diff options
Diffstat (limited to 'zephyr/shim/src/usb_muxes.c')
| -rw-r--r-- | zephyr/shim/src/usb_muxes.c | 114 |
1 files changed, 64 insertions, 50 deletions
diff --git a/zephyr/shim/src/usb_muxes.c b/zephyr/shim/src/usb_muxes.c index f96146258a..3f81e97787 100644 --- a/zephyr/shim/src/usb_muxes.c +++ b/zephyr/shim/src/usb_muxes.c @@ -1,4 +1,4 @@ -/* Copyright 2022 The Chromium OS Authors. All rights reserved. +/* Copyright 2022 The ChromiumOS Authors * Use of this source code is governed by a BSD-style license that can be * found in the LICENSE file. */ @@ -9,45 +9,83 @@ #include "usbc/usb_muxes.h" /** - * @brief Macro that can be used in USB_MUX_FOREACH_USBC_PORT as filter - * argument. It allows to evaluate to "1 ||" for each named USBC port - * that has usb-muxes property. + * This prevents creating struct usb_mux usb_muxes[] for platforms that didn't + * migrate USB mux configuration to DTS yet. */ -#define USB_MUX_PORT_HAS_MUX(unused1, unused2) 1 || +#if DT_HAS_COMPAT_STATUS_OKAY(cros_ec_usb_mux_chain) /** - * Check if there is any named USBC port with usb-muxes property. It evaluates - * to "1 || 1 || ... 1 || 0" when there are multiple named USBC ports with - * usb-muxes property and to "0" when any named USBC port has usb-muxes - * property. + * @brief Check if @p mux_id is not part of @p chain_id or if @p chain_id USBC + * port is the same as @p mux_port. Result ends with && to construct + * logical expression using FOREACH macro. * - * This prevents creating struct usb_mux usb_muxes[] for platforms that didn't - * migrate USB mux configuration to DTS yet. + * @param chain_id Chain DTS node ID + * @param mux_id USB mux node ID + * @param mux_port Port which should be associated with @p mux_id */ -#if USB_MUX_FOREACH_USBC_PORT(USB_MUX_PORT_HAS_MUX, _) 0 +#define USB_MUX_NOT_IN_CHAIN_OR_PORT_EQ(chain_id, mux_id, mux_port) \ + ((USB_MUX_FIND_PORT(chain_id, mux_id)(-1)) == -1 || \ + USBC_PORT(chain_id) == mux_port) && + +/** + * @brief Check if all chains that contains @p mux_id have the same USB-C port + * + * @param mux_id USB mux node ID + * @param unused_conf Unused argument required by USB_MUX_FOREACH_MUX() + */ +#define USB_MUX_CHECK_ALL_PORTS_ARE_SAME(mux_id, unused_conf) \ + BUILD_ASSERT( \ + USB_MUX_FOREACH_CHAIN_VARGS(USB_MUX_NOT_IN_CHAIN_OR_PORT_EQ, \ + mux_id, USB_MUX_PORT(mux_id)) 1, \ + "USB mux " #mux_id " is in chains for different ports"); + +/** Check if for every mux, chains where mux is present have the same port */ +USB_MUX_FOREACH_MUX(USB_MUX_CHECK_ALL_PORTS_ARE_SAME) + +/** + * Declare all usb_mux_chain structures e.g. + * MAYBE_CONST struct usb_mux_chain + * USB_MUX_chain_port_<port_id>_mux_<position_id>; + */ +USB_MUX_FOREACH_CHAIN_VARGS(USB_MUX_FOREACH_NO_ROOT_MUX, + USB_MUX_CHAIN_STRUCT_DECLARE_OP) + +/** + * Define