Re: [PATCH 16/17] media: camss: add support for SM8250 camss

From: Robert Foss
Date: Thu Jun 10 2021 - 04:03:37 EST

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In reply to: Jonathan Marek: "[PATCH 16/17] media: camss: add support for SM8250 camss"
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Hey Jonathan,

On Wed, 9 Jun 2021 at 00:38, Jonathan Marek <jonathan@xxxxxxxx> wrote:
>
> The Titan 480 camss found on SM8250 has 6 CSIPHY and 4 VFE/CSID.
>
> CSID is compatible with the Titan 170 CSID, but the Titan 480 CSID are
> inside the VFE region (between the "top" and "bus" registers), so a
> workaround is added to avoid ioremap failure.
>
> Signed-off-by: Jonathan Marek <jonathan@xxxxxxxx>
> Reviewed-by: Robert Foss <robert.foss@xxxxxxxxxx>
> ---
> drivers/media/platform/qcom/camss/Makefile | 2 +-
> .../{camss-csid-170.c => camss-csid-gen2.c} | 2 +-
> .../media/platform/qcom/camss/camss-csid.c | 28 ++-
> .../media/platform/qcom/camss/camss-csid.h | 2 +-
> .../media/platform/qcom/camss/camss-csiphy.c | 8 +-
> drivers/media/platform/qcom/camss/camss-vfe.c | 9 +-
> .../media/platform/qcom/camss/camss-video.c | 3 +-
> drivers/media/platform/qcom/camss/camss.c | 199 ++++++++++++++++--
> 8 files changed, 227 insertions(+), 26 deletions(-)
> rename drivers/media/platform/qcom/camss/{camss-csid-170.c => camss-csid-gen2.c} (99%)
>
> diff --git a/drivers/media/platform/qcom/camss/Makefile b/drivers/media/platform/qcom/camss/Makefile
> index 81dd56aff0f27..4e22223589739 100644
> --- a/drivers/media/platform/qcom/camss/Makefile
> +++ b/drivers/media/platform/qcom/camss/Makefile
> @@ -6,7 +6,7 @@ qcom-camss-objs += \
> camss-csid.o \
> camss-csid-4-1.o \
> camss-csid-4-7.o \
> - camss-csid-170.o \
> + camss-csid-gen2.o \
> camss-csiphy-2ph-1-0.o \
> camss-csiphy-3ph-1-0.o \
> camss-csiphy.o \
> diff --git a/drivers/media/platform/qcom/camss/camss-csid-170.c b/drivers/media/platform/qcom/camss/camss-csid-gen2.c
> similarity index 99%
> rename from drivers/media/platform/qcom/camss/camss-csid-170.c
> rename to drivers/media/platform/qcom/camss/camss-csid-gen2.c
> index 9e54d251793fc..abbfbf4488934 100644
> --- a/drivers/media/platform/qcom/camss/camss-csid-170.c
> +++ b/drivers/media/platform/qcom/camss/camss-csid-gen2.c
> @@ -594,7 +594,7 @@ static void csid_subdev_init(struct csid_device *csid)
> csid->testgen.nmodes = CSID_PAYLOAD_MODE_NUM_SUPPORTED_GEN2;
> }
>
> -const struct csid_hw_ops csid_ops_170 = {
> +const struct csid_hw_ops csid_ops_gen2 = {
> .configure_stream = csid_configure_stream,
> .configure_testgen_pattern = csid_configure_testgen_pattern,
> .hw_version = csid_hw_version,
> diff --git a/drivers/media/platform/qcom/camss/camss-csid.c b/drivers/media/platform/qcom/camss/camss-csid.c
> index 528674dea06ca..b4c068a152f73 100644
> --- a/drivers/media/platform/qcom/camss/camss-csid.c
> +++ b/drivers/media/platform/qcom/camss/camss-csid.c
> @@ -25,6 +25,10 @@
> #include "camss-csid-gen1.h"
> #include "camss.h"
>
> +/* offset of CSID registers in VFE region for VFE 480 */
> +#define VFE_480_CSID_OFFSET 0x1200
