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mmc: omap_hsmmc: use platform_get_resource_byname for tx/rx DMA channels

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Git rid of hardcoded tx/rx DMA channels based on pdev->id
and use platform_get_resource_byname() to retrieve them
instead.

Signed-off-by: Balaji T K <balajitk@ti.com>
Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Tested-by: Venkatraman S <svenkatr@ti.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Balaji T K 2012-03-07 09:55:30 -05:00 committed by Chris Ball
parent f0cc9cf993
commit b7bf773b0e
1 changed files with 11 additions and 24 deletions
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35
drivers/mmc/host/omap_hsmmc.c
View File

@ -1981,32 +1981,19 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
omap_hsmmc_conf_bus_power(host); omap_hsmmc_conf_bus_power(host);
/* Select DMA lines */ res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "tx");
switch (host->id) { if (!res) {
case OMAP_MMC1_DEVID: dev_err(mmc_dev(host->mmc), "cannot get DMA TX channel\n");
host->dma_line_tx = OMAP24XX_DMA_MMC1_TX;
host->dma_line_rx = OMAP24XX_DMA_MMC1_RX;
break;
case OMAP_MMC2_DEVID:
host->dma_line_tx = OMAP24XX_DMA_MMC2_TX;
host->dma_line_rx = OMAP24XX_DMA_MMC2_RX;
break;
case OMAP_MMC3_DEVID:
host->dma_line_tx = OMAP34XX_DMA_MMC3_TX;
host->dma_line_rx = OMAP34XX_DMA_MMC3_RX;
break;
case OMAP_MMC4_DEVID:
host->dma_line_tx = OMAP44XX_DMA_MMC4_TX;
host->dma_line_rx = OMAP44XX_DMA_MMC4_RX;
break;
case OMAP_MMC5_DEVID:
host->dma_line_tx = OMAP44XX_DMA_MMC5_TX;
host->dma_line_rx = OMAP44XX_DMA_MMC5_RX;
break;
default:
dev_err(mmc_dev(host->mmc), "Invalid MMC id\n");
goto err_irq; goto err_irq;
} }
host->dma_line_tx = res->start;
res = platform_get_resource_byname(pdev, IORESOURCE_DMA, "rx");
if (!res) {
dev_err(mmc_dev(host->mmc), "cannot get DMA RX channel\n");
goto err_irq;
}
host->dma_line_rx = res->start;
/* Request IRQ for MMC operations */ /* Request IRQ for MMC operations */
ret = request_irq(host->irq, omap_hsmmc_irq, 0, ret = request_irq(host->irq, omap_hsmmc_irq, 0,