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>
diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index eee9560..08850f0 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 @@
.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 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 @@
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);