feat(driver_spi): support gpio reserved check

Author: wanckl

components/esp_driver_spi/include/driver/spi_common.h

@@ -97,26 +97,31 @@ typedef spi_common_dma_t spi_dma_chan_t;
  */
 typedef struct {
     union {
-        int mosi_io_num;    ///< GPIO pin for Master Out Slave In (=spi_d) signal, or -1 if not used.
-        int data0_io_num;   ///< GPIO pin for spi data0 signal in quad/octal mode, or -1 if not used.
+        struct {
+            union {
+                int mosi_io_num;    ///< [0] GPIO pin for Master Out Slave In (=spi_d) signal, or -1 if not used.
+                int data0_io_num;   ///< [0] GPIO pin for spi data0 signal in dual/quad/octal mode, or -1 if not used.
+            };
+            union {
+                int miso_io_num;    ///< [1] GPIO pin for Master In Slave Out (=spi_q) signal, or -1 if not used.
+                int data1_io_num;   ///< [1] GPIO pin for spi data1 signal in dual/quad/octal mode, or -1 if not used.
+            };
+            int sclk_io_num;        ///< [2] GPIO pin for SPI Clock signal, or -1 if not used.
+            union {
+                int quadwp_io_num;  ///< [3] GPIO pin for WP (Write Protect) signal, or -1 if not used.
+                int data2_io_num;   ///< [3] GPIO pin for spi data2 signal in quad/octal mode, or -1 if not used.
+            };
+            union {
+                int quadhd_io_num;  ///< [4] GPIO pin for HD (Hold) signal, or -1 if not used.
+                int data3_io_num;   ///< [4] GPIO pin for spi data3 signal in quad/octal mode, or -1 if not used.
+            };
+            int data4_io_num;       ///< [5] GPIO pin for spi data4 signal in octal mode, or -1 if not used.
+            int data5_io_num;       ///< [6] GPIO pin for spi data5 signal in octal mode, or -1 if not used.
+            int data6_io_num;       ///< [7] GPIO pin for spi data6 signal in octal mode, or -1 if not used.
+            int data7_io_num;       ///< [8] GPIO pin for spi data7 signal in octal mode, or -1 if not used.
+        };
+        int iocfg[9];               ///< GPIO config in array format follow the above order.
     };
-    union {
-        int miso_io_num;    ///< GPIO pin for Master In Slave Out (=spi_q) signal, or -1 if not used.
-        int data1_io_num;   ///< GPIO pin for spi data1 signal in quad/octal mode, or -1 if not used.
-    };
-    int sclk_io_num;      ///< GPIO pin for SPI Clock signal, or -1 if not used.
-    union {
-        int quadwp_io_num;  ///< GPIO pin for WP (Write Protect) signal, or -1 if not used.
-        int data2_io_num;   ///< GPIO pin for spi data2 signal in quad/octal mode, or -1 if not used.
-    };
-    union {
-        int quadhd_io_num;  ///< GPIO pin for HD (Hold) signal, or -1 if not used.
-        int data3_io_num;   ///< GPIO pin for spi data3 signal in quad/octal mode, or -1 if not used.
-    };
-    int data4_io_num;     ///< GPIO pin for spi data4 signal in octal mode, or -1 if not used.
-    int data5_io_num;     ///< GPIO pin for spi data5 signal in octal mode, or -1 if not used.
-    int data6_io_num;     ///< GPIO pin for spi data6 signal in octal mode, or -1 if not used.
-    int data7_io_num;     ///< GPIO pin for spi data7 signal in octal mode, or -1 if not used.
     bool data_io_default_level; ///< Output data IO default level when no transaction.
     int max_transfer_sz;  ///< Maximum transfer size, in bytes. Defaults to 4092 if 0 when DMA enabled, or to `SOC_SPI_MAXIMUM_BUFFER_SIZE` if DMA is disabled.
     uint32_t flags;       ///< Abilities of bus to be checked by the driver. Or-ed value of ``SPICOMMON_BUSFLAG_*`` flags.

