soc/amd/common: Introduce I2C driver common to all AMD SoCs

I2C driver is replicated in each generation of AMD SoCs. Introduce a
common I2C driver that can be used across all the AMD SoCs. To begin
with, peripheral reset functionality is moved into this common driver.
SoC specific I2C driver passes the SCL pin configuration in order for
the common driver to reset the peripherals. More functionality can be
moved here in subsequent changes.

Also sb_reset_i2c_slaves() is renamed as sb_reset_i2c_peripherals() as
an effort towards using inclusive language.

BUG=None
TEST=Build Dalboz and Grunt. Boot to OS in Dalboz. Ensure that the I2C
peripherals are detected as earlier in Dalboz.
localhost ~ # i2cdetect -y 0
Warning: Can't use SMBus Quick Write command, will skip some addresses
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:
10:
20:
30: -- -- -- -- -- -- -- --
40:
50: 50 51 -- -- -- -- -- -- 58 59 -- -- -- -- -- --
60:
70:
localhost ~ # i2cdetect -y 1
Warning: Can't use SMBus Quick Write command, will skip some addresses
     0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f
00:
10:
20:
30: -- -- -- -- -- -- -- --
40:
50: UU -- -- -- -- -- -- -- -- -- -- -- -- -- -- --
60:
70:

Change-Id: I9f735dcfe8375abdc88ff06e8c4f8a6b741bc085
Signed-off-by: Karthikeyan Ramasubramanian <kramasub@google.com>
Suggested-by: Kyosti Malkki <kyosti.malkki@gmail.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/51404
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Mathew King <mathewk@chromium.org>
Reviewed-by: Furquan Shaikh <furquan@google.com>

1 files changed, 0 insertions, 7 deletions

diff --git a/src/soc/amd/picasso/include/soc/i2c.h b/src/soc/amd/picasso/include/soc/i2c.h
index 41b930b1869f..f62cb11dc434 100644
--- a/src/soc/amd/picasso/include/soc/i2c.h
+++ b/src/soc/amd/picasso/include/soc/i2c.h
@@ -6,11 +6,6 @@
 #include <types.h>
 #include <soc/gpio.h>
 
-struct soc_amd_i2c_save {
-	uint32_t control_value;
-	uint8_t mux_value;
-};
-
 #define GPIO_I2C2_SCL		BIT(2)
 #define GPIO_I2C3_SCL		BIT(3)
 #define GPIO_I2C_MASK		(BIT(2) | BIT(3))
@@ -28,8 +23,6 @@ struct soc_amd_i2c_save {
 #define USB_PD_RFMUX_OVERRIDE	BIT(8)
 #define USB_PD_DP_OVERRIDE	BIT(9)
 
-void sb_reset_i2c_slaves(void);
-
 /* Sets the base address for the specific I2C bus. */
 void i2c_set_bar(unsigned int bus, uintptr_t bar);