diff --git a/components/drivers/include/drivers/spi.h b/components/drivers/include/drivers/spi.h index 84b589ace0f0efa91df34f7902bf28d398bf6224..7394710581aebcbf7c5829d1b7cf213e1903eeb3 100644 --- a/components/drivers/include/drivers/spi.h +++ b/components/drivers/include/drivers/spi.h @@ -45,6 +45,9 @@ extern "C"{ #define RT_SPI_MODE_MASK (RT_SPI_CPHA | RT_SPI_CPOL | RT_SPI_MSB) +#define RT_SPI_BUS_MODE_SPI (1<<0) +#define RT_SPI_BUS_MODE_QSPI (1<<1) + #define RT_SPI_CS_HIGH (1<<4) /* Chipselect active high */ #define RT_SPI_NO_CS (1<<5) /* No chipselect */ #define RT_SPI_3WIRE (1<<6) /* SI/SO pin shared */ @@ -80,6 +83,7 @@ struct rt_spi_ops; struct rt_spi_bus { struct rt_device parent; + rt_uint8_t mode; const struct rt_spi_ops *ops; struct rt_mutex lock; @@ -106,6 +110,55 @@ struct rt_spi_device struct rt_spi_configuration config; void *user_data; }; + +struct rt_qspi_message +{ + struct rt_spi_message parent; + + /* instruction stage */ + struct + { + rt_uint8_t content; + rt_uint8_t qspi_lines; + } instruction; + + /* address and alternate_bytes stage */ + struct + { + rt_uint32_t content; + rt_uint8_t size; + rt_uint8_t qspi_lines; + } address, alternate_bytes; + + /* dummy_cycles stage */ + rt_uint32_t dummy_cycles; + + /* number of lines in qspi data stage, the other configuration items are in parent */ + rt_uint8_t qspi_data_lines; +}; + +struct rt_qspi_configuration +{ + struct rt_spi_configuration parent; + /* The size of medium */ + rt_uint32_t medium_size; + /* double data rate mode */ + rt_uint8_t ddr_mode; + /* the number of lines connected to the hardware */ + rt_uint8_t qspi_hw_lines; +}; + +struct rt_qspi_device +{ + struct rt_spi_device parent; + + struct rt_qspi_configuration config; + + void (*enter_qspi_mode)(struct rt_qspi_device *device); + + void (*exit_qspi_mode)(struct rt_qspi_device *device); +}; + #define SPI_DEVICE(dev) ((struct rt_spi_device *)(dev)) /* register a SPI bus */ @@ -255,6 +308,61 @@ rt_inline void rt_spi_message_append(struct rt_spi_message *list, message->next = RT_NULL; } +/** + * This function can set configuration on QSPI device. + * + * @param device the QSPI device attached to QSPI bus. + * @param cfg the configuration pointer. + * + * @return the actual length of transmitted. + */ +rt_err_t rt_qspi_configure(struct rt_qspi_device *device, struct rt_qspi_configuration *cfg); + +/** + * This function can register a SPI bus for QSPI mode. + * + * @param bus the SPI bus for QSPI mode. + * @param name The name of the spi bus. + * @param ops the SPI bus instance to be registered. + * + * @return the actual length of transmitted. + */ +rt_err_t rt_qspi_bus_register(struct rt_spi_bus *bus, const char *name, const struct rt_spi_ops *ops); + +/** + * This function transmits data to QSPI device. + * + * @param device the QSPI device attached to QSPI bus. + * @param message the message pointer. + * + * @return the actual length of transmitted. + */ +rt_size_t rt_qspi_transfer_message(struct rt_qspi_device *device, struct rt_qspi_message *message); + +/** + * This function can send data then receive data from QSPI device + * + * @param device the QSPI device attached to QSPI bus. + * @param send_buf the buffer to be transmitted to QSPI device. + * @param send_length the number of data to be transmitted. + * @param recv_buf the buffer to be recivied from QSPI device. + * @param recv_length the data to be recivied. + * + * @return the status of transmit. + */ +rt_err_t rt_qspi_send_then_recv(struct rt_qspi_device *device, const void *send_buf, rt_size_t send_length,void *recv_buf, rt_size_t