x1000: GPIO refactor

The GPIO API was pretty clunky and pin settings were decentralized,
making it hard to see what was happening and making GPIO stuff look
like a mess, frankly.

Instead of passing clunky (port, pin) pairs everywhere, GPIOs are now
identified with a single int. The extra overhead should be minimal as
GPIO configuration is generally not on a performance-critical path.

Pin assignments are now mostly consolidated in gpio-target.h and put
in various tables so gpio_init() can assign most pins at boot time.

Most drivers no longer need to touch GPIOs and basic pin I/O stuff
can happen without config since pins are put into the right state.
IRQ pins still need to be configured manually before use.

Change-Id: Ic5326284b0b2a2f613e9e76a41cb50e24af3aa47

1 files changed, 26 insertions, 0 deletions

diff --git a/firmware/target/mips/ingenic_x1000/fiiom3k/gpio-target.h b/firmware/target/mips/ingenic_x1000/fiiom3k/gpio-target.h
new file mode 100644
index 0000000000..f580cd9167
--- /dev/null
+++ b/firmware/target/mips/ingenic_x1000/fiiom3k/gpio-target.h
@@ -0,0 +1,26 @@
+/*              Name            Port    Pins            Function */
+DEFINE_PINGROUP(LCD_DATA,       GPIO_A, 0xffff <<  0,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(LCD_CONTROL,    GPIO_B,   0x1a << 16,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(MSC0,           GPIO_A,   0x3f << 20,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(SFC,            GPIO_A,   0x3f << 26,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(I2S,            GPIO_B,   0x1f <<  0,   GPIOF_DEVICE(1))
+DEFINE_PINGROUP(DMIC,           GPIO_B,      3 << 21,   GPIOF_DEVICE(0))
+DEFINE_PINGROUP(I2C0,           GPIO_B,      3 << 23,   GPIOF_DEVICE(0))
+DEFINE_PINGROUP(I2C1,           GPIO_C,      3 << 26,   GPIOF_DEVICE(0))
+DEFINE_PINGROUP(I2C2,           GPIO_D,      3 <<  0,   GPIOF_DEVICE(1))
+
+/*          Name                Pin             Function */
+DEFINE_GPIO(AK4376_POWER,       GPIO_PA(16),    GPIOF_OUTPUT(0))
+DEFINE_GPIO(BTN_PLAY,           GPIO_PA(17),    GPIOF_INPUT)
+DEFINE_GPIO(BTN_VOL_UP,         GPIO_PA(19),    GPIOF_INPUT)
+DEFINE_GPIO(MSC0_CD,            GPIO_PB(6),     GPIOF_INPUT)
+DEFINE_GPIO(USB_ID,             GPIO_PB(7),     GPIOF_INPUT)
+DEFINE_GPIO(AXP_IRQ,            GPIO_PB(10),    GPIOF_INPUT)
+DEFINE_GPIO(USB_DETECT,         GPIO_PB(11),    GPIOF_INPUT)
+DEFINE_GPIO(FT6x06_INTERRUPT,   GPIO_PB(12),    GPIOF_INPUT)
+DEFINE_GPIO(FT6x06_RESET,       GPIO_PB(15),    GPIOF_OUTPUT(0))
+DEFINE_GPIO(LCD_RD,             GPIO_PB(16),    GPIOF_OUTPUT(1))
+DEFINE_GPIO(LCD_CE,             GPIO_PB(18),    GPIOF_OUTPUT(1))
+DEFINE_GPIO(USB_DRVVBUS,        GPIO_PB(25),    GPIOF_OUTPUT(0))
+DEFINE_GPIO(BTN_VOL_DOWN,       GPIO_PB(28),    GPIOF_INPUT)
+DEFINE_GPIO(BTN_POWER,          GPIO_PB(31),    GPIOF_INPUT)