There are two APIs for setting clocks: the old one that uses AFE_PARAM_ID_INT_DIGITAL_CDC_CLK_CONFIG and AFE_PARAM_ID_LPAIF_CLK_CONFIG, and the new one which uses AFE_PARAM_ID_CLOCK_SET.
ADSP firmware version 2.6 only provides the old API, while newer firmware versions only provide the new API.
Implement LPAIF_BIT_CLK and LPAIF_DIG_CLK for both APIs so that users don't have to care about the firmware version. Also fall back to setting AFE_PARAM_ID_INT_DIGITAL_CDC_CLK_CONFIG in q6afe_set_lpass_clock when setting the new Q6AFE_LPASS_CLK_ID_INTERNAL_DIGITAL_CODEC_CORE clock is requested to allow specifying it in the device tree on older platforms too.
Signed-off-by: Otto Pflüger otto.pflueger@abscue.de --- sound/soc/qcom/qdsp6/q6afe.c | 81 ++++++++++++++++++++++++++++++++++++ 1 file changed, 81 insertions(+)
diff --git a/sound/soc/qcom/qdsp6/q6afe.c b/sound/soc/qcom/qdsp6/q6afe.c index 91d39f6ad0bd..87bdf741e5f6 100644 --- a/sound/soc/qcom/qdsp6/q6afe.c +++ b/sound/soc/qcom/qdsp6/q6afe.c @@ -1111,6 +1111,32 @@ int q6afe_set_lpass_clock(struct device *dev, int clk_id, int attri, struct q6afe *afe = dev_get_drvdata(dev->parent); struct afe_clk_set cset = {0,};
+ /* + * v2 clocks specified in the device tree may not be supported by the + * firmware. If this is the digital codec core clock, fall back to the + * old method for setting it. + */ + if (q6core_get_adsp_version() < Q6_ADSP_VERSION_2_7) { + struct q6afe_port *port; + struct afe_digital_clk_cfg dcfg = {0,}; + int ret; + + if (clk_id != Q6AFE_LPASS_CLK_ID_INTERNAL_DIGITAL_CODEC_CORE) + return -EINVAL; + + port = q6afe_port_get_from_id(dev, PRIMARY_MI2S_RX); + if (IS_ERR(port)) + return PTR_ERR(port); + + dcfg.i2s_cfg_minor_version = AFE_API_VERSION_I2S_CONFIG; + dcfg.clk_val = freq; + dcfg.clk_root = 5; + ret = q6afe_set_digital_codec_core_clock(port, &dcfg); + + q6afe_port_put(port); + return ret; + } + cset.clk_set_minor_version = AFE_API_VERSION_CLOCK_SET; cset.clk_id = clk_id; cset.clk_freq_in_hz = freq; @@ -1124,6 +1150,41 @@ int q6afe_set_lpass_clock(struct device *dev, int clk_id, int attri, } EXPORT_SYMBOL_GPL(q6afe_set_lpass_clock);
+static int q6afe_get_v2_bit_clk_id(struct q6afe_port *port) +{ + switch (port->id) { + case AFE_PORT_ID_PRIMARY_MI2S_RX: + case AFE_PORT_ID_PRIMARY_MI2S_TX: + return Q6AFE_LPASS_CLK_ID_PRI_MI2S_IBIT; + case AFE_PORT_ID_SECONDARY_MI2S_RX: + case AFE_PORT_ID_SECONDARY_MI2S_TX: + return Q6AFE_LPASS_CLK_ID_SEC_MI2S_IBIT; + case AFE_PORT_ID_TERTIARY_MI2S_RX: + case AFE_PORT_ID_TERTIARY_MI2S_TX: + return Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT; + case AFE_PORT_ID_QUATERNARY_MI2S_RX: + case AFE_PORT_ID_QUATERNARY_MI2S_TX: + return Q6AFE_LPASS_CLK_ID_TER_MI2S_IBIT; + case AFE_PORT_ID_QUINARY_MI2S_RX: + case AFE_PORT_ID_QUINARY_MI2S_TX: + return Q6AFE_LPASS_CLK_ID_QUI_MI2S_IBIT; + + case AFE_PORT_ID_PRIMARY_TDM_RX ... AFE_PORT_ID_PRIMARY_TDM_TX_7: + return Q6AFE_LPASS_CLK_ID_PRI_TDM_IBIT; + case AFE_PORT_ID_SECONDARY_TDM_RX ... AFE_PORT_ID_SECONDARY_TDM_TX_7: + return Q6AFE_LPASS_CLK_ID_SEC_TDM_IBIT; + case AFE_PORT_ID_TERTIARY_TDM_RX ... AFE_PORT_ID_TERTIARY_TDM_TX_7: + return Q6AFE_LPASS_CLK_ID_TER_TDM_IBIT; + case AFE_PORT_ID_QUATERNARY_TDM_RX ... AFE_PORT_ID_QUATERNARY_TDM_TX_7: + return Q6AFE_LPASS_CLK_ID_QUAD_TDM_IBIT; + case AFE_PORT_ID_QUINARY_TDM_RX ... AFE_PORT_ID_QUINARY_TDM_TX_7: + return Q6AFE_LPASS_CLK_ID_QUIN_TDM_IBIT; + + default: + return -EINVAL; + } +} + int q6afe_port_set_sysclk(struct q6afe_port *port, int clk_id, int clk_src, int clk_root, unsigned int freq, int dir) @@ -1133,6 +1194,26 @@ int q6afe_port_set_sysclk(struct q6afe_port *port, int clk_id, struct afe_digital_clk_cfg dcfg = {0,}; int ret;
+ if (q6core_get_adsp_version() >= Q6_ADSP_VERSION_2_7) { + /* Always use the new clock API on newer platforms. */ + switch (clk_id) { + case LPAIF_DIG_CLK: + clk_src = Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO; + clk_root = Q6AFE_LPASS_CLK_ROOT_DEFAULT; + clk_id = Q6AFE_LPASS_CLK_ID_INTERNAL_DIGITAL_CODEC_CORE; + break; + case LPAIF_BIT_CLK: + clk_src = Q6AFE_LPASS_CLK_ATTRIBUTE_COUPLE_NO; + clk_root = Q6AFE_LPASS_CLK_ROOT_DEFAULT; + clk_id = q6afe_get_v2_bit_clk_id(port); + if (clk_id < 0) + return clk_id; + break; + default: + break; + } + } + switch (clk_id) { case LPAIF_DIG_CLK: dcfg.i2s_cfg_minor_version = AFE_API_VERSION_I2S_CONFIG;