diff options
| author | Amit Kucheria <amit.kucheria@linaro.org> | 2018-07-18 12:13:09 +0530 |
|---|---|---|
| committer | Eduardo Valentin <edubezval@gmail.com> | 2018-07-27 15:02:37 -0700 |
| commit | 5b1283984fa39933e094d237387ad8fd39527fc1 (patch) | |
| tree | 3b31d82ac01f3dc19762318878caa8aa78008263 /drivers/thermal/qcom | |
| parent | 4ce6dcfd0d38169d9067c768fcce8e0d49f60fac (diff) | |
| download | linux-0-day-5b1283984fa39933e094d237387ad8fd39527fc1.tar.gz linux-0-day-5b1283984fa39933e094d237387ad8fd39527fc1.tar.xz | |
thermal: tsens: Add support to split up register address space into two
There are two banks of registers for v2 TSENS IPs: SROT and TM. On older
SoCs these were contiguous, leading to DTs mapping them as one register
address space of size 0x2000. In newer SoCs, these two banks are not
contiguous anymore.
Add logic to init_common() to differentiate between old and new DTs and
adjust associated offsets for the TM register bank so that the old DTs will
continue to function correctly.
Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Tested-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>
Diffstat (limited to 'drivers/thermal/qcom')
| -rw-r--r-- | drivers/thermal/qcom/tsens-8996.c | 4 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens-common.c | 12 | ||||
| -rw-r--r-- | drivers/thermal/qcom/tsens.h | 1 |
3 files changed, 15 insertions, 2 deletions
diff --git a/drivers/thermal/qcom/tsens-8996.c b/drivers/thermal/qcom/tsens-8996.c index e1f77818d8fa3..3e60cecd2c454 100644 --- a/drivers/thermal/qcom/tsens-8996.c +++ b/drivers/thermal/qcom/tsens-8996.c @@ -16,7 +16,7 @@ #include <linux/regmap.h> #include "tsens.h" -#define STATUS_OFFSET 0x10a0 +#define STATUS_OFFSET 0xa0 #define LAST_TEMP_MASK 0xfff #define STATUS_VALID_BIT BIT(21) #define CODE_SIGN_BIT BIT(11) @@ -28,7 +28,7 @@ static int get_temp_8996(struct tsens_device *tmdev, int id, int *temp) unsigned int sensor_addr; int last_temp = 0, last_temp2 = 0, last_temp3 = 0, ret; - sensor_addr = STATUS_OFFSET + s->hw_id * 4; + sensor_addr = tmdev->tm_offset + STATUS_OFFSET + s->hw_id * 4; ret = regmap_read(tmdev->map, sensor_addr, &code); if (ret) return ret; diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c index b1449ad67fc0a..c22dc18c7c658 100644 --- a/drivers/thermal/qcom/tsens-common.c +++ b/drivers/thermal/qcom/tsens-common.c @@ -16,6 +16,7 @@ #include <linux/io.h> #include <linux/nvmem-consumer.h> #include <linux/of_address.h> +#include <linux/of_platform.h> #include <linux/platform_device.h> #include <linux/regmap.h> #include "tsens.h" @@ -126,11 +127,22 @@ static const struct regmap_config tsens_config = { int __init init_common(struct tsens_device *tmdev) { void __iomem *base; + struct platform_device *op = of_find_device_by_node(tmdev->dev->of_node); + if (!op) + return -EINVAL; base = of_iomap(tmdev->dev->of_node, 0); if (!base) return -EINVAL; + /* The driver only uses the TM register address space for now */ + if (op->num_resources > 1) { + tmdev->tm_offset = 0; + } else { + /* old DTs where SROT and TM were in a contiguous 2K block */ + tmdev->tm_offset = 0x1000; + } + tmdev->map = devm_regmap_init_mmio(tmdev->dev, base, &tsens_config); if (IS_ERR(tmdev->map)) { iounmap(base); diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h index dc56e1e2a19ea..d785b37b47d23 100644 --- a/drivers/thermal/qcom/tsens.h +++ b/drivers/thermal/qcom/tsens.h @@ -77,6 +77,7 @@ struct tsens_device { struct device *dev; u32 num_sensors; struct regmap *map; + u32 tm_offset; struct tsens_context ctx; const struct tsens_ops *ops; struct tsens_sensor sensor[0]; |