ata: pata_ep93xx: use soc_device_match for UDMA modes
Replace ep93xx_chip_revision() with soc_device_match(), so ep93xx_chip_revision() can be safetly dropped from exported functions. Signed-off-by: Nikita Shubin <nikita.shubin@maquefel.me> Reviewed-by: Sergey Shtylyov <s.shtylyov@omp.ru> Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
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@ -40,6 +40,7 @@
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#include <linux/ata.h>
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#include <linux/libata.h>
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#include <linux/platform_device.h>
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#include <linux/sys_soc.h>
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#include <linux/delay.h>
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#include <linux/dmaengine.h>
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#include <linux/ktime.h>
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@ -910,6 +911,12 @@ static struct ata_port_operations ep93xx_pata_port_ops = {
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.port_start = ep93xx_pata_port_start,
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};
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static const struct soc_device_attribute ep93xx_soc_table[] = {
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{ .revision = "E1", .data = (void *)ATA_UDMA3 },
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{ .revision = "E2", .data = (void *)ATA_UDMA4 },
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{ /* sentinel */ }
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};
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static int ep93xx_pata_probe(struct platform_device *pdev)
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{
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struct ep93xx_pata_data *drv_data;
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@ -976,12 +983,11 @@ static int ep93xx_pata_probe(struct platform_device *pdev)
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* so this driver supports only UDMA modes.
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*/
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if (drv_data->dma_rx_channel && drv_data->dma_tx_channel) {
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int chip_rev = ep93xx_chip_revision();
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const struct soc_device_attribute *match;
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if (chip_rev == EP93XX_CHIP_REV_E1)
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ap->udma_mask = ATA_UDMA3;
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else if (chip_rev == EP93XX_CHIP_REV_E2)
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ap->udma_mask = ATA_UDMA4;
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match = soc_device_match(ep93xx_soc_table);
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if (match)
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ap->udma_mask = (unsigned int) match->data;
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else
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ap->udma_mask = ATA_UDMA2;
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}
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