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b43: LCN-PHY: tweaks for channel switching

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They have been taken from brcmsmac, add Broadcom's copyright.

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Rafał Miłecki 2011-09-16 12:33:59 +02:00 committed by John W. Linville
parent 3861b2c5d9
commit b534706a06
1 changed files with 63 additions and 4 deletions
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67
drivers/net/wireless/b43/phy_lcn.c
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@ -20,6 +20,14 @@
the Free Software Foundation, Inc., 51 Franklin Steet, Fifth Floor,
Boston, MA 02110-1301, USA.
This file incorporates work covered by the following copyright and
permission notice:
Copyright (c) 2010 Broadcom Corporation
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
*/
#include <linux/slab.h>
@ -278,14 +286,50 @@ static void b43_phy_lcn_sense_setup(struct b43_wldev *dev)
* Channel switching ops.
**************************************************/
/* wlc_lcnphy_set_chanspec_tweaks */
static void b43_phy_lcn_set_channel_tweaks(struct b43_wldev *dev, int channel)
{
struct bcma_drv_cc *cc = &dev->dev->bdev->bus->drv_cc;
b43_phy_maskset(dev, 0x448, ~0x300, (channel == 14) ? 0x200 : 0x100);
if (channel == 1 || channel == 2 || channel == 3 || channel == 4 ||
channel == 9 || channel == 10 || channel == 11 || channel == 12) {
bcma_chipco_pll_write(cc, 0x2, 0x03000c04);
bcma_chipco_pll_maskset(cc, 0x3, 0x00ffffff, 0x0);
bcma_chipco_pll_write(cc, 0x4, 0x200005c0);
bcma_cc_set32(cc, BCMA_CC_PMU_CTL, 0x400);
b43_phy_write(dev, 0x942, 0);
/* b43_phy_lcn_txrx_spur_avoidance_mode(dev, false); */
b43_phy_maskset(dev, 0x424, (u16) ~0xff00, 0x1b00);
b43_phy_write(dev, 0x425, 0x5907);
} else {
bcma_chipco_pll_write(cc, 0x2, 0x03140c04);
bcma_chipco_pll_maskset(cc, 0x3, 0x00ffffff, 0x333333);
bcma_chipco_pll_write(cc, 0x4, 0x202c2820);
bcma_cc_set32(cc, BCMA_CC_PMU_CTL, 0x400);
b43_phy_write(dev, 0x942, 0);
/* b43_phy_lcn_txrx_spur_avoidance_mode(dev, true); */
b43_phy_maskset(dev, 0x424, (u16) ~0xff00, 0x1f00);
b43_phy_write(dev, 0x425, 0x590a);
}
b43_phy_set(dev, 0x44a, 0x44);
b43_phy_write(dev, 0x44a, 0x80);
}
/* wlc_phy_chanspec_set_lcnphy */
static int b43_phy_lcn_set_channel(struct b43_wldev *dev,
struct ieee80211_channel *channel,
enum nl80211_channel_type channel_type)
{
/* TODO: PLL and PHY ops */
b43_phy_set(dev, 0x44a, 0x44);
b43_phy_write(dev, 0x44a, 0x80);
b43_phy_lcn_set_channel_tweaks(dev, channel->hw_value);
b43_phy_set(dev, 0x44a, 0x44);
b43_phy_write(dev, 0x44a, 0x80);
@ -336,6 +380,8 @@ static void b43_phy_lcn_op_prepare_structs(struct b43_wldev *dev)
/* wlc_phy_init_lcnphy */
static int b43_phy_lcn_op_init(struct b43_wldev *dev)
{
struct bcma_drv_cc *cc = &dev->dev->bdev->bus->drv_cc;
b43_phy_set(dev, 0x44a, 0x80);
b43_phy_mask(dev, 0x44a, 0x7f);
b43_phy_set(dev, 0x6d1, 0x80);
@ -359,6 +405,19 @@ static int b43_phy_lcn_op_init(struct b43_wldev *dev)
b43_phy_lcn_sense_setup(dev);
b43_switch_channel(dev, dev->phy.channel);
bcma_chipco_regctl_maskset(cc, 0, 0xf, 0x9);
bcma_chipco_chipctl_maskset(cc, 0, 0, 0x03cddddd);
/* TODO */
b43_phy_set(dev, 0x448, 0x4000);
udelay(100);
b43_phy_mask(dev, 0x448, ~0x4000);
/* TODO */
return 0;
}