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Message-ID: <CAEKpxB=JY74dqwv2zuNw5R=1KWwVNKgJfFDm1Zd-q9gD0YKFFQ@mail.gmail.com>
Date: Wed, 5 Jul 2017 19:49:18 +0200
From: Code Kipper <codekipper@...il.com>
To: Maxime Ripard <maxime.ripard@...e-electrons.com>
Cc: linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
linux-sunxi <linux-sunxi@...glegroups.com>,
Liam Girdwood <lgirdwood@...il.com>,
Mark Brown <broonie@...nel.org>, linux-kernel@...r.kernel.org,
alsa-devel@...a-project.org,
"Andrea Venturi (pers)" <be17068@...rbole.bo.it>
Subject: Re: [PATCH 3/3] ASoC: sun4i-i2s: Add support for H3
On 5 July 2017 at 18:20, Maxime Ripard <maxime.ripard@...e-electrons.com> wrote:
> On Wed, Jul 05, 2017 at 05:43:24PM +0200, codekipper@...il.com wrote:
>> From: Marcus Cooper <codekipper@...il.com>
>>
>> There are a lot of changes to the sun8i-h3 i2s block but not enough
>> to warrant to a new driver.
>>
>> Signed-off-by: Marcus Cooper <codekipper@...il.com>
>> ---
>> .../devicetree/bindings/sound/sun4i-i2s.txt | 2 +
>> sound/soc/sunxi/sun4i-i2s.c | 339 ++++++++++++++++++++-
>> 2 files changed, 337 insertions(+), 4 deletions(-)
>>
>> diff --git a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
>> index ee21da865771..fc5da6080759 100644
>> --- a/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
>> +++ b/Documentation/devicetree/bindings/sound/sun4i-i2s.txt
>> @@ -8,6 +8,7 @@ Required properties:
>> - compatible: should be one of the following:
>> - "allwinner,sun4i-a10-i2s"
>> - "allwinner,sun6i-a31-i2s"
>> + - "allwinner,sun8i-h3-i2s"
>> - reg: physical base address of the controller and length of memory mapped
>> region.
>> - interrupts: should contain the I2S interrupt.
>> @@ -22,6 +23,7 @@ Required properties:
>>
>> Required properties for the following compatibles:
>> - "allwinner,sun6i-a31-i2s"
>> + - "allwinner,sun8i-h3-i2s"
>> - resets: phandle to the reset line for this codec
>>
>> Example:
>> diff --git a/sound/soc/sunxi/sun4i-i2s.c b/sound/soc/sunxi/sun4i-i2s.c
>> index bb7affd53002..0b853fe320e0 100644
>> --- a/sound/soc/sunxi/sun4i-i2s.c
>> +++ b/sound/soc/sunxi/sun4i-i2s.c
>> @@ -26,9 +26,16 @@
>> #include <sound/soc-dai.h>
>>
>> #define SUN4I_I2S_CTRL_REG 0x00
>> +#define SUN4I_I2S_CTRL_BCLK_OUT BIT(18)
>> +#define SUN4I_I2S_CTRL_LRCK_OUT BIT(17)
>> +#define SUN4I_I2S_CTRL_LRCKR_OUT BIT(16)
>> #define SUN4I_I2S_CTRL_SDO_EN_MASK GENMASK(11, 8)
>> #define SUN4I_I2S_CTRL_SDO_EN(sdo) BIT(8 + (sdo))
>> #define SUN4I_I2S_CTRL_MODE_MASK BIT(5)
>> +#define SUN8I_I2S_CTRL_MODE_MASK GENMASK(5, 4)
