diff options
| author | Henrik Segerback <henrik.xh.segerback@stericsson.com> | 2011-08-19 11:07:39 +0200 |
|---|---|---|
| committer | Philippe Langlais <philippe.langlais@stericsson.com> | 2012-05-22 11:04:55 +0200 |
| commit | 06f5f56dec239179eb41d4702aa3bef52872eba1 (patch) | |
| tree | 441f78082328390c070a8425ba2451556f347364 /sound | |
| parent | 5a7bcb67201fa3e3ed4eed512d6274c0010e5c41 (diff) | |
Ux500 ASoC: Activate gpio.1 clock during playback
During burst mode, the DSP accesses the GPIO block to configure
sleep mode before and after DSP sleeps. To allow this, the GPIO
block must be clocked.
ST-Ericsson Linux next: NA
ST-Ericsson ID: 349519
ST-Ericsson FOSS-OUT ID: Trivial
Change-Id: I625c63fd506316d543e26392d1edb4912193a12c
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/29114
Reviewed-by: Kristoffer KARLSSON <kristoffer.karlsson@stericsson.com>
Tested-by: Kristoffer KARLSSON <kristoffer.karlsson@stericsson.com>
Reviewed-by: QABUILD
Reviewed-by: Jonas ABERG <jonas.aberg@stericsson.com>
Reviewed-by: QATEST
Reviewed-by: Roger NILSSON1 <roger.xr.nilsson@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/30802
Tested-by: Roger NILSSON1 <roger.xr.nilsson@stericsson.com>
Reviewed-by: Henrik SEGERBACK <henrik.xh.segerback@stericsson.com>
Diffstat (limited to 'sound')
| -rw-r--r-- | sound/soc/ux500/ux500_ab8500.c | 19 |
1 files changed, 17 insertions, 2 deletions
diff --git a/sound/soc/ux500/ux500_ab8500.c b/sound/soc/ux500/ux500_ab8500.c index be647daeeed..128820b51cd 100644 --- a/sound/soc/ux500/ux500_ab8500.c +++ b/sound/soc/ux500/ux500_ab8500.c @@ -56,6 +56,7 @@ static struct clk *clk_ptr_audioclk; static struct clk *clk_ptr_intclk; static struct clk *clk_ptr_sysclk; static struct clk *clk_ptr_ulpclk; +static struct clk *clk_ptr_gpio1; /* Regulators */ static enum regulator_idx { @@ -306,9 +307,14 @@ int ux500_ab8500_startup(struct snd_pcm_substream *substream) return ret; } - return ux500_ab8500_power_control_inc(); + /* Enable gpio.1-clock (needed by DSP in burst mode) */ + ret = clk_enable(clk_ptr_gpio1); + if (ret) { + pr_err("%s: ERROR: clk_enable(gpio.1) failed (ret = %d)!", __func__, ret); + return ret; + } - return ret; + return ux500_ab8500_power_control_inc(); } void ux500_ab8500_shutdown(struct snd_pcm_substream *substream) @@ -328,6 +334,7 @@ void ux500_ab8500_shutdown(struct snd_pcm_substream *substream) disable_regulator(REGULATOR_AMIC2); } + clk_disable(clk_ptr_gpio1); ux500_ab8500_power_control_dec(); } @@ -481,6 +488,7 @@ int ux500_ab8500_machine_codec_init(struct snd_soc_pcm_runtime *rtd) clk_ptr_ulpclk = NULL; clk_ptr_intclk = NULL; clk_ptr_audioclk = NULL; + clk_ptr_gpio1 = NULL; clk_ptr_sysclk = clk_get(codec->dev, "sysclk"); if (IS_ERR(clk_ptr_sysclk)) { pr_err("ERROR: clk_get failed (ret = %d)!", -EFAULT); @@ -501,6 +509,11 @@ int ux500_ab8500_machine_codec_init(struct snd_soc_pcm_runtime *rtd) pr_err("ERROR: clk_get failed (ret = %d)!", -EFAULT); return -EFAULT; } + clk_ptr_gpio1 = clk_get_sys("gpio.1", NULL); + if (IS_ERR(clk_ptr_gpio1)) { + pr_err("ERROR: clk_get_sys(gpio.1) failed (ret = %d)!", -EFAULT); + return -EFAULT; + } /* Set intclk default parent to ulpclk */ ret = clk_set_parent(clk_ptr_intclk, clk_ptr_ulpclk); @@ -548,6 +561,8 @@ void ux500_ab8500_soc_machine_drv_cleanup(void) clk_put(clk_ptr_intclk); if (clk_ptr_audioclk != NULL) clk_put(clk_ptr_audioclk); + if (clk_ptr_gpio1 != NULL) + clk_put(clk_ptr_gpio1); } /* Extended interface */ |