msm: acpuclock: Convert acpuclock drivers into platform drivers
This allows the acpuclock drivers to initialize in a manner consistent
with other platform drivers used on MSM chipsets.
For targets without specific probe order dependencies involving
acpuclock, platform_device_register() is called during init_machine()
in the target's board file. platform_driver_probe() is then called
in a 'device' initcall. This is the case for:
acpuclock-8x60, acpuclock-8960, acpuclock-9615, acpuclock-fsm9xxx
For the other targets, platform_driver_register() is called in a
postcore initcall and the driver probes as a result of calling
platform_device_register() during init_machine(). This is required
for the following drivers:
acpuclock-7627, acpuclock-7x30, acpuclock-8x50
Specifically, these three drivers are used on targets where the CPUs
may be running from disableable clock sources that are shared with
other peripheral clocks. We must make sure that acpuclock has a
chance to assert a vote for the clock source that the CPU is currently
running from before other drivers using that same source have a chance
to disable it.
Change-Id: Ieec39722ebd757ab90057fd10ccc9a8786f0c8cb
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
diff --git a/arch/arm/mach-msm/acpuclock-7x30.c b/arch/arm/mach-msm/acpuclock-7x30.c
index 29b0065..b49613e 100644
--- a/arch/arm/mach-msm/acpuclock-7x30.c
+++ b/arch/arm/mach-msm/acpuclock-7x30.c
@@ -16,6 +16,7 @@
#include <linux/version.h>
#include <linux/kernel.h>
+#include <linux/module.h>
#include <linux/init.h>
#include <linux/errno.h>
#include <linux/string.h>
@@ -25,6 +26,7 @@
#include <linux/mutex.h>
#include <linux/io.h>
#include <linux/sort.h>
+#include <linux/platform_device.h>
#include <mach/board.h>
#include <mach/msm_iomap.h>
#include <asm/mach-types.h>
@@ -315,7 +317,7 @@
* Clock driver initialization
*---------------------------------------------------------------------------*/
-static void __init acpuclk_hw_init(void)
+static void __devinit acpuclk_hw_init(void)
{
struct clkctl_acpu_speed *s;
uint32_t div, sel, src_num;
@@ -393,7 +395,7 @@
}
/* Initalize the lpj field in the acpu_freq_tbl. */
-static void __init lpj_init(void)
+static void __devinit lpj_init(void)
{
int i;
const struct clkctl_acpu_speed *base_clk = drv_state.current_speed;
@@ -431,7 +433,7 @@
* Truncate the frequency table at the current PLL2 rate and determine the
* backup PLL to use when scaling PLL2.
*/
-void __init pll2_fixup(void)
+void __devinit pll2_fixup(void)
{
struct clkctl_acpu_speed *speed = acpu_freq_tbl;
u8 pll2_l = readl_relaxed(PLL2_L_VAL_ADDR) & 0xFF;
@@ -453,7 +455,7 @@
#define RPM_BYPASS_MASK (1 << 3)
#define PMIC_MODE_MASK (1 << 4)
-static void __init populate_plls(void)
+static void __devinit populate_plls(void)
{
acpuclk_sources[PLL_1] = clk_get_sys("acpu", "pll1_clk");
BUG_ON(IS_ERR(acpuclk_sources[PLL_1]));
@@ -479,7 +481,7 @@
.switch_time_us = 50,
};
-static int __init acpuclk_7x30_init(struct acpuclk_soc_data *soc_data)
+static int __devinit acpuclk_7x30_probe(struct platform_device *pdev)
{
pr_info("%s()\n", __func__);
@@ -494,6 +496,16 @@
return 0;
}
-struct acpuclk_soc_data acpuclk_7x30_soc_data __initdata = {
- .init = acpuclk_7x30_init,
+static struct platform_driver acpuclk_7x30_driver = {
+ .probe = acpuclk_7x30_probe,
+ .driver = {
+ .name = "acpuclk-7x30",
+ .owner = THIS_MODULE,
+ },
};
+
+static int __init acpuclk_7x30_init(void)
+{
+ return platform_driver_register(&acpuclk_7x30_driver);
+}
+postcore_initcall(acpuclk_7x30_init);