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Message-ID: <f1bd21b9-6f77-4112-bc3d-9c94f170857e@linaro.org>
Date: Thu, 10 Apr 2025 11:18:55 +0200
From: neil.armstrong@...aro.org
To: Vikash Garodia <quic_vgarodia@...cinc.com>,
Dikshita Agarwal <quic_dikshita@...cinc.com>,
Abhinav Kumar <quic_abhinavk@...cinc.com>,
Mauro Carvalho Chehab <mchehab@...nel.org>, Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley
<conor+dt@...nel.org>, Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-media@...r.kernel.org, linux-arm-msm@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
Bryan O'Donoghue <bryan.odonoghue@...aro.org>
Subject: Re: [PATCH v4 6/6] media: platform: qcom/iris: add sm8650 support
On 10/04/2025 11:13, Vikash Garodia wrote:
>
> On 4/10/2025 2:31 PM, Neil Armstrong wrote:
>> On 09/04/2025 18:57, Vikash Garodia wrote:
>>> Hi Neil,
>>>
>>> On 4/9/2025 8:08 PM, Neil Armstrong wrote:
>>>> Add support for the SM8650 platform by re-using the SM8550
>>>> definitions and using the vpu33 ops.
>>>>
>>>> The SM8650/vpu33 requires more reset lines, but the H.264
>>>> decoder capabilities are identical.
>>>>
>>>> Tested-by: Bryan O'Donoghue <bryan.odonoghue@...aro.org> # x1e Dell
>>>> Signed-off-by: Neil Armstrong <neil.armstrong@...aro.org>
>>>> ---
>>>> .../platform/qcom/iris/iris_platform_common.h | 1 +
>>>> .../platform/qcom/iris/iris_platform_sm8550.c | 64 ++++++++++++++++++++++
>>>> drivers/media/platform/qcom/iris/iris_probe.c | 4 ++
>>>> 3 files changed, 69 insertions(+)
>>>>
>>>> diff --git a/drivers/media/platform/qcom/iris/iris_platform_common.h
>>>> b/drivers/media/platform/qcom/iris/iris_platform_common.h
>>>> index
>>>> fdd40fd80178c4c66b37e392d07a0a62f492f108..6bc3a7975b04d612f6c89206eae95dac678695fc 100644
>>>> --- a/drivers/media/platform/qcom/iris/iris_platform_common.h
>>>> +++ b/drivers/media/platform/qcom/iris/iris_platform_common.h
>>>> @@ -35,6 +35,7 @@ enum pipe_type {
>>>> extern struct iris_platform_data sm8250_data;
>>>> extern struct iris_platform_data sm8550_data;
>>>> +extern struct iris_platform_data sm8650_data;
>>>> enum platform_clk_type {
>>>> IRIS_AXI_CLK,
>>>> diff --git a/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
>>>> b/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
>>>> index
>>>> 35d278996c430f2856d0fe59586930061a271c3e..d0f8fa960d53367023e41bc5807ba3f8beae2efc 100644
>>>> --- a/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
>>>> +++ b/drivers/media/platform/qcom/iris/iris_platform_sm8550.c
>>>> @@ -144,6 +144,10 @@ static const struct icc_info sm8550_icc_table[] = {
>>>> static const char * const sm8550_clk_reset_table[] = { "bus" };
>>>> +static const char * const sm8650_clk_reset_table[] = { "bus", "core" };
>>>> +
>>>> +static const char * const sm8650_controller_reset_table[] = { "xo" };
>>>> +
>>>> static const struct bw_info sm8550_bw_table_dec[] = {
>>>> { ((4096 * 2160) / 256) * 60, 1608000 },
>>>> { ((4096 * 2160) / 256) * 30, 826000 },
>>>> @@ -264,3 +268,63 @@ struct iris_platform_data sm8550_data = {
>>>> .dec_op_int_buf_tbl = sm8550_dec_op_int_buf_tbl,
>>>> .dec_op_int_buf_tbl_size = ARRAY_SIZE(sm8550_dec_op_int_buf_tbl),
>>>> };
>>>> +
>>>> +/*
>>>> + * Shares most of SM8550 data except:
>>>> + * - vpu_ops to iris_vpu33_ops
>>>> + * - clk_rst_tbl to sm8650_clk_reset_table
>>>> + * - controller_rst_tbl to sm8650_controller_reset_table
>>>> + * - fwname to "qcom/vpu/vpu33_p4.mbn"
>>>> + */
>>>> +struct iris_platform_data sm8650_data = {
>>>> + .get_instance = iris_hfi_gen2_get_instance,
>>>> + .init_hfi_command_ops = iris_hfi_gen2_command_ops_init,
>>>> + .init_hfi_response_ops = iris_hfi_gen2_response_ops_init,
>>>> + .vpu_ops = &iris_vpu33_ops,
>>>> + .set_preset_registers = iris_set_sm8550_preset_registers,
>>>> + .icc_tbl = sm8550_icc_table,
>>>> + .icc_tbl_size = ARRAY_SIZE(sm8550_icc_table),
>>>> + .clk_rst_tbl = sm8650_clk_reset_table,
>>>> + .clk_rst_tbl_size = ARRAY_SIZE(sm8650_clk_reset_table),
>>>> + .controller_rst_tbl = sm8650_controller_reset_table,
>>>> + .controller_rst_tbl_size = ARRAY_SIZE(sm8650_controller_reset_table),
>>>> + .bw_tbl_dec = sm8550_bw_table_dec,
>>>> + .bw_tbl_dec_size = ARRAY_SIZE(sm8550_bw_table_dec),
>>>> + .pmdomain_tbl = sm8550_pmdomain_table,
