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pinctrl: spawn U300 pinctrl from the COH901 GPIO

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This solves the riddle on how the U300 pin controller shall be
able to reference the struct gpio_chip even though these are
two separate drivers: spawn the pinctrl child from the GPIO
driver and pass in the struct gpio_chip as platform data.
In the process we rename the U300 "pinmux-u300" to
"pinctrl-u300" so as not to confuse.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij
2012-02-21 14:31:45 +01:00
parent 4ecce45dd6
commit 128a06d4bb
4 changed files with 38 additions and 24 deletions
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20
drivers/pinctrl/pinctrl-u300.c
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@@ -162,7 +162,7 @@
#define U300_SYSCON_PMC4R_APP_MISC_16_APP_UART1_CTS 0x0100
#define U300_SYSCON_PMC4R_APP_MISC_16_EMIF_1_STATIC_CS5_N 0x0200
#define DRIVER_NAME "pinmux-u300"
#define DRIVER_NAME "pinctrl-u300"
/*
* The DB3350 has 467 pads, I have enumerated the pads clockwise around the
@@ -1053,13 +1053,16 @@ static struct pinctrl_desc u300_pmx_desc = {
.owner = THIS_MODULE,
};
static int __init u300_pmx_probe(struct platform_device *pdev)
static int __devinit u300_pmx_probe(struct platform_device *pdev)
{
struct u300_pmx *upmx;
struct resource *res;
struct gpio_chip *gpio_chip = dev_get_platdata(&pdev->dev);
int ret;
int i;
pr_err("U300 PMX PROBE\n");
/* Create state holders etc for this driver */
upmx = devm_kzalloc(&pdev->dev, sizeof(*upmx), GFP_KERNEL);
if (!upmx)
@@ -1095,12 +1098,14 @@ static int __init u300_pmx_probe(struct platform_device *pdev)
}
/* We will handle a range of GPIO pins */
for (i = 0; i < ARRAY_SIZE(u300_gpio_ranges); i++)
for (i = 0; i < ARRAY_SIZE(u300_gpio_ranges); i++) {
u300_gpio_ranges[i].gc = gpio_chip;
pinctrl_add_gpio_range(upmx->pctl, &u300_gpio_ranges[i]);
}
platform_set_drvdata(pdev, upmx);
dev_info(&pdev->dev, "initialized U300 pinmux driver\n");
dev_info(&pdev->dev, "initialized U300 pin control driver\n");
return 0;
@@ -1115,7 +1120,7 @@ out_no_resource:
return ret;
}
static int __exit u300_pmx_remove(struct platform_device *pdev)
static int __devexit u300_pmx_remove(struct platform_device *pdev)
{
struct u300_pmx *upmx = platform_get_drvdata(pdev);
int i;
@@ -1136,12 +1141,13 @@ static struct platform_driver u300_pmx_driver = {
.name = DRIVER_NAME,
.owner = THIS_MODULE,
},
.remove = __exit_p(u300_pmx_remove),
.probe = u300_pmx_probe,
.remove = __devexit_p(u300_pmx_remove),
};
static int __init u300_pmx_init(void)
{
return platform_driver_probe(&u300_pmx_driver, u300_pmx_probe);
return platform_driver_register(&u300_pmx_driver);
}
arch_initcall(u300_pmx_init);