200e8d481f
This creates a common folder in order to share code between similar boards. This is mostly for the CC1352P1 and CC1352P7 launchpad which are very similar but it could be probably useful for some other boards. Signed-off-by: Alexandre Bailon <abailon@baylibre.com>
127 lines
3.8 KiB
C
127 lines
3.8 KiB
C
/*
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* Copyright (c) 2021 Florin Stancu
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*
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* SPDX-License-Identifier: Apache-2.0
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*/
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/*
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* Implements the RF driver callback to configure the on-board antenna
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* switch.
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*/
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#define DT_DRV_COMPAT skyworks_sky13317
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#include <zephyr/init.h>
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#include <zephyr/device.h>
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#include <zephyr/drivers/gpio.h>
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#include <zephyr/drivers/pinctrl.h>
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#include <ti/drivers/rf/RF.h>
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#include <driverlib/rom.h>
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#include <driverlib/interrupt.h>
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/* custom pinctrl states for the antenna mux */
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#define PINCTRL_STATE_ANT_24G 1
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#define PINCTRL_STATE_ANT_24G_PA 2
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#define PINCTRL_STATE_ANT_SUBG 3
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#define PINCTRL_STATE_ANT_SUBG_PA 4
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#define BOARD_ANT_GPIO_24G 0
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#define BOARD_ANT_GPIO_PA 1
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#define BOARD_ANT_GPIO_SUBG 2
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static int board_antenna_init(const struct device *dev);
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static void board_cc13xx_rf_callback(RF_Handle client, RF_GlobalEvent events, void *arg);
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const RFCC26XX_HWAttrsV2 RFCC26XX_hwAttrs = {
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.hwiPriority = INT_PRI_LEVEL7,
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.swiPriority = 0,
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.xoscHfAlwaysNeeded = true,
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/* RF driver callback for custom antenna switching */
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.globalCallback = board_cc13xx_rf_callback,
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/* Subscribe to events */
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.globalEventMask = (RF_GlobalEventRadioSetup | RF_GlobalEventRadioPowerDown),
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};
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PINCTRL_DT_INST_DEFINE(0);
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DEVICE_DT_INST_DEFINE(0, board_antenna_init, NULL, NULL, NULL, POST_KERNEL,
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CONFIG_BOARD_ANTENNA_INIT_PRIO, NULL);
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static const struct pinctrl_dev_config *ant_pcfg = PINCTRL_DT_INST_DEV_CONFIG_GET(0);
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static const struct gpio_dt_spec ant_gpios[] = {
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DT_FOREACH_PROP_ELEM_SEP(DT_NODELABEL(antenna_mux0), gpios, GPIO_DT_SPEC_GET_BY_IDX, (,))};
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/**
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* Antenna switch GPIO init routine.
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*/
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static int board_antenna_init(const struct device *dev)
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{
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ARG_UNUSED(dev);
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int i;
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/* default pinctrl configuration: set all antenna mux control pins as GPIOs */
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_DEFAULT);
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/* set all GPIOs to 0 (all RF paths disabled) */
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for (i = 0; i < ARRAY_SIZE(ant_gpios); i++) {
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gpio_pin_configure_dt(&ant_gpios[i], 0);
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}
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return 0;
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}
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/**
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* Custom TI RFCC26XX callback for switching the on-board antenna mux on radio setup.
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*/
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static void board_cc13xx_rf_callback(RF_Handle client, RF_GlobalEvent events, void *arg)
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{
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bool sub1GHz = false;
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uint8_t loDivider = 0;
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int i;
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/* Clear all antenna switch GPIOs (for all cases). */
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for (i = 0; i < ARRAY_SIZE(ant_gpios); i++) {
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gpio_pin_configure_dt(&ant_gpios[i], 0);
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}
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if (events & RF_GlobalEventRadioSetup) {
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/* Decode the current PA configuration. */
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RF_TxPowerTable_PAType paType =
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(RF_TxPowerTable_PAType)RF_getTxPower(client).paType;
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/* Decode the generic argument as a setup command. */
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RF_RadioSetup *setupCommand = (RF_RadioSetup *)arg;
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switch (setupCommand->common.commandNo) {
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case CMD_RADIO_SETUP:
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case CMD_BLE5_RADIO_SETUP:
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loDivider = RF_LODIVIDER_MASK & setupCommand->common.loDivider;
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break;
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case CMD_PROP_RADIO_DIV_SETUP:
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loDivider = RF_LODIVIDER_MASK & setupCommand->prop_div.loDivider;
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break;
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default:
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break;
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}
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sub1GHz = (loDivider != 0);
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if (sub1GHz) {
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if (paType == RF_TxPowerTable_HighPA) {
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/* Note: RFC_GPO3 is a work-around because the RFC_GPO1 */
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/* is sometimes not de-asserted on CC1352 Rev A. */
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_SUBG_PA);
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} else {
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_SUBG);
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/* Manually set the sub-GHZ antenna switch DIO */
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gpio_pin_configure_dt(&ant_gpios[BOARD_ANT_GPIO_SUBG], 1);
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}
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} else /* 2.4 GHz */ {
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if (paType == RF_TxPowerTable_HighPA) {
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_24G_PA);
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} else {
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_ANT_24G);
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/* Manually set the 2.4GHZ antenna switch DIO */
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gpio_pin_configure_dt(&ant_gpios[BOARD_ANT_GPIO_24G], 1);
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}
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}
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} else {
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pinctrl_apply_state(ant_pcfg, PINCTRL_STATE_DEFAULT);
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}
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}
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