>>>> + .pmdomain_tbl_size = ARRAY_SIZE(sm8550_pmdomain_table),
>>>> + .opp_pd_tbl = sm8550_opp_pd_table,
>>>> + .opp_pd_tbl_size = ARRAY_SIZE(sm8550_opp_pd_table),
>>>> + .clk_tbl = sm8550_clk_table,
>>>> + .clk_tbl_size = ARRAY_SIZE(sm8550_clk_table),
>>>> + /* Upper bound of DMA address range */
>>>> + .dma_mask = 0xe0000000 - 1,
>>>> + .fwname = "qcom/vpu/vpu33_p4.mbn",
>>>> + .pas_id = IRIS_PAS_ID,
>>>> + .inst_caps = &platform_inst_cap_sm8550,
>>>> + .inst_fw_caps = inst_fw_cap_sm8550,
>>>> + .inst_fw_caps_size = ARRAY_SIZE(inst_fw_cap_sm8550),
>>>> + .tz_cp_config_data = &tz_cp_config_sm8550,
>>>> + .core_arch = VIDEO_ARCH_LX,
>>>> + .hw_response_timeout = HW_RESPONSE_TIMEOUT_VALUE,
>>>> + .ubwc_config = &ubwc_config_sm8550,
>>>> + .num_vpp_pipe = 4,
>>>> + .max_session_count = 16,
>>>> + .max_core_mbpf = ((8192 * 4352) / 256) * 2,
>>>> + .input_config_params =
>>>> + sm8550_vdec_input_config_params,
>>>> + .input_config_params_size =
>>>> + ARRAY_SIZE(sm8550_vdec_input_config_params),
>>>> + .output_config_params =
>>>> + sm8550_vdec_output_config_params,
>>>> + .output_config_params_size =
>>>> + ARRAY_SIZE(sm8550_vdec_output_config_params),
>>>> + .dec_input_prop = sm8550_vdec_subscribe_input_properties,
>>>> + .dec_input_prop_size = ARRAY_SIZE(sm8550_vdec_subscribe_input_properties),
>>>> + .dec_output_prop = sm8550_vdec_subscribe_output_properties,
>>>> + .dec_output_prop_size =
>>>> ARRAY_SIZE(sm8550_vdec_subscribe_output_properties),
>>>> +
>>>> + .dec_ip_int_buf_tbl = sm8550_dec_ip_int_buf_tbl,
>>>> + .dec_ip_int_buf_tbl_size = ARRAY_SIZE(sm8550_dec_ip_int_buf_tbl),
>>>> + .dec_op_int_buf_tbl = sm8550_dec_op_int_buf_tbl,
>>>> + .dec_op_int_buf_tbl_size = ARRAY_SIZE(sm8550_dec_op_int_buf_tbl),
>>>> +};
>>> While i was extending the data for QCS8300 (one another iris-v3 variant), i
>>> realize that this file iris_platform_sm8550.c is getting dumped with all SOC
>>> platform data. It would be a good idea at this point to split it into something
>>> like this
>>> 1. Introduce SOC specific c file and move the respective SOC platform data to
>>> it, for ex, in this case sm8650_data
>>> 2. Move the common structs from iris_platform_sm8550.c to
>>> iris_platform_common.h. This way more SOCs getting added in future, can include
>>> the common header to reuse them, otherwise it would end up using 8550.c for all
>>> future SOC.
>>>
>>> Share your comments if you have any better approach to manage/re-use these
>>> platform data considering more SOCs getting added.
>>
>> Right, yes the architecture is fine, but I don't feel iris_platform_common is
>> the right
>> place, perhaps we could introduce a platform_catalog.c where we could place all
>> the common
>> platform data and reuse them from the platform_<soc>.c files ?
> Common structs would certainly need to be part of a header which can be
> included. Where do you plan to keep common struct to be used across SOC specific
> file in your approach ?
Common struct in header would mean they would be duplicated for each platform
when compiled, which would sub-optimal.
I tried to look at the drm/msm/dpu1 catalog, but:
1) in our case 99% is common, only a few stuff differs
2) we have a single struct which requires the array sizes
This makes using the drm/msm/dpu1 catalog structure impossible.
>>
>> I can design prototype on top of this patchset as an RFC.
> I was thinking that the changes are not that big, and can be done in existing
> series though.
I disagree, this is a much larger subject than sm8650 support itself.
Neil
>
> Thanks,
> Vikash
>>
>> Neil
>>
>>>
>>> Regards,
>>> Vikash
>>>
>>>> diff --git a/drivers/media/platform/qcom/iris/iris_probe.c
>>>> b/drivers/media/platform/qcom/iris/iris_probe.c
>>>> index
>>>> 4f8bce6e2002bffee4c93dcaaf6e52bf4e40992e..7cd8650fbe9c09598670530103e3d5edf32953e7 100644
>>>> --- a/drivers/media/platform/qcom/iris/iris_probe.c
>>>> +++ b/drivers/media/platform/qcom/iris/iris_probe.c
>>>> @@ -345,6 +345,10 @@ static const struct of_device_id iris_dt_match[] = {
>>>> .data = &sm8250_data,
>>>> },
>>>> #endif
>>>> + {
>>>> + .compatible = "qcom,sm8650-iris",
>>>> + .data = &sm8650_data,
>>>> + },
>>>> { },
>>>> };
>>>> MODULE_DEVICE_TABLE(of, iris_dt_match);
>>>>
>>
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