diff options
| author | Frank Li <Frank.Li@nxp.com> | 2016-11-07 18:30:48 +0100 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-11-14 06:34:45 +0100 |
| commit | c47c6fe41c152a1b6dd5c195bdea06c24cf2ac30 (patch) | |
| tree | 74cb6c3b0a2fcf7ba7deab764c4910fd312dc4b1 /arch/arm/mach-imx | |
| parent | ARM: imx: Added perf functionality to mmdc driver (diff) | |
| download | linux-c47c6fe41c152a1b6dd5c195bdea06c24cf2ac30.tar.xz linux-c47c6fe41c152a1b6dd5c195bdea06c24cf2ac30.zip | |
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>
Diffstat (limited to 'arch/arm/mach-imx')
| -rw-r--r-- | arch/arm/mach-imx/mmdc.c | 38 |
1 files changed, 32 insertions, 6 deletions
diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c index d82d14ceb2e9..ba96bf979625 100644 --- a/arch/arm/mach-imx/mmdc.c +++ b/arch/arm/mach-imx/mmdc.c @@ -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", |