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pinctrl/amd: Set the level based on ACPI tables

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In the function amd_gpio_irq_set_type, read the values from
the ACPI table to set the level and drop the settings passed
by the client.

Cc: <stable@vger.kernel.org> # 4.8.x+
Reviewed-by: Pankaj Sen <Pankaj.Sen@amd.com>
Reviewed-by: Nitesh Kumar Agrawal <Nitesh-kumar.Agrawal@amd.com>
Reviewed-by: Shah, Nehal-bakulchandra <Nehal-bakulchandra.Shah@amd.com>
Signed-off-by: Shyam-sundar S-k <Shyam-sundar.S-k@amd.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Shyam Sundar S K 2016-12-08 17:31:14 +05:30 committed by Linus Walleij
parent 7ce7d89f48
commit 2983f296f2
1 changed files with 7 additions and 12 deletions
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19
drivers/pinctrl/pinctrl-amd.c
View file

@ -382,26 +382,21 @@ static int amd_gpio_irq_set_type(struct irq_data *d, unsigned int type)
{
int ret = 0;
u32 pin_reg;
unsigned long flags;
bool level_trig;
u32 active_level;
unsigned long flags, irq_flags;
struct gpio_chip *gc = irq_data_get_irq_chip_data(d);
struct amd_gpio *gpio_dev = gpiochip_get_data(gc);
spin_lock_irqsave(&gpio_dev->lock, flags);
pin_reg = readl(gpio_dev->base + (d->hwirq)*4);
/*
* When level_trig is set EDGE and active_level is set HIGH in BIOS
* default settings, ignore incoming settings from client and use
* BIOS settings to configure GPIO register.
/* Ignore the settings coming from the client and
* read the values from the ACPI tables
* while setting the trigger type
*/
level_trig = !(pin_reg & (LEVEL_TRIGGER << LEVEL_TRIG_OFF));
active_level = pin_reg & (ACTIVE_LEVEL_MASK << ACTIVE_LEVEL_OFF);
if(level_trig &&
((active_level >> ACTIVE_LEVEL_OFF) == ACTIVE_HIGH))
type = IRQ_TYPE_EDGE_FALLING;
irq_flags = irq_get_trigger_type(d->irq);
if (irq_flags != IRQ_TYPE_NONE)
type = irq_flags;
switch (type & IRQ_TYPE_SENSE_MASK) {
case IRQ_TYPE_EDGE_RISING: