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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>
This commit is contained in:
Ohad Ben-Cohen 2010-09-16 01:31:51 +02:00 committed by John W. Linville
parent 09cecc340b
commit 15cea99306
6 changed files with 12 additions and 5 deletions
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1
drivers/net/wireless/wl12xx/wl1271.h
View File

@ -330,6 +330,7 @@ struct wl1271 {
void (*set_power)(bool enable);
int irq;
int ref_clock;
spinlock_t wl_lock;

11
drivers/net/wireless/wl12xx/wl1271_boot.c
View File

@ -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]);

1
drivers/net/wireless/wl12xx/wl1271_boot.h
View File

@ -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

1
drivers/net/wireless/wl12xx/wl1271_sdio.c
View File

@ -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) {

2
drivers/net/wireless/wl12xx/wl1271_spi.c
View File

@ -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");

1
include/linux/wl12xx.h
View File

@ -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);