static void wl1251_spi_write(struct wl1251 *wl, int addr, void *buf, size_t len) { struct spi_transfer t[2]; struct spi_message m; u32 *cmd; cmd = &wl->buffer_cmd; *cmd = 0; *cmd |= WSPI_CMD_WRITE; *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; *cmd |= addr & WSPI_CMD_BYTE_ADDR; spi_message_init(&m); memset(t, 0, sizeof(t)); t[0].tx_buf = cmd; t[0].len = sizeof(*cmd); spi_message_add_tail(&t[0], &m); t[1].tx_buf = buf; t[1].len = len; spi_message_add_tail(&t[1], &m); spi_sync(wl_to_spi(wl), &m); wl1251_dump(DEBUG_SPI, "spi_write cmd -> ", cmd, sizeof(*cmd)); wl1251_dump(DEBUG_SPI, "spi_write buf -> ", buf, len); }
static void wl1251_spi_reset(struct wl1251 *wl) { u8 *cmd; struct spi_transfer t; struct spi_message m; cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); if (!cmd) { wl1251_error("could not allocate cmd for spi reset"); return; } memset(&t, 0, sizeof(t)); spi_message_init(&m); memset(cmd, 0xff, WSPI_INIT_CMD_LEN); t.tx_buf = cmd; t.len = WSPI_INIT_CMD_LEN; spi_message_add_tail(&t, &m); spi_sync(wl_to_spi(wl), &m); wl1251_dump(DEBUG_SPI, "spi reset -> ", cmd, WSPI_INIT_CMD_LEN); kfree(cmd); }
static void wl1251_spi_wake(struct wl1251 *wl) { u8 crc[WSPI_INIT_CMD_CRC_LEN], *cmd; struct spi_transfer t; struct spi_message m; cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); if (!cmd) { wl1251_error("could not allocate cmd for spi init"); return; } memset(crc, 0, sizeof(crc)); memset(&t, 0, sizeof(t)); spi_message_init(&m); /* * Set WSPI_INIT_COMMAND * the data is being send from the MSB to LSB */ cmd[2] = 0xff; cmd[3] = 0xff; cmd[1] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX; cmd[0] = 0; cmd[7] = 0; cmd[6] |= HW_ACCESS_WSPI_INIT_CMD_MASK << 3; cmd[6] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN; if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0) cmd[5] |= WSPI_INIT_CMD_DIS_FIXEDBUSY; else cmd[5] |= WSPI_INIT_CMD_EN_FIXEDBUSY; cmd[5] |= WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS | WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS; crc[0] = cmd[1]; crc[1] = cmd[0]; crc[2] = cmd[7]; crc[3] = cmd[6]; crc[4] = cmd[5]; cmd[4] |= crc7(0, crc, WSPI_INIT_CMD_CRC_LEN) << 1; cmd[4] |= WSPI_INIT_CMD_END; t.tx_buf = cmd; t.len = WSPI_INIT_CMD_LEN; spi_message_add_tail(&t, &m); spi_sync(wl_to_spi(wl), &m); wl1251_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN); kfree(cmd); }
static void wl1251_spi_read(struct wl1251 *wl, int addr, void *buf, size_t len) { struct spi_transfer t[3]; struct spi_message m; u8 *busy_buf; u32 *cmd; cmd = &wl->buffer_cmd; busy_buf = wl->buffer_busyword; *cmd = 0; *cmd |= WSPI_CMD_READ; *cmd |= (len << WSPI_CMD_BYTE_LENGTH_OFFSET) & WSPI_CMD_BYTE_LENGTH; *cmd |= addr & WSPI_CMD_BYTE_ADDR; spi_message_init(&m); memset(t, 0, sizeof(t)); t[0].tx_buf = cmd; t[0].len = 4; spi_message_add_tail(&t[0], &m); /* Busy and non busy words read */ t[1].rx_buf = busy_buf; t[1].len = WL1251_BUSY_WORD_LEN; spi_message_add_tail(&t[1], &m); t[2].rx_buf = buf; t[2].len = len; spi_message_add_tail(&t[2], &m); spi_sync(wl_to_spi(wl), &m); /* FIXME: check busy words */ wl1251_dump(DEBUG_SPI, "spi_read cmd -> ", cmd, sizeof(*cmd)); wl1251_dump(DEBUG_SPI, "spi_read buf <- ", buf, len); }
static void wl1251_spi_wake(struct wl1251 *wl) { struct spi_transfer t; struct spi_message m; u8 *cmd = kzalloc(WSPI_INIT_CMD_LEN, GFP_KERNEL); if (!cmd) { wl1251_error("could not allocate cmd for spi init"); return; } memset(&t, 0, sizeof(t)); spi_message_init(&m); /* Set WSPI_INIT_COMMAND * the data is being send from the MSB to LSB */ cmd[0] = 0xff; cmd[1] = 0xff; cmd[2] = WSPI_INIT_CMD_START | WSPI_INIT_CMD_TX; cmd[3] = 0; cmd[4] = 0; cmd[5] = HW_ACCESS_WSPI_INIT_CMD_MASK << 3; cmd[5] |= HW_ACCESS_WSPI_FIXED_BUSY_LEN & WSPI_INIT_CMD_FIXEDBUSY_LEN; cmd[6] = WSPI_INIT_CMD_IOD | WSPI_INIT_CMD_IP | WSPI_INIT_CMD_CS | WSPI_INIT_CMD_WSPI | WSPI_INIT_CMD_WS; if (HW_ACCESS_WSPI_FIXED_BUSY_LEN == 0) cmd[6] |= WSPI_INIT_CMD_DIS_FIXEDBUSY; else cmd[6] |= WSPI_INIT_CMD_EN_FIXEDBUSY; cmd[7] = crc7_be(0, cmd+2, WSPI_INIT_CMD_CRC_LEN) | WSPI_INIT_CMD_END; /* * The above is the logical order; it must actually be stored * in the buffer byte-swapped. */ __swab32s((u32 *)cmd); __swab32s((u32 *)cmd+1); t.tx_buf = cmd; t.len = WSPI_INIT_CMD_LEN; spi_message_add_tail(&t, &m); spi_sync(wl_to_spi(wl), &m); wl1251_dump(DEBUG_SPI, "spi init -> ", cmd, WSPI_INIT_CMD_LEN); kfree(cmd); }