>> +#define SUN8I_I2S_CTRL_MODE_RIGHT_J (2 << 4)
>> +#define SUN8I_I2S_CTRL_MODE_I2S (1 << 4)
>> +#define SUN8I_I2S_CTRL_MODE_PCM (0 << 4)
>> #define SUN4I_I2S_CTRL_MODE_SLAVE (1 << 5)
>> #define SUN4I_I2S_CTRL_MODE_MASTER (0 << 5)
>> #define SUN4I_I2S_CTRL_TX_EN BIT(2)
>> @@ -36,16 +43,27 @@
>> #define SUN4I_I2S_CTRL_GL_EN BIT(0)
>>
>> #define SUN4I_I2S_FMT0_REG 0x04
>> +#define SUN8I_I2S_FMT0_LRCLK_POLARITY_MASK BIT(19)
>> +#define SUN8I_I2S_FMT0_LRCLK_POLARITY_INVERTED (1 << 19)
>> +#define SUN8I_I2S_FMT0_LRCLK_POLARITY_NORMAL (0 << 19)
>> +#define SUN8I_I2S_FMT0_LRCK_PERIOD_MASK GENMASK(17, 8)
>> +#define SUN8I_I2S_FMT0_LRCK_PERIOD(period) ((period) << 8)
>> #define SUN4I_I2S_FMT0_LRCLK_POLARITY_MASK BIT(7)
>> #define SUN4I_I2S_FMT0_LRCLK_POLARITY_INVERTED (1 << 7)
>> #define SUN4I_I2S_FMT0_LRCLK_POLARITY_NORMAL (0 << 7)
>> +#define SUN8I_I2S_FMT0_BCLK_POLARITY_MASK BIT(7)
>> +#define SUN8I_I2S_FMT0_BCLK_POLARITY_INVERTED (1 << 7)
>> +#define SUN8I_I2S_FMT0_BCLK_POLARITY_NORMAL (0 << 7)
>> #define SUN4I_I2S_FMT0_BCLK_POLARITY_MASK BIT(6)
>> #define SUN4I_I2S_FMT0_BCLK_POLARITY_INVERTED (1 << 6)
>> #define SUN4I_I2S_FMT0_BCLK_POLARITY_NORMAL (0 << 6)
>> #define SUN4I_I2S_FMT0_SR_MASK GENMASK(5, 4)
>> +#define SUN8I_I2S_FMT0_SR_MASK GENMASK(6, 4)
>> #define SUN4I_I2S_FMT0_SR(sr) ((sr) << 4)
>> #define SUN4I_I2S_FMT0_WSS_MASK GENMASK(3, 2)
>> #define SUN4I_I2S_FMT0_WSS(wss) ((wss) << 2)
>> +#define SUN8I_I2S_FMT0_WSS_MASK GENMASK(2, 0)
>> +#define SUN8I_I2S_FMT0_WSS(wss) (wss)
>> #define SUN4I_I2S_FMT0_FMT_MASK GENMASK(1, 0)
>> #define SUN4I_I2S_FMT0_FMT_RIGHT_J (2 << 0)
>> #define SUN4I_I2S_FMT0_FMT_LEFT_J (1 << 0)
>> @@ -53,6 +71,7 @@
>>
>> #define SUN4I_I2S_FMT1_REG 0x08
>> #define SUN4I_I2S_FIFO_TX_REG 0x0c
>> +#define SUN8I_I2S_INT_STA_REG 0x0c
>> #define SUN4I_I2S_FIFO_RX_REG 0x10
>>
>> #define SUN4I_I2S_FIFO_CTRL_REG 0x14
>> @@ -70,10 +89,13 @@
>> #define SUN4I_I2S_DMA_INT_CTRL_RX_DRQ_EN BIT(3)
>>
>> #define SUN4I_I2S_INT_STA_REG 0x20
>> +#define SUN8I_I2S_FIFO_TX_REG 0x20
>>
>> #define SUN4I_I2S_CLK_DIV_REG 0x24
>> +#define SUN8I_I2S_CLK_DIV_MCLK_EN BIT(8)
>> #define SUN4I_I2S_CLK_DIV_MCLK_EN BIT(7)
>> #define SUN4I_I2S_CLK_DIV_BCLK_MASK GENMASK(6, 4)
>> +#define SUN8I_I2S_CLK_DIV_BCLK_MASK GENMASK(7, 4)
>> #define SUN4I_I2S_CLK_DIV_BCLK(bclk) ((bclk) << 4)
>> #define SUN4I_I2S_CLK_DIV_MCLK_MASK GENMASK(3, 0)
>> #define SUN4I_I2S_CLK_DIV_MCLK(mclk) ((mclk) << 0)
>> @@ -82,14 +104,27 @@
>> #define SUN4I_I2S_TX_CNT_REG 0x2c
>>
>> #define SUN4I_I2S_TX_CHAN_SEL_REG 0x30
>> +#define SUN8I_I2S_TX_CHAN_CFG_REG 0x30
