If the touchscreen pins are used as general purpose analogue
input, the touchscreen driver should not be used. The pins
will be handled by the existing hwmon driver instead.
Acked-for-MFD-by: Lee Jones <lee.jo...@linaro.org>
Signed-off-by: Sebastian Reichel <sebastian.reic...@collabora.co.uk>
---
drivers/mfd/da9052-core.c | 26 +++++++++++++++++++++++---
1 file changed, 23 insertions(+), 3 deletions(-)
diff --git a/drivers/mfd/da9052-core.c b/drivers/mfd/da9052-core.c
index 977418ca9117..433add43a0a9 100644
--- a/drivers/mfd/da9052-core.c
+++ b/drivers/mfd/da9052-core.c
@@ -18,6 +18,7 @@
#include <linux/mfd/core.h>
#include <linux/slab.h>
#include <linux/module.h>
+#include <linux/property.h>
#include <linux/mfd/da9052/da9052.h>
#include <linux/mfd/da9052/pdata.h>
@@ -520,9 +521,6 @@ static const struct mfd_cell da9052_subdev_info[] = {
{
.name = "da9052-wled3",
},
- {
- .name = "da9052-tsi",
- },
{
.name = "da9052-bat",
},
@@ -531,6 +529,10 @@ static const struct mfd_cell da9052_subdev_info[] = {
},
};
+static const struct mfd_cell da9052_tsi_subdev_info[] = {
+ { .name = "da9052-tsi" },
+};
+
const struct regmap_config da9052_regmap_config = {
.reg_bits = 8,
.val_bits = 8,
@@ -621,9 +623,27 @@ int da9052_device_init(struct da9052 *da9052, u8 chip_id)
goto err;
}
+ /*
+ * Check if touchscreen pins are used are analogue input instead
+ * of having a touchscreen connected to them. The analogue input
+ * functionality will be provided by hwmon driver (if enabled).
+ */
+ if (!device_property_read_bool(da9052->dev, "dlg,tsi-as-adc")) {
+ ret = mfd_add_devices(da9052->dev, PLATFORM_DEVID_AUTO,
+ da9052_tsi_subdev_info,
+ ARRAY_SIZE(da9052_tsi_subdev_info),
+ NULL, 0, NULL);
+ if (ret) {
+ dev_err(da9052->dev, "failed to add TSI subdev: %d\n",
+ ret);
+ goto err;
+ }
+ }
+
return 0;
err:
+ mfd_remove_devices(da9052->dev);
da9052_irq_exit(da9052);
return ret;
--
2.14.1
