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| author | Denis Brockus <dbrockus@chromium.org> | 2019-06-25 12:44:16 -0600 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2019-07-19 21:11:02 +0000 |
| commit | d1a18f82ed831d4e640336ff5571f5fa64bc7b36 (patch) | |
| tree | c46aeb6136de1c27c66e3d5f662e9620161bef7b /driver/usb_mux | |
| parent | 1f14229fa7e499dfcee07d17add187598ff0a46c (diff) | |
| download | chrome-ec-d1a18f82ed831d4e640336ff5571f5fa64bc7b36.tar.gz | |
Use 7bit I2C/SPI slave addresses in EC
Opt for 7bit slave addresses in EC code. If 8bit is
expected by a driver, make it local and show this in
the naming.
Use __7b, __7bf and __8b as name extensions for i2c/spi
addresses used in the EC codebase. __7b indicates a
7bit address by itself. __7bf indicates a 7bit address
with optional flags attached. __8b indicates a 8bit
address by itself.
Allow space for 10bit addresses, even though this is
not currently being used by any of our attached
devices.
These extensions are for verification purposes only and
will be removed in the last pass of this ticket. I want
to make sure the variable names reflect the type to help
eliminate future 7/8/7-flags confusion.
BUG=chromium:971296
BRANCH=none
TEST=make buildall -j
Change-Id: I2fc3d1b52ce76184492b2aaff3060f486ca45f45
Signed-off-by: Denis Brockus <dbrockus@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/1699893
Reviewed-by: Jack Rosenthal <jrosenth@chromium.org>
Diffstat (limited to 'driver/usb_mux')
| -rw-r--r-- | driver/usb_mux/it5205.c | 4 | ||||
| -rw-r--r-- | driver/usb_mux/it5205.h | 4 | ||||
| -rw-r--r-- | driver/usb_mux/pi3usb30532.c | 8 | ||||
| -rw-r--r-- | driver/usb_mux/ps874x.c | 8 |
4 files changed, 16 insertions, 8 deletions
diff --git a/driver/usb_mux/it5205.c b/driver/usb_mux/it5205.c index 9a6f71dade..745a341591 100644 --- a/driver/usb_mux/it5205.c +++ b/driver/usb_mux/it5205.c @@ -16,12 +16,12 @@ static int it5205_read(int port, uint8_t reg, int *val) { - return i2c_read8(I2C_PORT_USB_MUX, MUX_ADDR(port), reg, val); + return i2c_read8__7bf(I2C_PORT_USB_MUX, MUX_ADDR__7bf(port), reg, val); } static int it5205_write(int port, uint8_t reg, uint8_t val) { - return i2c_write8(I2C_PORT_USB_MUX, MUX_ADDR(port), reg, val); + return i2c_write8__7bf(I2C_PORT_USB_MUX, MUX_ADDR__7bf(port), reg, val); } struct mux_chip_id_t { diff --git a/driver/usb_mux/it5205.h b/driver/usb_mux/it5205.h index b81b33cac3..02d389ad36 100644 --- a/driver/usb_mux/it5205.h +++ b/driver/usb_mux/it5205.h @@ -9,8 +9,8 @@ #define __CROS_EC_IT5205_H /* I2C interface */ -#define IT5205_I2C_ADDR1 (0x48 << 1) -#define IT5205_I2C_ADDR2 (0x58 << 1) +#define IT5205_I2C_ADDR1__7bf (0x48) +#define IT5205_I2C_ADDR2__7bf (0x58) /* Chip ID registers */ #define IT5205_REG_CHIP_ID3 0x4 diff --git a/driver/usb_mux/pi3usb30532.c b/driver/usb_mux/pi3usb30532.c index 54d6f49fe7..24f9cbd095 100644 --- a/driver/usb_mux/pi3usb30532.c +++ b/driver/usb_mux/pi3usb30532.c @@ -20,7 +20,9 @@ static int pi3usb30532_read(int port, uint8_t reg, uint8_t *val) * Second byte read will be vendor ID. * Third byte read will be selection control. */ - res = i2c_read16(I2C_PORT_USB_MUX, MUX_ADDR(port), 0, &read); + res = i2c_read16__7bf(I2C_PORT_USB_MUX, + MUX_ADDR__7bf(port), + 0, &read); if (res) return res; @@ -37,7 +39,9 @@ static int pi3usb30532_write(int port, uint8_t reg, uint8_t val) if (reg != PI3USB30532_REG_CONTROL) return EC_ERROR_UNKNOWN; - return i2c_write8(I2C_PORT_USB_MUX, MUX_ADDR(port), 0, val); + return i2c_write8__7bf(I2C_PORT_USB_MUX, + MUX_ADDR__7bf(port), + 0, val); } static int pi3usb30532_reset(int port) diff --git a/driver/usb_mux/ps874x.c b/driver/usb_mux/ps874x.c index bf00553d28..73bb39bce5 100644 --- a/driver/usb_mux/ps874x.c +++ b/driver/usb_mux/ps874x.c @@ -13,12 +13,16 @@ static inline int ps874x_read(int port, uint8_t reg, int *val) { - return i2c_read8(I2C_PORT_USB_MUX, MUX_ADDR(port), reg, val); + return i2c_read8__7bf(I2C_PORT_USB_MUX, + MUX_ADDR__7bf(port), + reg, val); } static inline int ps874x_write(int port, uint8_t reg, uint8_t val) { - return i2c_write8(I2C_PORT_USB_MUX, MUX_ADDR(port), reg, val); + return i2c_write8__7bf(I2C_PORT_USB_MUX, + MUX_ADDR__7bf(port), + reg, val); } static int ps874x_init(int port) |