>> #define SUN4I_I2S_TX_CHAN_SEL(num_chan) (((num_chan) - 1) << 0)
>>
>> #define SUN4I_I2S_TX_CHAN_MAP_REG 0x34
>> #define SUN4I_I2S_TX_CHAN_MAP(chan, sample) ((sample) << (chan << 2))
>> +#define SUN8I_I2S_TX_CHAN_SEL_REG 0x34
>> +#define SUN8I_I2S_TX_CHAN_OFFSET_MASK GENMASK(13, 12)
>> +#define SUN8I_I2S_TX_CHAN_OFFSET(offset) (offset << 12)
>> +#define SUN8I_I2S_TX_CHAN_EN_MASK GENMASK(11, 4)
>> +#define SUN8I_I2S_TX_CHAN_EN(num_chan) (((1 << num_chan) - 1) << 4)
>> +#define SUN8I_I2S_TX_CHAN_SEL_MASK GENMASK(2, 0)
>> +#define SUN8I_I2S_TX_CHAN_SEL(num_chan) (((num_chan) - 1) << 0)
>>
>> #define SUN4I_I2S_RX_CHAN_SEL_REG 0x38
>> #define SUN4I_I2S_RX_CHAN_MAP_REG 0x3c
>>
>> +#define SUN8I_I2S_TX_CHAN_MAP_REG 0x44
>> +
>> +#define SUN8I_I2S_RX_CHAN_SEL_REG 0x54
>> +#define SUN8I_I2S_RX_CHAN_MAP_REG 0x58
>> +
>> struct sun4i_i2s {
>> struct clk *bus_clk;
>> struct clk *mod_clk;
>> @@ -363,6 +398,225 @@ static int sun4i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
>> return 0;
>> }
>>
>> +static int sun8i_i2s_set_clk_rate(struct sun4i_i2s *i2s,
>> + unsigned int rate,
>> + unsigned int word_size)
>> +{
>> + unsigned int clk_rate;
>> + int bclk_div, mclk_div;
>> + int ret, i;
>> +
>> + switch (rate) {
>> + case 176400:
>> + case 88200:
>> + case 44100:
>> + case 22050:
>> + case 11025:
>> + clk_rate = 22579200;
>> + break;
>> +
>> + case 192000:
>> + case 128000:
>> + case 96000:
>> + case 64000:
>> + case 48000:
>> + case 32000:
>> + case 24000:
>> + case 16000:
>> + case 12000:
>> + case 8000:
>> + clk_rate = 24576000;
>> + break;
>> +
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + ret = clk_set_rate(i2s->mod_clk, clk_rate);
>> + if (ret)
>> + return ret;
>> +
>> + /* Always favor the highest oversampling rate */
>> + for (i = (ARRAY_SIZE(sun4i_i2s_oversample_rates) - 1); i >= 0; i--) {
>> + unsigned int oversample_rate = sun4i_i2s_oversample_rates[i];
>> +
>> + bclk_div = sun4i_i2s_get_bclk_div(i2s, oversample_rate,
>> + word_size);
>> + mclk_div = sun4i_i2s_get_mclk_div(i2s, oversample_rate,
>> + clk_rate,
>> + rate);
>> +
>> + if ((bclk_div >= 0) && (mclk_div >= 0))
>> + break;
>> + }
>> +
>> + if ((bclk_div < 0) || (mclk_div < 0))
>> + return -EINVAL;
>> +
>> + regmap_write(i2s->regmap, SUN4I_I2S_CLK_DIV_REG,
>> + SUN4I_I2S_CLK_DIV_BCLK(bclk_div) |
>> + SUN4I_I2S_CLK_DIV_MCLK(mclk_div + 1) |
>> + SUN8I_I2S_CLK_DIV_MCLK_EN);
>
> Duplicating all that code just for a single bit difference doesn't
> seem very wise. You can handle that bit difference through
> regmap_fields.
Thanks Maxime for the quick review...I'll ack all these and get back
to you if I get stuck. Just had a quick look at reusing the original
function of the above and with some additional quirks it seems to
work. Wasn't aware of the regmap_fields so I will need to investiagte
their usage, do you know of any good examples?
BR,
CK
>
>
>> + /* Set sync period */
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG,
>> + SUN8I_I2S_FMT0_LRCK_PERIOD_MASK,
>> + SUN8I_I2S_FMT0_LRCK_PERIOD((2 * word_size)-1));
>> + regmap_write(i2s->regmap, SUN4I_I2S_FMT1_REG, 0);
>
> It seems to be applicable for the old flavour too, why isn't it there?
>
>> +
>> + return 0;
>> +}
>> +
>> +static int sun8i_i2s_hw_params(struct snd_pcm_substream *substream,
>> + struct snd_pcm_hw_params *params,
>> + struct snd_soc_dai *dai)
>> +{
>> + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
>> + int sr, wss;
>> + u32 width, channels = 0;
>> +
>> + switch (params_channels(params)) {
>> + case 2:
>> + channels |= SUN4I_I2S_CTRL_SDO_EN(0);
>> + break;
>> + default:
>> + dev_err(dai->dev, "invalid channel: %d\n",
>> + params_channels(params));
>> + return -EINVAL;
>> + }
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> + SUN4I_I2S_CTRL_SDO_EN_MASK, channels);
>
> This seems applicable to the old generation.
>
>> + /* Configure the channels */
>> + regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_CFG_REG,
>> + SUN4I_I2S_TX_CHAN_SEL(params_channels(params)));
>
> This can be handled by regmap_fields.
>
>> + /* Select the channels */
>> + regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG,
>> + SUN8I_I2S_TX_CHAN_EN_MASK |
>> + SUN8I_I2S_TX_CHAN_SEL_MASK,
>> + SUN8I_I2S_TX_CHAN_EN(params_channels(params)) |
>> + SUN8I_I2S_TX_CHAN_SEL(params_channels(params)));
>
> Ditto.
>
>>
>> + /* Map the channels for stereo playback */
>> + regmap_write(i2s->regmap, SUN8I_I2S_TX_CHAN_MAP_REG,
>> + SUN4I_I2S_TX_CHAN_MAP(1, 1));
>
> Ditto.
>
>> + /* Select the channels */
>> + regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_SEL_REG,
>> + SUN8I_I2S_TX_CHAN_SEL(params_channels(params)));
>
> Ditto.
>
>> + /* Map the channels for stereo capture */
>> + regmap_write(i2s->regmap, SUN8I_I2S_RX_CHAN_MAP_REG,
>> + SUN4I_I2S_TX_CHAN_MAP(1, 1));
>
> Ditto.
>
>> + switch (params_physical_width(params)) {
>> + case 16:
>> + width = DMA_SLAVE_BUSWIDTH_2_BYTES;
>> + break;
>> + case 24:
>> + case 32:
>> + width = DMA_SLAVE_BUSWIDTH_4_BYTES;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> + i2s->playback_dma_data.addr_width = width;
>
> This is applicable to the old generation.
>
>> +
>> + switch (params_width(params)) {
>> + case 16:
>> + sr = 3;
>> + wss = 3;
>> + break;
>> + case 20:
>> + sr = 4;
>> + wss = 4;
>> + break;
>> + case 24:
>> + sr = 5;
>> + wss = 5;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>
> It looks like this changed, maybe we can split it into a separate
> function?
>
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG,
>> + SUN8I_I2S_FMT0_WSS_MASK | SUN8I_I2S_FMT0_SR_MASK,
>> + SUN8I_I2S_FMT0_WSS(wss) | SUN4I_I2S_FMT0_SR(sr));
>> +
>> + return sun8i_i2s_set_clk_rate(i2s, params_rate(params),
>> + params_width(params));
>> +}
>> +
>> +static int sun8i_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
>> +{
>> + struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
>> + u32 val = SUN8I_I2S_CTRL_MODE_I2S;
>> + u32 offset = 0;
>> +
>> + /* DAI Mode */
>> + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
>> + case SND_SOC_DAIFMT_I2S:
>> + offset = 1;
>> + break;
>> + case SND_SOC_DAIFMT_LEFT_J:
>> + break;
>> + case SND_SOC_DAIFMT_RIGHT_J:
>> + val = SUN8I_I2S_CTRL_MODE_RIGHT_J;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> + SUN8I_I2S_CTRL_MODE_MASK,
>> + val);
>> +
>> + /* blck offset determines whether i2s or LJ */
>> + regmap_update_bits(i2s->regmap, SUN8I_I2S_TX_CHAN_SEL_REG,
>> + SUN8I_I2S_TX_CHAN_OFFSET_MASK,
>> + SUN8I_I2S_TX_CHAN_OFFSET(offset));
>> +
>> + /* DAI clock polarity */
>> + switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
>> + case SND_SOC_DAIFMT_IB_IF:
>> + /* Invert both clocks */
>> + val = SUN8I_I2S_FMT0_BCLK_POLARITY_INVERTED |
>> + SUN8I_I2S_FMT0_LRCLK_POLARITY_INVERTED;
>> + break;
>> + case SND_SOC_DAIFMT_IB_NF:
>> + /* Invert bit clock */
>> + val = SUN8I_I2S_FMT0_BCLK_POLARITY_INVERTED |
>> + SUN8I_I2S_FMT0_LRCLK_POLARITY_NORMAL;
>> + break;
>> + case SND_SOC_DAIFMT_NB_IF:
>> + /* Invert frame clock */
>> + val = SUN8I_I2S_FMT0_LRCLK_POLARITY_INVERTED |
>> + SUN8I_I2S_FMT0_BCLK_POLARITY_NORMAL;
>> + break;
>> + case SND_SOC_DAIFMT_NB_NF:
>> + /* Nothing to do for both normal cases */
>> + val = SUN8I_I2S_FMT0_BCLK_POLARITY_NORMAL |
>> + SUN8I_I2S_FMT0_LRCLK_POLARITY_NORMAL;
>> + break;
>> + default:
>> + return -EINVAL;
>> + }
>> +
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_FMT0_REG,
>> + SUN8I_I2S_FMT0_BCLK_POLARITY_MASK |
>> + SUN8I_I2S_FMT0_LRCLK_POLARITY_MASK,
>> + val);
>> +
>> + /* Set significant bits in our FIFOs */
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_FIFO_CTRL_REG,
>> + SUN4I_I2S_FIFO_CTRL_TX_MODE_MASK |
>> + SUN4I_I2S_FIFO_CTRL_RX_MODE_MASK,
>> + SUN4I_I2S_FIFO_CTRL_TX_MODE(1) |
>> + SUN4I_I2S_FIFO_CTRL_RX_MODE(1));
>> + return 0;
>> +}
>> +
>> static void sun4i_i2s_start_capture(struct sun4i_i2s *i2s)
>> {
>> /* Flush RX FIFO */
>> @@ -471,8 +725,8 @@ static int sun4i_i2s_startup(struct snd_pcm_substream *substream,
>> int ret = 0;
>>
>> /* Enable the whole hardware block */
>> - regmap_write(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> - SUN4I_I2S_CTRL_GL_EN);
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> + SUN4I_I2S_CTRL_GL_EN, SUN4I_I2S_CTRL_GL_EN);
>
> Why? This needs to be explained.
