soc: qcom: ubwc: provide no-UBWC configuration

After the commit 45a2974157d2 ("drm/msm: Use the central UBWC config
database") the MDSS driver errors out if UBWC database didn't provide it
with the UBWC configuration. Make UBWC database return zero data for
MSM8916 / APQ8016, MSM8974 / APQ8074, MSM8226 and MSM8939.

Fixes: 1924272b9ce1 ("soc: qcom: Add UBWC config provider")
Acked-by: Bjorn Andersson <andersson@kernel.org>
Reviewed-by: Rob Clark <robin.clark@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@oss.qualcomm.com>
Patchwork: https://patchwork.freedesktop.org/patch/665313/
Link: https://lore.kernel.org/r/20250723-ubwc-no-ubwc-v3-1-81bdb75685bf@oss.qualcomm.com

diff --git a/drivers/soc/qcom/ubwc_config.c b/drivers/soc/qcom/ubwc_config.c
index bd0a98aad9f3b222abcf0a7af85a318caffa9841..9002fc9373ce349c129889ab58f87cd59591de63 100644 (file)
--- a/drivers/soc/qcom/ubwc_config.c
+++ b/drivers/soc/qcom/ubwc_config.c
@@ -12,6 +12,10 @@
 
 #include <linux/soc/qcom/ubwc.h>
 
+static const struct qcom_ubwc_cfg_data no_ubwc_data = {
+       /* no UBWC, no HBB */
+};
+
 static const struct qcom_ubwc_cfg_data msm8937_data = {
        .ubwc_enc_version = UBWC_1_0,
        .ubwc_dec_version = UBWC_1_0,
@@ -215,11 +219,18 @@ static const struct qcom_ubwc_cfg_data x1e80100_data = {
 };
 
 static const struct of_device_id qcom_ubwc_configs[] __maybe_unused = {
+       { .compatible = "qcom,apq8016", .data = &no_ubwc_data },
+       { .compatible = "qcom,apq8026", .data = &no_ubwc_data },
+       { .compatible = "qcom,apq8074", .data = &no_ubwc_data },
        { .compatible = "qcom,apq8096", .data = &msm8998_data },
+       { .compatible = "qcom,msm8226", .data = &no_ubwc_data },
+       { .compatible = "qcom,msm8916", .data = &no_ubwc_data },
        { .compatible = "qcom,msm8917", .data = &msm8937_data },
        { .compatible = "qcom,msm8937", .data = &msm8937_data },
+       { .compatible = "qcom,msm8939", .data = &no_ubwc_data },
        { .compatible = "qcom,msm8953", .data = &msm8937_data },
        { .compatible = "qcom,msm8956", .data = &msm8937_data },
+       { .compatible = "qcom,msm8974", .data = &no_ubwc_data },
        { .compatible = "qcom,msm8976", .data = &msm8937_data },
        { .compatible = "qcom,msm8996", .data = &msm8998_data },
        { .compatible = "qcom,msm8998", .data = &msm8998_data },