recv_length); + +/** + * This function can send data to QSPI device + * + * @param device the QSPI device attached to QSPI bus. + * @param send_buf the buffer to be transmitted to QSPI device. + * @param send_length the number of data to be transmitted. + * + * @return the status of transmit. + */ +rt_err_t rt_qspi_send(struct rt_qspi_device *device, const void *send_buf, rt_size_t length); + #ifdef __cplusplus } #endif diff --git a/components/drivers/spi/qspi_core.c b/components/drivers/spi/qspi_core.c new file mode 100644 index 0000000000000000000000000000000000000000..7676764b59465b92e854d09fe878d67d3600725c --- /dev/null +++ b/components/drivers/spi/qspi_core.c @@ -0,0 +1,265 @@ +/* + * Copyright (c) 2006-2018, RT-Thread Development Team + * + * SPDX-License-Identifier: Apache-2.0 + * + * Change Logs: + * Date Author Notes + * 2018-11-16 zylx first version. + */ + +#include + +rt_err_t rt_qspi_configure(struct rt_qspi_device *device, struct rt_qspi_configuration *cfg) +{ + RT_ASSERT(device != RT_NULL); + RT_ASSERT(cfg != RT_NULL); + + struct rt_qspi_device *qspi_device = (struct rt_qspi_device *)device; + rt_err_t result = RT_EOK; + + /* copy configuration items */ + qspi_device->config.parent.mode = cfg->parent.mode; + qspi_device->config.parent.max_hz = cfg->parent.max_hz; + qspi_device->config.parent.data_width = cfg->parent.data_width; + qspi_device->config.parent.reserved = cfg->parent.reserved; + qspi_device->config.medium_size = cfg->medium_size; + qspi_device->config.ddr_mode = cfg->ddr_mode; + qspi_device->config.qspi_hw_lines = cfg->qspi_hw_lines; + + result = rt_spi_configure(&device->parent, &cfg->parent); + + return result; +} + +rt_err_t rt_qspi_bus_register(struct rt_spi_bus *bus, const char *name, const struct rt_spi_ops *ops) +{ + rt_err_t result = RT_EOK; + + result = rt_spi_bus_register(bus, name, ops); + if(result == RT_EOK) + { + /* set SPI bus to qspi modes */ + bus->mode = RT_SPI_BUS_MODE_QSPI; + } + + return result; +} + +rt_size_t rt_qspi_transfer_message(struct rt_qspi_device *device, struct rt_qspi_message *message) +{ + rt_err_t result; + + RT_ASSERT(device != RT_NULL); + RT_ASSERT(message != RT_NULL); + + result = rt_mutex_take(&(device->parent.bus->lock), RT_WAITING_FOREVER); + if (result != RT_EOK) + { + rt_set_errno(-RT_EBUSY); + + return 0; + } + + /* reset errno */ + rt_set_errno(RT_EOK); + + /* configure SPI bus */ + if (device->parent.bus->owner != &device->parent) + { + /* not the same owner as current, re-configure SPI bus */ + result = device->parent.bus->ops->configure(&device->parent, &device->parent.config); + if (result == RT_EOK) + { + /* set SPI bus owner */ + device->parent.bus->owner = &device->parent; + } + else + { + /* configure SPI bus failed */ + rt_set_errno(-RT_EIO); + goto __exit; + } + } + + /* transmit each SPI message */ + + result = device->parent.bus->ops->xfer(&device->parent, &message->parent); + if (result == 0) + { + rt_set_errno(-RT_EIO); + } + +__exit: + /* release bus lock */ + rt_mutex_release(&(device->parent.bus->lock)); + + return result; +} + +rt_err_t rt_qspi_send_then_recv(struct rt_qspi_device *device, const void *send_buf, rt_size_t send_length, void *recv_buf, rt_size_t recv_length) +{ + RT_ASSERT(send_buf); + RT_ASSERT(recv_buf); + RT_ASSERT(send_length != 0); + + struct rt_qspi_message message; + unsigned char *ptr = (unsigned char *)send_buf; + rt_size_t count = 0; + rt_err_t result = 0; + + message.instruction.content = ptr[0]; + message.instruction.qspi_lines = 1; + count++; + + /* get address */ + if (send_length > 1) + { + if (device->config.medium_size > 0x1000000 && send_length >= 5) + { + /* medium size greater than 16Mb, address size is 4 Byte */ + message.address.content = (ptr[1] << 24) | (ptr[2] << 16) | (ptr[3] << 8) | (ptr[4]); + message.address.size = 32; + count += 4; + } + else if (send_length >= 4) + { + /* address size is 3 Byte */ + message.address.content = (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]); + message.address.size = 24; + count += 3; + } + else + { + return -RT_ERROR; + } + message.address.qspi_lines = 1; + } + else + { + /* no address stage */ + message.address.content = 0 ; + message.address.qspi_lines = 0; + message.address.size = 0; + } + + message.alternate_bytes.content = 0; + message.alternate_bytes.size = 0; + message.alternate_bytes.qspi_lines = 0; + + /* set dummy cycles */ + if (count != send_length) + { + message.dummy_cycles = (send_length - count) * 8; + + } + else + { + message.dummy_cycles = 0; + } + + /* set recv buf and recv size */ + message.parent.recv_buf = recv_buf; + message.parent.send_buf = RT_NULL; + message.parent.length = recv_length; + message.parent.cs_take = 1; + message.parent.cs_release = 1; + + message.qspi_data_lines = 1; + + result = rt_qspi_transfer_message(device, &message); + if (result == 0) + { + result = -RT_EIO; + } + else + { + result = recv_length; + } + + return result; +} + +rt_err_t rt_qspi_send(struct rt_qspi_device *device, const void *send_buf, rt_size_t length) +{ + RT_ASSERT(send_buf); + RT_ASSERT(length != 0); + + struct rt_qspi_message message; + char *ptr = (char *)send_buf; + rt_size_t count = 0; + rt_err_t result = 0; + + message.instruction.content = ptr[0]; + message.instruction.qspi_lines = 1; + count++; + + /* get address */ + if (length > 1) + { + if (device->config.medium_size > 0x1000000 && length >= 5) + { + /* medium size greater than 16Mb, address size is 4 Byte */ + message.address.content = (ptr[1] << 24) | (ptr[2] << 16) | (ptr[3] << 8) | (ptr[4]); + message.address.size = 32; + message.address.qspi_lines = 1; + count += 4; + } + else if (length >= 4) + { + /* address size is 3 Byte */ + message.address.content = (ptr[1] << 16) | (ptr[2] << 8) | (ptr[3]); + message.address.size = 24; + message.address.qspi_lines = 1; + count += 3; + } + else + { + return -RT_ERROR; + } + + } + else + { + /* no address stage */ + message.address.content = 0 ; + message.address.qspi_lines = 0; + message.address.size = 0; + } + + message.alternate_bytes.content = 0; + message.alternate_bytes.size = 0; + message.alternate_bytes.qspi_lines = 0; + + message.dummy_cycles = 0; + + /* determine if there is data to send */ + if (length - count > 0) + { + message.qspi_data_lines = 1; + } + else + { + message.qspi_data_lines = 0; + + } + + /* set send buf and send size */ + message.parent.send_buf = ptr + count; + message.parent.recv_buf = RT_NULL; + message.parent.length = length - count; + message.parent.cs_take = 1; + message.parent.cs_release = 1; + + result = rt_qspi_transfer_message(device, &message); + if (result == 0) + { + result = -RT_EIO; + } + else + { + result = length; + } + + return result; +} diff --git a/components/drivers/spi/spi_core.c b/components/drivers/spi/spi_core.c index 9e404d7c9480b1cdafeee2d8564c72d1b3eeee0a..64b0d2e4964482c6d0657f3af66eda20af40e737 100644 --- a/components/drivers/spi/spi_core.c +++ b/components/drivers/spi/spi_core.c @@ -34,6 +34,8 @@ rt_err_t rt_spi_bus_register(struct rt_spi_bus *bus, bus->ops = ops; /* initialize owner */ bus->owner = RT_NULL; + /* set bus mode */ + bus->mode = RT_SPI_BUS_MODE_SPI; return RT_EOK; }