veyron_*: Move PMIC_BUS to a Kconfig variable

This moves PMIC_BUS from each mainboard's board.h file to a per-
mainboard Kconfig variable. To prevent humans from forgetting to
set a valid value, an invalid default is set in the rk3288 Kconfig
and checked in rk808.c so that compilation will fail if the mainboard
Kconfig does not override it.

Originally, PMIC_BUS was only used by mainboard code as an argument
to RK808 PMIC functions. To conform to the generic RTC API, however,
the RK808 code needs to have the bus number globally defined somewhere
since the rtc_get() and rtc_set() functions don't take any args.

Since CONFIG_PMIC_BUS is globally visible, we no longer need to pass
bus number to the PMIC functions.

BUG=chrome-os-partner:34436
BRANCH=none
TEST=built and booted on Pinky

Signed-off-by: David Hendricks <dhendrix@chromium.org>
Change-Id: I73783878e507b2e7b1526dd2f81cfbdf8f1e2a55
Reviewed-on: https://chromium-review.googlesource.com/240203
Reviewed-by: Julius Werner <jwerner@chromium.org>
Reviewed-on: http://review.coreboot.org/9642
Tested-by: build bot (Jenkins)
Reviewed-by: Marc Jones <marc.jones@se-eng.com>

5 files changed, 18 insertions, 15 deletions

diff --git a/src/mainboard/google/veyron_mighty/Kconfig b/src/mainboard/google/veyron_mighty/Kconfig
index 6716cbe3ad..bff499aa9d 100644
--- a/src/mainboard/google/veyron_mighty/Kconfig
+++ b/src/mainboard/google/veyron_mighty/Kconfig
@@ -84,4 +84,8 @@ config CONSOLE_SERIAL_UART_ADDRESS
 	depends on CONSOLE_SERIAL_UART
 	default 0xFF690000
 
+config PMIC_BUS
+	int
+	default 0
+
 endif #  BOARD_GOOGLE_VEYRON_MIGHTY
diff --git a/src/mainboard/google/veyron_mighty/board.h b/src/mainboard/google/veyron_mighty/board.h
index 237fc287be..249552e79d 100644
--- a/src/mainboard/google/veyron_mighty/board.h
+++ b/src/mainboard/google/veyron_mighty/board.h
@@ -23,8 +23,6 @@
 #include <boardid.h>
 #include <gpio.h>
 
-#define PMIC_BUS 0
-
 #define GPIO_RESET	GPIO(0, B, 5)
 
 /* TODO: move setup_chromeos_gpios() here once bootblock code is in mainboard */
diff --git a/src/mainboard/google/veyron_mighty/bootblock.c b/src/mainboard/google/veyron_mighty/bootblock.c
index 5571d456f8..90ad744980 100644
--- a/src/mainboard/google/veyron_mighty/bootblock.c
+++ b/src/mainboard/google/veyron_mighty/bootblock.c
@@ -48,12 +48,13 @@ void bootblock_mainboard_init(void)
 	/* Up VDD_CPU (BUCK1) to 1.4V to support max CPU frequency (1.8GHz). */
 	setbits_le32(&rk3288_pmu->iomux_i2c0scl, IOMUX_I2C0SCL);
 	setbits_le32(&rk3288_pmu->iomux_i2c0sda, IOMUX_I2C0SDA);
-	i2c_init(PMIC_BUS, 400*KHz);
+	assert(CONFIG_PMIC_BUS == 0);	/* must correspond with IOMUX */
+	i2c_init(CONFIG_PMIC_BUS, 400*KHz);
 