> +#define VFE_480_LITE_CSID_OFFSET 0x200
> +
> #define MSM_CSID_NAME "msm_csid"
>
> const char * const csid_testgen_modes[] = {
> @@ -560,8 +564,9 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
> } else if (camss->version == CAMSS_8x96 ||
> camss->version == CAMSS_660) {
> csid->ops = &csid_ops_4_7;
> - } else if (camss->version == CAMSS_845) {
> - csid->ops = &csid_ops_170;
> + } else if (camss->version == CAMSS_845 ||
> + camss->version == CAMSS_8250) {
> + csid->ops = &csid_ops_gen2;
> } else {
> return -EINVAL;
> }
> @@ -569,10 +574,21 @@ int msm_csid_subdev_init(struct camss *camss, struct csid_device *csid,
>
> /* Memory */
>
> - r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[0]);
> - csid->base = devm_ioremap_resource(dev, r);
> - if (IS_ERR(csid->base))
> - return PTR_ERR(csid->base);
> + if (camss->version == CAMSS_8250) {
> + /* for titan 480, CSID registers are inside the VFE region,
> + * between the VFE "top" and "bus" registers. this requires
> + * VFE to be initialized before CSID
> + */
> + if (id >= 2) /* VFE/CSID lite */
> + csid->base = camss->vfe[id].base + VFE_480_LITE_CSID_OFFSET;
> + else
> + csid->base = camss->vfe[id].base + VFE_480_CSID_OFFSET;
> + } else {
> + r = platform_get_resource_byname(pdev, IORESOURCE_MEM, res->reg[0]);
> + csid->base = devm_ioremap_resource(dev, r);
> + if (IS_ERR(csid->base))
> + return PTR_ERR(csid->base);
> + }
>
> /* Interrupt */
>
> diff --git a/drivers/media/platform/qcom/camss/camss-csid.h b/drivers/media/platform/qcom/camss/camss-csid.h
> index 814ebc7c29d65..17a50fa426be1 100644
> --- a/drivers/media/platform/qcom/camss/camss-csid.h
> +++ b/drivers/media/platform/qcom/camss/camss-csid.h
> @@ -205,7 +205,7 @@ extern const char * const csid_testgen_modes[];
>
> extern const struct csid_hw_ops csid_ops_4_1;
> extern const struct csid_hw_ops csid_ops_4_7;
> -extern const struct csid_hw_ops csid_ops_170;
> +extern const struct csid_hw_ops csid_ops_gen2;
>
>
> #endif /* QC_MSM_CAMSS_CSID_H */
> diff --git a/drivers/media/platform/qcom/camss/camss-csiphy.c b/drivers/media/platform/qcom/camss/camss-csiphy.c
> index f82f1e2aa6883..1d10c816acf5c 100644
> --- a/drivers/media/platform/qcom/camss/camss-csiphy.c
> +++ b/drivers/media/platform/qcom/camss/camss-csiphy.c
> @@ -582,7 +582,8 @@ int msm_csiphy_subdev_init(struct camss *camss,
> csiphy->ops = &csiphy_ops_3ph_1_0;
> csiphy->formats = csiphy_formats_8x96;
> csiphy->nformats = ARRAY_SIZE(csiphy_formats_8x96);
> - } else if (camss->version == CAMSS_845) {
> + } else if (camss->version == CAMSS_845 ||
> + camss->version == CAMSS_8250) {
> csiphy->ops = &csiphy_ops_3ph_1_0;
> csiphy->formats = csiphy_formats_sdm845;
> csiphy->nformats = ARRAY_SIZE(csiphy_formats_sdm845);
> @@ -679,7 +680,10 @@ int msm_csiphy_subdev_init(struct camss *camss,
>
> if (!strcmp(clock->name, "csiphy0_timer") ||
> !strcmp(clock->name, "csiphy1_timer") ||
> - !strcmp(clock->name, "csiphy2_timer"))
> + !strcmp(clock->name, "csiphy2_timer") ||
> + !strcmp(clock->name, "csiphy3_timer") ||
> + !strcmp(clock->name, "csiphy4_timer") ||
> + !strcmp(clock->name, "csiphy5_timer"))
