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pinmmux: i.MX: add pin mux support for i.MX7 

Signed-off-by Juergen Borleis <jbe@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Juergen Borleis 2016-12-06 15:28:57 +01:00 committed by Sascha Hauer
parent ea55770308
commit 99a464413e
1 changed files with 32 additions and 8 deletions
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40
drivers/pinctrl/imx-iomux-v3.c
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@ -24,15 +24,20 @@
#include <pinctrl.h>
#include <malloc.h>
#include <mach/iomux-v3.h>
#include <mach/generic.h>
struct imx_iomux_v3 {
void __iomem *base;
struct pinctrl_device pinctrl;
unsigned int flags;
};
struct imx_iomux_v3_data {
unsigned int flags;
};
static void __iomem *iomuxv3_base;
/*
* configures a single pad in the iomuxer
*/
@ -111,7 +116,7 @@ static int imx_iomux_v3_set_state(struct pinctrl_device *pdev, struct device_nod
if (conf_val & IMX_DT_NO_PAD_CTL)
conf_reg = 0;
iomux_v3_setup_pad(iomux->base, 0,
iomux_v3_setup_pad(iomux->base, iomux->flags,
mux_reg, conf_reg, input_reg,
mux_val, conf_val, input_val);
}
@ -126,14 +131,18 @@ static struct pinctrl_ops imx_iomux_v3_ops = {
static int imx_pinctrl_dt(struct device_d *dev, void __iomem *base)
{
struct imx_iomux_v3 *iomux;
struct imx_iomux_v3_data *drvdata = NULL;
int ret;
dev_get_drvdata(dev, (const void **)&drvdata);
iomux = xzalloc(sizeof(*iomux));
iomux->base = base;
iomux->pinctrl.dev = dev;
iomux->pinctrl.ops = &imx_iomux_v3_ops;
if (drvdata)
iomux->flags = drvdata->flags;
ret = pinctrl_register(&iomux->pinctrl);
if (ret)
@ -144,23 +153,33 @@ static int imx_pinctrl_dt(struct device_d *dev, void __iomem *base)
static int imx_iomux_v3_probe(struct device_d *dev)
{
void __iomem *base;
struct resource *iores;
int ret = 0;
if (iomuxv3_base)
return -EBUSY;
iores = dev_request_mem_resource(dev, 0);
if (IS_ERR(iores))
return PTR_ERR(iores);
iomuxv3_base = IOMEM(iores->start);
base = IOMEM(iores->start);
if (!iomuxv3_base)
/*
* Uh, this works only for the older controllers, not for
* i.MX7 which has two iomux controllers. i.MX7 based boards
* should not use mxc_iomux_v3_setup_pad anyway.
*/
iomuxv3_base = base;
if (IS_ENABLED(CONFIG_PINCTRL) && dev->device_node)
ret = imx_pinctrl_dt(dev, iomuxv3_base);
ret = imx_pinctrl_dt(dev, base);
return ret;
}
static struct imx_iomux_v3_data imx_iomux_imx7_lpsr_data = {
.flags = ZERO_OFFSET_VALID,
};
static __maybe_unused struct of_device_id imx_iomux_v3_dt_ids[] = {
{
.compatible = "fsl,imx25-iomuxc",
@ -172,12 +191,17 @@ static __maybe_unused struct of_device_id imx_iomux_v3_dt_ids[] = {
.compatible = "fsl,imx53-iomuxc",
}, {
.compatible = "fsl,imx6q-iomuxc",
}, {
}, {
.compatible = "fsl,imx6dl-iomuxc",
}, {
.compatible = "fsl,imx6sx-iomuxc",
}, {
.compatible = "fsl,imx6ul-iomuxc",
}, {
.compatible = "fsl,imx7d-iomuxc",
}, {
.compatible = "fsl,imx7d-iomuxc-lpsr",
.data = &imx_iomux_imx7_lpsr_data,
}, {
/* sentinel */
}