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AT91 MMC 2 : Use platform resources 

Use the I/O base-address and IRQ passed to the driver via the
platform_device resources instead of using hardcoded values.

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: Pierre Ossman <drzeus@drzeus.cx>
This commit is contained in:
Andrew Victor 2006-10-23 14:44:40 +02:00 committed by Pierre Ossman
parent e0b19b8365
commit 17ea0595f4
1 changed files with 34 additions and 7 deletions
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41
drivers/mmc/at91_mci.c
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@ -101,6 +101,7 @@ struct at91mci_host
struct mmc_request *request;
void __iomem *baseaddr;
int irq;
struct at91_mmc_data *board;
int present;
@ -792,13 +793,22 @@ static int at91_mci_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
struct at91mci_host *host;
struct resource *res;
int ret;
pr_debug("Probe MCI devices\n");
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res)
return -ENXIO;
if (!request_mem_region(res->start, res->end - res->start + 1, DRIVER_NAME))
return -EBUSY;
mmc = mmc_alloc_host(sizeof(struct at91mci_host), &pdev->dev);
if (!mmc) {
pr_debug("Failed to allocate mmc host\n");
release_mem_region(res->start, res->end - res->start + 1);
return -ENOMEM;
}
@ -828,27 +838,40 @@ static int at91_mci_probe(struct platform_device *pdev)
if (IS_ERR(mci_clk)) {
printk(KERN_ERR "AT91 MMC: no clock defined.\n");
mmc_free_host(mmc);
release_mem_region(res->start, res->end - res->start + 1);
return -ENODEV;
}
clk_enable(mci_clk); /* Enable the peripheral clock */
host->baseaddr = (void __iomem *)AT91_VA_BASE_MCI;
/*
* Map I/O region
*/
host->baseaddr = ioremap(res->start, res->end - res->start + 1);
if (!host->baseaddr) {
clk_put(mci_clk);
mmc_free_host(mmc);
release_mem_region(res->start, res->end - res->start + 1);
return -ENOMEM;
}
/*
* Reset hardware
*/
clk_enable(mci_clk); /* Enable the peripheral clock */
at91_mci_disable(host);
at91_mci_enable(host);
/*
* Allocate the MCI interrupt
*/
ret = request_irq(AT91RM9200_ID_MCI, at91_mci_irq, IRQF_SHARED, DRIVER_NAME, host);
host->irq = platform_get_irq(pdev, 0);
ret = request_irq(host->irq, at91_mci_irq, IRQF_SHARED, DRIVER_NAME, host);
if (ret) {
printk(KERN_ERR "Failed to request MCI interrupt\n");
clk_disable(mci_clk);
clk_put(mci_clk);
mmc_free_host(mmc);
iounmap(host->baseaddr);
release_mem_region(res->start, res->end - res->start + 1);
return ret;
}
@ -886,6 +909,7 @@ static int at91_mci_remove(struct platform_device *pdev)
{
struct mmc_host *mmc = platform_get_drvdata(pdev);
struct at91mci_host *host;
struct resource *res;
if (!mmc)
return -1;
@ -897,16 +921,19 @@ static int at91_mci_remove(struct platform_device *pdev)
cancel_delayed_work(&host->mmc->detect);
}
mmc_remove_host(mmc);
at91_mci_disable(host);
free_irq(AT91RM9200_ID_MCI, host);
mmc_free_host(mmc);
mmc_remove_host(mmc);
free_irq(host->irq, host);
clk_disable(mci_clk); /* Disable the peripheral clock */
clk_put(mci_clk);
platform_set_drvdata(pdev, NULL);
iounmap(host->baseaddr);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(res->start, res->end - res->start + 1);
mmc_free_host(mmc);
platform_set_drvdata(pdev, NULL);
pr_debug("MCI Removed\n");
return 0;