usb_mux_chain structures for main chain e.g. + * + * MAYBE_CONST struct usb_mux_chain + * USB_MUX_chain_port_<port_id>_mux_<position_id> = { + * .mux = &USB_MUX_NODE_DT_N_S_usbc_S_port0_0_S_virtual_mux_0, + * .next = &USB_MUX_chain_port_0_mux_1, + * } + */ +USB_MUX_FOREACH_CHAIN_VARGS(USB_MUX_FOR_MAIN_CHAIN, USB_MUX_FOREACH_NO_ROOT_MUX, + USB_MUX_CHAIN_STRUCT_DEFINE_OP) + +/** + * Forward declarations for board_init and board_set callbacks. e.g. + * int c0_mux0_board_init(const struct usb_mux *); + * int c1_mux0_board_set(const struct usb_mux *, mux_state_t); + */ +USB_MUX_FOREACH_MUX(USB_MUX_CB_BOARD_INIT_DECLARE_IF_EXISTS) +USB_MUX_FOREACH_MUX(USB_MUX_CB_BOARD_SET_DECLARE_IF_EXISTS) /** * Define root of each USB muxes chain e.g. * [0] = { - * .usb_port = 0, - * .next_mux = &USB_MUX_NODE_DT_N_S_usbc_S_port0_0_S_it5205_mux_0, - * .board_init = &board_init, - * .board_set = NULL, - * .flags = 0, - * .driver = &virtual_usb_mux_driver, - * .hpd_update = &virtual_hpd_update, + * .mux = &USB_MUX_NODE_DT_N_S_usbc_S_port0_0_S_virtual_mux_0, + * .next = &USB_MUX_chain_port_0_mux_1, * }, * [1] = { ... }, */ -MAYBE_CONST struct usb_mux usb_muxes[] = { - USB_MUX_FOREACH_USBC_PORT(USB_MUX_FIRST, USB_MUX_ARRAY) -}; +MAYBE_CONST struct usb_mux_chain usb_muxes[] = { USB_MUX_FOREACH_CHAIN_VARGS( + USB_MUX_FOR_MAIN_CHAIN, USB_MUX_DEFINE_ROOT_MUX) }; +BUILD_ASSERT(ARRAY_SIZE(usb_muxes) == CONFIG_USB_PD_PORT_MAX_COUNT); /** - * Define all USB muxes except roots e.g. + * Define all USB muxes e.g. * MAYBE_CONST struct usb_mux USB_MUX_NODE_DT_N_S_usbc_S_port0_0_S_mux_0 = { * .usb_port = 0, - * .next_mux = NULL, * .board_init = NULL, * .board_set = NULL, * .flags = 0, @@ -56,30 +94,6 @@ MAYBE_CONST struct usb_mux usb_muxes[] = { * }; * MAYBE_CONST struct usb_mux USB_MUX_NODE_<node_id> = { ... }; */ -USB_MUX_FOREACH_USBC_PORT(USB_MUX_NO_FIRST, USB_MUX_DEFINE) - -/* Create bb_controls only if BB retimer driver is enabled */ -#ifdef CONFIG_PLATFORM_EC_USBC_RETIMER_INTEL_BB -/** - * @brief bb_controls array should be constant only if configuration cannot - * change in runtime - */ -#define BB_CONTROLS_CONST \ - COND_CODE_1( \ - CONFIG_PLATFORM_EC_USBC_RETIMER_INTEL_BB_RUNTIME_CONFIG,\ - (), (const)) - -/** - * Define bb_controls for BB retimers in USB muxes chain e.g. - * [0] = { - * .retimer_rst_gpio = IOEX_USB_C0_BB_RETIMER_RST, - * .usb_ls_en_gpio = IOEX_USB_C0_BB_RETIMER_LS_EN, - * }, - * [1] = { ... }, - */ -BB_CONTROLS_CONST struct bb_usb_control bb_controls[] = { - USB_MUX_FOREACH_USBC_PORT(USB_MUX_BB_RETIMERS, USB_MUX_ARRAY) -}; -#endif /* CONFIG_PLATFORM_EC_USBC_RETIMER_INTEL_BB */ +USB_MUX_FOREACH_MUX(USB_MUX_DEFINE) -#endif /* #if USB_MUX_FOREACH_USBC_PORT(USB_MUX_PORT_HAS_MUX, _) */ +#endif /* #if DT_HAS_COMPAT_STATUS_OKAY(cros_ec_usb_mux_chain) */ |