tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
b43: HT-PHY: switch radio to requested channel
Switching channel happens after specific SHM write to B43_SHM_SH_CHAN.
This is the way we found it in BCM4331 MMIO dumps. By comparing with
N-PHY code we noticed there is routing used for SYN and TX/RX.
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
authored by
Rafał Miłecki
and committed by
John W. Linville
a6b7da5d
39ca554c
+68
-1
+39
drivers/net/wireless/b43/phy_ht.c
+39
drivers/net/wireless/b43/phy_ht.c
···
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static void b43_radio_2059_channel_setup(struct b43_wldev *dev,
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const struct b43_phy_ht_channeltab_e_radio2059 *e)
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{
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u8 i;
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u16 routing;
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+
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b43_radio_write(dev, 0x16, e->radio_syn16);
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b43_radio_write(dev, 0x17, e->radio_syn17);
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b43_radio_write(dev, 0x22, e->radio_syn22);
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b43_radio_write(dev, 0x25, e->radio_syn25);
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b43_radio_write(dev, 0x27, e->radio_syn27);
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b43_radio_write(dev, 0x28, e->radio_syn28);
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b43_radio_write(dev, 0x29, e->radio_syn29);
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b43_radio_write(dev, 0x2c, e->radio_syn2c);
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b43_radio_write(dev, 0x2d, e->radio_syn2d);
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b43_radio_write(dev, 0x37, e->radio_syn37);
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b43_radio_write(dev, 0x41, e->radio_syn41);
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b43_radio_write(dev, 0x43, e->radio_syn43);
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b43_radio_write(dev, 0x47, e->radio_syn47);
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b43_radio_write(dev, 0x4a, e->radio_syn4a);
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b43_radio_write(dev, 0x58, e->radio_syn58);
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b43_radio_write(dev, 0x5a, e->radio_syn5a);
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b43_radio_write(dev, 0x6a, e->radio_syn6a);
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b43_radio_write(dev, 0x6d, e->radio_syn6d);
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b43_radio_write(dev, 0x6e, e->radio_syn6e);
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b43_radio_write(dev, 0x92, e->radio_syn92);
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b43_radio_write(dev, 0x98, e->radio_syn98);
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for (i = 0; i < 2; i++) {
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routing = i ? 0x800 : 0x400;
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b43_radio_write(dev, routing | 0x4a, e->radio_rxtx4a);
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b43_radio_write(dev, routing | 0x58, e->radio_rxtx58);
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b43_radio_write(dev, routing | 0x5a, e->radio_rxtx5a);
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b43_radio_write(dev, routing | 0x6a, e->radio_rxtx6a);
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b43_radio_write(dev, routing | 0x6d, e->radio_rxtx6d);
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b43_radio_write(dev, routing | 0x6e, e->radio_rxtx6e);
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b43_radio_write(dev, routing | 0x92, e->radio_rxtx92);
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b43_radio_write(dev, routing | 0x98, e->radio_rxtx98);
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}
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udelay(50);
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/* TODO */
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}
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+29
-1
drivers/net/wireless/b43/radio_2059.h
+29
-1
drivers/net/wireless/b43/radio_2059.h
···
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/* The channel frequency in MHz */
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u16 freq;
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/* Values for radio registers */
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-
/* TODO */
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u8 radio_syn16;
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u8 radio_syn17;
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u8 radio_syn22;
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u8 radio_syn25;
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u8 radio_syn27;
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u8 radio_syn28;
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u8 radio_syn29;
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u8 radio_syn2c;
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u8 radio_syn2d;
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u8 radio_syn37;
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u8 radio_syn41;
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u8 radio_syn43;
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u8 radio_syn47;
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u8 radio_syn4a;
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u8 radio_syn58;
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u8 radio_syn5a;
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u8 radio_syn6a;
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u8 radio_syn6d;
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u8 radio_syn6e;
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u8 radio_syn92;
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u8 radio_syn98;
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u8 radio_rxtx4a;
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u8 radio_rxtx58;
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u8 radio_rxtx5a;
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u8 radio_rxtx6a;
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u8 radio_rxtx6d;
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u8 radio_rxtx6e;
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u8 radio_rxtx92;
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u8 radio_rxtx98;
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/* Values for PHY registers */
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struct b43_phy_ht_channeltab_e_phy phy_regs;
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};