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authorFabio Estevam <festevam@gmail.com>2020-11-17 07:59:17 -0300
committerLinus Walleij <linus.walleij@linaro.org>2020-11-18 08:52:22 +0100
commit0f2c7af45d7eef8455d7ad39c5326229bf19a2ed (patch)
treee0b48cd1a4cc21645ed80a037ab2e248319be6de /drivers/gpio
parent8b51658347affcebfa30b82cd814201a329725fc (diff)
gpio: mxc: Convert the driver to DT-only
Since 5.10-rc1 i.MX is a devicetree-only platform, so simplify the code by removing the unused non-DT support. Signed-off-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Link: https://lore.kernel.org/r/20201117105917.27591-1-festevam@gmail.com Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Diffstat (limited to 'drivers/gpio')
-rw-r--r--drivers/gpio/gpio-mxc.c102
1 files changed, 22 insertions, 80 deletions
diff --git a/drivers/gpio/gpio-mxc.c b/drivers/gpio/gpio-mxc.c
index 643f4c557ac2..157106e1e438 100644
--- a/drivers/gpio/gpio-mxc.c
+++ b/drivers/gpio/gpio-mxc.c
@@ -24,13 +24,6 @@
#include <linux/of_device.h>
#include <linux/bug.h>
-enum mxc_gpio_hwtype {
- IMX1_GPIO, /* runs on i.mx1 */
- IMX21_GPIO, /* runs on i.mx21 and i.mx27 */
- IMX31_GPIO, /* runs on i.mx31 */
- IMX35_GPIO, /* runs on all other i.mx */
-};
-
/* device type dependent stuff */
struct mxc_gpio_hwdata {
unsigned dr_reg;
@@ -68,6 +61,7 @@ struct mxc_gpio_port {
u32 both_edges;
struct mxc_gpio_reg_saved gpio_saved_reg;
bool power_off;
+ const struct mxc_gpio_hwdata *hwdata;
};
static struct mxc_gpio_hwdata imx1_imx21_gpio_hwdata = {
@@ -115,48 +109,27 @@ static struct mxc_gpio_hwdata imx35_gpio_hwdata = {
.fall_edge = 0x03,
};
-static enum mxc_gpio_hwtype mxc_gpio_hwtype;
-static struct mxc_gpio_hwdata *mxc_gpio_hwdata;
-
-#define GPIO_DR (mxc_gpio_hwdata->dr_reg)
-#define GPIO_GDIR (mxc_gpio_hwdata->gdir_reg)
-#define GPIO_PSR (mxc_gpio_hwdata->psr_reg)
-#define GPIO_ICR1 (mxc_gpio_hwdata->icr1_reg)
-#define GPIO_ICR2 (mxc_gpio_hwdata->icr2_reg)
-#define GPIO_IMR (mxc_gpio_hwdata->imr_reg)
-#define GPIO_ISR (mxc_gpio_hwdata->isr_reg)
-#define GPIO_EDGE_SEL (mxc_gpio_hwdata->edge_sel_reg)
-
-#define GPIO_INT_LOW_LEV (mxc_gpio_hwdata->low_level)
-#define GPIO_INT_HIGH_LEV (mxc_gpio_hwdata->high_level)
-#define GPIO_INT_RISE_EDGE (mxc_gpio_hwdata->rise_edge)
-#define GPIO_INT_FALL_EDGE (mxc_gpio_hwdata->fall_edge)
+#define GPIO_DR (port->hwdata->dr_reg)
+#define GPIO_GDIR (port->hwdata->gdir_reg)
+#define GPIO_PSR (port->hwdata->psr_reg)
+#define GPIO_ICR1 (port->hwdata->icr1_reg)
+#define GPIO_ICR2 (port->hwdata->icr2_reg)
+#define GPIO_IMR (port->hwdata->imr_reg)
+#define GPIO_ISR (port->hwdata->isr_reg)
+#define GPIO_EDGE_SEL (port->hwdata->edge_sel_reg)
+
+#define GPIO_INT_LOW_LEV (port->hwdata->low_level)
+#define GPIO_INT_HIGH_LEV (port->hwdata->high_level)
+#define GPIO_INT_RISE_EDGE (port->hwdata->rise_edge)
+#define GPIO_INT_FALL_EDGE (port->hwdata->fall_edge)
#define GPIO_INT_BOTH_EDGES 0x4
-static const struct platform_device_id mxc_gpio_devtype[] = {
- {
- .name = "imx1-gpio",
- .driver_data = IMX1_GPIO,
- }, {
- .name = "imx21-gpio",
- .driver_data = IMX21_GPIO,
- }, {
- .name = "imx31-gpio",
- .driver_data = IMX31_GPIO,
- }, {
- .name = "imx35-gpio",
- .driver_data = IMX35_GPIO,
- }, {
- /* sentinel */
- }
-};
-
static const struct of_device_id mxc_gpio_dt_ids[] = {
- { .compatible = "fsl,imx1-gpio", .data = &mxc_gpio_devtype[IMX1_GPIO], },
- { .compatible = "fsl,imx21-gpio", .data = &mxc_gpio_devtype[IMX21_GPIO], },
- { .compatible = "fsl,imx31-gpio", .data = &mxc_gpio_devtype[IMX31_GPIO], },
- { .compatible = "fsl,imx35-gpio", .data = &mxc_gpio_devtype[IMX35_GPIO], },
- { .compatible = "fsl,imx7d-gpio", .data = &mxc_gpio_devtype[IMX35_GPIO], },
+ { .compatible = "fsl,imx1-gpio", .data = &imx1_imx21_gpio_hwdata },
+ { .compatible = "fsl,imx21-gpio", .data = &imx1_imx21_gpio_hwdata },
+ { .compatible = "fsl,imx31-gpio", .data = &imx31_gpio_hwdata },
+ { .compatible = "fsl,imx35-gpio", .data = &imx35_gpio_hwdata },
+ { .compatible = "fsl,imx7d-gpio", .data = &imx35_gpio_hwdata },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mxc_gpio_dt_ids);
@@ -372,36 +345,6 @@ static int mxc_gpio_init_gc(struct mxc_gpio_port *port, int irq_base)
return rv;
}
-static void mxc_gpio_get_hw(struct platform_device *pdev)
-{
- const struct of_device_id *of_id =
- of_match_device(mxc_gpio_dt_ids, &pdev->dev);
- enum mxc_gpio_hwtype hwtype;
-
- if (of_id)
- pdev->id_entry = of_id->data;
- hwtype = pdev->id_entry->driver_data;
-
- if (mxc_gpio_hwtype) {
- /*
- * The driver works with a reasonable presupposition,
- * that is all gpio ports must be the same type when
- * running on one soc.
- */
- BUG_ON(mxc_gpio_hwtype != hwtype);
- return;
- }
-
- if (hwtype == IMX35_GPIO)
- mxc_gpio_hwdata = &imx35_gpio_hwdata;
- else if (hwtype == IMX31_GPIO)
- mxc_gpio_hwdata = &imx31_gpio_hwdata;
- else
- mxc_gpio_hwdata = &imx1_imx21_gpio_hwdata;
-
- mxc_gpio_hwtype = hwtype;
-}
-
static int mxc_gpio_to_irq(struct gpio_chip *gc, unsigned offset)
{
struct mxc_gpio_port *port = gpiochip_get_data(gc);
@@ -417,14 +360,14 @@ static int mxc_gpio_probe(struct platform_device *pdev)
int irq_base;
int err;
- mxc_gpio_get_hw(pdev);
-
port = devm_kzalloc(&pdev->dev, sizeof(*port), GFP_KERNEL);
if (!port)
return -ENOMEM;
port->dev = &pdev->dev;
+ port->hwdata = device_get_match_data(&pdev->dev);
+
port->base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(port->base))
return PTR_ERR(port->base);
@@ -461,7 +404,7 @@ static int mxc_gpio_probe(struct platform_device *pdev)
writel(0, port->base + GPIO_IMR);
writel(~0, port->base + GPIO_ISR);
- if (mxc_gpio_hwtype == IMX21_GPIO) {
+ if (of_device_is_compatible(np, "fsl,imx21-gpio")) {
/*
* Setup one handler for all GPIO interrupts. Actually setting
* the handler is needed only once, but doing it for every port
@@ -596,7 +539,6 @@ static struct platform_driver mxc_gpio_driver = {
.suppress_bind_attrs = true,
},
.probe = mxc_gpio_probe,
- .id_table = mxc_gpio_devtype,
};
static int __init gpio_mxc_init(void)