leandrof/linux
1
0
Fork 0
forked from Minki/linux
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ath5k: Update PLL programming for turbo/half/quarter

Browse Source 
* Set correct PLL settings for each bwmode

 Signed-off-by: Nick Kossifidis <mickflemm@gmail.com>

Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Nick Kossifidis 2010-11-23 21:33:22 +02:00 committed by John W. Linville
parent a2677fe429
commit f08fbf6cf4
1 changed files with 23 additions and 5 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
drivers/net/wireless/ath/ath5k/reset.c
View File

@ -500,7 +500,6 @@ int ath5k_hw_on_hold(struct ath5k_hw *ah)
/*
* Bring up MAC + PHY Chips and program PLL
* TODO: Half/Quarter rate support
*/
int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
{
@ -588,7 +587,8 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
* CCK headers) operation. We need to test
* this, 5211 might support ofdm-only g after
* all, there are also initial register values
* in the code for g mode (see initvals.c). */
* in the code for g mode (see initvals.c).
*/
if (ah->ah_version == AR5K_AR5211)
mode |= AR5K_PHY_MODE_MOD_OFDM;
else
@ -601,6 +601,7 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
} else if (flags & CHANNEL_5GHZ) {
mode |= AR5K_PHY_MODE_FREQ_5GHZ;
/* Different PLL setting for 5413 */
if (ah->ah_radio == AR5K_RF5413)
clock = AR5K_PHY_PLL_40MHZ_5413;
else
@ -618,12 +619,29 @@ int ath5k_hw_nic_wakeup(struct ath5k_hw *ah, int flags, bool initial)
return -EINVAL;
}
if (flags & CHANNEL_TURBO)
turbo = AR5K_PHY_TURBO_MODE | AR5K_PHY_TURBO_SHORT;
/*XXX: Can bwmode be used with dynamic mode ?
* (I don't think it supports 44MHz) */
/* On 2425 initvals TURBO_SHORT is not pressent */
if (ah->ah_bwmode == AR5K_BWMODE_40MHZ) {
turbo = AR5K_PHY_TURBO_MODE |
(ah->ah_radio == AR5K_RF2425) ? 0 :
AR5K_PHY_TURBO_SHORT;
} else if (ah->ah_bwmode != AR5K_BWMODE_DEFAULT) {
if (ah->ah_radio == AR5K_RF5413) {
mode |= (ah->ah_bwmode == AR5K_BWMODE_10MHZ) ?
AR5K_PHY_MODE_HALF_RATE :
AR5K_PHY_MODE_QUARTER_RATE;
} else if (ah->ah_version == AR5K_AR5212) {
clock |= (ah->ah_bwmode == AR5K_BWMODE_10MHZ) ?
AR5K_PHY_PLL_HALF_RATE :
AR5K_PHY_PLL_QUARTER_RATE;
}
}
} else { /* Reset the device */
/* ...enable Atheros turbo mode if requested */
if (flags & CHANNEL_TURBO)
if (ah->ah_bwmode == AR5K_BWMODE_40MHZ)
ath5k_hw_reg_write(ah, AR5K_PHY_TURBO_MODE,
AR5K_PHY_TURBO);
}