intel/common/block/i2c: Add common block for I2C and use the same in SoCs

In the intel/common/block
* Move I2C common code from intel/common to intel/common/block.
* Split the code into common, early init and post mem init stages and put it
  in lpss_i2c.c, i2c_early.c and i2c.c respectively.
* Declare functions for getting platform specific i2c bus config and
  mapping bus to devfn and vice versa, that have to be implemented by SoC.

In skylake/apollolake
* Stop using code from soc/intel/common/lpss_i2c.c.
* Remove early i2c initialization code from bootblock.
* Refactor i2c.c file to implement SoC specific methods
  required by the I2C IP block.

Change-Id: I4d91a04c22e181e3a995112cce6d5f0324130b81
Signed-off-by: Rizwan Qureshi <rizwan.qureshi@intel.com>
Reviewed-on: https://review.coreboot.org/19468
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>

1 files changed, 3 insertions, 3 deletions

diff --git a/src/soc/intel/skylake/Makefile.inc b/src/soc/intel/skylake/Makefile.inc
index d25332c93a..6f1d1d5112 100644
--- a/src/soc/intel/skylake/Makefile.inc
+++ b/src/soc/intel/skylake/Makefile.inc
@@ -11,7 +11,7 @@ subdirs-y += ../../../cpu/x86/tsc
 
 bootblock-y += bootblock/bootblock.c
 bootblock-y += bootblock/cpu.c
-bootblock-y += bootblock/i2c.c
+bootblock-y += i2c.c
 bootblock-y += bootblock/pch.c
 bootblock-y += bootblock/report_platform.c
 bootblock-$(CONFIG_UART_DEBUG) += bootblock/uart.c
@@ -29,13 +29,13 @@ verstage-y += monotonic_timer.c
 verstage-y += pch.c
 verstage-$(CONFIG_UART_DEBUG) += uart_debug.c
 verstage-y += pmutil.c
-verstage-y += bootblock/i2c.c
+verstage-y += i2c.c
 verstage-y += spi.c
 verstage-y += tsc_freq.c
 
 romstage-y += gpio.c
 romstage-y += gspi.c
-romstage-y += bootblock/i2c.c
+romstage-y += i2c.c
 romstage-y += memmap.c
 romstage-y += monotonic_timer.c
 romstage-y += me.c