Commit c280f45f authored by Ulf Hansson's avatar Ulf Hansson Committed by Mike Turquette
Browse files

mfd: db8500: Provide cpufreq table as platform data 



The cpufreq table needs dynamically update due to what the PRCMU
firmware is supporting. The table is then provided through to the
mfd child device as platform data.

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Acked-by: default avatarJonas Aaberg <jonas.aberg@stericsson.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Acked-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
Signed-off-by: default avatarMike Turquette <mturquette@linaro.org>
parent 50545e1d

drivers/mfd/db8500-prcmu.c

+22 −0
Original line number Diff line number Diff line
@@ -31,6 +31,7 @@ 
#include <linux/mfd/abx500/ab8500.h>

#include <linux/regulator/db8500-prcmu.h>

#include <linux/regulator/machine.h>

#include <linux/cpufreq.h>

#include <asm/hardware/gic.h>

#include <mach/hardware.h>

#include <mach/irqs.h>
@@ -3002,6 +3003,15 @@ static struct regulator_init_data db8500_regulators[DB8500_NUM_REGULATORS] = { 
	},

};



/* CPU FREQ table, may be changed due to if MAX_OPP is supported. */

static struct cpufreq_frequency_table db8500_cpufreq_table[] = {

	{ .frequency = 200000, .index = ARM_EXTCLK,},

	{ .frequency = 400000, .index = ARM_50_OPP,},

	{ .frequency = 800000, .index = ARM_100_OPP,},

	{ .frequency = CPUFREQ_TABLE_END,}, /* To be used for MAX_OPP. */

	{ .frequency = CPUFREQ_TABLE_END,},

};



static struct resource ab8500_resources[] = {

	[0] = {

		.start	= IRQ_DB8500_AB8500,
@@ -3020,6 +3030,8 @@ static struct mfd_cell db8500_prcmu_devs[] = { 
	{

		.name = "cpufreq-u8500",

		.of_compatible = "stericsson,cpufreq-u8500",

		.platform_data = &db8500_cpufreq_table,

		.pdata_size = sizeof(db8500_cpufreq_table),

	},

	{

		.name = "ab8500-core",
@@ -3030,6 +3042,14 @@ static struct mfd_cell db8500_prcmu_devs[] = { 
	},

};



static void db8500_prcmu_update_cpufreq(void)

{

	if (prcmu_has_arm_maxopp()) {

		db8500_cpufreq_table[3].frequency = 1000000;

		db8500_cpufreq_table[3].index = ARM_MAX_OPP;

	}

}



/**

 * prcmu_fw_init - arch init call for the Linux PRCMU fw init logic

 *
@@ -3074,6 +3094,8 @@ static int __devinit db8500_prcmu_probe(struct platform_device *pdev) 
	if (cpu_is_u8500v20_or_later())

		prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET);



	db8500_prcmu_update_cpufreq();



	err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,

			      ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL);

	if (err) {