dtsi: add pinctrl

Fixes msm8916-mainline#29

dtsi.py

@@ -3,6 +3,10 @@
 from panel import Panel, BacklightControl
 
 
+def has_gpio_backlight(options: Options):
+ return 'backlight' in options.gpios
+
+
 def generate_backlight(p: Panel):
  if p.backlight == BacklightControl.DCS:
  return ""
@@ -14,6 +18,7 @@ def generate_supplies(options: Options):
  if options.regulator:
  for r in options.regulator:
  s += f"\t\t{r}-supply = <&...>;\n"
+ s += f"\n"
  return s
 
 
@@ -22,6 +27,43 @@ def generate_gpios(options: Options):
  for name, flags in options.gpios.items():
  flags = "GPIO_ACTIVE_LOW" if flags & GpioFlag.ACTIVE_LOW else "GPIO_ACTIVE_HIGH"
  s += f"\t\t{name}-gpios = <&tlmm XY {flags}>;\n"
+
+ if has_gpio_backlight(options):
+ s += '''
+ pinctrl-0 = <&lcd_bl_en_default>;
+ pinctrl-names = "default";
+'''
+ return s
+
+
+def generate_tlmm(options: Options):
+ s = "&tlmm {"
+ if has_gpio_backlight(options):
+ s += '''
+ lcd_bl_en_default: lcd-bl-en-default-state {
+ pins = "gpioXY";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-disable;
+ };
+'''
+
+ s += '''
+ mdss_default: mdss-default-state {
+ pins = "gpioXY";
+ function = "gpio";
+ drive-strength = <8>;
+ bias-disable;
+ };
+
+ mdss_sleep: mdss-sleep-state {
+ pins = "gpioXY";
+ function = "gpio";
+ drive-strength = <2>;
+ bias-pull-down;
+ };
+};
+'''
  return s
 
 
@@ -35,6 +77,10 @@ def generate_panel_dtsi(p: Panel, options: Options) -> None:
 ''')
  f.write(f'''\
 &mdss_dsi0 {{
+ pinctrl-0 = <&mdss_default>;
+ pinctrl-1 = <&mdss_sleep>;
+ pinctrl-names = "default", "sleep";
+
  panel@0 {{
  compatible = "{options.compatible}";
  reg = <0>;
@@ -55,6 +101,7 @@ def generate_panel_dtsi(p: Panel, options: Options) -> None:
  data-lanes = <{' '.join(map(str, p.lane_map.phys2log[:p.lanes]))}>;
  remote-endpoint = <&panel_in>;
 }};
+
 ''')
 
  if p.ldo_mode:
@@ -69,3 +116,5 @@ def generate_panel_dtsi(p: Panel, options: Options) -> None:
  phy-type = <PHY_TYPE_CPHY>;
 };
 ''')
+
+ f.write(f'''{generate_tlmm(options)}''')