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Pin control fixes for v4.19:

Browse Source 
- Two fixes for the Intel pin controllers than cause
   problems on laptops.
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Merge tag 'pinctrl-v4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl

Linus writes:
  "Pin control fixes for v4.19:
   - Two fixes for the Intel pin controllers than cause
     problems on laptops."

* tag 'pinctrl-v4.19-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl:
  pinctrl: intel: Do pin translation in other GPIO operations as well
  pinctrl: cannonlake: Fix gpio base for GPP-E
This commit is contained in:
Greg Kroah-Hartman 2018-09-21 20:01:16 +02:00
commit 10dc890d42
2 changed files with 96 additions and 81 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/pinctrl/intel/pinctrl-cannonlake.c
View File

@ -379,7 +379,7 @@ static const struct intel_padgroup cnlh_community1_gpps[] = {
static const struct intel_padgroup cnlh_community3_gpps[] = {
CNL_GPP(0, 155, 178, 192), /* GPP_K */
CNL_GPP(1, 179, 202, 224), /* GPP_H */
CNL_GPP(2, 203, 215, 258), /* GPP_E */
CNL_GPP(2, 203, 215, 256), /* GPP_E */
CNL_GPP(3, 216, 239, 288), /* GPP_F */
CNL_GPP(4, 240, 248, CNL_NO_GPIO), /* SPI */
};

175
drivers/pinctrl/intel/pinctrl-intel.c
View File

@ -747,86 +747,6 @@ static const struct pinctrl_desc intel_pinctrl_desc = {
.owner = THIS_MODULE,
};
static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
void __iomem *reg;
u32 padcfg0;
reg = intel_get_padcfg(pctrl, offset, PADCFG0);
if (!reg)
return -EINVAL;
padcfg0 = readl(reg);
if (!(padcfg0 & PADCFG0_GPIOTXDIS))
return !!(padcfg0 & PADCFG0_GPIOTXSTATE);
return !!(padcfg0 & PADCFG0_GPIORXSTATE);
}
static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
unsigned long flags;
void __iomem *reg;
u32 padcfg0;
reg = intel_get_padcfg(pctrl, offset, PADCFG0);
if (!reg)
return;
raw_spin_lock_irqsave(&pctrl->lock, flags);
padcfg0 = readl(reg);
if (value)
padcfg0 |= PADCFG0_GPIOTXSTATE;
else
padcfg0 &= ~PADCFG0_GPIOTXSTATE;
writel(padcfg0, reg);
raw_spin_unlock_irqrestore(&pctrl->lock, flags);
}
static int intel_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
void __iomem *reg;
u32 padcfg0;
reg = intel_get_padcfg(pctrl, offset, PADCFG0);
if (!reg)
return -EINVAL;
padcfg0 = readl(reg);
if (padcfg0 & PADCFG0_PMODE_MASK)
return -EINVAL;
return !!(padcfg0 & PADCFG0_GPIOTXDIS);
}
static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_gpio_direction_input(chip->base + offset);
}
static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
intel_gpio_set(chip, offset, value);
return pinctrl_gpio_direction_output(chip->base + offset);
}
static const struct gpio_chip intel_gpio_chip = {
.owner = THIS_MODULE,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get_direction = intel_gpio_get_direction,
.direction_input = intel_gpio_direction_input,
.direction_output = intel_gpio_direction_output,
.get = intel_gpio_get,
.set = intel_gpio_set,
.set_config = gpiochip_generic_config,
};
/**
* intel_gpio_to_pin() - Translate from GPIO offset to pin number
* @pctrl: Pinctrl structure
@ -872,6 +792,101 @@ static int intel_gpio_to_pin(struct intel_pinctrl *pctrl, unsigned offset,
return -EINVAL;
}
static int intel_gpio_get(struct gpio_chip *chip, unsigned offset)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
void __iomem *reg;
u32 padcfg0;
int pin;
pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
if (pin < 0)
return -EINVAL;
reg = intel_get_padcfg(pctrl, pin, PADCFG0);
if (!reg)
return -EINVAL;
padcfg0 = readl(reg);
if (!(padcfg0 & PADCFG0_GPIOTXDIS))
return !!(padcfg0 & PADCFG0_GPIOTXSTATE);
return !!(padcfg0 & PADCFG0_GPIORXSTATE);
}
static void intel_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
unsigned long flags;
void __iomem *reg;
u32 padcfg0;
int pin;
pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
if (pin < 0)
return;
reg = intel_get_padcfg(pctrl, pin, PADCFG0);
if (!reg)
return;
raw_spin_lock_irqsave(&pctrl->lock, flags);
padcfg0 = readl(reg);
if (value)
padcfg0 |= PADCFG0_GPIOTXSTATE;
else
padcfg0 &= ~PADCFG0_GPIOTXSTATE;
writel(padcfg0, reg);
raw_spin_unlock_irqrestore(&pctrl->lock, flags);
}
static int intel_gpio_get_direction(struct gpio_chip *chip, unsigned int offset)
{
struct intel_pinctrl *pctrl = gpiochip_get_data(chip);
void __iomem *reg;
u32 padcfg0;
int pin;
pin = intel_gpio_to_pin(pctrl, offset, NULL, NULL);
if (pin < 0)
return -EINVAL;
reg = intel_get_padcfg(pctrl, pin, PADCFG0);
if (!reg)
return -EINVAL;
padcfg0 = readl(reg);
if (padcfg0 & PADCFG0_PMODE_MASK)
return -EINVAL;
return !!(padcfg0 & PADCFG0_GPIOTXDIS);
}
static int intel_gpio_direction_input(struct gpio_chip *chip, unsigned offset)
{
return pinctrl_gpio_direction_input(chip->base + offset);
}
static int intel_gpio_direction_output(struct gpio_chip *chip, unsigned offset,
int value)
{
intel_gpio_set(chip, offset, value);
return pinctrl_gpio_direction_output(chip->base + offset);
}
static const struct gpio_chip intel_gpio_chip = {
.owner = THIS_MODULE,
.request = gpiochip_generic_request,
.free = gpiochip_generic_free,
.get_direction = intel_gpio_get_direction,
.direction_input = intel_gpio_direction_input,
.direction_output = intel_gpio_direction_output,
.get = intel_gpio_get,
.set = intel_gpio_set,
.set_config = gpiochip_generic_config,
};
static int intel_gpio_irq_reqres(struct irq_data *d)
{
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);