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spi: added an API to get max transaction length and use in spi lcd driver

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This commit is contained in:
Armando
2023-04-24 14:21:13 +08:00
parent ea10aac4f0
commit 0e72940001
3 changed files with 36 additions and 4 deletions
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9
components/esp_lcd/src/esp_lcd_panel_io_spi.c
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@@ -21,7 +21,6 @@
#include "esp_log.h"
#include "esp_check.h"
#include "esp_lcd_common.h"
#include "esp_private/spi_common_internal.h"
static const char *TAG = "lcd_panel.io.spi";
@@ -107,9 +106,13 @@ esp_err_t esp_lcd_new_panel_io_spi(esp_lcd_spi_bus_handle_t bus, const esp_lcd_p
spi_panel_io->base.tx_color = panel_io_spi_tx_color;
spi_panel_io->base.del = panel_io_spi_del;
spi_panel_io->base.register_event_callbacks = panel_io_spi_register_event_callbacks;
spi_panel_io->spi_trans_max_bytes = spi_bus_get_attr((spi_host_device_t)bus)->max_transfer_sz;
size_t max_trans_bytes = 0;
ESP_GOTO_ON_ERROR(spi_bus_get_max_transaction_len((spi_host_device_t)bus, &max_trans_bytes), err, TAG, "get spi max transaction len failed");
spi_panel_io->spi_trans_max_bytes = max_trans_bytes;
*ret_io = &(spi_panel_io->base);
ESP_LOGD(TAG, "new spi lcd panel io @%p", spi_panel_io);
ESP_LOGD(TAG, "new spi lcd panel io @%p, max_trans_bytes: %d", spi_panel_io, (int)max_trans_bytes);
return ESP_OK;