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ARM: imx: mmdc perf function support i.MX6QP 

i.MX6QP added new register bit PROFILE_SEL in MADPCR0.
need set it at perf start.

Signed-off-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Frank Li 2016-11-07 11:30:48 -06:00 committed by Shawn Guo
parent e76bdfd740
commit c47c6fe41c
1 changed files with 32 additions and 6 deletions
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38
arch/arm/mach-imx/mmdc.c
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@ -44,6 +44,7 @@
#define DBG_RST 0x2
#define PRF_FRZ 0x4
#define CYC_OVF 0x8
#define PROFILE_SEL 0x10
#define MMDC_MADPCR0 0x410
#define MMDC_MADPSR0 0x418
@ -55,10 +56,29 @@
#define MMDC_NUM_COUNTERS 6
#define MMDC_FLAG_PROFILE_SEL 0x1
#define to_mmdc_pmu(p) container_of(p, struct mmdc_pmu, pmu)
static int ddr_type;
struct fsl_mmdc_devtype_data {
unsigned int flags;
};
static const struct fsl_mmdc_devtype_data imx6q_data = {
};
static const struct fsl_mmdc_devtype_data imx6qp_data = {
.flags = MMDC_FLAG_PROFILE_SEL,
};
static const struct of_device_id imx_mmdc_dt_ids[] = {
{ .compatible = "fsl,imx6q-mmdc", .data = (void *)&imx6q_data},
{ .compatible = "fsl,imx6qp-mmdc", .data = (void *)&imx6qp_data},
{ /* sentinel */ }
};
#ifdef CONFIG_PERF_EVENTS
static DEFINE_IDA(mmdc_ida);
@ -83,6 +103,7 @@ struct mmdc_pmu {
struct device *dev;
struct perf_event *mmdc_events[MMDC_NUM_COUNTERS];
struct hlist_node node;
struct fsl_mmdc_devtype_data *devtype_data;
};
/*
@ -307,6 +328,7 @@ static void mmdc_pmu_event_start(struct perf_event *event, int flags)
struct mmdc_pmu *pmu_mmdc = to_mmdc_pmu(event->pmu);
struct hw_perf_event *hwc = &event->hw;
void __iomem *mmdc_base, *reg;
u32 val;
mmdc_base = pmu_mmdc->mmdc_base;
reg = mmdc_base + MMDC_MADPCR0;
@ -321,7 +343,12 @@ static void mmdc_pmu_event_start(struct perf_event *event, int flags)
local64_set(&hwc->prev_count, 0);
writel(DBG_RST, reg);
writel(DBG_EN, reg);
val = DBG_EN;
if (pmu_mmdc->devtype_data->flags & MMDC_FLAG_PROFILE_SEL)
val |= PROFILE_SEL;
writel(val, reg);
}
static int mmdc_pmu_event_add(struct perf_event *event, int flags)
@ -436,6 +463,8 @@ static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_b
char *name;
int mmdc_num;
int ret;
const struct of_device_id *of_id =
of_match_device(imx_mmdc_dt_ids, &pdev->dev);
pmu_mmdc = kzalloc(sizeof(*pmu_mmdc), GFP_KERNEL);
if (!pmu_mmdc) {
@ -450,6 +479,8 @@ static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_b
name = devm_kasprintf(&pdev->dev,
GFP_KERNEL, "mmdc%d", mmdc_num);
pmu_mmdc->devtype_data = (struct fsl_mmdc_devtype_data *)of_id->data;
hrtimer_init(&pmu_mmdc->hrtimer, CLOCK_MONOTONIC,
HRTIMER_MODE_REL);
pmu_mmdc->hrtimer.function = mmdc_pmu_timer_handler;
@ -524,11 +555,6 @@ int imx_mmdc_get_ddr_type(void)
return ddr_type;
}
static const struct of_device_id imx_mmdc_dt_ids[] = {
{ .compatible = "fsl,imx6q-mmdc", },
{ /* sentinel */ }
};
static struct platform_driver imx_mmdc_driver = {
.driver = {
.name = "imx-mmdc",