IT8772F: Clean up it8772f includes and add a LED API

- Remove it8772f c includes
- Add a new LED API, it8772f_gpio_led
- Stumpy: using it8772f_gpio_led

BUG=chrome-os-partner:28232
BRANCH=Guado
TEST=emerge-guado coreboot chromeos-bootimage

Change-Id: I08de52515d3c1e7e85d1761c09a0cebffda7dda3
Signed-off-by: David Wu <David_Wu@quantatw.com>
Reviewed-on: https://chromium-review.googlesource.com/241813
Tested-by: David Wu <david_wu@quantatw.com>
Reviewed-by: Shawn N <shawnn@chromium.org>
Commit-Queue: David Wu <david_wu@quantatw.com>
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/12797
Tested-by: build bot (Jenkins)
Reviewed-by: Kyösti Mälkki <kyosti.malkki@gmail.com>

src/mainboard/samsung/stumpy/romstage.c

@@ -155,7 +155,10 @@ static void setup_sio_gpios(void)
 	/*
 	 * GPIO45 as LED_POWER#
 	 */
-	it8772f_gpio_setup(DUMMY_DEV, 4, 0x20, 0x20, 0x20, 0x20, 0x20);
+	it8772f_gpio_led(DUMMY_DEV, 4 /* set */, (0x1<<5) /* select */,
+		0x00 /* polarity: non-inverting */, 0x00 /* 0=pulldown */,
+		(0x1<<5) /* output */, (0x1<<5) /* 1=Simple IO function */,
+		SIO_GPIO_BLINK_GPIO45, IT8772F_GPIO_BLINK_FREQUENCY_1_HZ);
 
 	/*
 	 * GPIO51 as USBPWRON8#

src/mainboard/samsung/stumpy/smihandler.c

@@ -22,44 +22,32 @@
 #include <northbridge/intel/sandybridge/sandybridge.h>
 #include <cpu/intel/model_206ax/model_206ax.h>
 
-/* FIXME: Include romstage serial for SIO helper functions */
+/* Include for SIO helper functions */
-#include <superio/ite/it8772f/early_init.c>
+#include <superio/ite/it8772f/it8772f.h>
-//#include <superio/ite/it8772f/it8772f.h>
 #define DUMMY_DEV PNP_DEV(0x2e, 0)
 
 /*
  * Change LED_POWER# (SIO GPIO 45) state based on sleep type.
- * The IO address is hardcoded as we don't have device path in SMM.
 */
-#define SIO_GPIO_BASE_SET4	(0x730 + 3)
-#define SIO_GPIO_BLINK_GPIO45	0x25
 void mainboard_smi_sleep(u8 slp_typ)
 {
-	u8 reg8;
+	printk(BIOS_DEBUG, "SMI: sleep S%d\n", slp_typ);
-
 	switch (slp_typ) {
 	case 3:
 	case 4:
-		/* Blink LED */
+		it8772f_gpio_led(DUMMY_DEV, 4 /* set */, (0x1<<5) /* select */,
-		it8772f_enter_conf(DUMMY_DEV);
+			(0x1<<5) /* polarity */, (0x1<<5) /* 1=pullup */,
-		it8772f_sio_write(DUMMY_DEV, IT8772F_CONFIG_REG_LDN, IT8772F_GPIO);
+			(0x1<<5) /* output */, 0x00, /* 0=Alternate function */
-		/* Enable blink pin map */
+			SIO_GPIO_BLINK_GPIO45, IT8772F_GPIO_BLINK_FREQUENCY_1_HZ);
-		it8772f_sio_write(DUMMY_DEV, IT8772F_GPIO_LED_BLINK1_PINMAP,
-				  SIO_GPIO_BLINK_GPIO45);
-		/* Enable 4HZ blink */
-		it8772f_sio_write(DUMMY_DEV, IT8772F_GPIO_LED_BLINK1_CONTROL, 0x02);
-		/* Set GPIO to alternate function */
-		reg8 = it8772f_sio_read(DUMMY_DEV, GPIO_REG_ENABLE(3));
-		reg8 &= ~(1 << 5);
-		it8772f_sio_write(DUMMY_DEV, GPIO_REG_ENABLE(3), reg8);
-		it8772f_exit_conf(DUMMY_DEV);
 		break;
 