>
>>
>> /* Enable the first output line */
>> regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> @@ -500,7 +754,8 @@ static void sun4i_i2s_shutdown(struct snd_pcm_substream *substream,
>> SUN4I_I2S_CTRL_SDO_EN_MASK, 0);
>>
>> /* Disable the whole hardware block */
>> - regmap_write(i2s->regmap, SUN4I_I2S_CTRL_REG, 0);
>> + regmap_update_bits(i2s->regmap, SUN4I_I2S_CTRL_REG,
>> + SUN4I_I2S_CTRL_GL_EN, 0);
>
> Ditto.
>
>> }
>>
>> static int sun4i_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
>> @@ -525,6 +780,15 @@ static const struct snd_soc_dai_ops sun4i_i2s_dai_ops = {
>> .trigger = sun4i_i2s_trigger,
>> };
>>
>> +static const struct snd_soc_dai_ops sun8i_i2s_dai_ops = {
>> + .hw_params = sun8i_i2s_hw_params,
>> + .set_fmt = sun8i_i2s_set_fmt,
>> + .set_sysclk = sun4i_i2s_set_sysclk,
>> + .shutdown = sun4i_i2s_shutdown,
>> + .startup = sun4i_i2s_startup,
>> + .trigger = sun4i_i2s_trigger,
>> +};
>> +
>> static int sun4i_i2s_dai_probe(struct snd_soc_dai *dai)
>> {
>> struct sun4i_i2s *i2s = snd_soc_dai_get_drvdata(dai);
>> @@ -572,11 +836,11 @@ static bool sun4i_i2s_rd_reg(struct device *dev, unsigned int reg)
>> }
>> }
>>
>> +
>
> This one looks unnecessary
>
>> static bool sun4i_i2s_wr_reg(struct device *dev, unsigned int reg)
>> {
>> switch (reg) {
>> case SUN4I_I2S_FIFO_RX_REG:
>> - case SUN4I_I2S_FIFO_STA_REG:
>
> This needs to be explained
>
>> return false;
>>
>> default:
>> @@ -588,6 +852,7 @@ static bool sun4i_i2s_volatile_reg(struct device *dev, unsigned int reg)
>> {
>> switch (reg) {
>> case SUN4I_I2S_FIFO_RX_REG:
>> + case SUN4I_I2S_FIFO_STA_REG:
>
> Ditto.
>
>> case SUN4I_I2S_INT_STA_REG:
>> case SUN4I_I2S_RX_CNT_REG:
>> case SUN4I_I2S_TX_CNT_REG:
>> @@ -598,6 +863,34 @@ static bool sun4i_i2s_volatile_reg(struct device *dev, unsigned int reg)
>> }
>> }
>>
>> +static bool sun8i_i2s_rd_reg(struct device *dev, unsigned int reg)
>> +{
>> + switch (reg) {
>> + case SUN8I_I2S_FIFO_TX_REG:
>> + return false;
>> +
>> + default:
>> + return true;
>> + }
>> +}
>
> It also applies to the old generation.
>
>> +static bool sun8i_i2s_volatile_reg(struct device *dev, unsigned int reg)
>> +{
>> + switch (reg) {
>> + case SUN4I_I2S_FIFO_RX_REG:
>> + case SUN4I_I2S_FIFO_CTRL_REG:
>> + case SUN4I_I2S_FIFO_STA_REG:
>> + case SUN8I_I2S_INT_STA_REG:
>> + case SUN4I_I2S_RX_CNT_REG:
>> + case SUN4I_I2S_TX_CNT_REG:
>> + case SUN4I_I2S_TX_CHAN_MAP_REG:
>> + return true;
>> +
>> + default:
>> + return false;
>> + }
>> +}
>
> Besides the H3 interrupt status, it looks duplicated. Can't we share
> both implementations with a condition for that register?
