From: Nikita Shubin nikita.shubin@maquefel.me
- Add OF ID match table - Drop ep93xx_chip_revision and use soc_device_match instead
Signed-off-by: Nikita Shubin nikita.shubin@maquefel.me --- drivers/ata/pata_ep93xx.c | 26 ++++++++++++++++++++------ 1 file changed, 20 insertions(+), 6 deletions(-)
diff --git a/drivers/ata/pata_ep93xx.c b/drivers/ata/pata_ep93xx.c index c6e043e05d43..a88824dfc5fa 100644 --- a/drivers/ata/pata_ep93xx.c +++ b/drivers/ata/pata_ep93xx.c @@ -40,9 +40,11 @@ #include <linux/ata.h> #include <linux/libata.h> #include <linux/platform_device.h> +#include <linux/sys_soc.h> #include <linux/delay.h> #include <linux/dmaengine.h> #include <linux/ktime.h> +#include <linux/mod_devicetable.h>
#include <linux/platform_data/dma-ep93xx.h> #include <linux/soc/cirrus/ep93xx.h> @@ -910,6 +912,12 @@ static struct ata_port_operations ep93xx_pata_port_ops = { .port_start = ep93xx_pata_port_start, };
+static const struct soc_device_attribute ep93xx_soc_table[] = { + { .revision = "E1", .data = (void *)ATA_UDMA3 }, + { .revision = "E2", .data = (void *)ATA_UDMA4 }, + { /* sentinel */ } +}; + static int ep93xx_pata_probe(struct platform_device *pdev) { struct ep93xx_pata_data *drv_data; @@ -939,7 +947,7 @@ static int ep93xx_pata_probe(struct platform_device *pdev)
drv_data = devm_kzalloc(&pdev->dev, sizeof(*drv_data), GFP_KERNEL); if (!drv_data) { - err = -ENXIO; + err = -ENOMEM; goto err_rel_gpio; }
@@ -976,12 +984,11 @@ static int ep93xx_pata_probe(struct platform_device *pdev) * so this driver supports only UDMA modes. */ if (drv_data->dma_rx_channel && drv_data->dma_tx_channel) { - int chip_rev = ep93xx_chip_revision(); + const struct soc_device_attribute *match;
- if (chip_rev == EP93XX_CHIP_REV_E1) - ap->udma_mask = ATA_UDMA3; - else if (chip_rev == EP93XX_CHIP_REV_E2) - ap->udma_mask = ATA_UDMA4; + match = soc_device_match(ep93xx_soc_table); + if (match) + ap->udma_mask = (unsigned int) match->data; else ap->udma_mask = ATA_UDMA2; } @@ -1016,9 +1023,16 @@ static int ep93xx_pata_remove(struct platform_device *pdev) return 0; }
+static const struct of_device_id ep93xx_pata_of_ids[] = { + { .compatible = "cirrus,ep9312-pata" }, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, ep93xx_pata_of_ids); + static struct platform_driver ep93xx_pata_platform_driver = { .driver = { .name = DRV_NAME, + .of_match_table = ep93xx_pata_of_ids, }, .probe = ep93xx_pata_probe, .remove = ep93xx_pata_remove,