mfd: Add parameter to disable ab8500 battery management

This patch makes it possible to disable battery management
via a module boot parameter. When 'ab8500-core.no_bm=1' then
ab8500_btemp, ab8500_chargalg, ab8500_charger and ab8500_fg will
not be probed. This boot parameter is used for scripted testing
of the system.

Signed-off-by: Rickard Andersson <rickard.andersson@stericsson.com>
Reviewed-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

1 files changed, 35 insertions, 20 deletions

diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index eee95606bdb..08850f0d152 100644
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -97,6 +97,9 @@
 
 #define AB8500_TURN_ON_STATUS           0x00
 
+static bool no_bm; /* No battery management */
+module_param(no_bm, bool, S_IRUGO);
+
 #define AB9540_MODEM_CTRL2_REG                  0x23
 #define AB9540_MODEM_CTRL2_SWDBBRSTN_BIT        BIT(2)
 
@@ -834,26 +837,6 @@ static struct mfd_cell __devinitdata abx500_common_devs[] = {
                 .resources = ab8500_rtc_resources,
         },
         {
-                .name = "ab8500-charger",
-                .num_resources = ARRAY_SIZE(ab8500_charger_resources),
-                .resources = ab8500_charger_resources,
-        },
-        {
-                .name = "ab8500-btemp",
-                .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
-                .resources = ab8500_btemp_resources,
-        },
-        {
-                .name = "ab8500-fg",
-                .num_resources = ARRAY_SIZE(ab8500_fg_resources),
-                .resources = ab8500_fg_resources,
-        },
-        {
-                .name = "ab8500-chargalg",
-                .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
-                .resources = ab8500_chargalg_resources,
-        },
-        {
                 .name = "ab8500-acc-det",
                 .num_resources = ARRAY_SIZE(ab8500_av_acc_detect_resources),
                 .resources = ab8500_av_acc_detect_resources,
@@ -886,6 +869,29 @@ static struct mfd_cell __devinitdata abx500_common_devs[] = {
         },
 };
 
+static struct mfd_cell __devinitdata ab8500_bm_devs[] = {
+        {
+                .name = "ab8500-charger",
+                .num_resources = ARRAY_SIZE(ab8500_charger_resources),
+                .resources = ab8500_charger_resources,
+        },
+        {
+                .name = "ab8500-btemp",
+                .num_resources = ARRAY_SIZE(ab8500_btemp_resources),
+                .resources = ab8500_btemp_resources,
+        },
+        {
+                .name = "ab8500-fg",
+                .num_resources = ARRAY_SIZE(ab8500_fg_resources),
+                .resources = ab8500_fg_resources,
+        },
+        {
+                .name = "ab8500-chargalg",
+                .num_resources = ARRAY_SIZE(ab8500_chargalg_resources),
+                .resources = ab8500_chargalg_resources,
+        },
+};
+
 static struct mfd_cell __devinitdata ab8500_devs[] = {
         {
                 .name = "ab8500-gpio",
@@ -1204,6 +1210,15 @@ int __devinit ab8500_init(struct ab8500 *ab8500, enum ab8500_version version)
         if (ret)
                 goto out_freeirq;
 
+        if (!no_bm) {
+                /* Add battery management devices */
+                ret = mfd_add_devices(ab8500->dev, 0, ab8500_bm_devs,
+                                      ARRAY_SIZE(ab8500_bm_devs), NULL,
+                                      ab8500->irq_base);
+                if (ret)
+                        dev_err(ab8500->dev, "error adding bm devices\n");
+        }
+
         if (is_ab9540(ab8500))
                 ret = sysfs_create_group(&ab8500->dev->kobj,
                                         &ab9540_attr_group);