thermal: tsens: Add the SROT address map

On platforms whose device trees specify two address spaces for TSENS, the
second one points to the SROT registers. Initialise the SROT map on those
platforms.

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/drivers/thermal/qcom/tsens-common.c b/drivers/thermal/qcom/tsens-common.c
index 0585084..0b8a793 100644 (file)
--- a/drivers/thermal/qcom/tsens-common.c
+++ b/drivers/thermal/qcom/tsens-common.c
@@ -117,16 +117,26 @@ static const struct regmap_config tsens_config = {
 
 int __init init_common(struct tsens_device *tmdev)
 {
-       void __iomem *tm_base;
+       void __iomem *tm_base, *srot_base;
        struct resource *res;
        struct platform_device *op = of_find_device_by_node(tmdev->dev->of_node);
 
        if (!op)
                return -EINVAL;
 
-       /* The driver only uses the TM register address space for now */
        if (op->num_resources > 1) {
+               /* DT with separate SROT and TM address space */
                tmdev->tm_offset = 0;
+               res = platform_get_resource(op, IORESOURCE_MEM, 1);
+               srot_base = devm_ioremap_resource(&op->dev, res);
+               if (IS_ERR(srot_base))
+                       return PTR_ERR(srot_base);
+
+               tmdev->srot_map = devm_regmap_init_mmio(tmdev->dev,
+                                                       srot_base, &tsens_config);
+               if (IS_ERR(tmdev->srot_map))
+                       return PTR_ERR(tmdev->srot_map);
+
        } else {
                /* old DTs where SROT and TM were in a contiguous 2K block */
                tmdev->tm_offset = 0x1000;

diff --git a/drivers/thermal/qcom/tsens.h b/drivers/thermal/qcom/tsens.h
index 58e98c4..b9c4bcf 100644 (file)
--- a/drivers/thermal/qcom/tsens.h
+++ b/drivers/thermal/qcom/tsens.h
@@ -70,6 +70,7 @@ struct tsens_device {
        struct device                   *dev;
        u32                             num_sensors;
        struct regmap                   *tm_map;
+       struct regmap                   *srot_map;
        u32                             tm_offset;
        struct tsens_context            ctx;
        const struct tsens_ops          *ops;