power: make most tps drivers and the twl4030 driver compatible with DM_I2C

Those driver are not DM drivers per se (not using the PMIC/regulator
framework) and are using the legacy I2C API. Make them compatible with
the DM_I2C API.

This impacts the following drivers:
- palmas (used by am57xx/dra7xx evms)
- tps65218 (used by am43xx evms)
- tps65217 and tps65910 (used by am335x evms and am335x boneblack vboot)
- twl4030 (used by omap3_logicpd)
- tps65217 (used by brppt1)
- twl6030

Signed-off-by: Jean-Jacques Hiblot <jjhiblot@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>

1 files changed, 39 insertions, 0 deletions

diff --git a/drivers/power/twl4030.c b/drivers/power/twl4030.c
index 52460014bf..42c9001518 100644
--- a/drivers/power/twl4030.c
+++ b/drivers/power/twl4030.c
@@ -179,3 +179,42 @@ int do_poweroff(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 	return 0;
 }
 #endif
+
+#ifdef CONFIG_DM_I2C
+int twl4030_i2c_write_u8(u8 chip_no, u8 reg, u8 val)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_write(dev, reg, val);
+	if (ret) {
+		pr_err("writing to twl4030 failed. ret %d\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+int twl4030_i2c_read_u8(u8 chip_no, u8 reg, u8 *valp)
+{
+	struct udevice *dev;
+	int ret;
+
+	ret = i2c_get_chip_for_busnum(0, chip_no, 1, &dev);
+	if (ret) {
+		pr_err("unable to get I2C bus. ret %d\n", ret);
+		return ret;
+	}
+	ret = dm_i2c_reg_read(dev, reg);
+	if (ret < 0) {
+		pr_err("reading from twl4030 failed. ret %d\n", ret);
+		return ret;
+	}
+	*valp = (u8)ret;
+	return 0;
+}
+#endif