diff options
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi_bfin5xx.c | 51 |
1 files changed, 31 insertions, 20 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c index a8311a83ae96..045d3ecf459d 100644 --- a/drivers/spi/spi_bfin5xx.c +++ b/drivers/spi/spi_bfin5xx.c @@ -209,17 +209,26 @@ static void cs_deactive(struct chip_data *chip) write_FLAG(flag); } -#define MAX_SPI0_SSEL 7 +#define MAX_SPI_SSEL 7 /* stop controller and re-config current chip*/ static int restore_state(struct driver_data *drv_data) { struct chip_data *chip = drv_data->cur_chip; int ret = 0; - u16 ssel[MAX_SPI0_SSEL] = {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3, - P_SPI0_SSEL4, P_SPI0_SSEL5, - P_SPI0_SSEL6, P_SPI0_SSEL7,}; - + u16 ssel[3][MAX_SPI_SSEL] = { + {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3, + P_SPI0_SSEL4, P_SPI0_SSEL5, + P_SPI0_SSEL6, P_SPI0_SSEL7}, + + {P_SPI1_SSEL1, P_SPI1_SSEL2, P_SPI1_SSEL3, + P_SPI1_SSEL4, P_SPI1_SSEL5, + P_SPI1_SSEL6, P_SPI1_SSEL7}, + + {P_SPI2_SSEL1, P_SPI2_SSEL2, P_SPI2_SSEL3, + P_SPI2_SSEL4, P_SPI2_SSEL5, + P_SPI2_SSEL6, P_SPI2_SSEL7}, + }; /* Clear status and disable clock */ write_STAT(BIT_STAT_CLR); bfin_spi_disable(drv_data); @@ -234,9 +243,9 @@ static int restore_state(struct driver_data *drv_data) int i = chip->chip_select_num; dev_dbg(&drv_data->pdev->dev, "chip select number is %d\n", i); - - if ((i > 0) && (i <= MAX_SPI0_SSEL)) - ret = peripheral_request(ssel[i-1], DRV_NAME); + if ((i > 0) && (i <= MAX_SPI_SSEL)) + ret = peripheral_request( + ssel[drv_data->master->bus_num][i-1], DRV_NAME); chip->chip_select_requested = 1; } @@ -329,7 +338,6 @@ static void u8_reader(struct driver_data *drv_data) write_TDBR(0xFFFF); dummy_read(); - while (drv_data->rx < drv_data->rx_end - 1) { while (!(read_STAT() & BIT_STAT_RXS)) continue; @@ -640,7 +648,6 @@ static void pump_transfers(unsigned long data) message = drv_data->cur_msg; transfer = drv_data->cur_transfer; chip = drv_data->cur_chip; - /* * if msg is error or done, report it back using complete() callback */ @@ -1206,16 +1213,20 @@ static inline int destroy_queue(struct driver_data *drv_data) return 0; } -static int setup_pin_mux(int action) +static int setup_pin_mux(int action, int bus_num) { - u16 pin_req[] = {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0}; + u16 pin_req[3][4] = { + {P_SPI0_SCK, P_SPI0_MISO, P_SPI0_MOSI, 0}, + {P_SPI1_SCK, P_SPI1_MISO, P_SPI1_MOSI, 0}, + {P_SPI2_SCK, P_SPI2_MISO, P_SPI2_MOSI, 0}, + }; if (action) { - if (peripheral_request_list(pin_req, DRV_NAME)) + if (peripheral_request_list(pin_req[bus_num], DRV_NAME)) return -EFAULT; } else { - peripheral_free_list(pin_req); + peripheral_free_list(pin_req[bus_num]); } return 0; @@ -1239,11 +1250,6 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev) return -ENOMEM; } - if (setup_pin_mux(1)) { - dev_err(&pdev->dev, ": Requesting Peripherals failed\n"); - goto out_error; - } - drv_data = spi_master_get_devdata(master); drv_data->master = master; drv_data->master_info = platform_info; @@ -1298,6 +1304,11 @@ static int __init bfin5xx_spi_probe(struct platform_device *pdev) goto out_error_queue_alloc; } + if (setup_pin_mux(1, master->bus_num)) { + dev_err(&pdev->dev, ": Requesting Peripherals failed\n"); + goto out_error; + } + dev_info(dev, "%s, Version %s, regs_base @ 0x%08x\n", DRV_DESC, DRV_VERSION, spi_regs_base); return status; @@ -1340,7 +1351,7 @@ static int __devexit bfin5xx_spi_remove(struct platform_device *pdev) /* Disconnect from the SPI framework */ spi_unregister_master(drv_data->master); - setup_pin_mux(0); + setup_pin_mux(0, drv_data->master->bus_num); /* Prevent double remove */ platform_set_drvdata(pdev, NULL); |