This patch fixes a clock related audio hub driver lock-up observed when booting with mainline U-Boot which we are in the process of migrating to now.
Newer eMMC standards use CMD23 for multi-block transfer. These command has the advantage that only one command is necessary, no stop command after the transfer is required. The kernel already supports this command, but we need to enable the capability on the host level. Tests verified that the MMC code detects that SD-card do not support CMD23 and hence don't use that command.
While in list_for_each_entry() of yaffs_flush_inodes, the fs code can delete inodes. This leads to an endless loop which causes a softlockup. Typically this happend in sync_supers when creating and deleting files while under CPU load. This fix checks whether we get twice the same inode. If this is true, we just retry again. This is an alternative fix to the proposed fix Jisheng Zhang: yaffs: fix softlockup cauesed by inode deleted when scanning s_inodes list http://www.aleph1.co.uk/lurker/message/20110831.075307.3cfeacdf.fr.html
The fsync function in the fs.h header file in our kernel version has two additional function introduced by this commit: 02c24a82187d5a628c68edfe71ae60dc135cd178 fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers Update the function prototype for YAFFS2 too to avoid missinterpreted datasync parameter and to avoid warnings.
Since commit e5d80e82e32e (ASoC: sgtl5000: Convert to use regmap directly) a kernel oops is observed after a suspend/resume sequence. The kernel oops happens inside sgtl5000_restore_regs() as codec->reg_cache is no longer a valid pointer. Add the remaining register entries into sgtl5000_reg_defaults[] and remove sgtl5000_restore_regs() completely, which allows suspend/resume to work fine and make the code simpler. Tested on a im53-qsb board. Reported-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Tested-by: Shawn Guo <shawn.guo@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> (cherry picked from commit 29aa37cddfb9b721013ff28608200d73a9426368)
Powering down PLL before switching to a mode that does not use it is a bad idea. It would cause the SGTL5000 be without internal clock supply, especially on the I2C interface, which would make subsequent access to it fail. Thus, in case of not using PLL any longer, first set the mode control, then power down PLL. Signed-off-by: Oskar Schirmer <oskar@scara.com> Signed-off-by: Mark Brown <broonie@linaro.org> (cherry picked from commit e06e4c2d530fd4995c41083009647263ccd77d3b)
The SGTL5000 Capture Attenuate Switch (or "ADC Volume Range Reduction" as it is called in the manual) is single bit only. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> (cherry picked from commit 65f2b226763bc348a9b9145aa5e17e7e3f6d8c35)
When a sound capture/playback is terminated while a playback/capture is running, power_vag_event() will clear SGTL5000_CHIP_ANA_POWER in the SND_SOC_DAPM_PRE_PMD event, thus muting the respective other channel. Don't clear SGTL5000_CHIP_ANA_POWER when both DAC and ADC are active to prevent this. Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de> Reviewed-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> (cherry picked from commit f091f3f07328f75d20a2a5970d1f8b58d95fc990)
According to the sgtl5000 reference manual, the default value of CHIP_SSS_CTRL is 0x10. Reported-by: Oskar Schirmer <oskar@scara.com> Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com> Signed-off-by: Mark Brown <broonie@linaro.org> Cc: stable@vger.kernel.org (cherry picked from commit 016fcab8ff46fca29375d484226ec91932aa4a07)