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ARM: pxa/lubbock: Replace custom ->cs_control() by GPIO lookup table 

SPI PXA2xx driver supports GPIO chipselect by querying for known
GPIO connection ID. Replace custom ->cs_control() by GPIO table,
so the driver will use generic approach on this platform.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20211123192723.44537-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Andy Shevchenko 2021-11-23 21:27:21 +02:00 committed by Mark Brown
parent f89d2cc396
commit 342e3ce0f6
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 9 additions and 6 deletions
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15
arch/arm/mach-pxa/lubbock.c
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@ -211,16 +211,17 @@ static struct ads7846_platform_data ads_info = {
// .y_plate_ohms = 500, /* GUESS! */
};
static void ads7846_cs(u32 command)
{
static const unsigned TS_nCS = 1 << 11;
lubbock_set_misc_wr(TS_nCS, (command == PXA2XX_CS_ASSERT) ? 0 : TS_nCS);
}
static struct gpiod_lookup_table ads7846_cs_gpios = {
.dev_id = "ads7846",
.table = {
GPIO_LOOKUP("lubbock", 11, "cs", GPIO_ACTIVE_LOW),
{}
},
};
static struct pxa2xx_spi_chip ads_hw = {
.tx_threshold = 1,
.rx_threshold = 2,
.cs_control = ads7846_cs,
};
static struct spi_board_info spi_board_info[] __initdata = { {
@ -512,6 +513,8 @@ static void __init lubbock_init(void)
lubbock_flash_data[flashboot].name = "boot-rom";
(void) platform_add_devices(devices, ARRAY_SIZE(devices));
gpiod_add_lookup_table(&ads7846_cs_gpios);
pxa2xx_set_spi_info(1, &pxa_ssp_master_info);
spi_register_board_info(spi_board_info, ARRAY_SIZE(spi_board_info));
}