dm: i2c: tegra: Convert to driver model

This converts all Tegra boards over to use driver model for I2C. The driver
is adjusted to use driver model and the following obsolete CONFIGs are
removed:

   - CONFIG_SYS_I2C_INIT_BOARD
   - CONFIG_I2C_MULTI_BUS
   - CONFIG_SYS_MAX_I2C_BUS
   - CONFIG_SYS_I2C_SPEED
   - CONFIG_SYS_I2C

This has been tested on:
- trimslice (no I2C)
- beaver
- Jetson-TK1

It has not been tested on Tegra 114 as I don't have that board.

Acked-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Simon Glass <sjg@chromium.org>

1 files changed, 16 insertions, 5 deletions

diff --git a/arch/arm/cpu/tegra20-common/pmu.c b/arch/arm/cpu/tegra20-common/pmu.c
index c595f70..36a76a2 100644
--- a/arch/arm/cpu/tegra20-common/pmu.c
+++ b/arch/arm/cpu/tegra20-common/pmu.c
@@ -6,6 +6,7 @@
  */
 
 #include <common.h>
+#include <i2c.h>
 #include <tps6586x.h>
 #include <asm/io.h>
 #include <asm/arch/tegra.h>
@@ -23,9 +24,13 @@
 #define VDD_TRANSITION_STEP	0x06	/* 150mv */
 #define VDD_TRANSITION_RATE	0x06	/* 3.52mv/us */
 
+#define PMI_I2C_ADDRESS	0x34	/* chip requires this address */
+
 int pmu_set_nominal(void)
 {
-	int core, cpu, bus;
+	struct udevice *bus, *dev;
+	int core, cpu;
+	int ret;
 
 	/* by default, the table has been filled with T25 settings */
 	switch (tegra_get_chip_sku()) {
@@ -42,12 +47,18 @@ int pmu_set_nominal(void)
 		return -1;
 	}
 
-	bus = tegra_i2c_get_dvc_bus_num();
-	if (bus == -1) {
+	ret = tegra_i2c_get_dvc_bus(&bus);
+	if (ret) {
 		debug("%s: Cannot find DVC I2C bus\n", __func__);
-		return -1;
+		return ret;
 	}
-	tps6586x_init(bus);
+	ret = i2c_get_chip(bus, PMI_I2C_ADDRESS, &dev);
+	if (ret) {
+		debug("%s: Cannot find DVC I2C chip\n", __func__);
+		return ret;
+	}
+
+	tps6586x_init(dev);
 	tps6586x_set_pwm_mode(TPS6586X_PWM_SM1);
 	return tps6586x_adjust_sm0_sm1(core, cpu, VDD_TRANSITION_STEP,
 				VDD_TRANSITION_RATE, VDD_RELATION);