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Samsung PM 3rd updates for v3.19

Browse source 
- exynos3250
   : add PMU support
 
 - PMU refactoring
   : move restart code into PMU driver
   : move restart code for exynos440 into clk driver
 
 - use u8 for val[] in struct exynos_pmu_conf
 
 Note that this branch is based on tags/samsung-exynos-v3.19
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Merge tag 'samsung-pm-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung into next/soc

Pull "Samsung PM 3rd updates for v3.19" from Kukjin Kim:

- exynos3250
  : add PMU support

- PMU refactoring
  : move restart code into PMU driver
  : move restart code for exynos440 into clk driver

- use u8 for val[] in struct exynos_pmu_conf

Note that this branch is based on tags/samsung-exynos-v3.19

* tag 'samsung-pm-3' of git://git.kernel.org/pub/scm/linux/kernel/git/kgene/linux-samsung:
  ARM: EXYNOS: use u8 for val[] in struct exynos_pmu_conf
  ARM: EXYNOS: move restart code into pmu driver
  clk: exynos5440: move restart code into clock driver
  ARM: EXYNOS: add exynos3250 PMU support

Signed-off-by: Arnd Bergmann <[email protected]>
This commit is contained in:
Arnd Bergmann 2014-11-28 13:21:28 +01:00
commit 09ffd948a0
5 changed files with 347 additions and 26 deletions
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29
drivers/clk/samsung/clk-exynos5440.c
View file

@ -15,6 +15,8 @@
#include <linux/clk-provider.h>
#include <linux/of.h>
#include <linux/of_address.h>
#include <linux/notifier.h>
#include <linux/reboot.h>
#include "clk.h"
#include "clk-pll.h"
@ -23,6 +25,8 @@
#define CPU_CLK_STATUS 0xfc
#define MISC_DOUT1 0x558
static void __iomem *reg_base;
/* parent clock name list */
PNAME(mout_armclk_p) = { "cplla", "cpllb" };
PNAME(mout_spi_p) = { "div125", "div200" };
@ -89,10 +93,30 @@ static const struct of_device_id ext_clk_match[] __initconst = {
{},
};
static int exynos5440_clk_restart_notify(struct notifier_block *this,
unsigned long code, void *unused)
{
u32 val, status;
status = readl_relaxed(reg_base + 0xbc);
val = readl_relaxed(reg_base + 0xcc);
val = (val & 0xffff0000) | (status & 0xffff);
writel_relaxed(val, reg_base + 0xcc);
return NOTIFY_DONE;
}
/*
* Exynos5440 Clock restart notifier, handles restart functionality
*/
static struct notifier_block exynos5440_clk_restart_handler = {
.notifier_call = exynos5440_clk_restart_notify,
.priority = 128,
};
/* register exynos5440 clocks */
static void __init exynos5440_clk_init(struct device_node *np)
{
void __iomem *reg_base;
struct samsung_clk_provider *ctx;
reg_base = of_iomap(np, 0);
@ -125,6 +149,9 @@ static void __init exynos5440_clk_init(struct device_node *np)
samsung_clk_of_add_provider(np, ctx);
if (register_restart_handler(&exynos5440_clk_restart_handler))
pr_warn("exynos5440 clock can't register restart handler\n");
pr_info("Exynos5440: arm_clk = %ldHz\n", _get_rate("arm_clk"));
pr_info("exynos5440 clock initialization complete\n");
}