From: Hans Verkuil hverkuil@xs4all.nl

This adds support for the fraction_bits field, used with integer controls. This allows fixed point formats to be described.

The fraction_bits field is only exposed through VIDIOC_QUERY_EXT_CTRL.

For a given signed two's complement Qf fixed point value 'f' equals fraction_bits.

Signed-off-by: Hans Verkuil hverkuil-cisco@xs4all.nl --- .../media/v4l/vidioc-queryctrl.rst | 11 ++- drivers/media/v4l2-core/v4l2-ctrls-api.c | 1 + drivers/media/v4l2-core/v4l2-ctrls-core.c | 93 +++++++++++++++---- include/media/v4l2-ctrls.h | 7 +- include/uapi/linux/videodev2.h | 3 +- 5 files changed, 95 insertions(+), 20 deletions(-)

diff --git a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst index 4d38acafe8e1..e65c7e5d78ec 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-queryctrl.rst @@ -267,7 +267,16 @@ See also the examples in :ref:`control`. - The size of each dimension. The first ``nr_of_dims`` elements of this array must be non-zero, all remaining elements must be zero. * - __u32 - - ``reserved``\ [32] + - ``fraction_bits`` + - The number of least significant bits of the control value that + form the fraction of the fixed point value. This is 0 if the value + is a regular integer. This can be used with all integer control types + (``INTEGER``, ``INTEGER64``, ``U8``, ``U16`` and ``U32``). + For the signed types the signed two's complement representation is used. + This field applies to the control value as well as the ``minimum``, + ``maximum``, ``step`` and ``default_value`` fields. + * - __u32 + - ``reserved``\ [31] - Reserved for future extensions. Applications and drivers must set the array to zero.

diff --git a/drivers/media/v4l2-core/v4l2-ctrls-api.c b/drivers/media/v4l2-core/v4l2-ctrls-api.c index d9a422017bd9..ef16b00421ec 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-api.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-api.c @@ -1101,6 +1101,7 @@ int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_query_ext_ctr qc->elems = ctrl->elems; qc->nr_of_dims = ctrl->nr_of_dims; memcpy(qc->dims, ctrl->dims, qc->nr_of_dims * sizeof(qc->dims[0])); + qc->fraction_bits = ctrl->fraction_bits; qc->minimum = ctrl->minimum; qc->maximum = ctrl->maximum; qc->default_value = ctrl->default_value; diff --git a/drivers/media/v4l2-core/v4l2-ctrls-core.c b/drivers/media/v4l2-core/v4l2-ctrls-core.c index c4d995f32191..d83a37198bb5 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-core.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-core.c @@ -252,12 +252,61 @@ void v4l2_ctrl_type_op_init(const struct v4l2_ctrl *ctrl, u32 from_idx, } EXPORT_SYMBOL(v4l2_ctrl_type_op_init);

+static void v4l2_ctrl_log_fp(s64 v, unsigned int fraction_bits) +{ + s64 i, f, mask; + + if (!fraction_bits) { + pr_cont("%lld", v); + return; + } + + mask = (1ULL << fraction_bits) - 1; + + /* + * Note: this function does not support fixed point u64 with + * fraction_bits set to 64. At the moment there is no U64 + * control type, but if that is added, then this code will have + * to add support for it. + */ + if (fraction_bits >= 63) + i = v < 0 ? -1 : 0; + else + i = div64_s64(v, 1LL << fraction_bits); + + f = v < 0 ? -((-v) & mask) : (v & mask); + + if (!f) { + pr_cont("%lld", i); + } else if (fraction_bits < 20) { + u64 div = 1ULL << fraction_bits; + + if (!i && f < 0) + pr_cont("-%lld/%llu", -f, div); + else if (!i) + pr_cont("%lld/%llu", f, div); + else if (i < 0 || f < 0) + pr_cont("-%lld-%llu/%llu", -i, -f, div); + else + pr_cont("%lld+%llu/%llu", i, f, div); + } else { + if (!i && f < 0) + pr_cont("-%lld/(2^%u)", -f, fraction_bits); + else if (!i) + pr_cont("%lld/(2^%u)", f, fraction_bits); + else if (i < 0 || f < 0) + pr_cont("-%lld-%llu/(2^%u)", -i, -f, fraction_bits); + else + pr_cont("%lld+%llu/(2^%u)", i, f, fraction_bits); + } +} + void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl) { union v4l2_ctrl_ptr ptr = ctrl->p_cur;

if (ctrl->is_array) { - unsigned i; + unsigned int i;

for (i = 0; i < ctrl->nr_of_dims; i++) pr_cont("[%u]", ctrl->dims[i]); @@ -266,7 +315,7 @@ void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl)

switch (ctrl->type) { case V4L2_CTRL_TYPE_INTEGER: - pr_cont("%d", *ptr.p_s32); + v4l2_ctrl_log_fp(*ptr.p_s32, ctrl->fraction_bits); break; case V4L2_CTRL_TYPE_BOOLEAN: pr_cont("%s", *ptr.p_s32 ? "true" : "false"); @@ -281,19 +330,19 @@ void v4l2_ctrl_type_op_log(const struct v4l2_ctrl *ctrl) pr_cont("0x%08x", *ptr.p_s32); break; case V4L2_CTRL_TYPE_INTEGER64: - pr_cont("%lld", *ptr.p_s64); + v4l2_ctrl_log_fp(*ptr.p_s64, ctrl->fraction_bits); break; case V4L2_CTRL_TYPE_STRING: pr_cont("%s", ptr.p_char); break; case V4L2_CTRL_TYPE_U8: - pr_cont("%u", (unsigned)*ptr.p_u8); + v4l2_ctrl_log_fp(*ptr.p_u8, ctrl->fraction_bits); break; case V4L2_CTRL_TYPE_U16: - pr_cont("%u", (unsigned)*ptr.p_u16); + v4l2_ctrl_log_fp(*ptr.p_u16, ctrl->fraction_bits); break; case V4L2_CTRL_TYPE_U32: - pr_cont("%u", (unsigned)*ptr.p_u32); + v4l2_ctrl_log_fp(*ptr.p_u32, ctrl->fraction_bits); break; case V4L2_CTRL_TYPE_H264_SPS: pr_cont("H264_SPS"); @@ -1753,11 +1802,12 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, u32 id, const char *name, enum v4l2_ctrl_type type, s64 min, s64 max, u64 step, s64 def, const u32 dims[V4L2_CTRL_MAX_DIMS], u32 elem_size, - u32 flags, const char * const *qmenu, + u32 fraction_bits, u32 flags, const char * const *qmenu, const s64 *qmenu_int, const union v4l2_ctrl_ptr p_def, void *priv) { struct v4l2_ctrl *ctrl; + unsigned int max_fraction_bits = 0; unsigned sz_extra; unsigned nr_of_dims = 0; unsigned elems = 1; @@ -1779,20 +1829,28 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl,

/* Prefill elem_size for all types handled by std_type_ops */ switch ((u32)type) { + case V4L2_CTRL_TYPE_INTEGER: + elem_size = sizeof(s32); + max_fraction_bits = 31; + break; case V4L2_CTRL_TYPE_INTEGER64: elem_size = sizeof(s64); + max_fraction_bits = 63; break; case V4L2_CTRL_TYPE_STRING: elem_size = max + 1; break; case V4L2_CTRL_TYPE_U8: elem_size = sizeof(u8); + max_fraction_bits = 8; break; case V4L2_CTRL_TYPE_U16: elem_size = sizeof(u16); + max_fraction_bits = 16; break; case V4L2_CTRL_TYPE_U32: elem_size = sizeof(u32); + max_fraction_bits = 32; break; case V4L2_CTRL_TYPE_MPEG2_SEQUENCE: elem_size = sizeof(struct v4l2_ctrl_mpeg2_sequence); @@ -1876,10 +1934,10 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, }

/* Sanity checks */ - if (id == 0 || name == NULL || !elem_size || - id >= V4L2_CID_PRIVATE_BASE || - (type == V4L2_CTRL_TYPE_MENU && qmenu == NULL) || - (type == V4L2_CTRL_TYPE_INTEGER_MENU && qmenu_int == NULL)) { + if (id == 0 || !name || !elem_size || + fraction_bits > max_fraction_bits || id >= V4L2_CID_PRIVATE_BASE || + (type == V4L2_CTRL_TYPE_MENU && !qmenu) || + (type == V4L2_CTRL_TYPE_INTEGER_MENU && !qmenu_int)) { handler_set_err(hdl, -ERANGE); return NULL; } @@ -1940,6 +1998,7 @@ static struct v4l2_ctrl *v4l2_ctrl_new(struct v4l2_ctrl_handler *hdl, ctrl->name = name; ctrl->type = type; ctrl->flags = flags; + ctrl->fraction_bits = fraction_bits; ctrl->minimum = min; ctrl->maximum = max; ctrl->step = step; @@ -2038,7 +2097,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl, ctrl = v4l2_ctrl_new(hdl, cfg->ops, cfg->type_ops, cfg->id, name, type, min, max, is_menu ? cfg->menu_skip_mask : step, def, - cfg->dims, cfg->elem_size, + cfg->dims, cfg->elem_size, cfg->fraction_bits, flags, qmenu, qmenu_int, cfg->p_def, priv); if (ctrl) ctrl->is_private = cfg->is_private; @@ -2063,7 +2122,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl, return NULL; } return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - min, max, step, def, NULL, 0, + min, max, step, def, NULL, 0, 0, flags, NULL, NULL, ptr_null, NULL); } EXPORT_SYMBOL(v4l2_ctrl_new_std); @@ -2096,7 +2155,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl, return NULL; } return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, mask, def, NULL, 0, + 0, max, mask, def, NULL, 0, 0, flags, qmenu, qmenu_int, ptr_null, NULL); } EXPORT_SYMBOL(v4l2_ctrl_new_std_menu); @@ -2128,7 +2187,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl, return NULL; } return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, mask, def, NULL, 0, + 0, max, mask, def, NULL, 0, 0, flags, qmenu, NULL, ptr_null, NULL);

} @@ -2150,7 +2209,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl, return NULL; } return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - min, max, step, def, NULL, 0, + min, max, step, def, NULL, 0, 0, flags, NULL, NULL, p_def, NULL); } EXPORT_SYMBOL(v4l2_ctrl_new_std_compound); @@ -2174,7 +2233,7 @@ struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl, return NULL; } return v4l2_ctrl_new(hdl, ops, NULL, id, name, type, - 0, max, 0, def, NULL, 0, + 0, max, 0, def, NULL, 0, 0, flags, NULL, qmenu_int, ptr_null, NULL); } EXPORT_SYMBOL(v4l2_ctrl_new_int_menu); diff --git a/include/media/v4l2-ctrls.h b/include/media/v4l2-ctrls.h index 59679a42b3e7..c35514c5bf88 100644 --- a/include/media/v4l2-ctrls.h +++ b/include/media/v4l2-ctrls.h @@ -211,7 +211,8 @@ typedef void (*v4l2_ctrl_notify_fnc)(struct v4l2_ctrl *ctrl, void *priv); * except for dynamic arrays. In that case it is in the range of * 1 to @p_array_alloc_elems. * @dims: The size of each dimension. - * @nr_of_dims:The number of dimensions in @dims. + * @nr_of_dims: The number of dimensions in @dims. + * @fraction_bits: The number of fraction bits for fixed point values. * @menu_skip_mask: The control's skip mask for menu controls. This makes it * easy to skip menu items that are not valid. If bit X is set, * then menu item X is skipped. Of course, this only works for @@ -228,6 +229,7 @@ typedef void (*v4l2_ctrl_notify_fnc)(struct v4l2_ctrl *ctrl, void *priv); * :math:`ceil(\frac{maximum - minimum}{step}) + 1`. * Used only if the @type is %V4L2_CTRL_TYPE_INTEGER_MENU. * @flags: The control's flags. + * @fraction_bits: The number of fraction bits for fixed point values. * @priv: The control's private pointer. For use by the driver. It is * untouched by the control framework. Note that this pointer is * not freed when the control is deleted. Should this be needed @@ -286,6 +288,7 @@ struct v4l2_ctrl { u32 new_elems; u32 dims[V4L2_CTRL_MAX_DIMS]; u32 nr_of_dims; + u32 fraction_bits; union { u64 step; u64 menu_skip_mask; @@ -426,6 +429,7 @@ struct v4l2_ctrl_handler { * @dims: The size of each dimension. * @elem_size: The size in bytes of the control. * @flags: The control's flags. + * @fraction_bits: The number of fraction bits for fixed point values. * @menu_skip_mask: The control's skip mask for menu controls. This makes it * easy to skip menu items that are not valid. If bit X is set, * then menu item X is skipped. Of course, this only works for @@ -455,6 +459,7 @@ struct v4l2_ctrl_config { u32 dims[V4L2_CTRL_MAX_DIMS]; u32 elem_size; u32 flags; + u32 fraction_bits; u64 menu_skip_mask; const char * const *qmenu; const s64 *qmenu_int; diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index a8015e5e7fa4..b8573e9ccde6 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -1947,7 +1947,8 @@ struct v4l2_query_ext_ctrl { __u32 elems; __u32 nr_of_dims; __u32 dims[V4L2_CTRL_MAX_DIMS]; - __u32 reserved[32]; + __u32 fraction_bits; + __u32 reserved[31]; };

