From: Ming Lei <ming....@canonical.com>
The following modules is required to be enabled before configuring
cross trigger interface for enabling pmu irq:
l3_instr, l3_main_3, debugss
so build the arm-pmu device via the three hwmods.
Cc: Ming Lei <ming....@canonical.com>
Cc: Will Deacon <will.dea...@arm.com>
Cc: Benoit Cousson <b-cous...@ti.com>
Cc: Paul Walmsley <p...@pwsan.com>
Cc: Kevin Hilman <khil...@ti.com>
Signed-off-by: Ming Lei <ming....@canonical.com>
Signed-off-by: Will Deacon <will.dea...@arm.com>
Signed-off-by: Jon Hunter <jon-hun...@ti.com>
---
arch/arm/mach-omap2/devices.c | 61 ++++++++++++++++++++++++++++++++++++++---
1 files changed, 57 insertions(+), 4 deletions(-)
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 58682d1..d75b7d3 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -423,14 +423,67 @@ static struct platform_device omap_pmu_device = {
.num_resources = 1,
};
-static void omap_init_pmu(void)
+static struct arm_pmu_platdata omap4_pmu_data;
+static struct omap_device_pm_latency omap_pmu_latency[] = {
+ [0] = {
+ .deactivate_func = omap_device_idle_hwmods,
+ .activate_func = omap_device_enable_hwmods,
+ .flags = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+ },
+};
+
+static struct platform_device* __init omap4_init_pmu(void)
{
- if (cpu_is_omap24xx())
+ int id = -1;
+ const char *hw;
+ struct platform_device *pd;
+ struct omap_hwmod* oh[3];
+ char *dev_name = "arm-pmu";
+
+ hw = "l3_main_3";
+ oh[0] = omap_hwmod_lookup(hw);
+ if (!oh[0]) {
+ pr_err("Could not look up %s hwmod\n", hw);
+ return NULL;
+ }
+ hw = "l3_instr";
+ oh[1] = omap_hwmod_lookup(hw);
+ if (!oh[1]) {
+ pr_err("Could not look up %s hwmod\n", hw);
+ return NULL;
+ }
+ hw = "debugss";
+ oh[2] = omap_hwmod_lookup(hw);
+ if (!oh[2]) {
+ pr_err("Could not look up %s hwmod\n", hw);
+ return NULL;
+ }
+
+ pd = omap_device_build_ss(dev_name, id, oh, 3, &omap4_pmu_data,
+ sizeof(omap4_pmu_data),
+ omap_pmu_latency,
+ ARRAY_SIZE(omap_pmu_latency), 0);
+ WARN(IS_ERR(pd), "Can't build omap_device for %s.\n",
+ dev_name);
+ return pd;
+}
+static void __init omap_init_pmu(void)
+{
+ if (cpu_is_omap24xx()) {
omap_pmu_device.resource = &omap2_pmu_resource;
- else if (cpu_is_omap34xx())
+ } else if (cpu_is_omap34xx()) {
omap_pmu_device.resource = &omap3_pmu_resource;
- else
+ } else if (cpu_is_omap44xx()) {
+ struct platform_device *pd;
+
+ pd = omap4_init_pmu();
+ if (!pd)
+ return;
+ omap_device_enable(pd);
+ return;
+ } else {
return;
+ }
platform_device_register(&omap_pmu_device);
}
--
1.7.5.4
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