wl1271: make ref_clock configurable by board

The wl1271 device is using a reference clock that may change
between board to board.

Make the ref_clock parameter configurable by board settings
instead of having a hard coded value in the sources.

Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>

6 files changed, 12 insertions, 5 deletions

diff --git a/drivers/net/wireless/wl12xx/wl1271.h b/drivers/net/wireless/wl12xx/wl1271.h
index faa5925efe30..4134f4495b95 100644
--- a/drivers/net/wireless/wl12xx/wl1271.h
+++ b/drivers/net/wireless/wl12xx/wl1271.h
@@ -330,6 +330,7 @@ struct wl1271 {
 
         void (*set_power)(bool enable);
         int irq;
+        int ref_clock;
 
         spinlock_t wl_lock;
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.c b/drivers/net/wireless/wl12xx/wl1271_boot.c
index f36430b0336d..fc21db810812 100644
--- a/drivers/net/wireless/wl12xx/wl1271_boot.c
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.c
@@ -457,17 +457,20 @@ int wl1271_boot(struct wl1271 *wl)
 {
         int ret = 0;
         u32 tmp, clk, pause;
+        int ref_clock = wl->ref_clock;
 
         wl1271_boot_hw_version(wl);
 
-        if (REF_CLOCK == 0 || REF_CLOCK == 2 || REF_CLOCK == 4)
+        if (ref_clock == 0 || ref_clock == 2 || ref_clock == 4)
                 /* ref clk: 19.2/38.4/38.4-XTAL */
                 clk = 0x3;
-        else if (REF_CLOCK == 1 || REF_CLOCK == 3)
+        else if (ref_clock == 1 || ref_clock == 3)
                 /* ref clk: 26/52 */
                 clk = 0x5;
+        else
+                return -EINVAL;
 
-        if (REF_CLOCK != 0) {
+        if (ref_clock != 0) {
                 u16 val;
                 /* Set clock type (open drain) */
                 val = wl1271_top_reg_read(wl, OCP_REG_CLK_TYPE);
@@ -516,7 +519,7 @@ int wl1271_boot(struct wl1271 *wl)
         wl1271_debug(DEBUG_BOOT, "clk2 0x%x", clk);
 
         /* 2 */
-        clk |= (REF_CLOCK << 1) << 4;
+        clk |= (ref_clock << 1) << 4;
         wl1271_write32(wl, DRPW_SCRATCH_START, clk);
 
         wl1271_set_partition(wl, &part_table[PART_WORK]);
diff --git a/drivers/net/wireless/wl12xx/wl1271_boot.h b/drivers/net/wireless/wl12xx/wl1271_boot.h
index f829699d597e..f73b0b15a280 100644
--- a/drivers/net/wireless/wl12xx/wl1271_boot.h
+++ b/drivers/net/wireless/wl12xx/wl1271_boot.h
@@ -46,7 +46,6 @@ struct wl1271_static_data {
 /* delay between retries */
 #define INIT_LOOP_DELAY 50
 
-#define REF_CLOCK            2
 #define WU_COUNTER_PAUSE_VAL 0x3FF
 #define WELP_ARM_COMMAND_VAL 0x4
 
diff --git a/drivers/net/wireless/wl12xx/wl1271_sdio.c b/drivers/net/wireless/wl12xx/wl1271_sdio.c
index 987ecdc9406d..f2f04663627c 100644
--- a/drivers/net/wireless/wl12xx/wl1271_sdio.c
+++ b/drivers/net/wireless/wl12xx/wl1271_sdio.c
@@ -234,6 +234,7 @@ static int __devinit wl1271_probe(struct sdio_func *func,
         }
 
         wl->irq = wlan_data->irq;
+        wl->ref_clock = wlan_data->board_ref_clock;
 
         ret = request_irq(wl->irq, wl1271_irq, 0, DRIVER_NAME, wl);
         if (ret < 0) {
diff --git a/drivers/net/wireless/wl12xx/wl1271_spi.c b/drivers/net/wireless/wl12xx/wl1271_spi.c
index de56d8d9ee66..ced0a9e2c7e1 100644
--- a/drivers/net/wireless/wl12xx/wl1271_spi.c
+++ b/drivers/net/wireless/wl12xx/wl1271_spi.c
@@ -372,6 +372,8 @@ static int __devinit wl1271_probe(struct spi_device *spi)
                 goto out_free;
         }
 
+        wl->ref_clock = pdata->board_ref_clock;
+
         wl->irq = spi->irq;
         if (wl->irq < 0) {
                 wl1271_error("irq missing in platform data");
diff --git a/include/linux/wl12xx.h b/include/linux/wl12xx.h
index bd70563107fa..95deae3968f4 100644
--- a/include/linux/wl12xx.h
+++ b/include/linux/wl12xx.h
@@ -29,6 +29,7 @@ struct wl12xx_platform_data {
         /* SDIO only: IRQ number if WLAN_IRQ line is used, 0 for SDIO IRQs */
         int irq;
         bool use_eeprom;
+        int board_ref_clock;
 };
 
 int wl12xx_set_platform_data(const struct wl12xx_platform_data *data);