forked from Minki/linux
74553aedd4
While playing with the firmware a while back, I discovered a way to access the device's entire address space before the firmware has been loaded. Previously we were loading the firmware early on (during probe) so that we could read the MAC address from the EEPROM and register a netdevice. Now that we can read the EEPROM without having firmware, we can defer firmware loading until later while still reading the MAC address early on. This has the advantage that zd1211rw can now be built into the kernel -- previously if this was the case, zd1211rw would be loaded before the filesystem is available and firmware loading would fail. Firmware load and other device initialization operations now happen the first time the interface is brought up. Some architectural changes were needed: handling of the is_zd1211b flag was moved into the zd_usb structure, MAC address handling was obviously changed, and a preinit_hw stage was added (the order is now: init, preinit_hw, init_hw). Signed-off-by: Daniel Drake <dsd@gentoo.org> Signed-off-by: John W. Linville <linville@tuxdriver.com>
280 lines
8.3 KiB
C
280 lines
8.3 KiB
C
/* zd_rf_rfmd.c: Functions for the RFMD RF controller
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include <linux/kernel.h>
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#include "zd_rf.h"
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#include "zd_usb.h"
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#include "zd_chip.h"
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static const u32 rf2959_table[][2] = {
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RF_CHANNEL( 1) = { 0x181979, 0x1e6666 },
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RF_CHANNEL( 2) = { 0x181989, 0x1e6666 },
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RF_CHANNEL( 3) = { 0x181999, 0x1e6666 },
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RF_CHANNEL( 4) = { 0x1819a9, 0x1e6666 },
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RF_CHANNEL( 5) = { 0x1819b9, 0x1e6666 },
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RF_CHANNEL( 6) = { 0x1819c9, 0x1e6666 },
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RF_CHANNEL( 7) = { 0x1819d9, 0x1e6666 },
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RF_CHANNEL( 8) = { 0x1819e9, 0x1e6666 },
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RF_CHANNEL( 9) = { 0x1819f9, 0x1e6666 },
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RF_CHANNEL(10) = { 0x181a09, 0x1e6666 },
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RF_CHANNEL(11) = { 0x181a19, 0x1e6666 },
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RF_CHANNEL(12) = { 0x181a29, 0x1e6666 },
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RF_CHANNEL(13) = { 0x181a39, 0x1e6666 },
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RF_CHANNEL(14) = { 0x181a60, 0x1c0000 },
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};
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#if 0
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static int bits(u32 rw, int from, int to)
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{
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rw &= ~(0xffffffffU << (to+1));
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rw >>= from;
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return rw;
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}
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static int bit(u32 rw, int bit)
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{
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return bits(rw, bit, bit);
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}
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static void dump_regwrite(u32 rw)
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{
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int reg = bits(rw, 18, 22);
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int rw_flag = bits(rw, 23, 23);
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PDEBUG("rf2959 %#010x reg %d rw %d", rw, reg, rw_flag);
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switch (reg) {
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case 0:
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PDEBUG("reg0 CFG1 ref_sel %d hybernate %d rf_vco_reg_en %d"
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" if_vco_reg_en %d if_vga_en %d",
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bits(rw, 14, 15), bit(rw, 3), bit(rw, 2), bit(rw, 1),
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bit(rw, 0));
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break;
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case 1:
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PDEBUG("reg1 IFPLL1 pll_en1 %d kv_en1 %d vtc_en1 %d lpf1 %d"
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" cpl1 %d pdp1 %d autocal_en1 %d ld_en1 %d ifloopr %d"
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" ifloopc %d dac1 %d",
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bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
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bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
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bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0, 3));
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break;
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case 2:
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PDEBUG("reg2 IFPLL2 n1 %d num1 %d",
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bits(rw, 6, 17), bits(rw, 0, 5));
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break;
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case 3:
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PDEBUG("reg3 IFPLL3 num %d", bits(rw, 0, 17));
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break;
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case 4:
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PDEBUG("reg4 IFPLL4 dn1 %#04x ct_def1 %d kv_def1 %d",
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bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
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break;
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case 5:
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PDEBUG("reg5 RFPLL1 pll_en %d kv_en %d vtc_en %d lpf %d cpl %d"
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" pdp %d autocal_en %d ld_en %d rfloopr %d rfloopc %d"
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" dac %d",
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bit(rw, 17), bit(rw, 16), bit(rw, 15), bit(rw, 14),
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bit(rw, 13), bit(rw, 12), bit(rw, 11), bit(rw, 10),
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bits(rw, 7, 9), bits(rw, 4, 6), bits(rw, 0,3));
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break;
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case 6:
