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Date: Thu, 4 Apr 2013 10:31:17 +0100
From: Lee Jones <lee.jones@...aro.org>
To: linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc: arnd@...db.de, linus.walleij@...ricsson.com,
Lee Jones <lee.jones@...aro.org>,
Samuel Ortiz <sameo@...ux.intel.com>
Subject: [PATCH 2/2] mfd: db8500-prcmu: Support platform dependant device selection
The main aim for this cycle is to have the u8540 booting to a
console. However, the u8540 doesn't support all of the u8500
platform devices yet. After this stage is complete we can then
fill in the inadequacies, such as specific clock support at a
later date. To achieve this we're placing devices supported by
all platforms into a common device structure and the remaining
ones into a platform specific one.
Cc: Samuel Ortiz <sameo@...ux.intel.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
---
drivers/mfd/db8500-prcmu.c | 46 +++++++++++++++++++++++++++++---------------
1 file changed, 30 insertions(+), 16 deletions(-)
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 1c4edbf8..37ece93 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -24,6 +24,7 @@
#include <linux/jiffies.h>
#include <linux/bitops.h>
#include <linux/fs.h>
+#include <linux/of.h>
#include <linux/platform_device.h>
#include <linux/uaccess.h>
#include <linux/irqchip/arm-gic.h>
@@ -3107,19 +3108,7 @@ static struct ux500_wdt_data db8500_wdt_pdata = {
.has_28_bits_resolution = true,
};
-static struct mfd_cell db8500_prcmu_devs[] = {
- {
- .name = "db8500-prcmu-regulators",
- .of_compatible = "stericsson,db8500-prcmu-regulator",
- .platform_data = &db8500_regulators,
- .pdata_size = sizeof(db8500_regulators),
- },
- {
- .name = "cpufreq-ux500",
- .of_compatible = "stericsson,cpufreq-ux500",
- .platform_data = &db8500_cpufreq_table,
- .pdata_size = sizeof(db8500_cpufreq_table),
- },
+static struct mfd_cell common_prcmu_devs[] = {
{
.name = "ux500_wdt",
.platform_data = &db8500_wdt_pdata,
@@ -3135,6 +3124,21 @@ static struct mfd_cell db8500_prcmu_devs[] = {
},
};
+static struct mfd_cell db8500_prcmu_devs[] = {
+ {
+ .name = "db8500-prcmu-regulators",
+ .of_compatible = "stericsson,db8500-prcmu-regulator",
+ .platform_data = &db8500_regulators,
+ .pdata_size = sizeof(db8500_regulators),
+ },
+ {
+ .name = "cpufreq-ux500",
+ .of_compatible = "stericsson,cpufreq-ux500",
+ .platform_data = &db8500_cpufreq_table,
+ .pdata_size = sizeof(db8500_cpufreq_table),
+ },
+};
+
static void db8500_prcmu_update_cpufreq(void)
{
if (prcmu_has_arm_maxopp()) {
@@ -3184,7 +3188,7 @@ static int db8500_prcmu_probe(struct platform_device *pdev)
db8500_irq_init(np);
- for (i = 0; i < ARRAY_SIZE(db8500_prcmu_devs); i++) {
+ for (i = 0; i < ARRAY_SIZE(common_prcmu_devs); i++) {
if (!strcmp(db8500_prcmu_devs[i].name, "ab8500-core")) {
db8500_prcmu_devs[i].platform_data = pdata->ab_platdata;
db8500_prcmu_devs[i].pdata_size = sizeof(struct ab8500_platform_data);
@@ -3195,13 +3199,23 @@ static int db8500_prcmu_probe(struct platform_device *pdev)
db8500_prcmu_update_cpufreq();
- err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
- ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL);
+ err = mfd_add_devices(&pdev->dev, 0, common_prcmu_devs,
+ ARRAY_SIZE(common_prcmu_devs), NULL, 0, NULL);
if (err) {
pr_err("prcmu: Failed to add subdevices\n");
return err;
}
+ /* TODO: Remove restriction when clk definitions are available. */
+ if (!of_machine_is_compatible("st-ericsson,u8540")) {
+ err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
+ ARRAY_SIZE(db8500_prcmu_devs), NULL, 0, NULL);
+ if (err) {
+ pr_err("prcmu: Failed to add subdevices\n");
+ return err;
+ }
+ }
+
pr_info("DB8500 PRCMU initialized\n");
no_irq_return:
--
1.7.10.4
--
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