diff options
Diffstat (limited to 'target/linux/layerscape/patches-5.4/801-audio-0055-MLK-18898-1-ASoC-fsl_sai-select-pinctrl-state-as-fun.patch')
| -rw-r--r-- | target/linux/layerscape/patches-5.4/801-audio-0055-MLK-18898-1-ASoC-fsl_sai-select-pinctrl-state-as-fun.patch | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/target/linux/layerscape/patches-5.4/801-audio-0055-MLK-18898-1-ASoC-fsl_sai-select-pinctrl-state-as-fun.patch b/target/linux/layerscape/patches-5.4/801-audio-0055-MLK-18898-1-ASoC-fsl_sai-select-pinctrl-state-as-fun.patch new file mode 100644 index 0000000000..2912d7632d --- /dev/null +++ b/target/linux/layerscape/patches-5.4/801-audio-0055-MLK-18898-1-ASoC-fsl_sai-select-pinctrl-state-as-fun.patch @@ -0,0 +1,100 @@ +From 001937cc21a05165530c0775c4646bd04e797658 Mon Sep 17 00:00:00 2001 +From: Viorel Suman <viorel.suman@nxp.com> +Date: Mon, 27 Aug 2018 13:50:17 +0300 +Subject: [PATCH] MLK-18898-1: ASoC: fsl_sai: select pinctrl state as function + of bitclock rate + +Similar to DSD512 case we need a PCM pinctrl state option to map SAI BCLK +to codec MCLK pin. Given that bitclock rate is function of slots number and +slot width - pass bclk rate as parameter value from SAI driver. + +Signed-off-by: Viorel Suman <viorel.suman@nxp.com> +(cherry picked from commit 826caeae32713cff7ad50de8ebc9915de975edd9) +--- + sound/soc/fsl/fsl_dsd.h | 15 +++++++-------- + sound/soc/fsl/fsl_sai.c | 24 ++++++++++-------------- + 2 files changed, 17 insertions(+), 22 deletions(-) + +--- a/sound/soc/fsl/fsl_dsd.h ++++ b/sound/soc/fsl/fsl_dsd.h +@@ -30,23 +30,22 @@ static bool fsl_is_dsd(struct snd_pcm_hw + } + + static struct pinctrl_state *fsl_get_pins_state(struct pinctrl *pinctrl, +- struct snd_pcm_hw_params *params) ++ struct snd_pcm_hw_params *params, u32 bclk) + { +- int dsd_bclk; + struct pinctrl_state *state = 0; + + if (fsl_is_dsd(params)) { +- dsd_bclk = params_rate(params) * params_physical_width(params); +- +- switch (dsd_bclk) { +- case 22579200: /* DSD512 */ ++ /* DSD512@44.1kHz, DSD512@48kHz */ ++ if (bclk >= 22579200) + state = pinctrl_lookup_state(pinctrl, "dsd512"); +- break; +- } + + /* Get default DSD state */ + if (IS_ERR_OR_NULL(state)) + state = pinctrl_lookup_state(pinctrl, "dsd"); ++ } else { ++ /* 706k32b2c, 768k32b2c, etc */ ++ if (bclk >= 45158400) ++ state = pinctrl_lookup_state(pinctrl, "pcm_b2m"); + } + + /* Get default state */ +--- a/sound/soc/fsl/fsl_sai.c ++++ b/sound/soc/fsl/fsl_sai.c +@@ -620,7 +620,7 @@ static int fsl_sai_hw_params(struct snd_ + u32 val_cr4 = 0, val_cr5 = 0; + u32 slots = (channels == 1) ? 2 : channels; + u32 slot_width = word_width; +- u32 pins; ++ u32 pins, bclk; + int ret; + int i; + int trce_mask = 0; +@@ -630,9 +630,16 @@ static int fsl_sai_hw_params(struct snd_ + + pins = DIV_ROUND_UP(channels, slots); + sai->is_dsd = fsl_is_dsd(params); ++ if (sai->is_dsd) ++ pins = channels; ++ ++ if (sai->slot_width) ++ slot_width = sai->slot_width; ++ ++ bclk = rate*(sai->bitclk_ratio ? sai->bitclk_ratio : slots * slot_width); + + if (!IS_ERR_OR_NULL(sai->pinctrl)) { +- sai->pins_state = fsl_get_pins_state(sai->pinctrl, params); ++ sai->pins_state = fsl_get_pins_state(sai->pinctrl, params, bclk); + + if (!IS_ERR_OR_NULL(sai->pins_state)) { + ret = pinctrl_select_state(sai->pinctrl, sai->pins_state); +@@ -644,19 +651,8 @@ static int fsl_sai_hw_params(struct snd_ + } + } + +- if (sai->is_dsd) +- pins = channels; +- +- if (sai->slot_width) +- slot_width = sai->slot_width; +- + if (!sai->slave_mode[tx]) { +- if (sai->bitclk_ratio) +- ret = fsl_sai_set_bclk(cpu_dai, tx, +- rate * sai->bitclk_ratio); +- else +- ret = fsl_sai_set_bclk(cpu_dai, tx, +- rate * slots * slot_width); ++ ret = fsl_sai_set_bclk(cpu_dai, tx, bclk); + if (ret) + return ret; + |