openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

ath9k: add new function ath9k_hw_read_array 

REG_READ generate most overhead on usb bus. It send and read micro packages
and reduce usb bandwidth. To reduce this overhead we should read in batches.

Signed-off-by: Oleksij Rempel <linux@rempel-privat.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
This commit is contained in:
Oleksij Rempel 2015-03-22 19:29:51 +01:00 committed by Kalle Valo
parent d55ce0a6f9
commit a57cb45a0a
2 changed files with 33 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
drivers/net/wireless/ath/ath9k/hw.c
View File

@ -121,6 +121,36 @@ void ath9k_hw_write_array(struct ath_hw *ah, const struct ar5416IniArray *array,
REGWRITE_BUFFER_FLUSH(ah);
}
void ath9k_hw_read_array(struct ath_hw *ah, u32 array[][2], int size)
{
u32 *tmp_reg_list, *tmp_data;
int i;
tmp_reg_list = kmalloc(size * sizeof(u32), GFP_KERNEL);
if (!tmp_reg_list) {
dev_err(ah->dev, "%s: tmp_reg_list: alloc filed\n", __func__);
return;
}
tmp_data = kmalloc(size * sizeof(u32), GFP_KERNEL);
if (!tmp_data) {
dev_err(ah->dev, "%s tmp_data: alloc filed\n", __func__);
goto error_tmp_data;
}
for (i = 0; i < size; i++)
tmp_reg_list[i] = array[i][0];
REG_READ_MULTI(ah, tmp_reg_list, tmp_data, size);
for (i = 0; i < size; i++)
array[i][1] = tmp_data[i];
kfree(tmp_data);
error_tmp_data:
kfree(tmp_reg_list);
}
u32 ath9k_hw_reverse_bits(u32 val, u32 n)
{
u32 retval;

3
drivers/net/wireless/ath/ath9k/hw.h
View File

@ -138,6 +138,8 @@
#define REG_WRITE_ARRAY(iniarray, column, regWr) \
ath9k_hw_write_array(ah, iniarray, column, &(regWr))
#define REG_READ_ARRAY(ah, array, size) \
ath9k_hw_read_array(ah, array, size)
#define AR_GPIO_OUTPUT_MUX_AS_OUTPUT 0
#define AR_GPIO_OUTPUT_MUX_AS_PCIE_ATTENTION_LED 1
@ -1030,6 +1032,7 @@ void ath9k_hw_synth_delay(struct ath_hw *ah, struct ath9k_channel *chan,
bool ath9k_hw_wait(struct ath_hw *ah, u32 reg, u32 mask, u32 val, u32 timeout);
void ath9k_hw_write_array(struct ath_hw *ah, const struct ar5416IniArray *array,
int column, unsigned int *writecnt);
void ath9k_hw_read_array(struct ath_hw *ah, u32 array[][2], int size);
u32 ath9k_hw_reverse_bits(u32 val, u32 n);
u16 ath9k_hw_computetxtime(struct ath_hw *ah,
u8 phy, int kbps,