> csiphy->rate_set[i] = true;
>
> if (camss->version == CAMSS_660 &&
> diff --git a/drivers/media/platform/qcom/camss/camss-vfe.c b/drivers/media/platform/qcom/camss/camss-vfe.c
> index b08bded2344e6..48d05ece0dcc1 100644
> --- a/drivers/media/platform/qcom/camss/camss-vfe.c
> +++ b/drivers/media/platform/qcom/camss/camss-vfe.c
> @@ -220,7 +220,8 @@ static u32 vfe_src_pad_code(struct vfe_line *line, u32 sink_code,
> }
> else if (vfe->camss->version == CAMSS_8x96 ||
> vfe->camss->version == CAMSS_660 ||
> - vfe->camss->version == CAMSS_845)
> + vfe->camss->version == CAMSS_845 ||
> + vfe->camss->version == CAMSS_8250)
> switch (sink_code) {
> case MEDIA_BUS_FMT_YUYV8_2X8:
> {
> @@ -1278,6 +1279,9 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
> case CAMSS_845:
> vfe->ops = &vfe_ops_170;
> break;
> + case CAMSS_8250:
> + vfe->ops = &vfe_ops_480;
> + break;
> default:
> return -EINVAL;
> }
> @@ -1389,7 +1393,8 @@ int msm_vfe_subdev_init(struct camss *camss, struct vfe_device *vfe,
> l->formats = formats_rdi_8x96;
> l->nformats = ARRAY_SIZE(formats_rdi_8x96);
> }
> - } else if (camss->version == CAMSS_845) {
> + } else if (camss->version == CAMSS_845 ||
> + camss->version == CAMSS_8250) {
> l->formats = formats_rdi_845;
> l->nformats = ARRAY_SIZE(formats_rdi_845);
> } else {
> diff --git a/drivers/media/platform/qcom/camss/camss-video.c b/drivers/media/platform/qcom/camss/camss-video.c
> index 54e77d30d452c..5dc1ddbe6d658 100644
> --- a/drivers/media/platform/qcom/camss/camss-video.c
> +++ b/drivers/media/platform/qcom/camss/camss-video.c
> @@ -1011,7 +1011,8 @@ int msm_video_register(struct camss_video *video, struct v4l2_device *v4l2_dev,
> video->formats = formats_rdi_8x96;
> video->nformats = ARRAY_SIZE(formats_rdi_8x96);
> }
> - } else if (video->camss->version == CAMSS_845) {
> + } else if (video->camss->version == CAMSS_845 ||
> + video->camss->version == CAMSS_8250) {
> video->formats = formats_rdi_845;
> video->nformats = ARRAY_SIZE(formats_rdi_845);
> } else {
> diff --git a/drivers/media/platform/qcom/camss/camss.c b/drivers/media/platform/qcom/camss/camss.c
> index c08d6d6f6f90d..14a1a6e524345 100644
> --- a/drivers/media/platform/qcom/camss/camss.c
> +++ b/drivers/media/platform/qcom/camss/camss.c
> @@ -662,6 +662,165 @@ static const struct resources vfe_res_845[] = {
> }
> };
>
> +static const struct resources csiphy_res_8250[] = {
> + /* CSIPHY0 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy0", "csiphy0_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy0" },
> + .interrupt = { "csiphy0" }
> + },
> + /* CSIPHY1 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy1", "csiphy1_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy1" },
> + .interrupt = { "csiphy1" }
> + },
> + /* CSIPHY2 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy2", "csiphy2_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy2" },
> + .interrupt = { "csiphy2" }
> + },
> + /* CSIPHY3 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy3", "csiphy3_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy3" },