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PDEBUG("reg6 RFPLL2 n %d num %d",
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bits(rw, 6, 17), bits(rw, 0, 5));
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break;
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case 7:
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PDEBUG("reg7 RFPLL3 num2 %d", bits(rw, 0, 17));
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break;
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case 8:
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PDEBUG("reg8 RFPLL4 dn %#06x ct_def %d kv_def %d",
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bits(rw, 8, 16), bits(rw, 4, 7), bits(rw, 0, 3));
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break;
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case 9:
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PDEBUG("reg9 CAL1 tvco %d tlock %d m_ct_value %d ld_window %d",
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bits(rw, 13, 17), bits(rw, 8, 12), bits(rw, 3, 7),
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bits(rw, 0, 2));
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break;
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case 10:
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PDEBUG("reg10 TXRX1 rxdcfbbyps %d pcontrol %d txvgc %d"
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" rxlpfbw %d txlpfbw %d txdiffmode %d txenmode %d"
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" intbiasen %d tybypass %d",
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bit(rw, 17), bits(rw, 15, 16), bits(rw, 10, 14),
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bits(rw, 7, 9), bits(rw, 4, 6), bit(rw, 3), bit(rw, 2),
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bit(rw, 1), bit(rw, 0));
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break;
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case 11:
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PDEBUG("reg11 PCNT1 mid_bias %d p_desired %d pc_offset %d"
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" tx_delay %d",
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bits(rw, 15, 17), bits(rw, 9, 14), bits(rw, 3, 8),
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bits(rw, 0, 2));
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break;
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case 12:
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PDEBUG("reg12 PCNT2 max_power %d mid_power %d min_power %d",
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bits(rw, 12, 17), bits(rw, 6, 11), bits(rw, 0, 5));
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break;
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case 13:
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PDEBUG("reg13 VCOT1 rfpll vco comp %d ifpll vco comp %d"
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" lobias %d if_biasbuf %d if_biasvco %d rf_biasbuf %d"
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" rf_biasvco %d",
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bit(rw, 17), bit(rw, 16), bit(rw, 15),
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bits(rw, 8, 9), bits(rw, 5, 7), bits(rw, 3, 4),
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bits(rw, 0, 2));
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break;
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case 14:
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PDEBUG("reg14 IQCAL rx_acal %d rx_pcal %d"
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" tx_acal %d tx_pcal %d",
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bits(rw, 13, 17), bits(rw, 9, 12), bits(rw, 4, 8),
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bits(rw, 0, 3));
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break;
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}
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}
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#endif /* 0 */
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static int rf2959_init_hw(struct zd_rf *rf)
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{
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int r;
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struct zd_chip *chip = zd_rf_to_chip(rf);
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static const struct zd_ioreq16 ioreqs[] = {
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{ CR2, 0x1E }, { CR9, 0x20 }, { CR10, 0x89 },
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{ CR11, 0x00 }, { CR15, 0xD0 }, { CR17, 0x68 },
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{ CR19, 0x4a }, { CR20, 0x0c }, { CR21, 0x0E },
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{ CR23, 0x48 },
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/* normal size for cca threshold */
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{ CR24, 0x14 },
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/* { CR24, 0x20 }, */
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{ CR26, 0x90 }, { CR27, 0x30 }, { CR29, 0x20 },
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{ CR31, 0xb2 }, { CR32, 0x43 }, { CR33, 0x28 },
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{ CR38, 0x30 }, { CR34, 0x0f }, { CR35, 0xF0 },
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{ CR41, 0x2a }, { CR46, 0x7F }, { CR47, 0x1E },
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{ CR51, 0xc5 }, { CR52, 0xc5 }, { CR53, 0xc5 },
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{ CR79, 0x58 }, { CR80, 0x30 }, { CR81, 0x30 },
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{ CR82, 0x00 }, { CR83, 0x24 }, { CR84, 0x04 },
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{ CR85, 0x00 }, { CR86, 0x10 }, { CR87, 0x2A },
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{ CR88, 0x10 }, { CR89, 0x24 }, { CR90, 0x18 },
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/* { CR91, 0x18 }, */
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/* should solve continous CTS frame problems */
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{ CR91, 0x00 },
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{ CR92, 0x0a }, { CR93, 0x00 }, { CR94, 0x01 },
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{ CR95, 0x00 }, { CR96, 0x40 }, { CR97, 0x37 },
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{ CR98, 0x05 }, { CR99, 0x28 }, { CR100, 0x00 },
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{ CR101, 0x13 }, { CR102, 0x27 }, { CR103, 0x27 },
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{ CR104, 0x18 }, { CR105, 0x12 },
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/* normal size */
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{ CR106, 0x1a },
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/* { CR106, 0x22 }, */
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{ CR107, 0x24 }, { CR108, 0x0a }, { CR109, 0x13 },