/* Used in the VIDIOC_QUERYMENU ioctl for querying menu items */

ASRC can be used on memory to memory case, define several functions for m2m usage and export them as function pointer.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com Acked-by: Mark Brown broonie@kernel.org --- sound/soc/fsl/fsl_easrc.c | 214 ++++++++++++++++++++++++++++++++++++++ sound/soc/fsl/fsl_easrc.h | 4 + 2 files changed, 218 insertions(+)

diff --git a/sound/soc/fsl/fsl_easrc.c b/sound/soc/fsl/fsl_easrc.c index ec53bda46a46..cf7ad30a323b 100644 --- a/sound/soc/fsl/fsl_easrc.c +++ b/sound/soc/fsl/fsl_easrc.c @@ -1861,6 +1861,211 @@ static int fsl_easrc_get_fifo_addr(u8 dir, enum asrc_pair_index index) return REG_EASRC_FIFO(dir, index); }

+/* Get sample numbers in FIFO */ +static unsigned int fsl_easrc_get_output_fifo_size(struct fsl_asrc_pair *pair) +{ + struct fsl_asrc *asrc = pair->asrc; + enum asrc_pair_index index = pair->index; + u32 val; + + regmap_read(asrc->regmap, REG_EASRC_SFS(index), &val); + val &= EASRC_SFS_NSGO_MASK; + + return val >> EASRC_SFS_NSGO_SHIFT; +} + +static int fsl_easrc_m2m_prepare(struct fsl_asrc_pair *pair) +{ + struct fsl_easrc_ctx_priv *ctx_priv = pair->private; + struct fsl_asrc *asrc = pair->asrc; + struct device *dev = &asrc->pdev->dev; + int ret; + + ctx_priv->in_params.sample_rate = pair->rate[IN]; + ctx_priv->in_params.sample_format = pair->sample_format[IN]; + ctx_priv->out_params.sample_rate = pair->rate[OUT]; + ctx_priv->out_params.sample_format = pair->sample_format[OUT]; + + ctx_priv->in_params.fifo_wtmk = FSL_EASRC_INPUTFIFO_WML; + ctx_priv->out_params.fifo_wtmk = FSL_EASRC_OUTPUTFIFO_WML; + /* Fill the right half of the re-sampler with zeros */ + ctx_priv->rs_init_mode = 0x2; + /* Zero fill the right half of the prefilter */ + ctx_priv->pf_init_mode = 0x2; + + ret = fsl_easrc_set_ctx_format(pair, + &ctx_priv->in_params.sample_format, + &ctx_priv->out_params.sample_format); + if (ret) { + dev_err(dev, "failed to set context format: %d\n", ret); + return ret; + } + + ret = fsl_easrc_config_context(asrc, pair->index); + if (ret) { + dev_err(dev, "failed to config context %d\n", ret); + return ret; + } + + ctx_priv->in_params.iterations = 1; + ctx_priv->in_params.group_len = pair->channels; + ctx_priv->in_params.access_len = pair->channels; + ctx_priv->out_params.iterations = 1; + ctx_priv->out_params.group_len = pair->channels; + ctx_priv->out_params.access_len = pair->channels; + + ret = fsl_easrc_set_ctx_organziation(pair); + if (ret) { + dev_err(dev, "failed to set fifo organization\n"); + return ret; + } + + /* The context start flag */ + pair->first_convert = 1; + return 0; +} + +static int fsl_easrc_m2m_start(struct fsl_asrc_pair *pair) +{ + /* start context once */ + if (pair->first_convert) { + fsl_easrc_start_context(pair); + pair->first_convert = 0; + } + + return 0; +} + +static int fsl_easrc_m2m_stop(struct fsl_asrc_pair *pair) +{ + /* Stop pair/context */ + if (!pair->first_convert) { + fsl_easrc_stop_context(pair); + pair->first_convert = 1; + } + + return 0; +} + +/* calculate capture data length according to output data length and sample rate */ +static int fsl_easrc_m2m_calc_out_len(struct fsl_asrc_pair *pair, int input_buffer_length) +{ + struct fsl_asrc *easrc = pair->asrc; + struct fsl_easrc_priv *easrc_priv = easrc->private; + struct fsl_easrc_ctx_priv *ctx_priv = pair->private; + unsigned int in_rate = ctx_priv->in_params.norm_rate; + unsigned int out_rate = ctx_priv->out_params.norm_rate; + unsigned int channels = pair->channels; + unsigned int in_samples, out_samples; + unsigned int in_width, out_width; + unsigned int out_length; + unsigned int frac_bits; + u64 val1, val2; + + switch (easrc_priv->rs_num_taps) { + case EASRC_RS_32_TAPS: + /* integer bits = 5; */ + frac_bits = 39; + break; + case EASRC_RS_64_TAPS: + /* integer bits = 6; */ + frac_bits = 38; + break; + case EASRC_RS_128_TAPS: + /* integer bits = 7; */ + frac_bits = 37; + break; + default: + return -EINVAL; + } + + val1 = (u64)in_rate << frac_bits; + do_div(val1, out_rate); + val1 += (s64)ctx_priv->ratio_mod << (frac_bits - 31); + + in_width = snd_pcm_format_physical_width(ctx_priv->in_params.sample_format) / 8; + out_width = snd_pcm_format_physical_width(ctx_priv->out_params.sample_format) / 8; + + ctx_priv->in_filled_len += input_buffer_length; + if (ctx_priv->in_filled_len <= ctx_priv->in_filled_sample * in_width * channels) { + out_length = 0; + } else { + in_samples = ctx_priv->in_filled_len / (in_width * channels) - + ctx_priv->in_filled_sample; + + /* right shift 12 bit to make ratio in 32bit space */ + val2 = (u64)in_samples << (frac_bits - 12); + val1 = val1 >> 12; + do_div(val2, val1); + out_samples = val2; + + out_length = out_samples * out_width * channels; + ctx_priv->in_filled_len = ctx_priv->in_filled_sample * in_width * channels; + } + + return out_length; +} + +static int fsl_easrc_m2m_get_maxburst(u8 dir, struct fsl_asrc_pair *pair) +{ + struct fsl_easrc_ctx_priv *ctx_priv = pair->private; + + if (dir == IN) + return ctx_priv->in_params.fifo_wtmk * pair->channels; + else + return ctx_priv->out_params.fifo_wtmk * pair->channels; +} + +static int fsl_easrc_m2m_pair_suspend(struct fsl_asrc_pair *pair) +{ + fsl_easrc_stop_context(pair); + + return 0; +} + +static int fsl_easrc_m2m_pair_resume(struct fsl_asrc_pair *pair) +{ + struct fsl_easrc_ctx_priv *ctx_priv = pair->private; + + pair->first_convert = 1; + ctx_priv->in_filled_len = 0; + + return 0; +} + +/* val is Q31 */ +static int fsl_easrc_m2m_set_ratio_mod(struct fsl_asrc_pair *pair, int val) +{ + struct fsl_easrc_ctx_priv *ctx_priv = pair->private; + struct fsl_asrc *easrc = pair->asrc; + struct fsl_easrc_priv *easrc_priv = easrc->private; + unsigned int frac_bits; + + ctx_priv->ratio_mod += val; + + switch (easrc_priv->rs_num_taps) { + case EASRC_RS_32_TAPS: + /* integer bits = 5; */ + frac_bits = 39; + break; + case EASRC_RS_64_TAPS: + /* integer bits = 6; */ + frac_bits = 38; + break; + case EASRC_RS_128_TAPS: + /* integer bits = 7; */ + frac_bits = 37; + break; + default: + return -EINVAL; + } + + val <<= (frac_bits - 31); + regmap_write(easrc->regmap, REG_EASRC_RUC(pair->index), EASRC_RSUC_RS_RM(val)); + + return 0; +} + static const struct of_device_id fsl_easrc_dt_ids[] = { { .compatible = "fsl,imx8mn-easrc",}, {} @@ -1926,6 +2131,15 @@ static int fsl_easrc_probe(struct platform_device *pdev) easrc->release_pair = fsl_easrc_release_context; easrc->get_fifo_addr = fsl_easrc_get_fifo_addr; easrc->pair_priv_size = sizeof(struct fsl_easrc_ctx_priv); + easrc->m2m_prepare = fsl_easrc_m2m_prepare; + easrc->m2m_start = fsl_easrc_m2m_start; + easrc->m2m_stop = fsl_easrc_m2m_stop; + easrc->get_output_fifo_size = fsl_easrc_get_output_fifo_size; + easrc->m2m_calc_out_len = fsl_easrc_m2m_calc_out_len; + easrc->m2m_get_maxburst = fsl_easrc_m2m_get_maxburst; + easrc->m2m_pair_suspend = fsl_easrc_m2m_pair_suspend; + easrc->m2m_pair_resume = fsl_easrc_m2m_pair_resume; + easrc->m2m_set_ratio_mod = fsl_easrc_m2m_set_ratio_mod;

easrc_priv->rs_num_taps = EASRC_RS_32_TAPS; easrc_priv->const_coeff = 0x3FF0000000000000; diff --git a/sound/soc/fsl/fsl_easrc.h b/sound/soc/fsl/fsl_easrc.h index 7c70dac52713..c9f770862662 100644 --- a/sound/soc/fsl/fsl_easrc.h +++ b/sound/soc/fsl/fsl_easrc.h @@ -601,6 +601,8 @@ struct fsl_easrc_slot { * @out_missed_sample: sample missed in output * @st1_addexp: exponent added for stage1 * @st2_addexp: exponent added for stage2 + * @ratio_mod: update ratio + * @in_filled_len: input filled length */ struct fsl_easrc_ctx_priv { struct fsl_easrc_io_params in_params; @@ -618,6 +620,8 @@ struct fsl_easrc_ctx_priv { int out_missed_sample; int st1_addexp; int st2_addexp; + int ratio_mod; + unsigned int in_filled_len; };

/**

Register m2m platform device, that user can use M2M feature.

