ARM: tegra: Convert PMC to a driver
This commit converts the PMC support code to a platform driver. Because
the boot process needs to call into this driver very early, also set up
a minimal environment via an early initcall.
Signed-off-by: Thierry Reding <treding@nvidia.com>
diff --git a/arch/arm/mach-tegra/pm.c b/arch/arm/mach-tegra/pm.c
index 94db3b6..b0f48a3 100644
--- a/arch/arm/mach-tegra/pm.c
+++ b/arch/arm/mach-tegra/pm.c
@@ -28,6 +28,8 @@
#include <linux/suspend.h>
#include <soc/tegra/fuse.h>
+#include <soc/tegra/pm.h>
+#include <soc/tegra/pmc.h>
#include <asm/cacheflush.h>
#include <asm/idmap.h>
@@ -38,7 +40,6 @@
#include "flowctrl.h"
#include "iomap.h"
-#include "pmc.h"
#include "pm.h"
#include "reset.h"
#include "sleep.h"
@@ -167,9 +168,29 @@
return 0;
}
+static void tegra_pm_set(enum tegra_suspend_mode mode)
+{
+ u32 value;
+
+ switch (tegra_get_chip_id()) {
+ case TEGRA20:
+ case TEGRA30:
+ break;
+ default:
+ /* Turn off CRAIL */
+ value = flowctrl_read_cpu_csr(0);
+ value &= ~FLOW_CTRL_CSR_ENABLE_EXT_MASK;
+ value |= FLOW_CTRL_CSR_ENABLE_EXT_CRAIL;
+ flowctrl_write_cpu_csr(0, value);
+ break;
+ }
+
+ tegra_pmc_enter_suspend_mode(mode);
+}
+
void tegra_idle_lp2_last(void)
{
- tegra_pmc_pm_set(TEGRA_SUSPEND_LP2);
+ tegra_pm_set(TEGRA_SUSPEND_LP2);
cpu_cluster_pm_enter();
suspend_cpu_complex();
@@ -268,8 +289,6 @@
static void tegra_suspend_enter_lp1(void)
{
- tegra_pmc_suspend();
-
/* copy the reset vector & SDRAM shutdown code into IRAM */
memcpy(iram_save_addr, IO_ADDRESS(TEGRA_IRAM_LPx_RESUME_AREA),
iram_save_size);
@@ -281,8 +300,6 @@
static void tegra_suspend_exit_lp1(void)
{
- tegra_pmc_resume();
-
/* restore IRAM */
memcpy(IO_ADDRESS(TEGRA_IRAM_LPx_RESUME_AREA), iram_save_addr,
iram_save_size);
@@ -307,7 +324,7 @@
pr_info("Entering suspend state %s\n", lp_state[mode]);
- tegra_pmc_pm_set(mode);
+ tegra_pm_set(mode);
local_fiq_disable();
@@ -355,7 +372,6 @@
return;
tegra_tear_down_cpu_init();
- tegra_pmc_suspend_init();
if (mode >= TEGRA_SUSPEND_LP1) {
if (!tegra_lp1_iram_hook() || !tegra_sleep_core_init()) {