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spi: atmel: Remove platform data support

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This driver is now only used through the device tree. Simplify code
by explicitly depend on device tree.

Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Link: https://lore.kernel.org/r/20191017141846.7523-6-gregory.clement@bootlin.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Gregory CLEMENT 2019-10-17 16:18:44 +02:00 committed by Mark Brown
parent 60086e23e6
commit 1cb84b02bf
No known key found for this signature in database
GPG key ID: 24D68B725D5487D0
2 changed files with 3 additions and 14 deletions
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1
drivers/spi/Kconfig
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@ -80,6 +80,7 @@ config SPI_ARMADA_3700
config SPI_ATMEL
tristate "Atmel SPI Controller"
depends on ARCH_AT91 || COMPILE_TEST
depends on OF
help
This selects a driver for the Atmel SPI Controller, present on
many AT91 ARM chips.

16
drivers/spi/spi-atmel.c
View file

@ -1500,7 +1500,7 @@ static int atmel_spi_probe(struct platform_device *pdev)
master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16);
master->dev.of_node = pdev->dev.of_node;
master->bus_num = pdev->id;
master->num_chipselect = master->dev.of_node ? 0 : 4;
master->num_chipselect = 4;
master->setup = atmel_spi_setup;
master->flags = (SPI_MASTER_MUST_RX | SPI_MASTER_MUST_TX);
master->transfer_one_message = atmel_spi_transfer_one_message;
@ -1528,16 +1528,6 @@ static int atmel_spi_probe(struct platform_device *pdev)
atmel_get_caps(as);
/*
* If there are chip selects in the device tree, those will be
* discovered by the SPI core when registering the SPI master
* and assigned to each SPI device.
*/
if (atmel_spi_is_v2(as) &&
pdev->dev.of_node &&
!of_get_property(pdev->dev.of_node, "cs-gpios", NULL))
master->num_chipselect = 4;
as->use_dma = false;
as->use_pdc = false;
if (as->caps.has_dma_support) {
@ -1745,20 +1735,18 @@ static const struct dev_pm_ops atmel_spi_pm_ops = {
#define ATMEL_SPI_PM_OPS NULL
#endif
#if defined(CONFIG_OF)
static const struct of_device_id atmel_spi_dt_ids[] = {
{ .compatible = "atmel,at91rm9200-spi" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, atmel_spi_dt_ids);
#endif
static struct platform_driver atmel_spi_driver = {
.driver = {
.name = "atmel_spi",
.pm = ATMEL_SPI_PM_OPS,
.of_match_table = of_match_ptr(atmel_spi_dt_ids),
.of_match_table = atmel_spi_dt_ids,
},
.probe = atmel_spi_probe,
.remove = atmel_spi_remove,