Defined platform data structure and platform driver name.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com Acked-by: Mark Brown broonie@kernel.org --- include/sound/fsl_asrc_common.h | 23 +++++++++++++++++++++++ sound/soc/fsl/fsl_asrc.c | 18 ++++++++++++++++++ 2 files changed, 41 insertions(+)

diff --git a/include/sound/fsl_asrc_common.h b/include/sound/fsl_asrc_common.h index 3b53d366182f..c709b8906929 100644 --- a/include/sound/fsl_asrc_common.h +++ b/include/sound/fsl_asrc_common.h @@ -71,6 +71,7 @@ struct fsl_asrc_pair { * @dma_params_rx: DMA parameters for receive channel * @dma_params_tx: DMA parameters for transmit channel * @pdev: platform device pointer + * @m2m_pdev: m2m platform device pointer * @regmap: regmap handler * @paddr: physical address to the base address of registers * @mem_clk: clock source to access register @@ -103,6 +104,7 @@ struct fsl_asrc { struct snd_dmaengine_dai_dma_data dma_params_rx; struct snd_dmaengine_dai_dma_data dma_params_tx; struct platform_device *pdev; + struct platform_device *m2m_pdev; struct regmap *regmap; unsigned long paddr; struct clk *mem_clk; @@ -139,6 +141,27 @@ struct fsl_asrc { void *private; };

+/** + * struct fsl_asrc_m2m_pdata - platform data + * @asrc: pointer to struct fsl_asrc + * @fmt_in: input sample format + * @fmt_out: output sample format + * @chan_min: minimum channel number + * @chan_max: maximum channel number + * @rate_min: minimum rate + * @rate_max: maximum rete + */ +struct fsl_asrc_m2m_pdata { + struct fsl_asrc *asrc; + u64 fmt_in; + u64 fmt_out; + int chan_min; + int chan_max; + int rate_min; + int rate_max; +}; + +#define M2M_DRV_NAME "fsl_asrc_m2m" #define DRV_NAME "fsl-asrc-dai" extern struct snd_soc_component_driver fsl_asrc_component;

diff --git a/sound/soc/fsl/fsl_asrc.c b/sound/soc/fsl/fsl_asrc.c index 7d8643ee0ba0..5ecb5d869607 100644 --- a/sound/soc/fsl/fsl_asrc.c +++ b/sound/soc/fsl/fsl_asrc.c @@ -1187,6 +1187,7 @@ static int fsl_asrc_runtime_suspend(struct device *dev); static int fsl_asrc_probe(struct platform_device *pdev) { struct device_node *np = pdev->dev.of_node; + struct fsl_asrc_m2m_pdata m2m_pdata; struct fsl_asrc_priv *asrc_priv; struct fsl_asrc *asrc; struct resource *res; @@ -1368,6 +1369,18 @@ static int fsl_asrc_probe(struct platform_device *pdev) goto err_pm_get_sync; }

+ m2m_pdata.asrc = asrc; + m2m_pdata.fmt_in = FSL_ASRC_FORMATS; + m2m_pdata.fmt_out = FSL_ASRC_FORMATS | SNDRV_PCM_FMTBIT_S8; + m2m_pdata.rate_min = 5512; + m2m_pdata.rate_max = 192000; + m2m_pdata.chan_min = 1; + m2m_pdata.chan_max = 10; + asrc->m2m_pdev = platform_device_register_data(&pdev->dev, + M2M_DRV_NAME, + PLATFORM_DEVID_AUTO, + &m2m_pdata, + sizeof(m2m_pdata)); return 0;

err_pm_get_sync: @@ -1380,6 +1393,11 @@ static int fsl_asrc_probe(struct platform_device *pdev)

static void fsl_asrc_remove(struct platform_device *pdev) { + struct fsl_asrc *asrc = dev_get_drvdata(&pdev->dev); + + if (asrc->m2m_pdev && !IS_ERR(asrc->m2m_pdev)) + platform_device_unregister(asrc->m2m_pdev); + pm_runtime_disable(&pdev->dev); if (!pm_runtime_status_suspended(&pdev->dev)) fsl_asrc_runtime_suspend(&pdev->dev);

V4L2_CAP_AUDIO_M2M is similar to V4L2_CAP_VIDEO_M2M flag.

It is used for audio memory to memory case.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- Documentation/userspace-api/media/v4l/vidioc-querycap.rst | 3 +++ Documentation/userspace-api/media/videodev2.h.rst.exceptions | 1 + include/uapi/linux/videodev2.h | 1 + 3 files changed, 5 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst index 6c57b8428356..1c0d97bf192a 100644 --- a/Documentation/userspace-api/media/v4l/vidioc-querycap.rst +++ b/Documentation/userspace-api/media/v4l/vidioc-querycap.rst @@ -173,6 +173,9 @@ specification the ioctl returns an ``EINVAL`` error code. interface. A video overlay device typically stores captured images directly in the video memory of a graphics card, with hardware clipping and scaling. + * - ``V4L2_CAP_AUDIO_M2M`` + - 0x00000008 + - The device supports the audio Memory-To-Memory interface. * - ``V4L2_CAP_VBI_CAPTURE`` - 0x00000010 - The device supports the :ref:`Raw VBI Capture <raw-vbi>` diff --git a/Documentation/userspace-api/media/videodev2.h.rst.exceptions b/Documentation/userspace-api/media/videodev2.h.rst.exceptions index 3e58aac4ef0b..da6d0b8e4c2c 100644 --- a/Documentation/userspace-api/media/videodev2.h.rst.exceptions +++ b/Documentation/userspace-api/media/videodev2.h.rst.exceptions @@ -197,6 +197,7 @@ replace define V4L2_CAP_META_OUTPUT device-capabilities replace define V4L2_CAP_DEVICE_CAPS device-capabilities replace define V4L2_CAP_TOUCH device-capabilities replace define V4L2_CAP_IO_MC device-capabilities +replace define V4L2_CAP_AUDIO_M2M device-capabilities

# V4L2 pix flags replace define V4L2_PIX_FMT_PRIV_MAGIC :c:type:`v4l2_pix_format` diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index b8573e9ccde6..5cc2a978fd9c 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -473,6 +473,7 @@ struct v4l2_capability { #define V4L2_CAP_VIDEO_CAPTURE 0x00000001 /* Is a video capture device */ #define V4L2_CAP_VIDEO_OUTPUT 0x00000002 /* Is a video output device */ #define V4L2_CAP_VIDEO_OVERLAY 0x00000004 /* Can do video overlay */ +#define V4L2_CAP_AUDIO_M2M 0x00000008 /* audio memory to memory */ #define V4L2_CAP_VBI_CAPTURE 0x00000010 /* Is a raw VBI capture device */ #define V4L2_CAP_VBI_OUTPUT 0x00000020 /* Is a raw VBI output device */ #define V4L2_CAP_SLICED_VBI_CAPTURE 0x00000040 /* Is a sliced VBI capture device */

The audio sample format definition is from alsa, the header file is include/uapi/sound/asound.h, but don't include this header file directly, because in user space, there is another copy in alsa-lib. There will be conflict in userspace for include videodev2.h & asound.h and asoundlib.h

Here still use the fourcc format.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- .../userspace-api/media/v4l/pixfmt-audio.rst | 87 +++++++++++++++++++ .../userspace-api/media/v4l/pixfmt.rst | 1 + drivers/media/v4l2-core/v4l2-ioctl.c | 13 +++ include/uapi/linux/videodev2.h | 23 +++++ 4 files changed, 124 insertions(+) create mode 100644 Documentation/userspace-api/media/v4l/pixfmt-audio.rst

diff --git a/Documentation/userspace-api/media/v4l/pixfmt-audio.rst b/Documentation/userspace-api/media/v4l/pixfmt-audio.rst new file mode 100644 index 000000000000..04b4a7fbd8f4 --- /dev/null +++ b/Documentation/userspace-api/media/v4l/pixfmt-audio.rst @@ -0,0 +1,87 @@ +.. SPDX-License-Identifier: GFDL-1.1-no-invariants-or-later + +.. _pixfmt-audio: + +************* +Audio Formats +************* + +These formats are used for :ref:`audiomem2mem` interface only. + +.. tabularcolumns:: |p{5.8cm}|p{1.2cm}|p{10.3cm}| + +.. cssclass:: longtable + +.. flat-table:: Audio Format + :header-rows: 1 + :stub-columns: 0 + :widths: 3 1 4 + + * - Identifier + - Code + - Details + * .. _V4L2-AUDIO-FMT-S8: + + - ``V4L2_AUDIO_FMT_S8`` + - 'S8' + - Corresponds to SNDRV_PCM_FORMAT_S8 in ALSA + * .. _V4L2-AUDIO-FMT-S16-LE: + + - ``V4L2_AUDIO_FMT_S16_LE`` + - 'S16_LE' + - Corresponds to SNDRV_PCM_FORMAT_S16_LE in ALSA + * .. _V4L2-AUDIO-FMT-U16-LE: + + - ``V4L2_AUDIO_FMT_U16_LE`` + - 'U16_LE' + - Corresponds to SNDRV_PCM_FORMAT_U16_LE in ALSA + * .. _V4L2-AUDIO-FMT-S24-LE: + + - ``V4L2_AUDIO_FMT_S24_LE`` + - 'S24_LE' + - Corresponds to SNDRV_PCM_FORMAT_S24_LE in ALSA + * .. _V4L2-AUDIO-FMT-U24-LE: + + - ``V4L2_AUDIO_FMT_U24_LE`` + - 'U24_LE' + - Corresponds to SNDRV_PCM_FORMAT_U24_LE in ALSA + * .. _V4L2-AUDIO-FMT-S32-LE: + + - ``V4L2_AUDIO_FMT_S32_LE`` + - 'S32_LE' + - Corresponds to SNDRV_PCM_FORMAT_S32_LE in ALSA + * .. _V4L2-AUDIO-FMT-U32-LE: + + - ``V4L2_AUDIO_FMT_U32_LE`` + - 'U32_LE' + - Corresponds to SNDRV_PCM_FORMAT_U32_LE in ALSA + * .. _V4L2-AUDIO-FMT-FLOAT-LE: + + - ``V4L2_AUDIO_FMT_FLOAT_LE`` + - 'FLOAT_LE' + - Corresponds to SNDRV_PCM_FORMAT_FLOAT_LE in ALSA + * .. _V4L2-AUDIO-FMT-IEC958-SUBFRAME-LE: + + - ``V4L2_AUDIO_FMT_IEC958_SUBFRAME_LE`` + - 'IEC958_SUBFRAME_LE' + - Corresponds to SNDRV_PCM_FORMAT_IEC958_SUBFRAME_LE in ALSA + * .. _V4L2-AUDIO-FMT-S24-3LE: + + - ``V4L2_AUDIO_FMT_S24_3LE`` + - 'S24_3LE' + - Corresponds to SNDRV_PCM_FORMAT_S24_3LE in ALSA + * .. _V4L2-AUDIO-FMT-U24-3LE: + + - ``V4L2_AUDIO_FMT_U24_3LE`` + - 'U24_3LE' + - Corresponds to SNDRV_PCM_FORMAT_U24_3LE in ALSA + * .. _V4L2-AUDIO-FMT-S20-3LE: + + - ``V4L2_AUDIO_FMT_S20_3LE`` + - 'S20_3LE' + - Corresponds to SNDRV_PCM_FORMAT_S24_3LE in ALSA + * .. _V4L2-AUDIO-FMT-U20-3LE: + + - ``V4L2_AUDIO_FMT_U20_3LE`` + - 'U20_3LE' + - Corresponds to SNDRV_PCM_FORMAT_U20_3LE in ALSA diff --git a/Documentation/userspace-api/media/v4l/pixfmt.rst b/Documentation/userspace-api/media/v4l/pixfmt.rst index 11dab4a90630..2eb6fdd3b43d 100644 --- a/Documentation/userspace-api/media/v4l/pixfmt.rst +++ b/Documentation/userspace-api/media/v4l/pixfmt.rst @@ -36,3 +36,4 @@ see also :ref:`VIDIOC_G_FBUF <VIDIOC_G_FBUF>`.) colorspaces colorspaces-defs colorspaces-details + pixfmt-audio diff --git a/drivers/media/v4l2-core/v4l2-ioctl.c b/drivers/media/v4l2-core/v4l2-ioctl.c index 961abcdf7290..be229c69e991 100644 --- a/drivers/media/v4l2-core/v4l2-ioctl.c +++ b/drivers/media/v4l2-core/v4l2-ioctl.c @@ -1471,6 +1471,19 @@ static void v4l_fill_fmtdesc(struct v4l2_fmtdesc *fmt) case V4L2_PIX_FMT_Y210: descr = "10-bit YUYV Packed"; break; case V4L2_PIX_FMT_Y212: descr = "12-bit YUYV Packed"; break; case V4L2_PIX_FMT_Y216: descr = "16-bit YUYV Packed"; break; + case V4L2_AUDIO_FMT_S8: descr = "8-bit Signed"; break; + case V4L2_AUDIO_FMT_S16_LE: descr = "16-bit Signed LE"; break; + case V4L2_AUDIO_FMT_U16_LE: descr = "16-bit Unsigned LE"; break; + case V4L2_AUDIO_FMT_S24_LE: descr = "24(32)-bit Signed LE"; break; + case V4L2_AUDIO_FMT_U24_LE: descr = "24(32)-bit Unsigned LE"; break; + case V4L2_AUDIO_FMT_S32_LE: descr = "32-bit Signed LE"; break; + case V4L2_AUDIO_FMT_U32_LE: descr = "32-bit Unsigned LE"; break; + case V4L2_AUDIO_FMT_FLOAT_LE: descr = "32-bit Float LE"; break; + case V4L2_AUDIO_FMT_IEC958_SUBFRAME_LE: descr = "32-bit IEC958 LE"; break; + case V4L2_AUDIO_FMT_S24_3LE: descr = "24(24)-bit Signed LE"; break; + case V4L2_AUDIO_FMT_U24_3LE: descr = "24(24)-bit Unsigned LE"; break; + case V4L2_AUDIO_FMT_S20_3LE: descr = "20(24)-bit Signed LE"; break; + case V4L2_AUDIO_FMT_U20_3LE: descr = "20(24)-bit Unsigned LE"; break;

