From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Subject: [PATCH 2/3] mfd: mc13xxx: Move SPI erratum workaround into SPI I/O function Date: Wed, 18 Sep 2013 19:06:26 +0100 Message-ID: <1379527587-14567-2-git-send-email-broonie@kernel.org> References: <1379527587-14567-1-git-send-email-broonie@kernel.org> Return-path: In-Reply-To: <1379527587-14567-1-git-send-email-broonie@kernel.org> Sender: linux-kernel-owner@vger.kernel.org To: Lee Jones , Samuel Ortiz , Liam Girdwood , Marc Reilly , u.kleine-koenig@pengutronix.de Cc: linux-kernel@vger.kernel.org, alsa-devel@alsa-project.org, linaro-kernel@lists.linaro.org, Mark Brown List-Id: alsa-devel@alsa-project.org From: Mark Brown Move the workaround for double sending AUDIO_CODEC and AUDIO_DAC writes into the SPI core, aiding refactoring to eliminate the ASoC custom I/O functions and avoiding the extra writes for I2C. Signed-off-by: Mark Brown --- drivers/mfd/mc13xxx-spi.c | 5 +++++ include/linux/mfd/mc13xxx.h | 7 +++++++ sound/soc/codecs/mc13783.c | 4 ---- 3 files changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/mfd/mc13xxx-spi.c b/drivers/mfd/mc13xxx-spi.c index 77189da..363c359 100644 --- a/drivers/mfd/mc13xxx-spi.c +++ b/drivers/mfd/mc13xxx-spi.c @@ -94,10 +94,15 @@ static int mc13xxx_spi_write(void *context, const void *data, size_t count) { struct device *dev = context; struct spi_device *spi = to_spi_device(dev); + char *reg = data; if (count != 4) return -ENOTSUPP; + /* include errata fix for spi audio problems */ + if (*reg == MC13783_AUDIO_CODEC || *reg == MC13783_AUDIO_DAC) + spi_write(spi, data, count); + return spi_write(spi, data, count); } diff --git a/include/linux/mfd/mc13xxx.h b/include/linux/mfd/mc13xxx.h index 41ed592..67c17b5 100644 --- a/include/linux/mfd/mc13xxx.h +++ b/include/linux/mfd/mc13xxx.h @@ -41,6 +41,13 @@ int mc13xxx_adc_do_conversion(struct mc13xxx *mc13xxx, unsigned int mode, unsigned int channel, u8 ato, bool atox, unsigned int *sample); +#define MC13783_AUDIO_RX0 36 +#define MC13783_AUDIO_RX1 37 +#define MC13783_AUDIO_TX 38 +#define MC13783_SSI_NETWORK 39 +#define MC13783_AUDIO_CODEC 40 +#define MC13783_AUDIO_DAC 41 + #define MC13XXX_IRQ_ADCDONE 0 #define MC13XXX_IRQ_ADCBISDONE 1 #define MC13XXX_IRQ_TS 2 diff --git a/sound/soc/codecs/mc13783.c b/sound/soc/codecs/mc13783.c index ea141e1..4d3c8fd 100644 --- a/sound/soc/codecs/mc13783.c +++ b/sound/soc/codecs/mc13783.c @@ -125,10 +125,6 @@ static int mc13783_write(struct snd_soc_codec *codec, ret = mc13xxx_reg_write(priv->mc13xxx, reg, value); - /* include errata fix for spi audio problems */ - if (reg == MC13783_AUDIO_CODEC || reg == MC13783_AUDIO_DAC) - ret = mc13xxx_reg_write(priv->mc13xxx, reg, value); - mc13xxx_unlock(priv->mc13xxx); return ret; -- 1.8.4.rc3