spi: spi_bfin, rearrange portmux calls

Move pin muxing to setup and cleanup methods.

Signed-off-by: Sonic Zhang <sonic.zhang@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 045d3ec..4496ed1 100644 (file)
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -136,7 +136,6 @@ struct chip_data {
        u16 flag;
 
        u8 chip_select_num;
-       u8 chip_select_requested;
        u8 n_bytes;
        u8 width;               /* 0 or 1 */
        u8 enable_dma;
@@ -216,19 +215,7 @@ static int restore_state(struct driver_data *drv_data)
 {
        struct chip_data *chip = drv_data->cur_chip;
        int ret = 0;
-       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);
@@ -239,17 +226,6 @@ static int restore_state(struct driver_data *drv_data)
        write_BAUD(chip->baud);
        cs_active(chip);
 
-       if (!chip->chip_select_requested) {
-               int i = chip->chip_select_num;
-
-               dev_dbg(&drv_data->pdev->dev, "chip select number is %d\n", i);
-               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;
-       }
-
        if (ret)
                dev_dbg(&drv_data->pdev->dev,
                        ": request chip select number %d failed\n",
@@ -983,6 +959,22 @@ static int transfer(struct spi_device *spi, struct spi_message *msg)
        return 0;
 }
 
+#define MAX_SPI_SSEL   7
+
+static 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},
+};
+
 /* first setup for new devices */
 static int setup(struct spi_device *spi)
 {
@@ -1113,6 +1105,12 @@ static int setup(struct spi_device *spi)
 
        spi_set_ctldata(spi, chip);
 
+       dev_dbg(&spi->dev, "chip select number is %d\n", chip->chip_select_num);
+       if ((chip->chip_select_num > 0)
+               && (chip->chip_select_num <= spi->master->num_chipselect))
+               peripheral_request(ssel[spi->master->bus_num]
+                       [chip->chip_select_num-1], DRV_NAME);
+
        return 0;
 }
 
@@ -1124,6 +1122,11 @@ static void cleanup(struct spi_device *spi)
 {
        struct chip_data *chip = spi_get_ctldata(spi);
 
+       if ((chip->chip_select_num > 0)
+               && (chip->chip_select_num <= spi->master->num_chipselect))
+               peripheral_free(ssel[spi->master->bus_num]
+                                       [chip->chip_select_num-1]);
+
        kfree(chip);
 }