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authorSonic Zhang <sonic.zhang@analog.com>2007-12-05 02:45:16 -0500
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-12-05 12:21:19 -0500
commit12e17c4267a5b2a5ba77bd53a62388be641534b8 (patch)
tree4c45477c323808523b071b25f4e8446ccec13f41 /drivers/spi/spi_bfin5xx.c
parent7c4ef09449ca382da2e39b93ca9d03e3dbd5c17c (diff)
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>
Diffstat (limited to 'drivers/spi/spi_bfin5xx.c')
-rw-r--r--drivers/spi/spi_bfin5xx.c53
1 files changed, 28 insertions, 25 deletions
diff --git a/drivers/spi/spi_bfin5xx.c b/drivers/spi/spi_bfin5xx.c
index 045d3ecf459d..4496ed158e6b 100644
--- a/drivers/spi/spi_bfin5xx.c
+++ b/drivers/spi/spi_bfin5xx.c
@@ -136,7 +136,6 @@ struct chip_data {
136 u16 flag; 136 u16 flag;
137 137
138 u8 chip_select_num; 138 u8 chip_select_num;
139 u8 chip_select_requested;
140 u8 n_bytes; 139 u8 n_bytes;
141 u8 width; /* 0 or 1 */ 140 u8 width; /* 0 or 1 */
142 u8 enable_dma; 141 u8 enable_dma;
@@ -216,19 +215,7 @@ static int restore_state(struct driver_data *drv_data)
216{ 215{
217 struct chip_data *chip = drv_data->cur_chip; 216 struct chip_data *chip = drv_data->cur_chip;
218 int ret = 0; 217 int ret = 0;
219 u16 ssel[3][MAX_SPI_SSEL] = { 218
220 {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3,
221 P_SPI0_SSEL4, P_SPI0_SSEL5,
222 P_SPI0_SSEL6, P_SPI0_SSEL7},
223
224 {P_SPI1_SSEL1, P_SPI1_SSEL2, P_SPI1_SSEL3,
225 P_SPI1_SSEL4, P_SPI1_SSEL5,
226 P_SPI1_SSEL6, P_SPI1_SSEL7},
227
228 {P_SPI2_SSEL1, P_SPI2_SSEL2, P_SPI2_SSEL3,
229 P_SPI2_SSEL4, P_SPI2_SSEL5,
230 P_SPI2_SSEL6, P_SPI2_SSEL7},
231 };
232 /* Clear status and disable clock */ 219 /* Clear status and disable clock */
233 write_STAT(BIT_STAT_CLR); 220 write_STAT(BIT_STAT_CLR);
234 bfin_spi_disable(drv_data); 221 bfin_spi_disable(drv_data);
@@ -239,17 +226,6 @@ static int restore_state(struct driver_data *drv_data)
239 write_BAUD(chip->baud); 226 write_BAUD(chip->baud);
240 cs_active(chip); 227 cs_active(chip);
241 228
242 if (!chip->chip_select_requested) {
243 int i = chip->chip_select_num;
244
245 dev_dbg(&drv_data->pdev->dev, "chip select number is %d\n", i);
246 if ((i > 0) && (i <= MAX_SPI_SSEL))
247 ret = peripheral_request(
248 ssel[drv_data->master->bus_num][i-1], DRV_NAME);
249
250 chip->chip_select_requested = 1;
251 }
252
253 if (ret) 229 if (ret)
254 dev_dbg(&drv_data->pdev->dev, 230 dev_dbg(&drv_data->pdev->dev,
255 ": request chip select number %d failed\n", 231 ": request chip select number %d failed\n",
@@ -983,6 +959,22 @@ static int transfer(struct spi_device *spi, struct spi_message *msg)
983 return 0; 959 return 0;
984} 960}
985 961
962#define MAX_SPI_SSEL 7
963
964static u16 ssel[3][MAX_SPI_SSEL] = {
965 {P_SPI0_SSEL1, P_SPI0_SSEL2, P_SPI0_SSEL3,
966 P_SPI0_SSEL4, P_SPI0_SSEL5,
967 P_SPI0_SSEL6, P_SPI0_SSEL7},
968
969 {P_SPI1_SSEL1, P_SPI1_SSEL2, P_SPI1_SSEL3,
970 P_SPI1_SSEL4, P_SPI1_SSEL5,
971 P_SPI1_SSEL6, P_SPI1_SSEL7},
972
973 {P_SPI2_SSEL1, P_SPI2_SSEL2, P_SPI2_SSEL3,
974 P_SPI2_SSEL4, P_SPI2_SSEL5,
975 P_SPI2_SSEL6, P_SPI2_SSEL7},
976};
977
986/* first setup for new devices */ 978/* first setup for new devices */
987static int setup(struct spi_device *spi) 979static int setup(struct spi_device *spi)
988{ 980{
@@ -1113,6 +1105,12 @@ static int setup(struct spi_device *spi)
1113 1105
1114 spi_set_ctldata(spi, chip); 1106 spi_set_ctldata(spi, chip);
1115 1107
1108 dev_dbg(&spi->dev, "chip select number is %d\n", chip->chip_select_num);
1109 if ((chip->chip_select_num > 0)
1110 && (chip->chip_select_num <= spi->master->num_chipselect))
1111 peripheral_request(ssel[spi->master->bus_num]
1112 [chip->chip_select_num-1], DRV_NAME);
1113
1116 return 0; 1114 return 0;
1117} 1115}
1118 1116
@@ -1124,6 +1122,11 @@ static void cleanup(struct spi_device *spi)
1124{ 1122{
1125 struct chip_data *chip = spi_get_ctldata(spi); 1123 struct chip_data *chip = spi_get_ctldata(spi);
1126 1124
1125 if ((chip->chip_select_num > 0)
1126 && (chip->chip_select_num <= spi->master->num_chipselect))
1127 peripheral_free(ssel[spi->master->bus_num]
1128 [chip->chip_select_num-1]);
1129
1127 kfree(chip); 1130 kfree(chip);
1128} 1131}
1129 1132