diff options
Diffstat (limited to 'driver/usb_mux/amd_fp5.c')
| -rw-r--r-- | driver/usb_mux/amd_fp5.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/driver/usb_mux/amd_fp5.c b/driver/usb_mux/amd_fp5.c deleted file mode 100644 index b77edf2826..0000000000 --- a/driver/usb_mux/amd_fp5.c +++ /dev/null @@ -1,162 +0,0 @@ -/* Copyright 2019 The Chromium OS Authors. All rights reserved. - * Use of this source code is governed by a BSD-style license that can be - * found in the LICENSE file. - * - * AMD FP5 USB/DP Mux. - */ - -#include "amd_fp5.h" -#include "chipset.h" -#include "common.h" -#include "hooks.h" -#include "i2c.h" -#include "queue.h" -#include "timer.h" -#include "usb_mux.h" - -static mux_state_t saved_mux_state[CONFIG_USB_PD_PORT_MAX_COUNT]; - -static inline int amd_fp5_mux_read(const struct usb_mux *me, uint8_t *val) -{ - uint8_t buf[3] = { 0 }; - int rv; - - rv = i2c_xfer(me->i2c_port, me->i2c_addr_flags, - NULL, 0, buf, 3); - if (rv) - return rv; - - *val = buf[me->usb_port + 1]; - - return EC_SUCCESS; -} - -static inline int amd_fp5_mux_write(const struct usb_mux *me, uint8_t val) -{ - return i2c_write8(me->i2c_port, me->i2c_addr_flags, - me->usb_port, val); -} - -static int amd_fp5_init(const struct usb_mux *me) -{ - return EC_SUCCESS; -} - -static int amd_fp5_set_mux(const struct usb_mux *me, mux_state_t mux_state, - bool *ack_required) -{ - uint8_t val = 0; - - /* This driver does not use host command ACKs */ - *ack_required = false; - - saved_mux_state[me->usb_port] = mux_state; - - /* - * This MUX is on the FP5 SoC. If that device is not powered then - * we either have to complain that it is not powered or if we were - * setting the state to OFF, then go ahead and report that we did - * it because a powered down MUX is off. - */ - if (chipset_in_state(CHIPSET_STATE_HARD_OFF)) - return (mux_state == USB_PD_MUX_NONE) - ? EC_SUCCESS - : EC_ERROR_NOT_POWERED; - - if ((mux_state & USB_PD_MUX_USB_ENABLED) && - (mux_state & USB_PD_MUX_DP_ENABLED)) - val = (mux_state & USB_PD_MUX_POLARITY_INVERTED) - ? AMD_FP5_MUX_DOCK_INVERTED : AMD_FP5_MUX_DOCK; - else if (mux_state & USB_PD_MUX_USB_ENABLED) - val = (mux_state & USB_PD_MUX_POLARITY_INVERTED) - ? AMD_FP5_MUX_USB_INVERTED : AMD_FP5_MUX_USB; - else if (mux_state & USB_PD_MUX_DP_ENABLED) - val = (mux_state & USB_PD_MUX_POLARITY_INVERTED) - ? AMD_FP5_MUX_DP_INVERTED : AMD_FP5_MUX_DP; - - return amd_fp5_mux_write(me, val); -} - -static int amd_fp5_get_mux(const struct usb_mux *me, mux_state_t *mux_state) -{ - uint8_t val = AMD_FP5_MUX_SAFE; - - /* - * This MUX is on the FP5 SoC. Only access the device if we - * have power. If that device is not powered then claim the - * state to be NONE, which is SAFE. - */ - if (!chipset_in_state(CHIPSET_STATE_HARD_OFF)) { - int rv; - - rv = amd_fp5_mux_read(me, &val); - if (rv) - return rv; - } - - switch (val) { - case AMD_FP5_MUX_USB: - *mux_state = USB_PD_MUX_USB_ENABLED; - break; - case AMD_FP5_MUX_USB_INVERTED: - *mux_state = USB_PD_MUX_USB_ENABLED | - USB_PD_MUX_POLARITY_INVERTED; - break; - case AMD_FP5_MUX_DOCK: - *mux_state = USB_PD_MUX_USB_ENABLED | USB_PD_MUX_DP_ENABLED; - break; - case AMD_FP5_MUX_DOCK_INVERTED: - *mux_state = USB_PD_MUX_USB_ENABLED | USB_PD_MUX_DP_ENABLED - | USB_PD_MUX_POLARITY_INVERTED; - break; - case AMD_FP5_MUX_DP: - *mux_state = USB_PD_MUX_DP_ENABLED; - break; - case AMD_FP5_MUX_DP_INVERTED: - *mux_state = USB_PD_MUX_DP_ENABLED | - USB_PD_MUX_POLARITY_INVERTED; - break; - case AMD_FP5_MUX_SAFE: - default: - *mux_state = USB_PD_MUX_NONE; - break; - } - - return EC_SUCCESS; -} - -static struct queue const chipset_reset_queue - = QUEUE_NULL(CONFIG_USB_PD_PORT_MAX_COUNT, struct usb_mux *); - -static void amd_fp5_chipset_reset_delay(void) -{ - struct usb_mux *me; - int rv; - bool unused; - - while (queue_remove_unit(&chipset_reset_queue, &me)) { - rv = amd_fp5_set_mux(me, saved_mux_state[me->usb_port], - &unused); - if (rv) - ccprints("C%d restore mux rv:%d", me->usb_port, rv); - } -} -DECLARE_DEFERRED(amd_fp5_chipset_reset_delay); - -/* - * The AP's internal USB-C mux is reset when AP resets, so wait for - * it to be ready and then restore the previous setting. - */ -static int amd_fp5_chipset_reset(const struct usb_mux *me) -{ - queue_add_unit(&chipset_reset_queue, &me); - hook_call_deferred(&amd_fp5_chipset_reset_delay_data, 200 * MSEC); - return EC_SUCCESS; -} - -const struct usb_mux_driver amd_fp5_usb_mux_driver = { - .init = &amd_fp5_init, - .set = &amd_fp5_set_mux, - .get = &amd_fp5_get_mux, - .chipset_reset = &amd_fp5_chipset_reset, -}; |