default: /* Compressed formats */ diff --git a/include/uapi/linux/videodev2.h b/include/uapi/linux/videodev2.h index 2c03d2dfadbe..673a6235a029 100644 --- a/include/uapi/linux/videodev2.h +++ b/include/uapi/linux/videodev2.h @@ -843,6 +843,29 @@ struct v4l2_pix_format { #define V4L2_META_FMT_RK_ISP1_PARAMS v4l2_fourcc('R', 'K', '1', 'P') /* Rockchip ISP1 3A Parameters */ #define V4L2_META_FMT_RK_ISP1_STAT_3A v4l2_fourcc('R', 'K', '1', 'S') /* Rockchip ISP1 3A Statistics */

+/* + * Audio-data formats + * All these audio formats use a fourcc starting with 'AU' + * followed by the SNDRV_PCM_FORMAT_ value from asound.h. + */ +#define V4L2_AUDIO_FMT_S8 v4l2_fourcc('A', 'U', '0', '0') +#define V4L2_AUDIO_FMT_S16_LE v4l2_fourcc('A', 'U', '0', '2') +#define V4L2_AUDIO_FMT_U16_LE v4l2_fourcc('A', 'U', '0', '4') +#define V4L2_AUDIO_FMT_S24_LE v4l2_fourcc('A', 'U', '0', '6') +#define V4L2_AUDIO_FMT_U24_LE v4l2_fourcc('A', 'U', '0', '8') +#define V4L2_AUDIO_FMT_S32_LE v4l2_fourcc('A', 'U', '1', '0') +#define V4L2_AUDIO_FMT_U32_LE v4l2_fourcc('A', 'U', '1', '2') +#define V4L2_AUDIO_FMT_FLOAT_LE v4l2_fourcc('A', 'U', '1', '4') +#define V4L2_AUDIO_FMT_IEC958_SUBFRAME_LE v4l2_fourcc('A', 'U', '1', '8') +#define V4L2_AUDIO_FMT_S24_3LE v4l2_fourcc('A', 'U', '3', '2') +#define V4L2_AUDIO_FMT_U24_3LE v4l2_fourcc('A', 'U', '3', '4') +#define V4L2_AUDIO_FMT_S20_3LE v4l2_fourcc('A', 'U', '3', '6') +#define V4L2_AUDIO_FMT_U20_3LE v4l2_fourcc('A', 'U', '3', '8') + +#define v4l2_fourcc_to_audfmt(fourcc) \ + (__force snd_pcm_format_t)(((((fourcc) >> 16) & 0xff) - '0') * 10 \ + + ((((fourcc) >> 24) & 0xff) - '0')) + /* priv field value to indicates that subsequent fields are valid. */ #define V4L2_PIX_FMT_PRIV_MAGIC 0xfeedcafe

Add V4L2_CID_M2M_AUDIO_SOURCE_RATE and V4L2_CID_M2M_AUDIO_DEST_RATE new IDs for rate control.

Add V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET and V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET for clock drift.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- .../media/v4l/ext-ctrls-audio-m2m.rst | 38 +++++++++++++++++++ drivers/media/v4l2-core/v4l2-ctrls-defs.c | 6 +++ include/uapi/linux/v4l2-controls.h | 5 +++ 3 files changed, 49 insertions(+)

diff --git a/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst b/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst index 82d2ecedbfee..b137b7c442e6 100644 --- a/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst +++ b/Documentation/userspace-api/media/v4l/ext-ctrls-audio-m2m.rst @@ -19,3 +19,41 @@ Audio M2M Control IDs The Audio M2M class descriptor. Calling :ref:`VIDIOC_QUERYCTRL` for this control will return a description of this control class. + +.. _v4l2-audio-asrc: + +``V4L2_CID_M2M_AUDIO_SOURCE_RATE (integer menu)`` + This control specifies the audio source sample rate, unit is Hz + +``V4L2_CID_M2M_AUDIO_DEST_RATE (integer menu)`` + This control specifies the audio destination sample rate, unit is Hz + +``V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET (fixed point)`` + This control specifies the offset from the audio source sample rate, + unit is Hz. + + The offset compensates for any clock drift. The actual source audio + sample rate is the ideal source audio sample rate from + ``V4L2_CID_M2M_AUDIO_SOURCE_RATE`` plus this fixed point offset. + + The audio source clock may have some drift. Reducing or increasing the + audio sample rate dynamically to ensure that Sample Rate Converter is + working on the real sample rate, this feature is for the Asynchronous + Sample Rate Converter module. + So, userspace would be expected to be monitoring such drift + and increasing/decreasing the sample frequency as needed by this control. + +``V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET (fixed point)`` + This control specifies the offset from the audio destination sample rate, + unit is Hz. + + The offset compensates for any clock drift. The actual destination audio + sample rate is the ideal source audio sample rate from + ``V4L2_CID_M2M_AUDIO_DEST_RATE`` plus this fixed point offset. + + The audio destination clock may have some drift. Reducing or increasing + the audio sample rate dynamically to ensure that sample rate converter + is working on the real sample rate, this feature is for the Asynchronous + Sample Rate Converter module. + So, userspace would be expected to be monitoring such drift + and increasing/decreasing the sample frequency as needed by this control. diff --git a/drivers/media/v4l2-core/v4l2-ctrls-defs.c b/drivers/media/v4l2-core/v4l2-ctrls-defs.c index 2a85ea3dc92f..91e1f5348c23 100644 --- a/drivers/media/v4l2-core/v4l2-ctrls-defs.c +++ b/drivers/media/v4l2-core/v4l2-ctrls-defs.c @@ -1245,6 +1245,8 @@ const char *v4l2_ctrl_get_name(u32 id)

/* Audio M2M controls */ case V4L2_CID_M2M_AUDIO_CLASS: return "Audio M2M Controls"; + case V4L2_CID_M2M_AUDIO_SOURCE_RATE: return "Audio Source Sample Rate"; + case V4L2_CID_M2M_AUDIO_DEST_RATE: return "Audio Destination Sample Rate"; default: return NULL; } @@ -1606,6 +1608,10 @@ void v4l2_ctrl_fill(u32 id, const char **name, enum v4l2_ctrl_type *type, case V4L2_CID_COLORIMETRY_HDR10_MASTERING_DISPLAY: *type = V4L2_CTRL_TYPE_HDR10_MASTERING_DISPLAY; break; + case V4L2_CID_M2M_AUDIO_SOURCE_RATE: + case V4L2_CID_M2M_AUDIO_DEST_RATE: + *type = V4L2_CTRL_TYPE_INTEGER_MENU; + break; default: *type = V4L2_CTRL_TYPE_INTEGER; break; diff --git a/include/uapi/linux/v4l2-controls.h b/include/uapi/linux/v4l2-controls.h index a8b4b830c757..30129ccdc282 100644 --- a/include/uapi/linux/v4l2-controls.h +++ b/include/uapi/linux/v4l2-controls.h @@ -3495,6 +3495,11 @@ struct v4l2_ctrl_av1_film_grain { #define V4L2_CID_M2M_AUDIO_CLASS_BASE (V4L2_CTRL_CLASS_M2M_AUDIO | 0x900) #define V4L2_CID_M2M_AUDIO_CLASS (V4L2_CTRL_CLASS_M2M_AUDIO | 1)

+#define V4L2_CID_M2M_AUDIO_SOURCE_RATE (V4L2_CID_M2M_AUDIO_CLASS_BASE + 0) +#define V4L2_CID_M2M_AUDIO_DEST_RATE (V4L2_CID_M2M_AUDIO_CLASS_BASE + 1) +#define V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET (V4L2_CID_M2M_AUDIO_CLASS_BASE + 2) +#define V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET (V4L2_CID_M2M_AUDIO_CLASS_BASE + 3) + /* MPEG-compression definitions kept for backwards compatibility */ #ifndef __KERNEL__ #define V4L2_CTRL_CLASS_MPEG V4L2_CTRL_CLASS_CODEC

Add and document a media entity type for an audio resampler. It is MEDIA_ENT_F_PROC_AUDIO_RESAMPLER.

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- Documentation/userspace-api/media/mediactl/media-types.rst | 6 ++++++ include/uapi/linux/media.h | 1 + 2 files changed, 7 insertions(+)

diff --git a/Documentation/userspace-api/media/mediactl/media-types.rst b/Documentation/userspace-api/media/mediactl/media-types.rst index adfb37430f8e..d353f17c3344 100644 --- a/Documentation/userspace-api/media/mediactl/media-types.rst +++ b/Documentation/userspace-api/media/mediactl/media-types.rst @@ -40,6 +40,7 @@ Types and flags used to represent the media graph elements .. _MEDIA-ENT-F-PROC-VIDEO-ENCODER: .. _MEDIA-ENT-F-PROC-VIDEO-DECODER: .. _MEDIA-ENT-F-PROC-VIDEO-ISP: +.. _MEDIA-ENT-F-PROC-AUDIO-RESAMPLER: .. _MEDIA-ENT-F-VID-MUX: .. _MEDIA-ENT-F-VID-IF-BRIDGE: .. _MEDIA-ENT-F-DV-DECODER: @@ -208,6 +209,11 @@ Types and flags used to represent the media graph elements combination of custom V4L2 controls and IOCTLs, and parameters supplied in a metadata buffer.

+ * - ``MEDIA_ENT_F_PROC_AUDIO_RESAMPLER`` + - An Audio Resampler device. An entity capable of + resampling an audio stream from one sample rate to another sample + rate. Must have one sink pad and at least one source pad. + * - ``MEDIA_ENT_F_VID_MUX`` - Video multiplexer. An entity capable of multiplexing must have at least two sink pads and one source pad, and must pass the video diff --git a/include/uapi/linux/media.h b/include/uapi/linux/media.h index 9ff6dec7393a..a8266eaa8042 100644 --- a/include/uapi/linux/media.h +++ b/include/uapi/linux/media.h @@ -125,6 +125,7 @@ struct media_device_info { #define MEDIA_ENT_F_PROC_VIDEO_ENCODER (MEDIA_ENT_F_BASE + 0x4007) #define MEDIA_ENT_F_PROC_VIDEO_DECODER (MEDIA_ENT_F_BASE + 0x4008) #define MEDIA_ENT_F_PROC_VIDEO_ISP (MEDIA_ENT_F_BASE + 0x4009) +#define MEDIA_ENT_F_PROC_AUDIO_RESAMPLER (MEDIA_ENT_F_BASE + 0x400a)

/* * Switch and bridge entity functions

Implement the ASRC memory to memory function using the v4l2 framework, user can use this function with v4l2 ioctl interface.

User send the output and capture buffer to driver and driver store the converted data to the capture buffer.