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{ CR110, 0x2F }, { CR111, 0x27 }, { CR112, 0x27 },
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{ CR113, 0x27 }, { CR114, 0x27 }, { CR115, 0x40 },
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{ CR116, 0x40 }, { CR117, 0xF0 }, { CR118, 0xF0 },
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{ CR119, 0x16 },
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/* no TX continuation */
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{ CR122, 0x00 },
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/* { CR122, 0xff }, */
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{ CR127, 0x03 }, { CR131, 0x08 }, { CR138, 0x28 },
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{ CR148, 0x44 }, { CR150, 0x10 }, { CR169, 0xBB },
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{ CR170, 0xBB },
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};
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static const u32 rv[] = {
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0x000007, /* REG0(CFG1) */
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0x07dd43, /* REG1(IFPLL1) */
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0x080959, /* REG2(IFPLL2) */
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0x0e6666,
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0x116a57, /* REG4 */
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0x17dd43, /* REG5 */
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0x1819f9, /* REG6 */
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0x1e6666,
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0x214554,
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0x25e7fa,
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0x27fffa,
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/* The Zydas driver somehow forgets to set this value. It's
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* only set for Japan. We are using internal power control
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* for now.
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*/
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0x294128, /* internal power */
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/* 0x28252c, */ /* External control TX power */
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/* CR31_CCK, CR51_6-36M, CR52_48M, CR53_54M */
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0x2c0000,
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0x300000,
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0x340000, /* REG13(0xD) */
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0x381e0f, /* REG14(0xE) */
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/* Bogus, RF2959's data sheet doesn't know register 27, which is
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* actually referenced here. The commented 0x11 is 17.
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*/
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0x6c180f, /* REG27(0x11) */
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};
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r = zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
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if (r)
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return r;
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return zd_rfwritev_locked(chip, rv, ARRAY_SIZE(rv), RF_RV_BITS);
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}
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static int rf2959_set_channel(struct zd_rf *rf, u8 channel)
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{
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int i, r;
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const u32 *rv = rf2959_table[channel-1];
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struct zd_chip *chip = zd_rf_to_chip(rf);
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for (i = 0; i < 2; i++) {
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r = zd_rfwrite_locked(chip, rv[i], RF_RV_BITS);
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if (r)
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return r;
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}
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return 0;
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}
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static int rf2959_switch_radio_on(struct zd_rf *rf)
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{
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static const struct zd_ioreq16 ioreqs[] = {
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{ CR10, 0x89 },
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{ CR11, 0x00 },
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};
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struct zd_chip *chip = zd_rf_to_chip(rf);
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return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
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}
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static int rf2959_switch_radio_off(struct zd_rf *rf)
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{
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static const struct zd_ioreq16 ioreqs[] = {
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{ CR10, 0x15 },
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{ CR11, 0x81 },
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};
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struct zd_chip *chip = zd_rf_to_chip(rf);
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return zd_iowrite16a_locked(chip, ioreqs, ARRAY_SIZE(ioreqs));
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}
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int zd_rf_init_rf2959(struct zd_rf *rf)
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{
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struct zd_chip *chip = zd_rf_to_chip(rf);
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if (zd_chip_is_zd1211b(chip)) {
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dev_err(zd_chip_dev(chip),
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"RF2959 is currently not supported for ZD1211B"
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" devices\n");
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return -ENODEV;
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}
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rf->init_hw = rf2959_init_hw;
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rf->set_channel = rf2959_set_channel;
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rf->switch_radio_on = rf2959_switch_radio_on;
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rf->switch_radio_off = rf2959_switch_radio_off;
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return 0;
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}
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