 	case 5:
-		/* Turn off LED */
+		it8772f_gpio_led(DUMMY_DEV, 4 /* set */, (0x1<<5) /* select */,
-		reg8 = inb(SIO_GPIO_BASE_SET4);
+			0x00 /* polarity: non-inverting */, 0x00 /* 0=pulldown */,
-		reg8 |= (1 << 5);
+			(0x1<<5) /* output */, (0x1<<5) /* 1=Simple IO function */,
-		outb(reg8, SIO_GPIO_BASE_SET4);
+			SIO_GPIO_BLINK_GPIO45, IT8772F_GPIO_BLINK_FREQUENCY_1_HZ);
+		break;
+	default:
 		break;
 	}
 }

src/superio/ite/it8772f/Makefile.inc

@@ -16,3 +16,4 @@
 
 romstage-$(CONFIG_SUPERIO_ITE_IT8772F) += early_init.c
 ramstage-$(CONFIG_SUPERIO_ITE_IT8772F) += superio.c
+smm-$(CONFIG_SUPERIO_ITE_IT8772F) += early_init.c

src/superio/ite/it8772f/early_init.c

@@ -81,3 +81,22 @@ void it8772f_gpio_setup(pnp_devfn_t dev, int set, u8 select, u8 polarity,
 	it8772f_sio_write(dev, GPIO_REG_PULLUP(set), pullup);
 	it8772f_exit_conf(dev);
 }
+
+/* Configure LED GPIOs */
+void it8772f_gpio_led(pnp_devfn_t dev,int set, u8 select, u8 polarity, u8 pullup,
+			u8 output, u8 enable, u8 led_pin_map, u8 led_freq)
+{
+	set--; /* Set 1 is offset 0 */
+	it8772f_enter_conf(dev);
+	it8772f_sio_write(dev, IT8772F_CONFIG_REG_LDN, IT8772F_GPIO);
+	if (set < 5) {
+		it8772f_sio_write(dev, IT8772F_GPIO_LED_BLINK1_PINMAP, led_pin_map);
+		it8772f_sio_write(dev, IT8772F_GPIO_LED_BLINK1_CONTROL, led_freq);
+		it8772f_sio_write(dev, GPIO_REG_SELECT(set), select);
+		it8772f_sio_write(dev, GPIO_REG_ENABLE(set), enable);
+		it8772f_sio_write(dev, GPIO_REG_POLARITY(set), polarity);
+	}
+	it8772f_sio_write(dev, GPIO_REG_OUTPUT(set), output);
+	it8772f_sio_write(dev, GPIO_REG_PULLUP(set), pullup);
+	it8772f_exit_conf(dev);
+}

src/superio/ite/it8772f/it8772f.h

@@ -92,12 +92,29 @@
 
 /* GPIO interface */
 #define IT8772F_GPIO_LED_BLINK1_PINMAP		0xf8
+
+#define SIO_GPIO_BLINK_GPIO10 0x08
+#define SIO_GPIO_BLINK_GPIO45 0x25
+
 #define IT8772F_GPIO_LED_BLINK1_CONTROL		0xf9
 
+#define IT8772F_GPIO_BLINK_FREQUENCY_4_HZ   (0<<1)
+#define IT8772F_GPIO_BLINK_FREQUENCY_1_HZ   (1<<1)
+#define IT8772F_GPIO_BLINK_FREQUENCY_1_4_HZ (2<<1)
+#define IT8772F_GPIO_BLINK_FREQUENCY_1_8_HZ (3<<1)
+
 #define GPIO_REG_SELECT(x)   (0x25 + (x))
+
+/* GPIO Polarity Select: 1: Inverting, 0: Non-inverting */
 #define GPIO_REG_POLARITY(x) (0xb0 + (x))
+
+/* GPIO Inernal Pull-up: 1: Enable, 0: Disable */
 #define GPIO_REG_PULLUP(x)   (0xb8 + (x))
+
+/* GPIO Fucntion Select: 1: Simple I/O, 0: Alternate function */
 #define GPIO_REG_ENABLE(x)   (0xc0 + (x))
+
+/* GPIO Mode: 0: input mode, 1: output mode */
 #define GPIO_REG_OUTPUT(x)   (0xc8 + (x))
 
 #include <arch/io.h>
@@ -116,5 +133,8 @@ void it8772f_gpio_setup(pnp_devfn_t dev, int set, u8 select, u8 polarity,
 
 void it8772f_enter_conf(pnp_devfn_t dev);
 void it8772f_exit_conf(pnp_devfn_t dev);
+void it8772f_gpio_led(pnp_devfn_t dev, int set, u8 select, u8 polarity, u8 pullup,
+			u8 output, u8 enable, u8 led_pin_map, u8 led_freq);
+
 
 #endif /* SUPERIO_ITE_IT8772F_H */