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lcd: support I2S1 LCD mode on esp32

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This commit is contained in:
morris
2022-03-03 15:35:43 +08:00
parent f35edeb5a3
commit 9422fe077a
14 changed files with 85 additions and 52 deletions
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19
components/esp_lcd/src/esp_lcd_panel_io_i2s.c
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@@ -57,7 +57,7 @@ static esp_err_t i2s_lcd_init_dma_link(esp_lcd_i80_bus_handle_t bus);
static esp_err_t i2s_lcd_configure_gpio(esp_lcd_i80_bus_handle_t bus, const esp_lcd_i80_bus_config_t *bus_config);
static void i2s_lcd_trigger_quick_trans_done_event(esp_lcd_i80_bus_handle_t bus);
static void lcd_i80_switch_devices(lcd_panel_io_i80_t *cur_device, lcd_panel_io_i80_t *next_device);
static IRAM_ATTR void lcd_default_isr_handler(void *args);
static void lcd_default_isr_handler(void *args);
struct esp_lcd_i80_bus_t {
int bus_id; // Bus ID, index from 0
@@ -149,9 +149,16 @@ esp_err_t esp_lcd_new_i80_bus(const esp_lcd_i80_bus_config_t *bus_config, esp_lc
bus->format_buffer = heap_caps_calloc(1, CONFIG_LCD_PANEL_IO_FORMAT_BUF_SIZE, MALLOC_CAP_INTERNAL | MALLOC_CAP_DMA);
#endif // SOC_I2S_TRANS_SIZE_ALIGN_WORD
ESP_GOTO_ON_FALSE(bus->format_buffer, ESP_ERR_NO_MEM, err, TAG, "no mem for format buffer");
// I2S0 has the LCD mode, but the LCD mode can't work with other modes at the same time, we need to register the driver object to the I2S platform
ESP_GOTO_ON_ERROR(i2s_priv_register_object(bus, 0), err, TAG, "register to I2S platform failed");
bus->bus_id = 0;
// LCD mode can't work with other modes at the same time, we need to register the driver object to the I2S platform
int bus_id = -1;
for (int i = 0; i < SOC_LCD_I80_BUSES; i++) {
if (i2s_priv_register_object(bus, i) == ESP_OK) {
bus_id = i;
break;
}
}
ESP_GOTO_ON_FALSE(bus_id != -1, ESP_ERR_NOT_FOUND, err, TAG, "no free i80 bus slot");
bus->bus_id = bus_id;
// initialize HAL layer
i2s_hal_init(&bus->hal, bus->bus_id);
// set peripheral clock resolution
@@ -163,7 +170,7 @@ esp_err_t esp_lcd_new_i80_bus(const esp_lcd_i80_bus_config_t *bus_config, esp_lc
i2s_ll_tx_reset_fifo(bus->hal.dev);
// install interrupt service, (I2S LCD mode only uses the "TX Unit", which leaves "RX Unit" for other purpose)
// So the interrupt should also be able to share with other functionality
int isr_flags = ESP_INTR_FLAG_INTRDISABLED | ESP_INTR_FLAG_SHARED;
int isr_flags = LCD_I80_INTR_ALLOC_FLAGS | ESP_INTR_FLAG_SHARED;
ret = esp_intr_alloc_intrstatus(lcd_periph_signals.buses[bus->bus_id].irq_id, isr_flags,
(uint32_t)i2s_ll_get_intr_status_reg(bus->hal.dev),
I2S_LL_EVENT_TX_EOF, lcd_default_isr_handler, bus, &bus->intr);
@@ -257,7 +264,7 @@ esp_err_t esp_lcd_new_panel_io_i80(esp_lcd_i80_bus_handle_t bus, const esp_lcd_p
uint32_t pclk_prescale = bus->resolution_hz / 2 / io_config->pclk_hz;
ESP_GOTO_ON_FALSE(pclk_prescale > 0 && pclk_prescale <= I2S_LL_BCK_MAX_PRESCALE, ESP_ERR_NOT_SUPPORTED, err, TAG,
"prescaler can't satisfy PCLK clock %u", io_config->pclk_hz);
i80_device = calloc(1, sizeof(lcd_panel_io_i80_t) + io_config->trans_queue_depth * sizeof(lcd_i80_trans_descriptor_t));
i80_device = heap_caps_calloc(1, sizeof(lcd_panel_io_i80_t) + io_config->trans_queue_depth * sizeof(lcd_i80_trans_descriptor_t), LCD_I80_MEM_ALLOC_CAPS);
ESP_GOTO_ON_FALSE(i80_device, ESP_ERR_NO_MEM, err, TAG, "no mem for i80 panel io");
// create two queues for i80 device
i80_device->trans_queue = xQueueCreate(io_config->trans_queue_depth, sizeof(lcd_i80_trans_descriptor_t *));