hollalinux
/
linux-sg2042
mirror of https://github.com/sophgo/linux-riscv.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

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>
This commit is contained in:
Sonic Zhang 2007-12-04 23:45:16 -08:00 committed by Linus Torvalds
parent 7c4ef09449
commit 12e17c4267
1 changed files with 27 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

51
drivers/spi/spi_bfin5xx.c
View File

@ -136,7 +136,6 @@ struct chip_data {
u16 flag; u16 flag;
u8 chip_select_num; u8 chip_select_num;
u8 chip_select_requested;
u8 n_bytes; u8 n_bytes;
u8 width; /* 0 or 1 */ u8 width; /* 0 or 1 */
u8 enable_dma; u8 enable_dma;
@ -216,19 +215,7 @@ static int restore_state(struct driver_data *drv_data)
{ {
struct chip_data *chip = drv_data->cur_chip; struct chip_data *chip = drv_data->cur_chip;
int ret = 0; 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 */ /* Clear status and disable clock */
write_STAT(BIT_STAT_CLR); write_STAT(BIT_STAT_CLR);
bfin_spi_disable(drv_data); bfin_spi_disable(drv_data);
@ -239,17 +226,6 @@ static int restore_state(struct driver_data *drv_data)
write_BAUD(chip->baud); write_BAUD(chip->baud);
cs_active(chip); 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) if (ret)
dev_dbg(&drv_data->pdev->dev, dev_dbg(&drv_data->pdev->dev,
": request chip select number %d failed\n", ": request chip select number %d failed\n",
@ -983,6 +959,22 @@ static int transfer(struct spi_device *spi, struct spi_message *msg)
return 0; 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 */ /* first setup for new devices */
static int setup(struct spi_device *spi) static int setup(struct spi_device *spi)
{ {
@ -1113,6 +1105,12 @@ static int setup(struct spi_device *spi)
spi_set_ctldata(spi, chip); 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; return 0;
} }
@ -1124,6 +1122,11 @@ static void cleanup(struct spi_device *spi)
{ {
struct chip_data *chip = spi_get_ctldata(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); kfree(chip);
} }