pwm: sun4i: Add support for PWM controller on sun5i SoCs

The PWM controller on sun5i SoCs is identical to the one found on sun7i
SoCs. On the A13 package only one of the 2 pins is routed to the outside,
so only advertise one PWM channel there.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

diff --git a/Documentation/devicetree/bindings/pwm/pwm-sun4i.txt b/Documentation/devicetree/bindings/pwm/pwm-sun4i.txt
index ae0273e19506289420afc6862df09ad00c6e6a62..cf6068b8e9743ce5bdc7f927c936d7f010ba8e00 100644 (file)
--- a/Documentation/devicetree/bindings/pwm/pwm-sun4i.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-sun4i.txt
@@ -3,6 +3,8 @@ Allwinner sun4i and sun7i SoC PWM controller
 Required properties:
   - compatible: should be one of:
     - "allwinner,sun4i-a10-pwm"
+    - "allwinner,sun5i-a10s-pwm"
+    - "allwinner,sun5i-a13-pwm"
     - "allwinner,sun7i-a20-pwm"
   - reg: physical base address and length of the controller's registers
   - #pwm-cells: should be 3. See pwm.txt in this directory for a description of

diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
index cd9dde5630181d2bf353263b63b58614991b967f..b093cc55f799f2e4350921926f405081c9cb0ebf 100644 (file)
--- a/drivers/pwm/pwm-sun4i.c
+++ b/drivers/pwm/pwm-sun4i.c
@@ -68,6 +68,7 @@ static const u32 prescaler_table[] = {
 struct sun4i_pwm_data {
        bool has_prescaler_bypass;
        bool has_rdy;
+       unsigned int npwm;
 };
 
 struct sun4i_pwm_chip {
@@ -262,17 +263,37 @@ static const struct pwm_ops sun4i_pwm_ops = {
 static const struct sun4i_pwm_data sun4i_pwm_data_a10 = {
        .has_prescaler_bypass = false,
        .has_rdy = false,
+       .npwm = 2,
+};
+
+static const struct sun4i_pwm_data sun4i_pwm_data_a10s = {
+       .has_prescaler_bypass = true,
+       .has_rdy = true,
+       .npwm = 2,
+};
+
+static const struct sun4i_pwm_data sun4i_pwm_data_a13 = {
+       .has_prescaler_bypass = true,
+       .has_rdy = true,
+       .npwm = 1,
 };
 
 static const struct sun4i_pwm_data sun4i_pwm_data_a20 = {
        .has_prescaler_bypass = true,
        .has_rdy = true,
+       .npwm = 2,
 };
 
 static const struct of_device_id sun4i_pwm_dt_ids[] = {
        {
                .compatible = "allwinner,sun4i-a10-pwm",
                .data = &sun4i_pwm_data_a10,
+       }, {
+               .compatible = "allwinner,sun5i-a10s-pwm",
+               .data = &sun4i_pwm_data_a10s,
+       }, {
+               .compatible = "allwinner,sun5i-a13-pwm",
+               .data = &sun4i_pwm_data_a13,
        }, {
                .compatible = "allwinner,sun7i-a20-pwm",
                .data = &sun4i_pwm_data_a20,
@@ -305,14 +326,14 @@ static int sun4i_pwm_probe(struct platform_device *pdev)
        if (IS_ERR(pwm->clk))
                return PTR_ERR(pwm->clk);
 
+       pwm->data = match->data;
        pwm->chip.dev = &pdev->dev;
        pwm->chip.ops = &sun4i_pwm_ops;
        pwm->chip.base = -1;
-       pwm->chip.npwm = 2;
+       pwm->chip.npwm = pwm->data->npwm;
        pwm->chip.can_sleep = true;
        pwm->chip.of_xlate = of_pwm_xlate_with_flags;
        pwm->chip.of_pwm_n_cells = 3;
-       pwm->data = match->data;
 
        spin_lock_init(&pwm->ctrl_lock);