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x86: tangier: Enable support for SD/SDIO family in the pinmux driver

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We would need to quirk out the Card Detect case and for that we allow
configuring the SD/SDIO family of pins.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
This commit is contained in:
Andy Shevchenko
2021-10-27 14:28:09 +03:00
committed by Bin Meng
parent 9bcd51b838
commit 90cc2c5c64
1 changed files with 34 additions and 5 deletions
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39
arch/x86/cpu/tangier/pinmux.c
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@@ -37,8 +37,9 @@ struct mrfld_family {
.npins = (e) - (s) + 1, \
}
/* Now we only support I2C family of pins */
/* Now we only support SD/SDIO and I2C families of pins */
static struct mrfld_family mrfld_families[] = {
MRFLD_FAMILY(3, 37, 56),
MRFLD_FAMILY(7, 101, 114),
};
@@ -125,6 +126,34 @@ static int mrfld_pinconfig_protected(unsigned int pin, u32 mask, u32 bits)
return ret;
}
static int mrfld_pinconfig(unsigned int pin, u32 mask, u32 bits)
{
struct mrfld_pinctrl *pinctrl;
struct udevice *dev;
void __iomem *bufcfg;
u32 v, value;
int ret;
ret = syscon_get_by_driver_data(X86_SYSCON_PINCONF, &dev);
if (ret)
return ret;
pinctrl = dev_get_priv(dev);
bufcfg = mrfld_get_bufcfg(pinctrl, pin);
if (!bufcfg)
return -EINVAL;
value = readl(bufcfg);
v = (value & ~mask) | (bits & mask);
writel(v, bufcfg);
debug("v: 0x%x p: 0x%x bits: %d, mask: %d bufcfg: 0x%p\n",
v, (u32)bufcfg, bits, mask, bufcfg);
return 0;
}
static int mrfld_pinctrl_cfg_pin(ofnode pin_node)
{
bool is_protected;
@@ -133,10 +162,7 @@ static int mrfld_pinctrl_cfg_pin(ofnode pin_node)
u32 mask;
int ret;
/* For now we only support just protected Family of pins */
is_protected = ofnode_read_bool(pin_node, "protected");
if (!is_protected)
return -ENOTSUPP;
pad_offset = ofnode_read_s32_default(pin_node, "pad-offset", -1);
if (pad_offset == -1)
@@ -152,7 +178,10 @@ static int mrfld_pinctrl_cfg_pin(ofnode pin_node)
if (mode & ~mask)
return -ENOTSUPP;
ret = mrfld_pinconfig_protected(pad_offset, mask, mode);
if (is_protected)
ret = mrfld_pinconfig_protected(pad_offset, mask, mode);
else
ret = mrfld_pinconfig(pad_offset, mask, mode);
return ret;
}