From 244cf7d3a6d8db2a2ea5541815a0bd4e564c8195 Mon Sep 17 00:00:00 2001 From: Angel Pons Date: Sat, 5 Dec 2020 20:25:27 +0100 Subject: sb/intel/x/smbus.c: Add block read/write support Copy and paste the i82801gx code onto all newer southbridges. This will be factored out into common code in a follow-up. Change-Id: Ic4b7d657865f61703e4310423c565786badf6f40 Signed-off-by: Angel Pons Reviewed-on: https://review.coreboot.org/c/coreboot/+/48363 Tested-by: build bot (Jenkins) Reviewed-by: Nico Huber --- src/southbridge/intel/lynxpoint/smbus.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) (limited to 'src/southbridge/intel/lynxpoint') diff --git a/src/southbridge/intel/lynxpoint/smbus.c b/src/southbridge/intel/lynxpoint/smbus.c index d0a621eea1..a173b4366d 100644 --- a/src/southbridge/intel/lynxpoint/smbus.c +++ b/src/southbridge/intel/lynxpoint/smbus.c @@ -51,9 +51,35 @@ static int lsmbus_write_byte(struct device *dev, u8 address, u8 data) return do_smbus_write_byte(res->base, device, address, data); } +static int lsmbus_block_write(struct device *dev, u8 cmd, u8 bytes, const u8 *buf) +{ + u16 device; + struct resource *res; + struct bus *pbus; + + device = dev->path.i2c.device; + pbus = get_pbus_smbus(dev); + res = find_resource(pbus->dev, PCI_BASE_ADDRESS_4); + return do_smbus_block_write(res->base, device, cmd, bytes, buf); +} + +static int lsmbus_block_read(struct device *dev, u8 cmd, u8 bytes, u8 *buf) +{ + u16 device; + struct resource *res; + struct bus *pbus; + + device = dev->path.i2c.device; + pbus = get_pbus_smbus(dev); + res = find_resource(pbus->dev, PCI_BASE_ADDRESS_4); + return do_smbus_block_read(res->base, device, cmd, bytes, buf); +} + static struct smbus_bus_operations lops_smbus_bus = { .read_byte = lsmbus_read_byte, .write_byte = lsmbus_write_byte, + .block_read = lsmbus_block_read, + .block_write = lsmbus_block_write, }; static void smbus_read_resources(struct device *dev) -- cgit v1.2.3