components/esp_driver_spi/include/esp_private/spi_common_internal.h

@@ -53,6 +53,7 @@ typedef enum {
 /// Attributes of an SPI bus
 typedef struct {
     spi_bus_config_t bus_cfg;           ///< Config used to initialize the bus
+    uint64_t gpio_reserve;              ///< reserved output gpio bit mask
     uint32_t flags;                     ///< Flags (attributes) of the bus
     int max_transfer_sz;                ///< Maximum length of bytes available to send
     bool dma_enabled;                   ///< To enable DMA or not
@@ -156,49 +157,44 @@ esp_err_t spicommon_dma_chan_free(spi_dma_ctx_t *dma_ctx);
  *              - ``SPICOMMON_BUSFLAG_QUAD``: Combination of ``SPICOMMON_BUSFLAG_DUAL`` and ``SPICOMMON_BUSFLAG_WPHD``.
  *              - ``SPICOMMON_BUSFLAG_IO4_IO7``: The bus has spi data4 ~ spi data7 connected.
  *              - ``SPICOMMON_BUSFLAG_OCTAL``: Combination of ``SPICOMMON_BUSFLAG_QUAL`` and ``SPICOMMON_BUSFLAG_IO4_IO7``.
+ * @param[out] io_reserved Output the reserved gpio map
  * @return
  *         - ESP_ERR_INVALID_ARG   if parameter is invalid
  *         - ESP_OK                on success
  */
-esp_err_t spicommon_bus_initialize_io(spi_host_device_t host, const spi_bus_config_t *bus_config, uint32_t flags, uint32_t *flags_o);
+esp_err_t spicommon_bus_initialize_io(spi_host_device_t host, const spi_bus_config_t *bus_config, uint32_t flags, uint32_t *flags_o,  uint64_t *io_reserved);
 
 /**
  * @brief Free the IO used by a SPI peripheral
  *
  * @param bus_cfg Bus config struct which defines which pins to be used.
+ * @param io_reserved Bitmap indicate which pin is reserved
  *
  * @return
  *         - ESP_ERR_INVALID_ARG   if parameter is invalid
  *         - ESP_OK                on success
  */
-esp_err_t spicommon_bus_free_io_cfg(const spi_bus_config_t *bus_cfg);
+esp_err_t spicommon_bus_free_io_cfg(const spi_bus_config_t *bus_cfg, uint64_t *io_reserved);
 
 /**
  * @brief Initialize a Chip Select pin for a specific SPI peripheral
  *
  * @param host SPI peripheral
  * @param cs_io_num GPIO pin to route
- * @param cs_num CS id to route
+ * @param cs_id Hardware CS id to route
  * @param force_gpio_matrix If true, CS will always be routed through the GPIO matrix. If false,
  *                          if the GPIO number allows it, the routing will happen through the IO_mux.
+ * @param[out] io_reserved Output the reserved gpio map
  */
-void spicommon_cs_initialize(spi_host_device_t host, int cs_io_num, int cs_num, int force_gpio_matrix);
+void spicommon_cs_initialize(spi_host_device_t host, int cs_io_num, int cs_id, int force_gpio_matrix, uint64_t *io_reserved);
 
 /**
  * @brief Free a chip select line
  *
  * @param cs_gpio_num CS gpio num to free
+ * @param io_reserved Bitmap indicate which pin is reserved
  */
-void spicommon_cs_free_io(int cs_gpio_num);
-
-/**
- * @brief Check whether all pins used by a host are through IOMUX.
- *
- * @param host SPI peripheral
- *
- * @return false if any pins are through the GPIO matrix, otherwise true.
- */
-bool spicommon_bus_using_iomux(spi_host_device_t host);
+void spicommon_cs_free_io(int cs_gpio_num, uint64_t *io_reserved);
 
 /**
  * @brief Get the IRQ source for a specific SPI host
@@ -298,8 +294,7 @@ const spi_dma_ctx_t* spi_bus_get_dma_ctx(spi_host_device_t host_id);
  * @param arg       The argument to call the destructor
  * @return Always ESP_OK.
  */
-esp_err_t spi_bus_register_destroy_func(spi_host_device_t host_id,
-                                        spi_destroy_func_t f, void *arg);
+esp_err_t spi_bus_register_destroy_func(spi_host_device_t host_id, spi_destroy_func_t f, void *arg);
 
 #ifdef __cplusplus
 }