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authorGrazvydas Ignotas <notasas@gmail.com>2010-06-08 14:33:31 +0300
committerJohn W. Linville <linville@tuxdriver.com>2010-06-08 09:31:21 -0400
commit832c10fd733893f86c63bde1c65b005d5a2fe346 (patch)
tree4c46420f7a8ac9f0261205383489dea4b042d91c /include/linux
parentabe37c4b84502d6931e04e94c9c2c45b4da8c889 (diff)
wl1251: fix ELP_CTRL register reads
Reading the ELP_CTRL register with sdio_readb causes problems because hardware seems to be performing a write using stuff bits in the request (those bits contain write data in write request). This indicates that it actually expects RAW (read after write) type of request, so perform that when reading ELP_CTRL instead. Also cache last written value so we know what to write when doing RAW request. Because of the above it was not possible to wake the chip from ELP power saving mode, PM had to be disabled to have the driver usable in SDIO mode. After this patch PM is functional. For backporting to 2.6.34 or earlier, this patch depends on 6c1f716e8154ee9315534782b9b1eedea0559a24, which adds the required SDIO funcion. Signed-off-by: Grazvydas Ignotas <notasas@gmail.com> Acked-by: Kalle Valo <kvalo@adurom.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions