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spi_slave: fix slave can't use iomux bus mixed with gpio cs_pin

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This commit is contained in:
wanlei
2022-11-28 10:22:25 +08:00
parent 9ff6e4492e
commit e08bbd311f
1 changed files with 8 additions and 3 deletions
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11
components/driver/spi_slave.c
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@@ -64,6 +64,7 @@ typedef struct {
QueueHandle_t trans_queue;
QueueHandle_t ret_queue;
int dma_chan;
bool cs_iomux;
#ifdef CONFIG_PM_ENABLE
esp_pm_lock_handle_t pm_lock;
#endif
@@ -97,7 +98,7 @@ static void SPI_SLAVE_ISR_ATTR freeze_cs(spi_slave_t *host)
// This is used in test by internal gpio matrix connections
static inline void SPI_SLAVE_ISR_ATTR restore_cs(spi_slave_t *host)
{
if (bus_is_iomux(host)) {
if (host->cs_iomux) {
gpio_iomux_in(host->cfg.spics_io_num, spi_periph_signal[host->id].spics_in);
} else {
gpio_matrix_in(host->cfg.spics_io_num, spi_periph_signal[host->id].spics_in, false);
@@ -147,7 +148,12 @@ esp_err_t spi_slave_initialize(spi_host_device_t host, const spi_bus_config_t *b
ret = err;
goto cleanup;
}
spicommon_cs_initialize(host, slave_config->spics_io_num, 0, !bus_is_iomux(spihost[host]));
if (slave_config->spics_io_num >= 0) {
spicommon_cs_initialize(host, slave_config->spics_io_num, 0, !bus_is_iomux(spihost[host]));
// check and save where cs line really route through
spihost[host]->cs_iomux = (slave_config->spics_io_num == spi_periph_signal[host].spics0_iomux_pin) && bus_is_iomux(spihost[host]);
}
// The slave DMA suffers from unexpected transactions. Forbid reading if DMA is enabled by disabling the CS line.
if (use_dma) freeze_cs(spihost[host]);
@@ -404,4 +410,3 @@ static void SPI_SLAVE_ISR_ATTR spi_intr(void *arg)
}
if (do_yield) portYIELD_FROM_ISR();
}