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drivers: hci: stm32wb: Refactor c2_reset()

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In preparation of the introduction of dt configured clock in this
driver, refactor clock related clocks.
- remove start_ble_rf()
- Move  IPCC clock activation in c2_reset()

Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>
This commit is contained in:
Erwan Gouriou 2022-12-14 16:56:58 +01:00 • committed by Carles Cufí
commit f3e788e84e
1 changed files with 16 additions and 21 deletions
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37
drivers/bluetooth/hci/ipm_stm32wb.c
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@ -272,9 +272,6 @@ void shci_cmd_resp_wait(uint32_t timeout)
void ipcc_reset(void)
{
/* Reset IPCC */
LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_IPCC);
LL_C1_IPCC_ClearFlag_CHx(
IPCC,
LL_IPCC_CHANNEL_1 | LL_IPCC_CHANNEL_2 | LL_IPCC_CHANNEL_3 |
@ -385,23 +382,6 @@ static int bt_ipm_send(struct net_buf *buf)
return 0;
}
static void start_ble_rf(void)
{
/* Select wakeup source of BLE RF */
LL_RCC_SetRFWKPClockSource(LL_RCC_RFWKP_CLKSOURCE_LSE);
/* HSI48 clock and CLK48 clock source are enabled using the device tree */
#if !STM32_HSI48_ENABLED
/* Deprecated: enable HSI48 using device tree */
#warning Bluetooth IPM requires HSI48 clock to be enabled using device tree
/* Keeping this sequence for legacy: */
LL_RCC_HSI48_Enable();
while (!LL_RCC_HSI48_IsReady()) {
}
#endif /* !STM32_HSI48_ENABLED */
}
#ifdef CONFIG_BT_HCI_HOST
bt_addr_t *bt_get_ble_addr(void)
{
@ -502,7 +482,22 @@ static int bt_ipm_ble_init(void)
static int c2_reset(void)
{
start_ble_rf();
/* Select wakeup source of BLE RF */
LL_RCC_SetRFWKPClockSource(LL_RCC_RFWKP_CLKSOURCE_LSE);
/* HSI48 clock and CLK48 clock source are enabled using the device tree */
#if !STM32_HSI48_ENABLED
/* Deprecated: enable HSI48 using device tree */
#warning Bluetooth IPM requires HSI48 clock to be enabled using device tree
/* Keeping this sequence for legacy: */
LL_RCC_HSI48_Enable();
while (!LL_RCC_HSI48_IsReady()) {
}
#endif /* !STM32_HSI48_ENABLED */
/* Reset IPCC */
LL_AHB3_GRP1_EnableClock(LL_AHB3_GRP1_PERIPH_IPCC);
/* Take BLE out of reset */
ipcc_reset();