diff options
Diffstat (limited to 'sound/soc/codecs/rt5640.c')
| -rw-r--r-- | sound/soc/codecs/rt5640.c | 113 |
1 files changed, 17 insertions, 96 deletions
diff --git a/sound/soc/codecs/rt5640.c b/sound/soc/codecs/rt5640.c index ddefd5a..de80e89 100644 --- a/sound/soc/codecs/rt5640.c +++ b/sound/soc/codecs/rt5640.c @@ -18,6 +18,7 @@ #include <linux/gpio.h> #include <linux/i2c.h> #include <linux/regmap.h> +#include <linux/of.h> #include <linux/of_gpio.h> #include <linux/platform_device.h> #include <linux/spi/spi.h> @@ -30,6 +31,7 @@ #include <sound/initval.h> #include <sound/tlv.h> +#include "rl6231.h" #include "rt5640.h" #define RT5640_DEVICE_ID 0x6231 @@ -452,30 +454,16 @@ static const struct snd_kcontrol_new rt5640_specific_snd_controls[] = { * @kcontrol: The kcontrol of this widget. * @event: Event id. * - * Choose dmic clock between 1MHz and 3MHz. - * It is better for clock to approximate 3MHz. */ static int set_dmic_clk(struct snd_soc_dapm_widget *w, struct snd_kcontrol *kcontrol, int event) { struct snd_soc_codec *codec = w->codec; struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec); - int div[] = {2, 3, 4, 6, 8, 12}; - int idx = -EINVAL, i; - int rate, red, bound, temp; - - rate = rt5640->sysclk; - red = 3000000 * 12; - for (i = 0; i < ARRAY_SIZE(div); i++) { - bound = div[i] * 3000000; - if (rate > bound) - continue; - temp = bound - rate; - if (temp < red) { - red = temp; - idx = i; - } - } + int idx = -EINVAL; + + idx = rl6231_calc_dmic_clk(rt5640->sysclk); + if (idx < 0) dev_err(codec->dev, "Failed to set DMIC clock\n"); else @@ -873,7 +861,7 @@ static SOC_VALUE_ENUM_SINGLE_DECL(rt5640_dac_l2_enum, 0x3, rt5640_dac_l2_src, rt5640_dac_l2_values); static const struct snd_kcontrol_new rt5640_dac_l2_mux = - SOC_DAPM_VALUE_ENUM("DAC2 left channel source", rt5640_dac_l2_enum); + SOC_DAPM_ENUM("DAC2 left channel source", rt5640_dac_l2_enum); static const char * const rt5640_dac_r2_src[] = { "IF2", @@ -908,7 +896,7 @@ static SOC_VALUE_ENUM_SINGLE_DECL(rt5640_dai_iis_map_enum, rt5640_dai_iis_map_values); static const struct snd_kcontrol_new rt5640_dai_mux = - SOC_DAPM_VALUE_ENUM("DAI select", rt5640_dai_iis_map_enum); + SOC_DAPM_ENUM("DAI select", rt5640_dai_iis_map_enum); /* SDI select */ static const char * const rt5640_sdi_sel[] = { @@ -1638,21 +1626,6 @@ static int get_sdp_info(struct snd_soc_codec *codec, int dai_id) return ret; } -static int get_clk_info(int sclk, int rate) -{ - int i, pd[] = {1, 2, 3, 4, 6, 8, 12, 16}; - - if (sclk <= 0 || rate <= 0) - return -EINVAL; - - rate = rate << 8; - for (i = 0; i < ARRAY_SIZE(pd); i++) - if (sclk == rate * pd[i]) - return i; - - return -EINVAL; -} - static int rt5640_hw_params(struct snd_pcm_substream *substream, struct snd_pcm_hw_params *params, struct snd_soc_dai *dai) { @@ -1662,7 +1635,7 @@ static int rt5640_hw_params(struct snd_pcm_substream *substream, int dai_sel, pre_div, bclk_ms, frame_size; rt5640->lrck[dai->id] = params_rate(params); - pre_div = get_clk_info(rt5640->sysclk, rt5640->lrck[dai->id]); + pre_div = rl6231_get_clk_info(rt5640->sysclk, rt5640->lrck[dai->id]); if (pre_div < 0) { dev_err(codec->dev, "Unsupported clock setting %d for DAI %d\n", rt5640->lrck[dai->id], dai->id); @@ -1819,65 +1792,12 @@ static int rt5640_set_dai_sysclk(struct snd_soc_dai *dai, return 0; } -/** - * rt5640_pll_calc - Calculate PLL M/N/K code. - * @freq_in: external clock provided to codec. - * @freq_out: target clock which codec works on. - * @pll_code: Pointer to structure with M, N, K and bypass flag. - * - * Calculate M/N/K code to configure PLL for codec. And K is assigned to 2 - * which make calculation more efficiently. - * - * Returns 0 for success or negative error code. - */ -static int rt5640_pll_calc(const unsigned int freq_in, - const unsigned int freq_out, struct rt5640_pll_code *pll_code) -{ - int max_n = RT5640_PLL_N_MAX, max_m = RT5640_PLL_M_MAX; - int n = 0, m = 0, red, n_t, m_t, in_t, out_t; - int red_t = abs(freq_out - freq_in); - bool bypass = false; - - if (RT5640_PLL_INP_MAX < freq_in || RT5640_PLL_INP_MIN > freq_in) - return -EINVAL; - - for (n_t = 0; n_t <= max_n; n_t++) { - in_t = (freq_in >> 1) + (freq_in >> 2) * n_t; - if (in_t < 0) - continue; - if (in_t == freq_out) { - bypass = true; - n = n_t; - goto code_find; - } - for (m_t = 0; m_t <= max_m; m_t++) { - out_t = in_t / (m_t + 2); - red = abs(out_t - freq_out); - if (red < red_t) { - n = n_t; - m = m_t; - if (red == 0) - goto code_find; - red_t = red; - } - } - } - pr_debug("Only get approximation about PLL\n"); - -code_find: - pll_code->m_bp = bypass; - pll_code->m_code = m; - pll_code->n_code = n; - pll_code->k_code = 2; - return 0; -} - static int rt5640_set_dai_pll(struct snd_soc_dai *dai, int pll_id, int source, unsigned int freq_in, unsigned int freq_out) { struct snd_soc_codec *codec = dai->codec; struct rt5640_priv *rt5640 = snd_soc_codec_get_drvdata(codec); - struct rt5640_pll_code *pll_code = &rt5640->pll_code; + struct rl6231_pll_code pll_code; int ret, dai_sel; if (source == rt5640->pll_src && freq_in == rt5640->pll_in && @@ -1921,20 +1841,21 @@ static int rt5640_set_dai_pll(struct snd_soc_dai *dai, int pll_id, int source, return -EINVAL; } - ret = rt5640_pll_calc(freq_in, freq_out, pll_code); + ret = rl6231_pll_calc(freq_in, freq_out, &pll_code); if (ret < 0) { dev_err(codec->dev, "Unsupport input clock %d\n", freq_in); return ret; } - dev_dbg(codec->dev, "bypass=%d m=%d n=%d k=2\n", pll_code->m_bp, - (pll_code->m_bp ? 0 : pll_code->m_code), pll_code->n_code); + dev_dbg(codec->dev, "bypass=%d m=%d n=%d k=%d\n", + pll_code.m_bp, (pll_code.m_bp ? 0 : pll_code.m_code), + pll_code.n_code, pll_code.k_code); snd_soc_write(codec, RT5640_PLL_CTRL1, - pll_code->n_code << RT5640_PLL_N_SFT | pll_code->k_code); + pll_code.n_code << RT5640_PLL_N_SFT | pll_code.k_code); snd_soc_write(codec, RT5640_PLL_CTRL2, - (pll_code->m_bp ? 0 : pll_code->m_code) << RT5640_PLL_M_SFT | - pll_code->m_bp << RT5640_PLL_M_BP_SFT); + (pll_code.m_bp ? 0 : pll_code.m_code) << RT5640_PLL_M_SFT | + pll_code.m_bp << RT5640_PLL_M_BP_SFT); rt5640->pll_in = freq_in; rt5640->pll_out = freq_out; |
