ASoC: wcd9310: add headphone over current protection feature
wcd9310 CODEC supports notification of excessive current
drawn by headphone power amplifiers. When receiving notification
from CODEC through interrupt, this driver reports this event
through soc jack framework. At this point, power amplifiers will
be locked hence no audio can be heard. Locking would be removed
once user-space application deroutes playback out of headphone path.
Change-Id: If5856ead31c9a6b8d918c09f1fdc517a69d4fa26
Signed-off-by: Patrick Lai <plai@codeaurora.org>
diff --git a/include/linux/mfd/wcd9310/pdata.h b/include/linux/mfd/wcd9310/pdata.h
index 9ca6a8c..af801f0 100644
--- a/include/linux/mfd/wcd9310/pdata.h
+++ b/include/linux/mfd/wcd9310/pdata.h
@@ -27,6 +27,30 @@
#define MAX_AMIC_CHANNEL 7
+#define TABLA_OCP_300_MA 0x0
+#define TABLA_OCP_350_MA 0x2
+#define TABLA_OCP_365_MA 0x3
+#define TABLA_OCP_150_MA 0x4
+#define TABLA_OCP_190_MA 0x6
+#define TABLA_OCP_220_MA 0x7
+
+#define TABLA_DCYCLE_255 0x0
+#define TABLA_DCYCLE_511 0x1
+#define TABLA_DCYCLE_767 0x2
+#define TABLA_DCYCLE_1023 0x3
+#define TABLA_DCYCLE_1279 0x4
+#define TABLA_DCYCLE_1535 0x5
+#define TABLA_DCYCLE_1791 0x6
+#define TABLA_DCYCLE_2047 0x7
+#define TABLA_DCYCLE_2303 0x8
+#define TABLA_DCYCLE_2559 0x9
+#define TABLA_DCYCLE_2815 0xA
+#define TABLA_DCYCLE_3071 0xB
+#define TABLA_DCYCLE_3327 0xC
+#define TABLA_DCYCLE_3583 0xD
+#define TABLA_DCYCLE_3839 0xE
+#define TABLA_DCYCLE_4095 0xF
+
struct tabla_amic {
/*legacy mode, txfe_enable and txfe_buff take 7 input
* each bit represent the channel / TXFE number
@@ -62,6 +86,14 @@
u8 bias4_cfilt_sel;
};
+struct tabla_ocp_setting {
+ unsigned int use_pdata:1; /* 0 - use sys default as recommended */
+ unsigned int num_attempts:4; /* up to 15 attempts */
+ unsigned int run_time:4; /* in duty cycle */
+ unsigned int wait_time:4; /* in duty cycle */
+ unsigned int hph_ocp_limit:3; /* Headphone OCP current limit */
+};
+
struct tabla_pdata {
int irq;
int irq_base;
@@ -70,6 +102,7 @@
struct tabla_amic amic_settings;
struct slim_device slimbus_slave_device;
struct tabla_micbias_setting micbias;
+ struct tabla_ocp_setting ocp;
};
#endif