diff options
| author | Jes Sorensen <Jes.Sorensen@redhat.com> | 2016-04-07 14:19:33 -0400 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2016-04-14 15:45:30 +0300 |
| commit | 28e460b02c66116354ced05b570503d252b996e9 (patch) | |
| tree | 6576bb1facb3417927e31577ad9a4ff7752e537e | |
| parent | f991f4e9147b1b7c9546c08f80d8d8f0aa53df2e (diff) | |
rtl8xxxu: Adjust AFE crystal value on 8192eu
Adjust AFE before enabling PLL on 8192eu, probably also needed for
8723bu.
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
| -rw-r--r-- | drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c | 39 | ||||
| -rw-r--r-- | drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h | 4 |
2 files changed, 43 insertions, 0 deletions
diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c index c08bbcbe4a0d..e36fda8c1ad3 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu.c @@ -7093,6 +7093,41 @@ static int rtl8192cu_power_on(struct rtl8xxxu_priv *priv) #endif +/* + * This is needed for 8723bu as well, presumable + */ +static void rtl8192e_crystal_afe_adjust(struct rtl8xxxu_priv *priv) +{ + u8 val8; + u32 val32; + + /* + * 40Mhz crystal source, MAC 0x28[2]=0 + */ + val8 = rtl8xxxu_read8(priv, REG_AFE_PLL_CTRL); + val8 &= 0xfb; + rtl8xxxu_write8(priv, REG_AFE_PLL_CTRL, val8); + + val32 = rtl8xxxu_read32(priv, REG_AFE_CTRL4); + val32 &= 0xfffffc7f; + rtl8xxxu_write32(priv, REG_AFE_CTRL4, val32); + + /* + * 92e AFE parameter + * AFE PLL KVCO selection, MAC 0x28[6]=1 + */ + val8 = rtl8xxxu_read8(priv, REG_AFE_PLL_CTRL); + val8 &= 0xbf; + rtl8xxxu_write8(priv, REG_AFE_PLL_CTRL, val8); + + /* + * AFE PLL KVCO selection, MAC 0x78[21]=0 + */ + val32 = rtl8xxxu_read32(priv, REG_AFE_CTRL4); + val32 &= 0xffdfffff; + rtl8xxxu_write32(priv, REG_AFE_CTRL4, val32); +} + static int rtl8192eu_power_on(struct rtl8xxxu_priv *priv) { u16 val16; @@ -7115,6 +7150,10 @@ static int rtl8192eu_power_on(struct rtl8xxxu_priv *priv) rtl8xxxu_write8(priv, REG_LDO_SW_CTRL, 0x83); } + /* + * Adjust AFE before enabling PLL + */ + rtl8192e_crystal_afe_adjust(priv); rtl8192e_disabled_to_emu(priv); ret = rtl8192e_emu_to_active(priv); diff --git a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h index 2aa14b14a0a5..bb08a3939e46 100644 --- a/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h +++ b/drivers/net/wireless/realtek/rtl8xxxu/rtl8xxxu_regs.h @@ -109,6 +109,9 @@ #define AFE_XTAL_GATE_DIG BIT(17) #define AFE_XTAL_BT_GATE BIT(20) +/* + * 0x0028 is also known as REG_AFE_CTRL2 on 8723bu/8192eu + */ #define REG_AFE_PLL_CTRL 0x0028 #define AFE_PLL_ENABLE BIT(0) #define AFE_PLL_320_ENABLE BIT(1) @@ -192,6 +195,7 @@ control */ #define MULTI_GPS_FUNC_EN BIT(22) /* GPS function enable */ +#define REG_AFE_CTRL4 0x0078 /* 8192eu/8723bu */ #define REG_LDO_SW_CTRL 0x007c /* 8192eu */ #define REG_MCU_FW_DL 0x0080 |