> + .interrupt = { "csiphy3" }
> + },
> + /* CSIPHY4 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy4", "csiphy4_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy4" },
> + .interrupt = { "csiphy4" }
> + },
> + /* CSIPHY5 */
> + {
> + .regulator = { NULL },
> + .clock = { "csiphy5", "csiphy5_timer" },
> + .clock_rate = { { 400000000 },
> + { 300000000 } },
> + .reg = { "csiphy5" },
> + .interrupt = { "csiphy5" }
> + }
> +};
> +
> +static const struct resources csid_res_8250[] = {
> + /* CSID0 */
> + {
> + .regulator = { NULL },
> + .clock = { "vfe0_csid", "vfe0_cphy_rx", "vfe0", "vfe0_areg", "vfe0_ahb" },
> + .clock_rate = { { 400000000 },
> + { 400000000 },
> + { 350000000, 475000000, 576000000, 720000000 },
> + { 100000000, 200000000, 300000000, 400000000 },
> + { 0 } },
> + .reg = { "csid0" },
> + .interrupt = { "csid0" }
> + },
> + /* CSID1 */
> + {
> + .regulator = { NULL },
> + .clock = { "vfe1_csid", "vfe1_cphy_rx", "vfe1", "vfe1_areg", "vfe1_ahb" },
> + .clock_rate = { { 400000000 },
> + { 400000000 },
> + { 350000000, 475000000, 576000000, 720000000 },
> + { 100000000, 200000000, 300000000, 400000000 },
> + { 0 } },
> + .reg = { "csid1" },
> + .interrupt = { "csid1" }
> + },
> + /* CSID2 */
> + {
> + .regulator = { NULL },
> + .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite", "vfe_lite_ahb" },
> + .clock_rate = { { 400000000 },
> + { 400000000 },
> + { 400000000, 480000000 },
> + { 0 } },
> + .reg = { "csid2" },
> + .interrupt = { "csid2" }
> + },
> + /* CSID3 */
> + {
> + .regulator = { NULL },
> + .clock = { "vfe_lite_csid", "vfe_lite_cphy_rx", "vfe_lite", "vfe_lite_ahb" },
> + .clock_rate = { { 400000000 },
> + { 400000000 },
> + { 400000000, 480000000 },
> + { 0 } },
> + .reg = { "csid3" },
> + .interrupt = { "csid3" }
> + }
> +};
> +
> +static const struct resources vfe_res_8250[] = {
> + /* VFE0 */
> + {
> + .regulator = { NULL },
> + .clock = { "camnoc_axi", "vfe0_ahb", "vfe0_areg", "vfe0", "vfe0_axi", "cam_hf_axi" },
> + .clock_rate = { { 400000000, 480000000 },
> + { 0 },
> + { 100000000, 200000000, 300000000, 400000000 },
> + { 350000000, 475000000, 576000000, 720000000 },
> + { 0 },
> + { 0 } },
> + .reg = { "vfe0" },
> + .interrupt = { "vfe0" }
> + },
> + /* VFE1 */
> + {
> + .regulator = { NULL },
> + .clock = { "camnoc_axi", "vfe1_ahb", "vfe1_areg", "vfe1", "vfe1_axi", "cam_hf_axi" },
> + .clock_rate = { { 400000000, 480000000 },
> + { 0 },
> + { 100000000, 200000000, 300000000, 400000000 },
> + { 350000000, 475000000, 576000000, 720000000 },
> + { 0 },
> + { 0 } },
> + .reg = { "vfe1" },
> + .interrupt = { "vfe1" }
> + },
> + /* VFE2 (lite) */
> + {
> + .regulator = { NULL },
> + .clock = { "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi", "vfe_lite", "cam_hf_axi" },
> + .clock_rate = { { 400000000, 480000000 },
> + { 0 },
> + { 0 },
> + { 400000000, 480000000 },
> + { 0 } },
> + .reg = { "vfe_lite0" },
> + .interrupt = { "vfe_lite0" }
> + },
> + /* VFE3 (lite) */
> + {
> + .regulator = { NULL },
> + .clock = { "camnoc_axi", "vfe_lite_ahb", "vfe_lite_axi", "vfe_lite", "cam_hf_axi" },
