmc0", }, + { .name = "DS1", .default_trigger = "disk-activity", }, }; static const struct gpio_led_platform_data evm_led_data = { @@ -337,18 +334,35 @@ static const struct gpio_led_platform_data evm_led_data = { .leds = evm_leds, }; +static struct gpiod_lookup_table evm_leds_gpio_table = { + .dev_id = "leds-gpio.0", + .table = { + /* + * These GPIOs are on a PCF8574 GPIO expander, which + * is in turn named after the I2C device name. This is + * device "u2" on I2C bus 1 with address 0x38. + */ + GPIO_LOOKUP_IDX("i2c-u2", 0, NULL, 0, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 1, NULL, 1, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 2, NULL, 2, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 3, NULL, 3, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 4, NULL, 4, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 5, NULL, 5, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 6, NULL, 6, GPIO_ACTIVE_LOW), + GPIO_LOOKUP_IDX("i2c-u2", 7, NULL, 7, GPIO_ACTIVE_LOW), + { }, + }, +}; + static struct platform_device *evm_led_dev; static int evm_led_setup(struct i2c_client *client, int gpio, unsigned ngpio, void *c) { - struct gpio_led *leds = evm_leds; int status; - while (ngpio--) { - leds->gpio = gpio++; - leds++; - } + /* Add the lookup table */ + gpiod_add_lookup_table(&evm_leds_gpio_table); /* what an extremely annoying way to be forced to handle * device unregistration ... @@ -639,14 +653,17 @@ static struct i2c_board_info __initdata i2c_info[] = { }, { I2C_BOARD_INFO("pcf8574", 0x38), + .dev_name = "u2", .platform_data = &pcf_data_u2, }, { I2C_BOARD_INFO("pcf8574", 0x39), + .dev_name = "u18", .platform_data = &pcf_data_u18, }, { I2C_BOARD_INFO("pcf8574", 0x3a), + .dev_name = "u35", .platform_data = &pcf_data_u35, }, {