#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
* stuck at 0. Bits 8 to 15 are responsive and have the expected
* effect.
*/
-#define REG_EDGE_POL_EDGE(x) BIT(x)
-#define REG_EDGE_POL_LOW(x) BIT(16 + (x))
-#define REG_BOTH_EDGE(x) BIT(8 + (x))
-#define REG_EDGE_POL_MASK(x) ( \
- REG_EDGE_POL_EDGE(x) | \
- REG_EDGE_POL_LOW(x) | \
- REG_BOTH_EDGE(x))
+#define REG_EDGE_POL_EDGE(params, x) BIT((params)->edge_single_offset + (x))
+#define REG_EDGE_POL_LOW(params, x) BIT((params)->pol_low_offset + (x))
+#define REG_BOTH_EDGE(params, x) BIT((params)->edge_both_offset + (x))
+#define REG_EDGE_POL_MASK(params, x) ( \
+ REG_EDGE_POL_EDGE(params, x) | \
+ REG_EDGE_POL_LOW(params, x) | \
+ REG_BOTH_EDGE(params, x))
#define REG_PIN_SEL_SHIFT(x) (((x) % 4) * 8)
#define REG_FILTER_SEL_SHIFT(x) ((x) * 4)
+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,
+ unsigned int channel, unsigned long hwirq);
+ void (*gpio_irq_init)(struct meson_gpio_irq_controller *ctl);
+};
+
struct meson_gpio_irq_params {
unsigned int nr_hwirq;
bool support_edge_both;
+ unsigned int edge_both_offset;
+ unsigned int edge_single_offset;
+ unsigned int pol_low_offset;
+ unsigned int pin_sel_mask;
+ struct irq_ctl_ops ops;
};
+#define INIT_MESON_COMMON(irqs, init, sel) \
+ .nr_hwirq = irqs, \
+ .ops = { \
+ .gpio_irq_init = init, \
+ .gpio_irq_sel_pin = sel, \
+ },
+
+#define INIT_MESON8_COMMON_DATA(irqs) \
+ INIT_MESON_COMMON(irqs, meson_gpio_irq_init_dummy, \
+ meson8_gpio_irq_sel_pin) \
+ .edge_single_offset = 0, \
+ .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 = {
- .nr_hwirq = 134,
+ INIT_MESON8_COMMON_DATA(134)
};
static const struct meson_gpio_irq_params meson8b_params = {
- .nr_hwirq = 119,
+ INIT_MESON8_COMMON_DATA(119)
};
static const struct meson_gpio_irq_params gxbb_params = {
- .nr_hwirq = 133,
+ INIT_MESON8_COMMON_DATA(133)
};
static const struct meson_gpio_irq_params gxl_params = {
- .nr_hwirq = 110,
+ INIT_MESON8_COMMON_DATA(110)
};
static const struct meson_gpio_irq_params axg_params = {
- .nr_hwirq = 100,
+ INIT_MESON8_COMMON_DATA(100)
};
static const struct meson_gpio_irq_params sm1_params = {
- .nr_hwirq = 100,
+ INIT_MESON8_COMMON_DATA(100)
.support_edge_both = true,
+ .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,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 },
{ }
};
writel_relaxed(tmp, ctl->base + reg);
}
-static unsigned int meson_gpio_irq_channel_to_reg(unsigned int channel)
+static void meson_gpio_irq_init_dummy(struct meson_gpio_irq_controller *ctl)
+{
+}
+
+static void meson8_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl,
+ unsigned int channel, unsigned long hwirq)
+{
+ unsigned int reg_offset;
+ unsigned int bit_offset;
+
+ reg_offset = (channel < 4) ? REG_PIN_03_SEL : REG_PIN_47_SEL;
+ bit_offset = REG_PIN_SEL_SHIFT(channel);
+
+ meson_gpio_irq_update_bits(ctl, reg_offset,
+ ctl->params->pin_sel_mask << bit_offset,
+ hwirq << bit_offset);
+}
+
+static void meson_a1_gpio_irq_sel_pin(struct meson_gpio_irq_controller *ctl,
+ unsigned int channel,
+ unsigned long hwirq)
{
- return (channel < 4) ? REG_PIN_03_SEL : REG_PIN_47_SEL;
+ 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
unsigned long hwirq,
u32 **channel_hwirq)
{
- unsigned int reg, idx;
+ unsigned int idx;
spin_lock(&ctl->lock);
* Setup the mux of the channel to route the signal of the pad
* to the appropriate input of the GIC
*/
- reg = meson_gpio_irq_channel_to_reg(idx);
- meson_gpio_irq_update_bits(ctl, reg,
- 0xff << REG_PIN_SEL_SHIFT(idx),
- hwirq << REG_PIN_SEL_SHIFT(idx));
+ ctl->params->ops.gpio_irq_sel_pin(ctl, idx, hwirq);
/*
* Get the hwirq number assigned to this channel through
{
u32 val = 0;
unsigned int idx;
+ const struct meson_gpio_irq_params *params;
+ params = ctl->params;
idx = meson_gpio_irq_get_channel_idx(ctl, channel_hwirq);
/*
* precedence over the other edge/polarity settings
*/
if (type == IRQ_TYPE_EDGE_BOTH) {
- if (!ctl->params->support_edge_both)
+ if (!params->support_edge_both)
return -EINVAL;
- val |= REG_BOTH_EDGE(idx);
+ val |= REG_BOTH_EDGE(params, idx);
} else {
if (type & (IRQ_TYPE_EDGE_RISING | IRQ_TYPE_EDGE_FALLING))
- val |= REG_EDGE_POL_EDGE(idx);
+ val |= REG_EDGE_POL_EDGE(params, idx);
if (type & (IRQ_TYPE_LEVEL_LOW | IRQ_TYPE_EDGE_FALLING))
- val |= REG_EDGE_POL_LOW(idx);
+ val |= REG_EDGE_POL_LOW(params, idx);
}
spin_lock(&ctl->lock);
meson_gpio_irq_update_bits(ctl, REG_EDGE_POL,
- REG_EDGE_POL_MASK(idx), val);
+ REG_EDGE_POL_MASK(params, idx), val);
spin_unlock(&ctl->lock);
return ret;
}
+ ctl->params->ops.gpio_irq_init(ctl);
+
return 0;
}
projects / linux.git / blobdiff