diff options
| -rw-r--r-- | drivers/irqchip/irq-meson-gpio.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/drivers/irqchip/irq-meson-gpio.c b/drivers/irqchip/irq-meson-gpio.c index 5a1a59e50bb3..ccc7f823911b 100644 --- a/drivers/irqchip/irq-meson-gpio.c +++ b/drivers/irqchip/irq-meson-gpio.c @@ -24,6 +24,9 @@ #define REG_PIN_47_SEL 0x08 #define REG_FILTER_SEL 0x0c +/* use for A1 like chips */ +#define REG_PIN_A1_SEL 0x04 + /* * Note: The S905X3 datasheet reports that BOTH_EDGE is controlled by * bits 24 to 31. Tests on the actual HW show that these bits are @@ -44,6 +47,10 @@ struct meson_gpio_irq_controller; static void meson8_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl, unsigned int channel, unsigned long hwirq); static void meson_gpio_irq_init_dummy(struct meson_gpio_irq_controller *ctl); +static void meson_a1_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl, + unsigned int channel, + unsigned long hwirq); +static void meson_a1_gpio_irq_init(struct meson_gpio_irq_controller *ctl); struct irq_ctl_ops { void (*gpio_irq_sel_pin)(struct meson_gpio_irq_controller *ctl, @@ -75,6 +82,15 @@ struct meson_gpio_irq_params { .pol_low_offset = 16, \ .pin_sel_mask = 0xff, \ +#define INIT_MESON_A1_COMMON_DATA(irqs) \ + INIT_MESON_COMMON(irqs, meson_a1_gpio_irq_init, \ + meson_a1_gpio_irq_sel_pin) \ + .support_edge_both = true, \ + .edge_both_offset = 16, \ + .edge_single_offset = 8, \ + .pol_low_offset = 0, \ + .pin_sel_mask = 0x7f, \ + static const struct meson_gpio_irq_params meson8_params = { INIT_MESON8_COMMON_DATA(134) }; @@ -101,6 +117,10 @@ static const struct meson_gpio_irq_params sm1_params = { .edge_both_offset = 8, }; +static const struct meson_gpio_irq_params a1_params = { + INIT_MESON_A1_COMMON_DATA(62) +}; + 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 }, @@ -109,6 +129,7 @@ static const struct of_device_id meson_irq_gpio_matches[] = { { .compatible = "amlogic,meson-axg-gpio-intc", .data = &axg_params }, { .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 }, { } }; @@ -149,6 +170,27 @@ static void meson8_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl, hwirq << bit_offset); } +static void meson_a1_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl, + unsigned int channel, + unsigned long hwirq) +{ + unsigned int reg_offset; + unsigned int bit_offset; + + bit_offset = ((channel % 2) == 0) ? 0 : 16; + reg_offset = REG_PIN_A1_SEL + ((channel / 2) << 2); + + meson_gpio_irq_update_bits(ctl, reg_offset, + ctl->params->pin_sel_mask << bit_offset, + hwirq << bit_offset); +} + +/* For a1 or later chips like a1 there is a switch to enable/disable irq */ +static void meson_a1_gpio_irq_init(struct meson_gpio_irq_controller *ctl) +{ + meson_gpio_irq_update_bits(ctl, REG_EDGE_POL, BIT(31), BIT(31)); +} + static int meson_gpio_irq_request_channel(struct meson_gpio_irq_controller *ctl, unsigned long hwirq, |