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@linux.intel.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 24 insertions, 8 deletions

diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 25dda8d7cb00..319b8abe742b 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/mfd/core.h>
@@ -3067,6 +3068,15 @@ static struct db8500_thsens_platform_data db8500_thsens_data = {
         .num_trips = 4,
 };
 
+static struct mfd_cell common_prcmu_devs[] = {
+        {
+                .name = "ux500_wdt",
+                .platform_data = &db8500_wdt_pdata,
+                .pdata_size = sizeof(db8500_wdt_pdata),
+                .id = -1,
+        },
+};
+
 static struct mfd_cell db8500_prcmu_devs[] = {
         {
                 .name = "db8500-prcmu-regulators",
@@ -3081,12 +3091,6 @@ static struct mfd_cell db8500_prcmu_devs[] = {
                 .pdata_size = sizeof(db8500_cpufreq_table),
         },
         {
-                .name = "ux500_wdt",
-                .platform_data = &db8500_wdt_pdata,
-                .pdata_size = sizeof(db8500_wdt_pdata),
-                .id = -1,
-        },
-        {
                 .name = "db8500-thermal",
                 .num_resources = ARRAY_SIZE(db8500_thsens_resources),
                 .resources = db8500_thsens_resources,
@@ -3175,13 +3179,25 @@ 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, db8500_irq_domain);
+        err = mfd_add_devices(&pdev->dev, 0, common_prcmu_devs,
+                              ARRAY_SIZE(common_prcmu_devs), NULL, 0, db8500_irq_domain);
         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,
+                                      db8500_irq_domain);
+                if (err) {
+                        mfd_remove_devices(&pdev->dev);
+                        pr_err("prcmu: Failed to add subdevices\n");
+                        goto no_irq_return;
+                }
+        }
+
         err = db8500_prcmu_register_ab8500(&pdev->dev, pdata->ab_platdata,
                                            pdata->ab_irq);
         if (err) {