Merge "coresight: add device attribute for etr ddr mem size" (59acb37c) · Commits · e / devices / android_kernel_sony_msm8994

drivers/coresight/coresight-tmc.c

+28 −0

Original line number	Diff line number	Diff line
		@@ -177,6 +177,7 @@ struct tmc_drvdata {
		bool byte_cntr_read_active;
		wait_queue_head_t wq;
		char *byte_cntr_node;
		uint32_t mem_size;
		};

		static void tmc_wait_for_flush(struct tmc_drvdata *drvdata)
		@@ -1320,6 +1321,32 @@ static ssize_t tmc_etr_store_byte_cntr_value(struct device *dev,
		static DEVICE_ATTR(byte_cntr_value, S_IRUGO \| S_IWUSR,
		tmc_etr_show_byte_cntr_value, tmc_etr_store_byte_cntr_value);

		static ssize_t tmc_etr_show_mem_size(struct device *dev,
		struct device_attribute *attr,
		char *buf)
		{
		struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent);
		unsigned long val = drvdata->mem_size;

		return scnprintf(buf, PAGE_SIZE, "%#lx\n", val);
		}

		static ssize_t tmc_etr_store_mem_size(struct device *dev,
		struct device_attribute *attr,
		const char *buf, size_t size)
		{
		struct tmc_drvdata *drvdata = dev_get_drvdata(dev->parent);
		unsigned long val;

		if (sscanf(buf, "%lx", &val) != 1)
		return -EINVAL;

		drvdata->mem_size = val;
		return size;
		}
		static DEVICE_ATTR(mem_size, S_IRUGO \| S_IWUSR,
		tmc_etr_show_mem_size, tmc_etr_store_mem_size);

		static struct attribute *tmc_attrs[] = {
		&dev_attr_trigger_cntr.attr,
		NULL,
		@@ -1332,6 +1359,7 @@ static struct attribute_group tmc_attr_grp = {
		static struct attribute *tmc_etr_attrs[] = {
		&dev_attr_out_mode.attr,
		&dev_attr_byte_cntr_value.attr,
		&dev_attr_mem_size.attr,
		NULL,
		};