>
>> +
>> static const struct reg_default sun4i_i2s_reg_defaults[] = {
>> { SUN4I_I2S_CTRL_REG, 0x00000000 },
>> { SUN4I_I2S_FMT0_REG, 0x0000000c },
>> @@ -611,6 +904,20 @@ static const struct reg_default sun4i_i2s_reg_defaults[] = {
>> { SUN4I_I2S_RX_CHAN_MAP_REG, 0x00003210 },
>> };
>>
>> +static const struct reg_default sun8i_i2s_reg_defaults[] = {
>> + { SUN4I_I2S_CTRL_REG, 0x00060000 },
>> + { SUN4I_I2S_FMT0_REG, 0x00000033 },
>> + { SUN4I_I2S_FMT1_REG, 0x00000030 },
>> + { SUN4I_I2S_FIFO_CTRL_REG, 0x000400f0 },
>> + { SUN4I_I2S_DMA_INT_CTRL_REG, 0x00000000 },
>> + { SUN4I_I2S_CLK_DIV_REG, 0x00000000 },
>> + { SUN8I_I2S_TX_CHAN_CFG_REG, 0x00000000 },
>> + { SUN8I_I2S_TX_CHAN_SEL_REG, 0x00000000 },
>> + { SUN8I_I2S_TX_CHAN_MAP_REG, 0x00000000 },
>> + { SUN8I_I2S_RX_CHAN_SEL_REG, 0x00000000 },
>> + { SUN8I_I2S_RX_CHAN_MAP_REG, 0x00000000 },
>> +};
>> +
>> static const struct regmap_config sun4i_i2s_regmap_config = {
>> .reg_bits = 32,
>> .reg_stride = 4,
>> @@ -625,6 +932,19 @@ static const struct regmap_config sun4i_i2s_regmap_config = {
>> .volatile_reg = sun4i_i2s_volatile_reg,
>> };
>>
>> +static const struct regmap_config sun8i_i2s_regmap_config = {
>> + .reg_bits = 32,
>> + .reg_stride = 4,
>> + .val_bits = 32,
>> + .max_register = SUN8I_I2S_RX_CHAN_MAP_REG,
>> + .cache_type = REGCACHE_FLAT,
>> + .reg_defaults = sun8i_i2s_reg_defaults,
>> + .num_reg_defaults = ARRAY_SIZE(sun8i_i2s_reg_defaults),
>> + .writeable_reg = sun4i_i2s_wr_reg,
>> + .readable_reg = sun8i_i2s_rd_reg,
>> + .volatile_reg = sun8i_i2s_volatile_reg,
>> +};
>> +
>> static int sun4i_i2s_runtime_resume(struct device *dev)
>> {
>> struct sun4i_i2s *i2s = dev_get_drvdata(dev);
>> @@ -684,6 +1004,13 @@ static const struct sun4i_i2s_quirks sun6i_a31_i2s_quirks = {
>> .ops = &sun4i_i2s_dai_ops,
>> };
>>
>> +static const struct sun4i_i2s_quirks sun8i_h3_i2s_quirks = {
>> + .has_reset = true,
>> + .reg_offset_txdata = SUN8I_I2S_FIFO_TX_REG,
>> + .sun4i_i2s_regmap = &sun8i_i2s_regmap_config,
>> + .ops = &sun8i_i2s_dai_ops,
>> +};
>> +
>> static int sun4i_i2s_probe(struct platform_device *pdev)
>> {
>> struct sun4i_i2s *i2s;
>> @@ -823,6 +1150,10 @@ static const struct of_device_id sun4i_i2s_match[] = {
>> .compatible = "allwinner,sun6i-a31-i2s",
>> .data = &sun6i_a31_i2s_quirks,
>> },
>> + {
>> + .compatible = "allwinner,sun8i-h3-i2s",
>> + .data = &sun8i_h3_i2s_quirks,
>> + },
>> {}
>> };
>> MODULE_DEVICE_TABLE(of, sun4i_i2s_match);
>> --
>> 2.13.2
>>
>
> Thanks!
> Maxime
>
> --
> Maxime Ripard, Free Electrons
> Embedded Linux and Kernel engineering
> http://free-electrons.com
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