From 13a2ef6cbd0838a7965914dda3b4a63ff4ae5440 Mon Sep 17 00:00:00 2001
From: Shiyu Sun <sshiyu@google.com>
Date: Thu, 19 Mar 2020 14:37:57 +1100
Subject: lspcon_i2c_spi.c: Add SPI-master support for PS17{5,6}

This adds support for the Parade lspcon usb-c to HDMI protocol
translater part that is i2c-controlled. The support allows the
host to reach the SPI ROM that hangs off the part where it
stores its firmware.

Usage is as follows:
	flashrom -p lspcon_i2c_spi:bus=X
	where X is the bus number.

BUG=b:148746232
BRANCH=none
TEST=tested with following commands, read/write/erase works good.
	flashrom -p lspcon_i2c_spi:bus=7 -r /tmp/foo;
	flashrom -p lspcon_i2c_spi:bus=7 -E;
	flashrom -p lspcon_i2c_spi:bus=7 -w /tmp/foo;

Change-Id: I039e683252cfaf1ffef8694a3e8081b1b6b944f7
Signed-off-by: Shiyu Sun <sshiyu@chromium.org>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/39687
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Edward O'Callaghan <quasisec@chromium.org>
---
 Makefile | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)

(limited to 'Makefile')

diff --git a/Makefile b/Makefile
index 433d8f76..a533acf3 100644
--- a/Makefile
+++ b/Makefile
@@ -195,6 +195,11 @@ UNSUPPORTED_FEATURES += CONFIG_STLINKV3_SPI=yes
 else
 override CONFIG_STLINKV3_SPI = no
 endif
+ifeq ($(CONFIG_LSPCON_I2C_SPI), yes)
+UNSUPPORTED_FEATURES += CONFIG_LSPCON_I2C_SPI=yes
+else
+override CONFIG_LSPCON_I2C_SPI = no
+endif
 # libjaylink is also not available for DOS
 ifeq ($(CONFIG_JLINK_SPI), yes)
 UNSUPPORTED_FEATURES += CONFIG_JLINK_SPI=yes
@@ -306,6 +311,11 @@ UNSUPPORTED_FEATURES += CONFIG_SATAMV=yes
 else
 override CONFIG_SATAMV = no
 endif
+ifeq ($(CONFIG_LSPCON_I2C_SPI), yes)
+UNSUPPORTED_FEATURES += CONFIG_LSPCON_I2C_SPI=yes
+else
+override CONFIG_LSPCON_I2C_SPI = no
+endif
 endif
 
 ifneq ($(TARGET_OS), MinGW)
@@ -381,6 +391,11 @@ UNSUPPORTED_FEATURES += CONFIG_STLINKV3_SPI=yes
 else
 override CONFIG_STLINKV3_SPI = no
 endif
+ifeq ($(CONFIG_LSPCON_I2C_SPI), yes)
+UNSUPPORTED_FEATURES += CONFIG_LSPCON_I2C_SPI=yes
+else
+override CONFIG_LSPCON_I2C_SPI = no
+endif
 ifeq ($(CONFIG_CH341A_SPI), yes)
 UNSUPPORTED_FEATURES += CONFIG_CH341A_SPI=yes
 else
@@ -656,6 +671,9 @@ CONFIG_PICKIT2_SPI ?= yes
 # Always enable STLink V3
 CONFIG_STLINKV3_SPI ?= yes
 
+# Disables LSPCON support until the i2c helper supports multiple systems.
+CONFIG_LSPCON_I2C_SPI ?= no
+
 # Always enable dummy tracing for now.
 CONFIG_DUMMY ?= yes
 
@@ -736,6 +754,7 @@ override CONFIG_DEVELOPERBOX_SPI = no
 override CONFIG_PICKIT2_SPI = no
 override CONFIG_RAIDEN = no
 override CONFIG_STLINKV3_SPI = no
+override CONFIG_LSPCON_I2C_SPI = no
 endif
 ifeq ($(CONFIG_ENABLE_LIBPCI_PROGRAMMERS), no)
 override CONFIG_INTERNAL = no
@@ -914,6 +933,12 @@ PROGRAMMER_OBJS += stlinkv3_spi.o
 NEED_LIBUSB1 += CONFIG_STLINKV3_SPI
 endif
 
+ifeq ($(CONFIG_LSPCON_I2C_SPI), yes)
+FEATURE_CFLAGS += -D'CONFIG_LSPCON_I2C_SPI=1'
+PROGRAMMER_OBJS += lspcon_i2c_spi.o
+NEED_LIBUSB1 += CONFIG_LSPCON_I2C_SPI
+endif
+
 ifneq ($(NEED_LIBFTDI), )
 FTDILIBS := $(call debug_shell,[ -n "$(PKG_CONFIG_LIBDIR)" ] && export PKG_CONFIG_LIBDIR="$(PKG_CONFIG_LIBDIR)" ; $(PKG_CONFIG) --libs libftdi1 || $(PKG_CONFIG) --libs libftdi || printf "%s" "-lftdi -lusb")
 FEATURE_CFLAGS += $(call debug_shell,grep -q "FT232H := yes" .features && printf "%s" "-D'HAVE_FT232H=1'")
-- 
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