renegade-project/linux-next
2
0
Fork 0
mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-22 12:14:01 +08:00
Code

mfd: db8500: Provide cpufreq table as platform data

Browse Source 
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: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
This commit is contained in:
Ulf Hansson 2012-10-10 13:42:23 +02:00 committed by Mike Turquette
parent 50545e1d23
commit c280f45fb8
1 changed files with 22 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
drivers/mfd/db8500-prcmu.c
View File

@ -31,6 +31,7 @@
#include <linux/mfd/abx500/ab8500.h> #include <linux/mfd/abx500/ab8500.h>
#include <linux/regulator/db8500-prcmu.h> #include <linux/regulator/db8500-prcmu.h>
#include <linux/regulator/machine.h> #include <linux/regulator/machine.h>
#include <linux/cpufreq.h>
#include <asm/hardware/gic.h> #include <asm/hardware/gic.h>
#include <mach/hardware.h> #include <mach/hardware.h>
#include <mach/irqs.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[] = { static struct resource ab8500_resources[] = {
[0] = { [0] = {
.start = IRQ_DB8500_AB8500, .start = IRQ_DB8500_AB8500,
@ -3020,6 +3030,8 @@ static struct mfd_cell db8500_prcmu_devs[] = {
{ {
.name = "cpufreq-u8500", .name = "cpufreq-u8500",
.of_compatible = "stericsson,cpufreq-u8500", .of_compatible = "stericsson,cpufreq-u8500",
.platform_data = &db8500_cpufreq_table,
.pdata_size = sizeof(db8500_cpufreq_table),
}, },
{ {
.name = "ab8500-core", .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 * 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()) if (cpu_is_u8500v20_or_later())
prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET); prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET);
db8500_prcmu_update_cpufreq();
err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs, err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL); ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL);
if (err) { if (err) {