> + .clock_rate = { { 400000000, 480000000 },
> + { 0 },
> + { 0 },
> + { 400000000, 480000000 },
> + { 0 } },
> + .reg = { "vfe_lite1" },
> + .interrupt = { "vfe_lite1" }
> + },
> +};
> +
> /*
> * camss_add_clock_margin - Add margin to clock frequency rate
> * @rate: Clock frequency rate
> @@ -945,6 +1104,12 @@ static int camss_init_subdevices(struct camss *camss)
> /* Titan VFEs don't have an ISPIF */
> ispif_res = NULL;
> vfe_res = vfe_res_845;
> + } else if (camss->version == CAMSS_8250) {
> + csiphy_res = csiphy_res_8250;
> + csid_res = csid_res_8250;
> + /* Titan VFEs don't have an ISPIF */
> + ispif_res = NULL;
> + vfe_res = vfe_res_8250;
> } else {
> return -EINVAL;
> }
> @@ -960,6 +1125,17 @@ static int camss_init_subdevices(struct camss *camss)
> }
> }
>
> + /* note: SM8250 requires VFE to be initialized before CSID */
> + for (i = 0; i < camss->vfe_num; i++) {
> + ret = msm_vfe_subdev_init(camss, &camss->vfe[i],
> + &vfe_res[i], i);
> + if (ret < 0) {
> + dev_err(camss->dev,
> + "Fail to init vfe%d sub-device: %d\n", i, ret);
> + return ret;
> + }
> + }
> +
> for (i = 0; i < camss->csid_num; i++) {
> ret = msm_csid_subdev_init(camss, &camss->csid[i],
> &csid_res[i], i);
> @@ -978,16 +1154,6 @@ static int camss_init_subdevices(struct camss *camss)
> return ret;
> }
>
> - for (i = 0; i < camss->vfe_num; i++) {
> - ret = msm_vfe_subdev_init(camss, &camss->vfe[i],
> - &vfe_res[i], i);
> - if (ret < 0) {
> - dev_err(camss->dev,
> - "Fail to init vfe%d sub-device: %d\n", i, ret);
> - return ret;
> - }
> - }
> -
> return 0;
> }
>
> @@ -1250,7 +1416,8 @@ static int camss_configure_pd(struct camss *camss)
> if (camss->version == CAMSS_8x96 ||
> camss->version == CAMSS_660)
> nbr_pm_domains = PM_DOMAIN_GEN1_COUNT;
> - else if (camss->version == CAMSS_845)
> + else if (camss->version == CAMSS_845 ||
> + camss->version == CAMSS_8250)
> nbr_pm_domains = PM_DOMAIN_GEN2_COUNT;
>
> for (i = 0; i < nbr_pm_domains; i++) {
> @@ -1326,6 +1493,12 @@ static int camss_probe(struct platform_device *pdev)
> camss->csiphy_num = 4;
> camss->csid_num = 3;
> camss->vfe_num = 3;
> + } else if (of_device_is_compatible(dev->of_node,
> + "qcom,sm8250-camss")) {
> + camss->version = CAMSS_8250;
> + camss->csiphy_num = 6;
> + camss->csid_num = 4;
> + camss->vfe_num = 4;
> } else {
> ret = -EINVAL;
> goto err_free;
> @@ -1457,7 +1630,8 @@ void camss_delete(struct camss *camss)
> if (camss->version == CAMSS_8x96 ||
> camss->version == CAMSS_660)
> nbr_pm_domains = PM_DOMAIN_GEN1_COUNT;
> - else if (camss->version == CAMSS_845)
> + else if (camss->version == CAMSS_845 ||
> + camss->version == CAMSS_8250)
> nbr_pm_domains = PM_DOMAIN_GEN2_COUNT;
>
> for (i = 0; i < nbr_pm_domains; i++) {
> @@ -1493,6 +1667,7 @@ static const struct of_device_id camss_dt_match[] = {
> { .compatible = "qcom,msm8996-camss" },
> { .compatible = "qcom,sdm660-camss" },
> { .compatible = "qcom,sdm845-camss" },
> + { .compatible = "qcom,sm8250-camss" },
> { }
> };
>

This patch does not seem to apply on upstream-media/master.

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