diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/eeprom/digsy_mtc_eeprom.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/misc/eeprom/digsy_mtc_eeprom.c b/drivers/misc/eeprom/digsy_mtc_eeprom.c index 66d9e1baeae5..fbde2516c04f 100644 --- a/drivers/misc/eeprom/digsy_mtc_eeprom.c +++ b/drivers/misc/eeprom/digsy_mtc_eeprom.c @@ -7,9 +7,18 @@ * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. + * + * FIXME: this driver is used on a device-tree probed platform: it + * should be defined as a bit-banged SPI device and probed from the device + * tree and not like this with static grabbing of a few numbered GPIO + * lines at random. + * + * Add proper SPI and EEPROM in arch/powerpc/boot/dts/digsy_mtc.dts + * and delete this driver. */ #include <linux/gpio.h> +#include <linux/gpio/machine.h> #include <linux/init.h> #include <linux/platform_device.h> #include <linux/spi/spi.h> @@ -42,9 +51,6 @@ struct eeprom_93xx46_platform_data digsy_mtc_eeprom_data = { }; static struct spi_gpio_platform_data eeprom_spi_gpio_data = { - .sck = GPIO_EEPROM_CLK, - .mosi = GPIO_EEPROM_DI, - .miso = GPIO_EEPROM_DO, .num_chipselect = 1, }; @@ -56,6 +62,21 @@ static struct platform_device digsy_mtc_eeprom = { }, }; +static struct gpiod_lookup_table eeprom_spi_gpiod_table = { + .dev_id = "spi_gpio", + .table = { + GPIO_LOOKUP("gpio@b00", GPIO_EEPROM_CLK, + "sck", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("gpio@b00", GPIO_EEPROM_DI, + "mosi", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("gpio@b00", GPIO_EEPROM_DO, + "miso", GPIO_ACTIVE_HIGH), + GPIO_LOOKUP("gpio@b00", GPIO_EEPROM_CS, + "cs", GPIO_ACTIVE_HIGH), + { }, + }, +}; + static struct spi_board_info digsy_mtc_eeprom_info[] __initdata = { { .modalias = "93xx46", @@ -63,7 +84,6 @@ static struct spi_board_info digsy_mtc_eeprom_info[] __initdata = { .bus_num = EE_SPI_BUS_NUM, .chip_select = 0, .mode = SPI_MODE_0, - .controller_data = (void *)GPIO_EEPROM_CS, .platform_data = &digsy_mtc_eeprom_data, }, }; @@ -78,6 +98,7 @@ static int __init digsy_mtc_eeprom_devices_init(void) pr_err("can't request gpio %d\n", GPIO_EEPROM_OE); return ret; } + gpiod_add_lookup_table(&eeprom_spi_gpiod_table); spi_register_board_info(digsy_mtc_eeprom_info, ARRAY_SIZE(digsy_mtc_eeprom_info)); return platform_device_register(&digsy_mtc_eeprom); |