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mmc: pxa-mci: add DT bindings 

Signed-off-by: Daniel Mack <zonque@gmail.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
This commit is contained in:
Daniel Mack 2012-07-28 12:07:34 +02:00 committed by Chris Ball
parent 75b53aee2f
commit e6027b467c
2 changed files with 77 additions and 0 deletions
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25
Documentation/devicetree/bindings/mmc/pxa-mmc.txt Normal file
View File

@ -0,0 +1,25 @@
* PXA MMC drivers
Driver bindings for the PXA MCI (MMC/SDIO) interfaces
Required properties:
- compatible: Should be "marvell,pxa-mmc".
- vmmc-supply: A regulator for VMMC
Optional properties:
- marvell,detect-delay-ms: sets the detection delay timeout in ms.
- marvell,gpio-power: GPIO spec for the card power enable pin
This file documents differences between the core properties in mmc.txt
and the properties used by the pxa-mmc driver.
Examples:
mmc0: mmc@41100000 {
compatible = "marvell,pxa-mmc";
reg = <0x41100000 0x1000>;
interrupts = <23>;
cd-gpios = <&gpio 23 0>;
wp-gpios = <&gpio 24 0>;
};

52
drivers/mmc/host/pxamci.c
View File

@ -30,6 +30,9 @@
#include <linux/regulator/consumer.h>
#include <linux/gpio.h>
#include <linux/gfp.h>
#include <linux/of.h>
#include <linux/of_gpio.h>
#include <linux/of_device.h>
#include <asm/sizes.h>
@ -573,6 +576,50 @@ static irqreturn_t pxamci_detect_irq(int irq, void *devid)
return IRQ_HANDLED;
}
#ifdef CONFIG_OF
static const struct of_device_id pxa_mmc_dt_ids[] = {
{ .compatible = "marvell,pxa-mmc" },
{ }
};
MODULE_DEVICE_TABLE(of, pxa_mmc_dt_ids);
static int __devinit pxamci_of_init(struct platform_device *pdev)
{
struct device_node *np = pdev->dev.of_node;
struct pxamci_platform_data *pdata;
u32 tmp;
if (!np)
return 0;
pdata = devm_kzalloc(&pdev->dev, sizeof(*pdata), GFP_KERNEL);
if (!pdata)
return -ENOMEM;
pdata->gpio_card_detect =
of_get_named_gpio(np, "cd-gpios", 0);
pdata->gpio_card_ro =
of_get_named_gpio(np, "wp-gpios", 0);
/* pxa-mmc specific */
pdata->gpio_power =
of_get_named_gpio(np, "pxa-mmc,gpio-power", 0);
if (of_property_read_u32(np, "pxa-mmc,detect-delay-ms", &tmp) == 0)
pdata->detect_delay_ms = tmp;
pdev->dev.platform_data = pdata;
return 0;
}
#else
static int __devinit pxamci_of_init(struct platform_device *pdev)
{
return 0;
}
#endif
static int pxamci_probe(struct platform_device *pdev)
{
struct mmc_host *mmc;
@ -580,6 +627,10 @@ static int pxamci_probe(struct platform_device *pdev)
struct resource *r, *dmarx, *dmatx;
int ret, irq, gpio_cd = -1, gpio_ro = -1, gpio_power = -1;
ret = pxamci_of_init(pdev);
if (ret)
return ret;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
irq = platform_get_irq(pdev, 0);
if (!r || irq < 0)
@ -866,6 +917,7 @@ static struct platform_driver pxamci_driver = {
.driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
.of_match_table = of_match_ptr(pxa_mmc_dt_ids),
#ifdef CONFIG_PM
.pm = &pxamci_pm_ops,
#endif