diff options
| author | Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org> | 2020-11-30 12:39:23 +0300 |
|---|---|---|
| committer | Bjorn Andersson <bjorn.andersson@linaro.org> | 2020-12-28 21:15:13 +0300 |
| commit | 916c0c05521a52f13283ad3600793fc79516ff31 (patch) | |
| tree | 729ab442d28eed4756ecae97bd240a6ecf4c8f32 /drivers/soc/qcom | |
| parent | f426c3b1d66fb76ad11ef097e840c0eb32b7f9be (diff) | |
| download | linux-916c0c05521a52f13283ad3600793fc79516ff31.tar.xz | |
soc: qcom: llcc-qcom: Extract major hardware version
The major hardware version of the LLCC IP is encoded in its
LLCC_COMMON_HW_INFO register. Extract the version and cache it in the
driver data so that it can be used to implement version specific
functionality like enabling Write sub cache for given SCID.
Signed-off-by: Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
[mani: splitted the version extract as a single patch and few cleanups]
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Link: https://lore.kernel.org/r/20201130093924.45057-4-manivannan.sadhasivam@linaro.org
Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Diffstat (limited to 'drivers/soc/qcom')
| -rw-r--r-- | drivers/soc/qcom/llcc-qcom.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/soc/qcom/llcc-qcom.c b/drivers/soc/qcom/llcc-qcom.c index 16b421608e9c..a559617ea7c0 100644 --- a/drivers/soc/qcom/llcc-qcom.c +++ b/drivers/soc/qcom/llcc-qcom.c @@ -4,6 +4,7 @@ * */ +#include <linux/bitfield.h> #include <linux/bitmap.h> #include <linux/bitops.h> #include <linux/device.h> @@ -35,6 +36,9 @@ #define CACHE_LINE_SIZE_SHIFT 6 +#define LLCC_COMMON_HW_INFO 0x00030000 +#define LLCC_MAJOR_VERSION_MASK GENMASK(31, 24) + #define LLCC_COMMON_STATUS0 0x0003000c #define LLCC_LB_CNT_MASK GENMASK(31, 28) #define LLCC_LB_CNT_SHIFT 28 @@ -476,6 +480,7 @@ static int qcom_llcc_probe(struct platform_device *pdev) const struct qcom_llcc_config *cfg; const struct llcc_slice_config *llcc_cfg; u32 sz; + u32 version; drv_data = devm_kzalloc(dev, sizeof(*drv_data), GFP_KERNEL); if (!drv_data) { @@ -496,6 +501,13 @@ static int qcom_llcc_probe(struct platform_device *pdev) goto err; } + /* Extract major version of the IP */ + ret = regmap_read(drv_data->bcast_regmap, LLCC_COMMON_HW_INFO, &version); + if (ret) + goto err; + + drv_data->major_version = FIELD_GET(LLCC_MAJOR_VERSION_MASK, version); + ret = regmap_read(drv_data->regmap, LLCC_COMMON_STATUS0, &num_banks); if (ret) |