This feature can be shared by ASRC and EASRC drivers

Signed-off-by: Shengjiu Wang shengjiu.wang@nxp.com --- drivers/media/platform/nxp/Kconfig | 13 + drivers/media/platform/nxp/Makefile | 1 + drivers/media/platform/nxp/imx-asrc.c | 1256 +++++++++++++++++++++++++ 3 files changed, 1270 insertions(+) create mode 100644 drivers/media/platform/nxp/imx-asrc.c

diff --git a/drivers/media/platform/nxp/Kconfig b/drivers/media/platform/nxp/Kconfig index 40e3436669e2..8d0ca335601f 100644 --- a/drivers/media/platform/nxp/Kconfig +++ b/drivers/media/platform/nxp/Kconfig @@ -67,3 +67,16 @@ config VIDEO_MX2_EMMAPRP

source "drivers/media/platform/nxp/dw100/Kconfig" source "drivers/media/platform/nxp/imx-jpeg/Kconfig" + +config VIDEO_IMX_ASRC + tristate "NXP i.MX ASRC M2M support" + depends on V4L_MEM2MEM_DRIVERS + depends on MEDIA_SUPPORT + select VIDEOBUF2_DMA_CONTIG + select V4L2_MEM2MEM_DEV + select MEDIA_CONTROLLER + help + Say Y if you want to add ASRC M2M support for NXP CPUs. + It is a complement for ASRC M2P and ASRC P2M features. + This option is only useful for out-of-tree drivers since + in-tree drivers select it automatically. diff --git a/drivers/media/platform/nxp/Makefile b/drivers/media/platform/nxp/Makefile index 4d90eb713652..1325675e34f5 100644 --- a/drivers/media/platform/nxp/Makefile +++ b/drivers/media/platform/nxp/Makefile @@ -9,3 +9,4 @@ obj-$(CONFIG_VIDEO_IMX8MQ_MIPI_CSI2) += imx8mq-mipi-csi2.o obj-$(CONFIG_VIDEO_IMX_MIPI_CSIS) += imx-mipi-csis.o obj-$(CONFIG_VIDEO_IMX_PXP) += imx-pxp.o obj-$(CONFIG_VIDEO_MX2_EMMAPRP) += mx2_emmaprp.o +obj-$(CONFIG_VIDEO_IMX_ASRC) += imx-asrc.o diff --git a/drivers/media/platform/nxp/imx-asrc.c b/drivers/media/platform/nxp/imx-asrc.c new file mode 100644 index 000000000000..0c25a36199b1 --- /dev/null +++ b/drivers/media/platform/nxp/imx-asrc.c @@ -0,0 +1,1256 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Copyright (C) 2014-2016 Freescale Semiconductor, Inc. +// Copyright (C) 2019-2023 NXP +// +// Freescale ASRC Memory to Memory (M2M) driver + +#include <linux/dma/imx-dma.h> +#include <linux/pm_runtime.h> +#include <media/v4l2-ctrls.h> +#include <media/v4l2-device.h> +#include <media/v4l2-event.h> +#include <media/v4l2-fh.h> +#include <media/v4l2-ioctl.h> +#include <media/v4l2-mem2mem.h> +#include <media/videobuf2-dma-contig.h> +#include <sound/dmaengine_pcm.h> +#include <sound/fsl_asrc_common.h> + +#define V4L_CAP OUT +#define V4L_OUT IN + +#define ASRC_xPUT_DMA_CALLBACK(dir) \ + (((dir) == V4L_OUT) ? asrc_input_dma_callback \ + : asrc_output_dma_callback) + +#define DIR_STR(dir) (dir) == V4L_OUT ? "out" : "cap" + +/* Maximum output and capture buffer size */ +#define ASRC_M2M_BUFFER_SIZE (512 * 1024) + +/* Maximum output and capture period size */ +#define ASRC_M2M_PERIOD_SIZE (48 * 1024) + +struct asrc_pair_m2m { + struct fsl_asrc_pair *pair; + struct asrc_m2m *m2m; + struct v4l2_fh fh; + struct v4l2_ctrl_handler ctrl_handler; + int channels[2]; + unsigned int sequence[2]; + s64 src_rate_off_prev; /* Q31.32 */ + s64 dst_rate_off_prev; /* Q31.32 */ + s64 src_rate_off_cur; /* Q31.32 */ + s64 dst_rate_off_cur; /* Q31.32 */ +}; + +struct asrc_m2m { + struct fsl_asrc_m2m_pdata pdata; + struct v4l2_device v4l2_dev; + struct v4l2_m2m_dev *m2m_dev; + struct video_device *dec_vdev; + struct mutex mlock; /* v4l2 ioctls serialization */ + struct platform_device *pdev; +#ifdef CONFIG_MEDIA_CONTROLLER + struct media_device mdev; +#endif +}; + +static u32 formats[] = { + V4L2_AUDIO_FMT_S8, + V4L2_AUDIO_FMT_S16_LE, + V4L2_AUDIO_FMT_U16_LE, + V4L2_AUDIO_FMT_S24_LE, + V4L2_AUDIO_FMT_S24_3LE, + V4L2_AUDIO_FMT_U24_LE, + V4L2_AUDIO_FMT_U24_3LE, + V4L2_AUDIO_FMT_S32_LE, + V4L2_AUDIO_FMT_U32_LE, + V4L2_AUDIO_FMT_S20_3LE, + V4L2_AUDIO_FMT_U20_3LE, + V4L2_AUDIO_FMT_FLOAT_LE, + V4L2_AUDIO_FMT_IEC958_SUBFRAME_LE, +}; + +#define NUM_FORMATS ARRAY_SIZE(formats) + +static const s64 asrc_v1_m2m_rates[] = { + 5512, 8000, 11025, 12000, 16000, + 22050, 24000, 32000, 44100, + 48000, 64000, 88200, 96000, + 128000, 176400, 192000, +}; + +static const s64 asrc_v2_m2m_rates[] = { + 8000, 11025, 12000, 16000, + 22050, 24000, 32000, 44100, + 48000, 64000, 88200, 96000, + 128000, 176400, 192000, 256000, + 352800, 384000, 705600, 768000, +}; + +static u32 find_fourcc(snd_pcm_format_t format) +{ + snd_pcm_format_t fmt; + unsigned int k; + + for (k = 0; k < NUM_FORMATS; k++) { + fmt = v4l2_fourcc_to_audfmt(formats[k]); + if (fmt == format) + return formats[k]; + } + + return 0; +} + +static snd_pcm_format_t find_format(u32 fourcc) +{ + unsigned int k; + + for (k = 0; k < NUM_FORMATS; k++) { + if (formats[k] == fourcc) + return v4l2_fourcc_to_audfmt(formats[k]); + } + + return 0; +} + +static int asrc_check_format(struct asrc_pair_m2m *pair_m2m, u8 dir, u32 format) +{ + struct asrc_m2m *m2m = pair_m2m->m2m; + struct fsl_asrc_m2m_pdata *pdata = &m2m->pdata; + struct fsl_asrc_pair *pair = pair_m2m->pair; + snd_pcm_format_t fmt; + u64 format_bit = 0; + int i; + + for (i = 0; i < NUM_FORMATS; ++i) { + if (formats[i] == format) { + fmt = v4l2_fourcc_to_audfmt(formats[i]); + format_bit = pcm_format_to_bits(fmt); + break; + } + } + + if (dir == IN && !(format_bit & pdata->fmt_in)) + return find_fourcc(pair->sample_format[V4L_OUT]); + if (dir == OUT && !(format_bit & pdata->fmt_out)) + return find_fourcc(pair->sample_format[V4L_CAP]); + + return format; +} + +static int asrc_check_channel(struct asrc_pair_m2m *pair_m2m, u8 dir, u32 channels) +{ + struct asrc_m2m *m2m = pair_m2m->m2m; + struct fsl_asrc_m2m_pdata *pdata = &m2m->pdata; + struct fsl_asrc_pair *pair = pair_m2m->pair; + + if (channels < pdata->chan_min || channels > pdata->chan_max) + return pair->channels; + + return channels; +} + +static inline struct asrc_pair_m2m *asrc_m2m_fh_to_ctx(struct v4l2_fh *fh) +{ + return container_of(fh, struct asrc_pair_m2m, fh); +} + +/** + * asrc_read_last_fifo: read all the remaining data from FIFO + * @pair: Structure pointer of fsl_asrc_pair + * @dma_vaddr: virtual address of capture buffer + * @length: payload length of capture buffer + */ +static void asrc_read_last_fifo(struct fsl_asrc_pair *pair, void *dma_vaddr, u32 *length) +{ + struct fsl_asrc *asrc = pair->asrc; + enum asrc_pair_index index = pair->index; + u32 i, reg, size, t_size = 0, width; + u32 *reg32 = NULL; + u16 *reg16 = NULL; + u8 *reg24 = NULL; + + width = snd_pcm_format_physical_width(pair->sample_format[V4L_CAP]); + if (width == 32) + reg32 = dma_vaddr + *length; + else if (width == 16) + reg16 = dma_vaddr + *length; + else + reg24 = dma_vaddr + *length; +retry: + size = asrc->get_output_fifo_size(pair); + if (size + *length > ASRC_M2M_BUFFER_SIZE) + goto end; + + for (i = 0; i < size * pair->channels; i++) { + regmap_read(asrc->regmap, asrc->get_fifo_addr(OUT, index), &reg); + if (reg32) { + *reg32++ = reg; + } else if (reg16) { + *reg16++ = (u16)reg; + } else { + *reg24++ = (u8)reg; + *reg24++ = (u8)(reg >> 8); + *reg24++ = (u8)(reg >> 16); + } + } + t_size += size; + + /* In case there is data left in FIFO */ + if (size) + goto retry; +end: + /* Update payload length */ + if (reg32) + *length += t_size * pair->channels * 4; + else if (reg16) + *length += t_size * pair->channels * 2; + else + *length += t_size * pair->channels * 3; +} + +static int asrc_m2m_start_streaming(struct vb2_queue *q, unsigned int count) +{ + struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q); + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct asrc_m2m *m2m = pair_m2m->m2m; + struct fsl_asrc *asrc = pair->asrc; + struct device *dev = &m2m->pdev->dev; + struct vb2_v4l2_buffer *buf; + bool request_flag = false; + int ret; + + dev_dbg(dev, "Start streaming pair=%p, %d\n", pair, q->type); + + ret = pm_runtime_get_sync(dev); + if (ret < 0) { + dev_err(dev, "Failed to power up asrc\n"); + goto err_pm_runtime; + } + + /* Request asrc pair/context */ + if (!pair->req_pair) { + /* flag for error handler of this function */ + request_flag = true; + + ret = asrc->request_pair(pair->channels, pair); + if (ret) { + dev_err(dev, "failed to request pair: %d\n", ret); + goto err_request_pair; + } + + ret = asrc->m2m_prepare(pair); + if (ret) { + dev_err(dev, "failed to start pair part one: %d\n", ret); + goto err_start_part_one; + } + + pair->req_pair = true; + } + + /* Request dma channels */ + if (V4L2_TYPE_IS_OUTPUT(q->type)) { + pair_m2m->sequence[V4L_OUT] = 0; + pair->dma_chan[V4L_OUT] = asrc->get_dma_channel(pair, IN); + if (!pair->dma_chan[V4L_OUT]) { + dev_err(dev, "[ctx%d] failed to get input DMA channel\n", pair->index); + ret = -EBUSY; + goto err_dma_channel; + } + } else { + pair_m2m->sequence[V4L_CAP] = 0; + pair->dma_chan[V4L_CAP] = asrc->get_dma_channel(pair, OUT); + if (!pair->dma_chan[V4L_CAP]) { + dev_err(dev, "[ctx%d] failed to get output DMA channel\n", pair->index); + ret = -EBUSY; + goto err_dma_channel; + } + } + + v4l2_m2m_update_start_streaming_state(pair_m2m->fh.m2m_ctx, q); + + return 0; + +err_dma_channel: + if (request_flag && asrc->m2m_unprepare) + asrc->m2m_unprepare(pair); +err_start_part_one: + if (request_flag) + asrc->release_pair(pair); +err_request_pair: + pm_runtime_put_sync(dev); +err_pm_runtime: + /* Release buffers */ + if (V4L2_TYPE_IS_OUTPUT(q->type)) { + while ((buf = v4l2_m2m_src_buf_remove(pair_m2m->fh.m2m_ctx))) + v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); + } else { + while ((buf = v4l2_m2m_dst_buf_remove(pair_m2m->fh.m2m_ctx))) + v4l2_m2m_buf_done(buf, VB2_BUF_STATE_QUEUED); + } + return ret; +} + +static void asrc_m2m_stop_streaming(struct vb2_queue *q) +{ + struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q); + struct asrc_m2m *m2m = pair_m2m->m2m; + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct fsl_asrc *asrc = pair->asrc; + struct device *dev = &m2m->pdev->dev; + + dev_dbg(dev, "Stop streaming pair=%p, %d\n", pair, q->type); + + v4l2_m2m_update_stop_streaming_state(pair_m2m->fh.m2m_ctx, q); + + /* Stop & release pair/context */ + if (asrc->m2m_stop) + asrc->m2m_stop(pair); + + if (pair->req_pair) { + if (asrc->m2m_unprepare) + asrc->m2m_unprepare(pair); + asrc->release_pair(pair); + pair->req_pair = false; + } + + /* Release dma channel */ + if (V4L2_TYPE_IS_OUTPUT(q->type)) { + if (pair->dma_chan[V4L_OUT]) + dma_release_channel(pair->dma_chan[V4L_OUT]); + } else { + if (pair->dma_chan[V4L_CAP]) + dma_release_channel(pair->dma_chan[V4L_CAP]); + } + + pm_runtime_put_sync(dev); +} + +static int asrc_m2m_queue_setup(struct vb2_queue *q, + unsigned int *num_buffers, unsigned int *num_planes, + unsigned int sizes[], struct device *alloc_devs[]) +{ + struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(q); + struct fsl_asrc_pair *pair = pair_m2m->pair; + u32 size; + + /* + * The capture buffer size depends on output buffer size + * and the convert ratio. + * + * Here just use a fix length for capture and output buffer. + * User need to care about it. + */ + if (V4L2_TYPE_IS_OUTPUT(q->type)) + size = pair->buf_len[V4L_OUT]; + else + size = pair->buf_len[V4L_CAP]; + + if (*num_planes) + return sizes[0] < size ? -EINVAL : 0; + + *num_planes = 1; + sizes[0] = size; + + return 0; +} + +static void asrc_m2m_buf_queue(struct vb2_buffer *vb) +{ + struct vb2_v4l2_buffer *vbuf = to_vb2_v4l2_buffer(vb); + struct asrc_pair_m2m *pair_m2m = vb2_get_drv_priv(vb->vb2_queue); + + /* queue buffer */ + v4l2_m2m_buf_queue(pair_m2m->fh.m2m_ctx, vbuf); +} + +static const struct vb2_ops asrc_m2m_qops = { + .wait_prepare = vb2_ops_wait_prepare, + .wait_finish = vb2_ops_wait_finish, + .start_streaming = asrc_m2m_start_streaming, + .stop_streaming = asrc_m2m_stop_streaming, + .queue_setup = asrc_m2m_queue_setup, + .buf_queue = asrc_m2m_buf_queue, +}; + +/* Init video buffer queue for src and dst. */ +static int asrc_m2m_queue_init(void *priv, struct vb2_queue *src_vq, + struct vb2_queue *dst_vq) +{ + struct asrc_pair_m2m *pair_m2m = priv; + struct asrc_m2m *m2m = pair_m2m->m2m; + int ret; + + src_vq->type = V4L2_BUF_TYPE_AUDIO_OUTPUT; + src_vq->io_modes = VB2_MMAP | VB2_DMABUF; + src_vq->drv_priv = pair_m2m; + src_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); + src_vq->ops = &asrc_m2m_qops; + src_vq->mem_ops = &vb2_dma_contig_memops; + src_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; + src_vq->lock = &m2m->mlock; + src_vq->dev = &m2m->pdev->dev; + + ret = vb2_queue_init(src_vq); + if (ret) + return ret; + + dst_vq->type = V4L2_BUF_TYPE_AUDIO_CAPTURE; + dst_vq->io_modes = VB2_MMAP | VB2_DMABUF; + dst_vq->drv_priv = pair_m2m; + dst_vq->buf_struct_size = sizeof(struct v4l2_m2m_buffer); + dst_vq->ops = &asrc_m2m_qops; + dst_vq->mem_ops = &vb2_dma_contig_memops; + dst_vq->timestamp_flags = V4L2_BUF_FLAG_TIMESTAMP_COPY; + dst_vq->lock = &m2m->mlock; + dst_vq->dev = &m2m->pdev->dev; + + ret = vb2_queue_init(dst_vq); + return ret; +} + +static int asrc_m2m_op_s_ctrl(struct v4l2_ctrl *ctrl) +{ + struct asrc_pair_m2m *pair_m2m = + container_of(ctrl->handler, struct asrc_pair_m2m, ctrl_handler); + struct fsl_asrc_pair *pair = pair_m2m->pair; + int ret = 0; + + switch (ctrl->id) { + case V4L2_CID_M2M_AUDIO_SOURCE_RATE: + pair->rate[V4L_OUT] = ctrl->qmenu_int[ctrl->val]; + break; + case V4L2_CID_M2M_AUDIO_DEST_RATE: + pair->rate[V4L_CAP] = ctrl->qmenu_int[ctrl->val]; + break; + case V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET: + pair_m2m->src_rate_off_cur = *ctrl->p_new.p_s64; + break; + case V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET: + pair_m2m->dst_rate_off_cur = *ctrl->p_new.p_s64; + break; + default: + ret = -EINVAL; + break; + } + + return ret; +} + +static const struct v4l2_ctrl_ops asrc_m2m_ctrl_ops = { + .s_ctrl = asrc_m2m_op_s_ctrl, +}; + +static const struct v4l2_ctrl_config asrc_src_rate_off_control = { + .ops = &asrc_m2m_ctrl_ops, + .id = V4L2_CID_M2M_AUDIO_SOURCE_RATE_OFFSET, + .name = "Audio Source Sample Rate Offset", + .type = V4L2_CTRL_TYPE_INTEGER64, + .min = v4l2_ctrl_fp_compose(-128, 0, 32), + .max = v4l2_ctrl_fp_compose(127, 0xffffffff, 32), + .def = 0, + .step = 1, + .fraction_bits = 32, +}; + +static const struct v4l2_ctrl_config asrc_dst_rate_off_control = { + .ops = &asrc_m2m_ctrl_ops, + .id = V4L2_CID_M2M_AUDIO_DEST_RATE_OFFSET, + .name = "Audio Dest Sample Rate Offset", + .type = V4L2_CTRL_TYPE_INTEGER64, + .min = v4l2_ctrl_fp_compose(-128, 0, 32), + .max = v4l2_ctrl_fp_compose(127, 0xffffffff, 32), + .def = 0, + .step = 1, + .fraction_bits = 32, +}; + +/* system callback for open() */ +static int asrc_m2m_open(struct file *file) +{ + struct asrc_m2m *m2m = video_drvdata(file); + struct fsl_asrc *asrc = m2m->pdata.asrc; + struct video_device *vdev = video_devdata(file); + struct fsl_asrc_pair *pair; + struct asrc_pair_m2m *pair_m2m; + int ret = 0; + + if (mutex_lock_interruptible(&m2m->mlock)) + return -ERESTARTSYS; + + pair = kzalloc(sizeof(*pair) + asrc->pair_priv_size, GFP_KERNEL); + if (!pair) { + ret = -ENOMEM; + goto err_alloc_pair; + } + + pair_m2m = kzalloc(sizeof(*pair_m2m), GFP_KERNEL); + if (!pair_m2m) { + ret = -ENOMEM; + goto err_alloc_pair_m2m; + } + + pair->private = (void *)pair + sizeof(struct fsl_asrc_pair); + pair->asrc = asrc; + + pair->buf_len[V4L_OUT] = ASRC_M2M_BUFFER_SIZE; + pair->buf_len[V4L_CAP] = ASRC_M2M_BUFFER_SIZE; + + pair->channels = 2; + pair->rate[V4L_OUT] = 8000; + pair->rate[V4L_CAP] = 8000; + pair->sample_format[V4L_OUT] = SNDRV_PCM_FORMAT_S16_LE; + pair->sample_format[V4L_CAP] = SNDRV_PCM_FORMAT_S16_LE; + + init_completion(&pair->complete[V4L_OUT]); + init_completion(&pair->complete[V4L_CAP]); + + v4l2_fh_init(&pair_m2m->fh, vdev); + v4l2_fh_add(&pair_m2m->fh); + file->private_data = &pair_m2m->fh; + + pair_m2m->pair = pair; + pair_m2m->m2m = m2m; + /* m2m context init */ + pair_m2m->fh.m2m_ctx = v4l2_m2m_ctx_init(m2m->m2m_dev, pair_m2m, + asrc_m2m_queue_init); + if (IS_ERR(pair_m2m->fh.m2m_ctx)) { + ret = PTR_ERR(pair_m2m->fh.m2m_ctx); + goto err_ctx_init; + } + + v4l2_ctrl_handler_init(&pair_m2m->ctrl_handler, 4); + + if (m2m->pdata.rate_min == 5512) { + v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops, + V4L2_CID_M2M_AUDIO_SOURCE_RATE, + ARRAY_SIZE(asrc_v1_m2m_rates) - 1, 1, asrc_v1_m2m_rates); + v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops, + V4L2_CID_M2M_AUDIO_DEST_RATE, + ARRAY_SIZE(asrc_v1_m2m_rates) - 1, 1, asrc_v1_m2m_rates); + } else { + v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops, + V4L2_CID_M2M_AUDIO_SOURCE_RATE, + ARRAY_SIZE(asrc_v2_m2m_rates) - 1, 0, asrc_v2_m2m_rates); + v4l2_ctrl_new_int_menu(&pair_m2m->ctrl_handler, &asrc_m2m_ctrl_ops, + V4L2_CID_M2M_AUDIO_DEST_RATE, + ARRAY_SIZE(asrc_v2_m2m_rates) - 1, 0, asrc_v2_m2m_rates); + } + + v4l2_ctrl_new_custom(&pair_m2m->ctrl_handler, &asrc_src_rate_off_control, NULL); + v4l2_ctrl_new_custom(&pair_m2m->ctrl_handler, &asrc_dst_rate_off_control, NULL); + + if (pair_m2m->ctrl_handler.error) { + ret = pair_m2m->ctrl_handler.error; + v4l2_ctrl_handler_free(&pair_m2m->ctrl_handler); + goto err_ctrl_handler; + } + + pair_m2m->fh.ctrl_handler = &pair_m2m->ctrl_handler; + + mutex_unlock(&m2m->mlock); + + return 0; + +err_ctrl_handler: + v4l2_m2m_ctx_release(pair_m2m->fh.m2m_ctx); +err_ctx_init: + v4l2_fh_del(&pair_m2m->fh); + v4l2_fh_exit(&pair_m2m->fh); + kfree(pair_m2m); +err_alloc_pair_m2m: + kfree(pair); +err_alloc_pair: + mutex_unlock(&m2m->mlock); + return ret; +} + +static int asrc_m2m_release(struct file *file) +{ + struct asrc_m2m *m2m = video_drvdata(file); + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(file->private_data); + struct fsl_asrc_pair *pair = pair_m2m->pair; + + mutex_lock(&m2m->mlock); + v4l2_ctrl_handler_free(&pair_m2m->ctrl_handler); + v4l2_m2m_ctx_release(pair_m2m->fh.m2m_ctx); + v4l2_fh_del(&pair_m2m->fh); + v4l2_fh_exit(&pair_m2m->fh); + kfree(pair_m2m); + kfree(pair); + mutex_unlock(&m2m->mlock); + + return 0; +} + +static const struct v4l2_file_operations asrc_m2m_fops = { + .owner = THIS_MODULE, + .open = asrc_m2m_open, + .release = asrc_m2m_release, + .poll = v4l2_m2m_fop_poll, + .unlocked_ioctl = video_ioctl2, + .mmap = v4l2_m2m_fop_mmap, +}; + +static int asrc_m2m_querycap(struct file *file, void *priv, + struct v4l2_capability *cap) +{ + strscpy(cap->driver, M2M_DRV_NAME, sizeof(cap->driver)); + strscpy(cap->card, M2M_DRV_NAME, sizeof(cap->card)); + cap->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_AUDIO_M2M; + + return 0; +} + +static int enum_fmt(struct v4l2_fmtdesc *f, u64 fmtbit) +{ + snd_pcm_format_t fmt; + int i, num; + + num = 0; + + for (i = 0; i < NUM_FORMATS; ++i) { + fmt = v4l2_fourcc_to_audfmt(formats[i]); + if (pcm_format_to_bits(fmt) & fmtbit) { + if (num == f->index) + break; + /* + * Correct type but haven't reached our index yet, + * just increment per-type index + */ + ++num; + } + } + + if (i < NUM_FORMATS) { + /* Format found */ + f->pixelformat = formats[i]; + return 0; + } + + return -EINVAL; +} + +static int asrc_m2m_enum_fmt_aud_cap(struct file *file, void *fh, + struct v4l2_fmtdesc *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct asrc_m2m *m2m = pair_m2m->m2m; + + return enum_fmt(f, m2m->pdata.fmt_out); +} + +static int asrc_m2m_enum_fmt_aud_out(struct file *file, void *fh, + struct v4l2_fmtdesc *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct asrc_m2m *m2m = pair_m2m->m2m; + + return enum_fmt(f, m2m->pdata.fmt_in); +} + +static int asrc_m2m_g_fmt_aud_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct fsl_asrc_pair *pair = pair_m2m->pair; + + f->fmt.audio.channels = pair->channels; + f->fmt.audio.buffersize = pair->buf_len[V4L_CAP]; + f->fmt.audio.audioformat = find_fourcc(pair->sample_format[V4L_CAP]); + + return 0; +} + +static int asrc_m2m_g_fmt_aud_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct fsl_asrc_pair *pair = pair_m2m->pair; + + f->fmt.audio.channels = pair->channels; + f->fmt.audio.buffersize = pair->buf_len[V4L_OUT]; + f->fmt.audio.audioformat = find_fourcc(pair->sample_format[V4L_OUT]); + + return 0; +} + +/* output for asrc */ +static int asrc_m2m_s_fmt_aud_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct asrc_m2m *m2m = pair_m2m->m2m; + struct device *dev = &m2m->pdev->dev; + + f->fmt.audio.audioformat = asrc_check_format(pair_m2m, OUT, f->fmt.audio.audioformat); + f->fmt.audio.channels = asrc_check_channel(pair_m2m, OUT, f->fmt.audio.channels); + + if (pair_m2m->channels[V4L_CAP] > 0 && + pair_m2m->channels[V4L_CAP] != f->fmt.audio.channels) { + dev_err(dev, "channels don't match for cap and out\n"); + return -EINVAL; + } + + pair_m2m->channels[V4L_CAP] = f->fmt.audio.channels; + pair->channels = f->fmt.audio.channels; + pair->sample_format[V4L_CAP] = find_format(f->fmt.audio.audioformat); + + return 0; +} + +/* input for asrc */ +static int asrc_m2m_s_fmt_aud_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct asrc_m2m *m2m = pair_m2m->m2m; + struct device *dev = &m2m->pdev->dev; + + f->fmt.audio.audioformat = asrc_check_format(pair_m2m, IN, f->fmt.audio.audioformat); + f->fmt.audio.channels = asrc_check_channel(pair_m2m, IN, f->fmt.audio.channels); + if (pair_m2m->channels[V4L_OUT] > 0 && + pair_m2m->channels[V4L_OUT] != f->fmt.audio.channels) { + dev_err(dev, "channels don't match for cap and out\n"); + return -EINVAL; + } + + pair_m2m->channels[V4L_OUT] = f->fmt.audio.channels; + pair->channels = f->fmt.audio.channels; + pair->sample_format[V4L_OUT] = find_format(f->fmt.audio.audioformat); + + return 0; +} + +static int asrc_m2m_try_fmt_audio_cap(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + + f->fmt.audio.audioformat = asrc_check_format(pair_m2m, OUT, f->fmt.audio.audioformat); + f->fmt.audio.channels = asrc_check_channel(pair_m2m, OUT, f->fmt.audio.channels); + + return 0; +} + +static int asrc_m2m_try_fmt_audio_out(struct file *file, void *fh, + struct v4l2_format *f) +{ + struct asrc_pair_m2m *pair_m2m = asrc_m2m_fh_to_ctx(fh); + + f->fmt.audio.audioformat = asrc_check_format(pair_m2m, IN, f->fmt.audio.audioformat); + f->fmt.audio.channels = asrc_check_channel(pair_m2m, IN, f->fmt.audio.channels); + + return 0; +} + +static const struct v4l2_ioctl_ops asrc_m2m_ioctl_ops = { + .vidioc_querycap = asrc_m2m_querycap, + + .vidioc_enum_fmt_audio_cap = asrc_m2m_enum_fmt_aud_cap, + .vidioc_enum_fmt_audio_out = asrc_m2m_enum_fmt_aud_out, + + .vidioc_g_fmt_audio_cap = asrc_m2m_g_fmt_aud_cap, + .vidioc_g_fmt_audio_out = asrc_m2m_g_fmt_aud_out, + + .vidioc_s_fmt_audio_cap = asrc_m2m_s_fmt_aud_cap, + .vidioc_s_fmt_audio_out = asrc_m2m_s_fmt_aud_out, + + .vidioc_try_fmt_audio_cap = asrc_m2m_try_fmt_audio_cap, + .vidioc_try_fmt_audio_out = asrc_m2m_try_fmt_audio_out, + + .vidioc_qbuf = v4l2_m2m_ioctl_qbuf, + .vidioc_dqbuf = v4l2_m2m_ioctl_dqbuf, + + .vidioc_create_bufs = v4l2_m2m_ioctl_create_bufs, + .vidioc_prepare_buf = v4l2_m2m_ioctl_prepare_buf, + .vidioc_reqbufs = v4l2_m2m_ioctl_reqbufs, + .vidioc_querybuf = v4l2_m2m_ioctl_querybuf, + .vidioc_streamon = v4l2_m2m_ioctl_streamon, + .vidioc_streamoff = v4l2_m2m_ioctl_streamoff, + .vidioc_subscribe_event = v4l2_ctrl_subscribe_event, + .vidioc_unsubscribe_event = v4l2_event_unsubscribe, +}; + +/* dma complete callback */ +static void asrc_input_dma_callback(void *data) +{ + struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data; + + complete(&pair->complete[V4L_OUT]); +} + +/* dma complete callback */ +static void asrc_output_dma_callback(void *data) +{ + struct fsl_asrc_pair *pair = (struct fsl_asrc_pair *)data; + + complete(&pair->complete[V4L_CAP]); +} + +/* config dma channel */ +static int asrc_dmaconfig(struct asrc_pair_m2m *pair_m2m, + struct dma_chan *chan, + u32 dma_addr, dma_addr_t buf_addr, u32 buf_len, + int dir, int width) +{ + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct fsl_asrc *asrc = pair->asrc; + struct asrc_m2m *m2m = pair_m2m->m2m; + struct device *dev = &m2m->pdev->dev; + struct dma_slave_config slave_config; + enum dma_slave_buswidth buswidth; + unsigned int sg_len, max_period_size; + struct scatterlist *sg; + int ret, i; + + switch (width) { + case 8: + buswidth = DMA_SLAVE_BUSWIDTH_1_BYTE; + break; + case 16: + buswidth = DMA_SLAVE_BUSWIDTH_2_BYTES; + break; + case 24: + buswidth = DMA_SLAVE_BUSWIDTH_3_BYTES; + break; + case 32: + buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES; + break; + default: + dev_err(dev, "invalid word width\n"); + return -EINVAL; + } + + memset(&slave_config, 0, sizeof(slave_config)); + if (dir == V4L_OUT) { + slave_config.direction = DMA_MEM_TO_DEV; + slave_config.dst_addr = dma_addr; + slave_config.dst_addr_width = buswidth; + slave_config.dst_maxburst = asrc->m2m_get_maxburst(IN, pair); + } else { + slave_config.direction = DMA_DEV_TO_MEM; + slave_config.src_addr = dma_addr; + slave_config.src_addr_width = buswidth; + slave_config.src_maxburst = asrc->m2m_get_maxburst(OUT, pair); + } + + ret = dmaengine_slave_config(chan, &slave_config); + if (ret) { + dev_err(dev, "failed to config dmaengine for %s task: %d\n", + DIR_STR(dir), ret); + return -EINVAL; + } + + max_period_size = rounddown(ASRC_M2M_PERIOD_SIZE, width * pair->channels / 8); + /* scatter gather mode */ + sg_len = buf_len / max_period_size; + if (buf_len % max_period_size) + sg_len += 1; + + sg = kmalloc_array(sg_len, sizeof(*sg), GFP_KERNEL); + if (!sg) + return -ENOMEM; + + sg_init_table(sg, sg_len); + for (i = 0; i < (sg_len - 1); i++) { + sg_dma_address(&sg[i]) = buf_addr + i * max_period_size; + sg_dma_len(&sg[i]) = max_period_size; + } + sg_dma_address(&sg[i]) = buf_addr + i * max_period_size; + sg_dma_len(&sg[i]) = buf_len - i * max_period_size; + + pair->desc[dir] = dmaengine_prep_slave_sg(chan, sg, sg_len, + slave_config.direction, + DMA_PREP_INTERRUPT); + kfree(sg); + if (!pair->desc[dir]) { + dev_err(dev, "failed to prepare dmaengine for %s task\n", DIR_STR(dir)); + return -EINVAL; + } + + pair->desc[dir]->callback = ASRC_xPUT_DMA_CALLBACK(dir); + pair->desc[dir]->callback_param = pair; + + return 0; +} + +static void asrc_m2m_set_ratio_mod(struct asrc_pair_m2m *pair_m2m) +{ + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct fsl_asrc *asrc = pair->asrc; + s32 src_rate_int, dst_rate_int; + s64 src_rate_frac; + s64 dst_rate_frac; + u64 src_rate, dst_rate; + u64 ratio_pre, ratio_cur; + s64 ratio_diff; + + if (!asrc->m2m_set_ratio_mod) + return; + + if (pair_m2m->src_rate_off_cur == pair_m2m->src_rate_off_prev && + pair_m2m->dst_rate_off_cur == pair_m2m->dst_rate_off_prev) + return; + + /* + * use maximum rate 768kHz as limitation, then we can shift right 21 bit for + * division + */ + src_rate_int = pair->rate[V4L_OUT]; + src_rate_frac = pair_m2m->src_rate_off_prev; + + src_rate = ((s64)src_rate_int << 32) + src_rate_frac; + + dst_rate_int = pair->rate[V4L_CAP]; + dst_rate_frac = pair_m2m->dst_rate_off_prev; + + dst_rate = ((s64)dst_rate_int << 32) + dst_rate_frac; + dst_rate >>= 21; + do_div(src_rate, dst_rate); + ratio_pre = src_rate; + + src_rate_frac = pair_m2m->src_rate_off_cur; + src_rate = ((s64)src_rate_int << 32) + src_rate_frac; + + dst_rate_frac = pair_m2m->dst_rate_off_cur; + dst_rate = ((s64)dst_rate_int << 32) + dst_rate_frac; + dst_rate >>= 21; + do_div(src_rate, dst_rate); + ratio_cur = src_rate; + + ratio_diff = ratio_cur - ratio_pre; + asrc->m2m_set_ratio_mod(pair, ratio_diff << 10); + + pair_m2m->src_rate_off_prev = pair_m2m->src_rate_off_cur; + pair_m2m->dst_rate_off_prev = pair_m2m->dst_rate_off_cur; +} + +/* main function of converter */ +static void asrc_m2m_device_run(void *priv) +{ + struct asrc_pair_m2m *pair_m2m = priv; + struct fsl_asrc_pair *pair = pair_m2m->pair; + struct asrc_m2m *m2m = pair_m2m->m2m; + struct fsl_asrc *asrc = pair->asrc; + struct device *dev = &m2m->pdev->dev; + enum asrc_pair_index index = pair->index; + struct vb2_v4l2_buffer *src_buf, *dst_buf; + unsigned int out_buf_len; + unsigned int cap_dma_len; + unsigned int width; + u32 fifo_addr; + int ret; + + /* set ratio mod */ + asrc_m2m_set_ratio_mod(pair_m2m); + + src_buf = v4l2_m2m_next_src_buf(pair_m2m->fh.m2m_ctx); + dst_buf = v4l2_m2m_next_dst_buf(pair_m2m->fh.m2m_ctx); + + src_buf->sequence = pair_m2m->sequence[V4L_OUT]++; + dst_buf->sequence = pair_m2m->sequence[V4L_CAP]++; + + width = snd_pcm_format_physical_width(pair->sample_format[V4L_OUT]); + fifo_addr = asrc->paddr + asrc->get_fifo_addr(IN, index); + out_buf_len = vb2_get_plane_payload(&src_buf->vb2_buf, 0); + if (out_buf_len < width * pair->channels / 8 || + out_buf_len > ASRC_M2M_BUFFER_SIZE || + out_buf_len % (width * pair->channels / 8)) { + dev_err(dev, "out buffer size is error: [%d]\n", out_buf_len); + goto end; + } + + /* dma config for output dma channel */ + ret = asrc_dmaconfig(pair_m2m, + pair->dma_chan[V4L_OUT], + fifo_addr, + vb2_dma_contig_plane_dma_addr(&src_buf->vb2_buf, 0), + out_buf_len, V4L_OUT, width); + if (ret) { + dev_err(dev, "out dma config error\n"); + goto end; + } + + width = snd_pcm_format_physical_width(pair->sample_format[V4L_CAP]); + fifo_addr = asrc->paddr + asrc->get_fifo_addr(OUT, index); + cap_dma_len = asrc->m2m_calc_out_len(pair, out_buf_len); + if (cap_dma_len > 0 && cap_dma_len <= ASRC_M2M_BUFFER_SIZE) { + /* dma config for capture dma channel */ + ret = asrc_dmaconfig(pair_m2m, + pair->dma_chan[V4L_CAP], + fifo_addr, + vb2_dma_contig_plane_dma_addr(&dst_buf->vb2_buf, 0), + cap_dma_len, V4L_CAP, width); + if (ret) { + dev_err(dev, "cap dma config error\n"); + goto end; + } + } else if (cap_dma_len > ASRC_M2M_BUFFER_SIZE) { + dev_err(dev, "cap buffer size error\n"); + goto end; + } + + reinit_completion(&pair->complete[V4L_OUT]); + reinit_completion(&pair->complete[V4L_CAP]); + + /* Submit DMA request */ + dmaengine_submit(pair->desc[V4L_OUT]); + dma_async_issue_pending(pair->desc[V4L_OUT]->chan); + if (cap_dma_len > 0) { + dmaengine_submit(pair->desc[V4L_CAP]); + dma_async_issue_pending(pair->desc[V4L_CAP]->chan); + } + + asrc->m2m_start(pair); + + if (!wait_for_completion_interruptible_timeout(&pair->complete[V4L_OUT], 10 * HZ)) { + dev_err(dev, "out DMA task timeout\n"); + goto end; + } + + if (cap_dma_len > 0) { + if (!wait_for_completion_interruptible_timeout(&pair->complete[V4L_CAP], 10 * HZ)) { + dev_err(dev, "cap DMA task timeout\n"); + goto end; + } + } + + /* read the last words from FIFO */ + asrc_read_last_fifo(pair, vb2_plane_vaddr(&dst_buf->vb2_buf, 0), &cap_dma_len); + /* update payload length for capture */ + vb2_set_plane_payload(&dst_buf->vb2_buf, 0, cap_dma_len); + +end: + src_buf = v4l2_m2m_src_buf_remove(pair_m2m->fh.m2m_ctx); + dst_buf = v4l2_m2m_dst_buf_remove(pair_m2m->fh.m2m_ctx); + + v4l2_m2m_buf_done(src_buf, VB2_BUF_STATE_DONE); + v4l2_m2m_buf_done(dst_buf, VB2_BUF_STATE_DONE); + + v4l2_m2m_job_finish(m2m->m2m_dev, pair_m2m->fh.m2m_ctx); +} + +static int asrc_m2m_job_ready(void *priv) +{ + struct asrc_pair_m2m *pair_m2m = priv; + + if (v4l2_m2m_num_src_bufs_ready(pair_m2m->fh.m2m_ctx) > 0 && + v4l2_m2m_num_dst_bufs_ready(pair_m2m->fh.m2m_ctx) > 0) { + return 1; + } + + return 0; +} + +static const struct v4l2_m2m_ops asrc_m2m_ops = { + .job_ready = asrc_m2m_job_ready, + .device_run = asrc_m2m_device_run, +}; + +static const struct media_device_ops asrc_m2m_media_ops = { + .req_validate = vb2_request_validate, + .req_queue = v4l2_m2m_request_queue, +}; + +static int asrc_m2m_probe(struct platform_device *pdev) +{ + struct fsl_asrc_m2m_pdata *data = pdev->dev.platform_data; + struct device *dev = &pdev->dev; + struct asrc_m2m *m2m; + int ret; + + m2m = devm_kzalloc(dev, sizeof(*m2m), GFP_KERNEL); + if (!m2m) + return -ENOMEM; + + m2m->pdata = *data; + m2m->pdev = pdev; + + ret = v4l2_device_register(dev, &m2m->v4l2_dev); + if (ret) { + dev_err(dev, "failed to register v4l2 device\n"); + goto err_register; + } + + m2m->m2m_dev = v4l2_m2m_init(&asrc_m2m_ops); + if (IS_ERR(m2m->m2m_dev)) { + ret = PTR_ERR(m2m->m2m_dev); + dev_err_probe(dev, ret, "failed to register v4l2 device\n"); + goto err_m2m; + } + + m2m->dec_vdev = video_device_alloc(); + if (!m2m->dec_vdev) { + ret = -ENOMEM; + goto err_vdev_alloc; + } + + mutex_init(&m2m->mlock); + + m2m->dec_vdev->fops = &asrc_m2m_fops; + m2m->dec_vdev->ioctl_ops = &asrc_m2m_ioctl_ops; + m2m->dec_vdev->minor = -1; + m2m->dec_vdev->release = video_device_release; + m2m->dec_vdev->lock = &m2m->mlock; /* lock for ioctl serialization */ + m2m->dec_vdev->v4l2_dev = &m2m->v4l2_dev; + m2m->dec_vdev->vfl_dir = VFL_DIR_M2M; + m2m->dec_vdev->device_caps = V4L2_CAP_STREAMING | V4L2_CAP_AUDIO_M2M; + +#ifdef CONFIG_MEDIA_CONTROLLER + m2m->mdev.dev = &pdev->dev; + strscpy(m2m->mdev.model, M2M_DRV_NAME, sizeof(m2m->mdev.model)); + media_device_init(&m2m->mdev); + m2m->mdev.ops = &asrc_m2m_media_ops; + m2m->v4l2_dev.mdev = &m2m->mdev; +#endif + + ret = video_register_device(m2m->dec_vdev, VFL_TYPE_AUDIO, -1); + if (ret) { + dev_err_probe(dev, ret, "failed to register video device\n"); + goto err_vdev_register; + } + +#ifdef CONFIG_MEDIA_CONTROLLER + ret = v4l2_m2m_register_media_controller(m2m->m2m_dev, m2m->dec_vdev, + MEDIA_ENT_F_PROC_AUDIO_RESAMPLER); + if (ret) { + dev_err_probe(dev, ret, "Failed to init mem2mem media controller\n"); + goto error_v4l2; + } + + ret = media_device_register(&m2m->mdev); + if (ret) { + dev_err_probe(dev, ret, "Failed to register mem2mem media device\n"); + goto error_m2m_mc; + } +#endif + + video_set_drvdata(m2m->dec_vdev, m2m); + platform_set_drvdata(pdev, m2m); + pm_runtime_enable(&pdev->dev); + + return 0; + +#ifdef CONFIG_MEDIA_CONTROLLER +error_m2m_mc: + v4l2_m2m_unregister_media_controller(m2m->m2m_dev); +#endif +error_v4l2: + video_unregister_device(m2m->dec_vdev); +err_vdev_register: + video_device_release(m2m->dec_vdev); +err_vdev_alloc: + v4l2_m2m_release(m2m->m2m_dev); +err_m2m: + v4l2_device_unregister(&m2m->v4l2_dev); +err_register: + return ret; +} + +static void asrc_m2m_remove(struct platform_device *pdev) +{ + struct asrc_m2m *m2m = platform_get_drvdata(pdev); + + pm_runtime_disable(&pdev->dev); +#ifdef CONFIG_MEDIA_CONTROLLER + media_device_unregister(&m2m->mdev); + v4l2_m2m_unregister_media_controller(m2m->m2m_dev); +#endif + video_unregister_device(m2m->dec_vdev); + video_device_release(m2m->dec_vdev); + v4l2_m2m_release(m2m->m2m_dev); + v4l2_device_unregister(&m2m->v4l2_dev); +} + +#ifdef CONFIG_PM_SLEEP +/* suspend callback for m2m */ +static int asrc_m2m_suspend(struct device *dev) +{ + struct asrc_m2m *m2m = dev_get_drvdata(dev); + struct fsl_asrc *asrc = m2m->pdata.asrc; + struct fsl_asrc_pair *pair; + unsigned long lock_flags; + int i; + + for (i = 0; i < PAIR_CTX_NUM; i++) { + spin_lock_irqsave(&asrc->lock, lock_flags); + pair = asrc->pair[i]; + if (!pair || !pair->req_pair) { + spin_unlock_irqrestore(&asrc->lock, lock_flags); + continue; + } + if (!completion_done(&pair->complete[V4L_OUT])) { + if (pair->dma_chan[V4L_OUT]) + dmaengine_terminate_all(pair->dma_chan[V4L_OUT]); + asrc_input_dma_callback((void *)pair); + } + if (!completion_done(&pair->complete[V4L_CAP])) { + if (pair->dma_chan[V4L_CAP]) + dmaengine_terminate_all(pair->dma_chan[V4L_CAP]); + asrc_output_dma_callback((void *)pair); + } + + if (asrc->m2m_pair_suspend) + asrc->m2m_pair_suspend(pair); + + spin_unlock_irqrestore(&asrc->lock, lock_flags); + } + + return 0; +} + +static int asrc_m2m_resume(struct device *dev) +{ + struct asrc_m2m *m2m = dev_get_drvdata(dev); + struct fsl_asrc *asrc = m2m->pdata.asrc; + struct fsl_asrc_pair *pair; + unsigned long lock_flags; + int i; + + for (i = 0; i < PAIR_CTX_NUM; i++) { + spin_lock_irqsave(&asrc->lock, lock_flags); + pair = asrc->pair[i]; + if (!pair || !pair->req_pair) { + spin_unlock_irqrestore(&asrc->lock, lock_flags); + continue; + } + if (asrc->m2m_pair_resume) + asrc->m2m_pair_resume(pair); + + spin_unlock_irqrestore(&asrc->lock, lock_flags); + } + + return 0; +} +#endif + +static const struct dev_pm_ops asrc_m2m_pm_ops = { + SET_NOIRQ_SYSTEM_SLEEP_PM_OPS(asrc_m2m_suspend, + asrc_m2m_resume) +}; + +static const struct platform_device_id asrc_m2m_driver_ids[] __always_unused = { + { .name = M2M_DRV_NAME }, + { }, +}; +MODULE_DEVICE_TABLE(platform, asrc_m2m_driver_ids); + +static struct platform_driver asrc_m2m_driver = { + .probe = asrc_m2m_probe, + .remove_new = asrc_m2m_remove, + .id_table = asrc_m2m_driver_ids, + .driver = { + .name = M2M_DRV_NAME, + .pm = &asrc_m2m_pm_ops, + }, +}; +module_platform_driver(asrc_m2m_driver); + +MODULE_DESCRIPTION("Freescale ASRC M2M driver"); +MODULE_LICENSE("GPL");