 	/* Slowly raise to max CPU voltage to prevent overshoot */
-	rk808_configure_buck(PMIC_BUS, 1, 1200);
+	rk808_configure_buck(1, 1200);
 	udelay(175);/* Must wait for voltage to stabilize,2mV/us */
-	rk808_configure_buck(PMIC_BUS, 1, 1400);
+	rk808_configure_buck(1, 1400);
 	udelay(100);/* Must wait for voltage to stabilize,2mV/us */
 	rkclk_configure_cpu();
 
diff --git a/src/mainboard/google/veyron_mighty/mainboard.c b/src/mainboard/google/veyron_mighty/mainboard.c
index c7d51cc948..3bf5724e37 100644
--- a/src/mainboard/google/veyron_mighty/mainboard.c
+++ b/src/mainboard/google/veyron_mighty/mainboard.c
@@ -54,8 +54,8 @@ static void configure_sdmmc(void)
 	writel(RK_CLRBITS(1 << 12), &rk3288_grf->soc_con0);
 
 	/* Note: these power rail definitions are copied in romstage.c */
-	rk808_configure_ldo(PMIC_BUS, 4, 3300); /* VCCIO_SD */
-	rk808_configure_ldo(PMIC_BUS, 5, 3300); /* VCC33_SD */
+	rk808_configure_ldo(4, 3300); /* VCCIO_SD */
+	rk808_configure_ldo(5, 3300); /* VCC33_SD */
 
 	gpio_input(GPIO(7, A, 5));		/* SD_DET */
 }
@@ -77,7 +77,7 @@ static void configure_codec(void)
 	writel(IOMUX_I2S, &rk3288_grf->iomux_i2s);
 	writel(IOMUX_I2SCLK, &rk3288_grf->iomux_i2sclk);
 
-	rk808_configure_ldo(PMIC_BUS, 6, 1800);	/* VCC18_CODEC */
+	rk808_configure_ldo(6, 1800);	/* VCC18_CODEC */
 
 	/* AUDIO IO domain 1.8V voltage selection */
 	writel(RK_SETBITS(1 << 6), &rk3288_grf->io_vsel);
@@ -93,15 +93,15 @@ static void configure_vop(void)
 
 	switch (board_id()) {
 	case 0:
-		rk808_configure_switch(PMIC_BUS, 2, 1);	/* VCC18_LCD */
-		rk808_configure_ldo(PMIC_BUS, 7, 2500);	/* VCC10_LCD_PWREN_H */
-		rk808_configure_switch(PMIC_BUS, 1, 1);	/* VCC33_LCD */
+		rk808_configure_switch(2, 1);	/* VCC18_LCD */
+		rk808_configure_ldo(7, 2500);	/* VCC10_LCD_PWREN_H */
+		rk808_configure_switch(1, 1);	/* VCC33_LCD */
 		break;
 	default:
 		gpio_output(GPIO(2, B, 5), 1);	/* AVDD_1V8_DISP_EN */
-		rk808_configure_ldo(PMIC_BUS, 7, 2500);	/* VCC10_LCD_PWREN_H */
+		rk808_configure_ldo(7, 2500);	/* VCC10_LCD_PWREN_H */
 		gpio_output(GPIO(7, B, 6), 1);	/* LCD_EN */
-		rk808_configure_switch(PMIC_BUS, 1, 1);	/* VCC33_LCD */
+		rk808_configure_switch(1, 1);	/* VCC33_LCD */
 		break;
 	}
 }
diff --git a/src/mainboard/google/veyron_mighty/romstage.c b/src/mainboard/google/veyron_mighty/romstage.c
index 995609afc3..1eed268fa7 100644
--- a/src/mainboard/google/veyron_mighty/romstage.c
+++ b/src/mainboard/google/veyron_mighty/romstage.c
@@ -79,8 +79,8 @@ static void configure_l2ctlr(void)
 
 static void sdmmc_power_off(void)
 {
-	rk808_configure_ldo(PMIC_BUS, 4, 0); /* VCCIO_SD */
-	rk808_configure_ldo(PMIC_BUS, 5, 0); /* VCC33_SD */
+	rk808_configure_ldo(4, 0); /* VCCIO_SD */
+	rk808_configure_ldo(5, 0); /* VCC33_SD */
 }
 
 void main(void)