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| author | Ting Shen <phoenixshen@google.com> | 2020-09-09 19:16:40 +0800 |
|---|---|---|
| committer | Commit Bot <commit-bot@chromium.org> | 2020-09-15 08:26:53 +0000 |
| commit | a4fcebc675bea0f5d3911f03947ab940eb70020d (patch) | |
| tree | 592014ce8dbb55440d56afa416133fb7dad58946 /driver/usb_mux/it5205.c | |
| parent | 64013cb81d3f27908cfbca0d814008f32f7dae54 (diff) | |
| download | chrome-ec-a4fcebc675bea0f5d3911f03947ab940eb70020d.tar.gz | |
usb_mux/it5205h: implement SBU control
BUG=b:167499422
TEST=able to trigger sbu interrupt on reworked asurada
BRANCH=none
Signed-off-by: Ting Shen <phoenixshen@google.com>
Change-Id: I457596ee938790736ebdd5bfbd22e13831d715b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/platform/ec/+/2402598
Reviewed-by: Eric Yilun Lin <yllin@chromium.org>
Commit-Queue: Ting Shen <phoenixshen@chromium.org>
Tested-by: Ting Shen <phoenixshen@chromium.org>
Diffstat (limited to 'driver/usb_mux/it5205.c')
| -rw-r--r-- | driver/usb_mux/it5205.c | 37 |
1 files changed, 35 insertions, 2 deletions
diff --git a/driver/usb_mux/it5205.c b/driver/usb_mux/it5205.c index 95416547cd..f275568313 100644 --- a/driver/usb_mux/it5205.c +++ b/driver/usb_mux/it5205.c @@ -6,10 +6,8 @@ */ #include "common.h" -#include "console.h" #include "i2c.h" #include "it5205.h" -#include "usb_mux.h" #include "util.h" #define MUX_STATE_DP_USB_MASK (USB_PD_MUX_USB_ENABLED | USB_PD_MUX_DP_ENABLED) @@ -24,6 +22,20 @@ static int it5205_write(const struct usb_mux *me, uint8_t reg, uint8_t val) return i2c_write8(me->i2c_port, me->i2c_addr_flags, reg, val); } +static int it5205h_sbu_update(const struct usb_mux *me, uint8_t reg, + uint8_t mask, enum mask_update_action action) +{ + return i2c_update8(me->i2c_port, IT5205H_SBU_I2C_ADDR_FLAGS, + reg, mask, action); +} + +static int it5205h_sbu_field_update(const struct usb_mux *me, uint8_t reg, + uint8_t field_mask, uint8_t set_value) +{ + return i2c_field_update8(me->i2c_port, IT5205H_SBU_I2C_ADDR_FLAGS, + reg, field_mask, set_value); +} + struct mux_chip_id_t { uint8_t chip_id; uint8_t reg; @@ -54,9 +66,30 @@ static int it5205_init(const struct usb_mux *me) return EC_ERROR_UNKNOWN; } + if (IS_ENABLED(CONFIG_USB_MUX_IT5205H_SBU_OVP)) { + RETURN_ERROR(it5205h_sbu_field_update(me, IT5205H_REG_VSR, + IT5205H_VREF_SELECT_MASK, + IT5205H_VREF_SELECT_3_3V)); + + RETURN_ERROR(it5205h_sbu_field_update(me, IT5205H_REG_CSBUOVPSR, + IT5205H_OVP_SELECT_MASK, + IT5205H_OVP_3_68V)); + + RETURN_ERROR(it5205h_sbu_update(me, IT5205H_REG_ISR, + IT5205H_ISR_CSBU_MASK, MASK_CLR)); + + RETURN_ERROR(it5205h_enable_csbu_switch(me, true)); + } + return EC_SUCCESS; } +enum ec_error_list it5205h_enable_csbu_switch(const struct usb_mux *me, bool en) +{ + return it5205h_sbu_update(me, IT5205H_REG_CSBUSR, + IT5205H_CSBUSR_SWITCH, en ? MASK_SET : MASK_CLR); +} + /* Writes control register to set switch mode */ static int it5205_set_mux(const struct usb_mux *me, mux_state_t mux_state) { |