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irqchip/meson-gpio: Add support for meson s4 SoCs

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The meson s4 SoCs support 12 gpio irq lines compared with previous
serial chips and have something different, details are as below.

IRQ Number:
- 80:68 13 pins on bank Z
- 67:48 20 pins on bank X
- 47:36 12 pins on bank H
- 35:24 12 pins on bank D
- 23:22 2  pins on bank E
- 21:14 8  pins on bank C
- 13:0  13 pins on bank B

Signed-off-by: Qianggui Song <qianggui.song@amlogic.com>
[maz: fixed some W=1 build warnings]
Signed-off-by: Marc Zyngier <maz@kernel.org>
Link: https://lore.kernel.org/r/20220225055207.1048-5-qianggui.song@amlogic.com
This commit is contained in:
Qianggui Song 2022-02-25 13:52:06 +08:00 committed by Marc Zyngier
parent be6692b923
commit d6c47d21a0
1 changed files with 65 additions and 0 deletions
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65
drivers/irqchip/irq-meson-gpio.c
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@ -26,6 +26,8 @@
/* use for A1 like chips */
#define REG_PIN_A1_SEL 0x04
/* Used for s4 chips */
#define REG_EDGE_POL_S4 0x1c
/*
* Note: The S905X3 datasheet reports that BOTH_EDGE is controlled by
@ -53,6 +55,8 @@ static void meson_a1_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl,
static void meson_a1_gpio_irq_init(struct meson_gpio_irq_controller *ctl);
static int meson8_gpio_irq_set_type(struct meson_gpio_irq_controller *ctl,
unsigned int type, u32 *channel_hwirq);
static int meson_s4_gpio_irq_set_type(struct meson_gpio_irq_controller *ctl,
unsigned int type, u32 *channel_hwirq);
struct irq_ctl_ops {
void (*gpio_irq_sel_pin)(struct meson_gpio_irq_controller *ctl,
@ -101,6 +105,17 @@ struct meson_gpio_irq_params {
.pin_sel_mask = 0x7f, \
.nr_channels = 8, \
#define INIT_MESON_S4_COMMON_DATA(irqs) \
INIT_MESON_COMMON(irqs, meson_a1_gpio_irq_init, \
meson_a1_gpio_irq_sel_pin, \
meson_s4_gpio_irq_set_type) \
.support_edge_both = true, \
.edge_both_offset = 0, \
.edge_single_offset = 12, \
.pol_low_offset = 0, \
.pin_sel_mask = 0xff, \
.nr_channels = 12, \
static const struct meson_gpio_irq_params meson8_params = {
INIT_MESON8_COMMON_DATA(134)
};
@ -131,6 +146,10 @@ static const struct meson_gpio_irq_params a1_params = {
INIT_MESON_A1_COMMON_DATA(62)
};
static const struct meson_gpio_irq_params s4_params = {
INIT_MESON_S4_COMMON_DATA(82)
};
static const struct of_device_id meson_irq_gpio_matches[] = {
{ .compatible = "amlogic,meson8-gpio-intc", .data = &meson8_params },
{ .compatible = "amlogic,meson8b-gpio-intc", .data = &meson8b_params },
@ -140,6 +159,7 @@ static const struct of_device_id meson_irq_gpio_matches[] = {
{ .compatible = "amlogic,meson-g12a-gpio-intc", .data = &axg_params },
{ .compatible = "amlogic,meson-sm1-gpio-intc", .data = &sm1_params },
{ .compatible = "amlogic,meson-a1-gpio-intc", .data = &a1_params },
{ .compatible = "amlogic,meson-s4-gpio-intc", .data = &s4_params },
{ }
};
@ -308,6 +328,51 @@ static int meson8_gpio_irq_set_type(struct meson_gpio_irq_controller *ctl,
return 0;
}
/*
* gpio irq relative registers for s4
* -PADCTRL_GPIO_IRQ_CTRL0
* bit[31]: enable/disable all the irq lines
* bit[12-23]: single edge trigger
* bit[0-11]: polarity trigger
*
* -PADCTRL_GPIO_IRQ_CTRL[X]
* bit[0-16]: 7 bits to choose gpio source for irq line 2*[X] - 2
* bit[16-22]:7 bits to choose gpio source for irq line 2*[X] - 1
* where X = 1-6
*
* -PADCTRL_GPIO_IRQ_CTRL[7]
* bit[0-11]: both edge trigger
*/
static int meson_s4_gpio_irq_set_type(struct meson_gpio_irq_controller *ctl,
unsigned int type, u32 *channel_hwirq)
{
u32 val = 0;
unsigned int idx;
idx = meson_gpio_irq_get_channel_idx(ctl, channel_hwirq);
type &= IRQ_TYPE_SENSE_MASK;
meson_gpio_irq_update_bits(ctl, REG_EDGE_POL_S4, BIT(idx), 0);
if (type == IRQ_TYPE_EDGE_BOTH) {
val |= BIT(ctl->params->edge_both_offset + idx);
meson_gpio_irq_update_bits(ctl, REG_EDGE_POL_S4,
BIT(ctl->params->edge_both_offset + idx), val);
return 0;
}
if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING))
val |= BIT(ctl->params->pol_low_offset + idx);
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
val |= BIT(ctl->params->edge_single_offset + idx);
meson_gpio_irq_update_bits(ctl, REG_EDGE_POL,
BIT(idx) | BIT(12 + idx), val);
return 0;
};
static unsigned int meson_gpio_irq_type_output(unsigned int type)
{
unsigned int sense = type & IRQ_TYPE_SENSE_MASK;