ASoC: Allow user-specified WM8958 multiband compressor configurations

The paramters of the WM8958 multiband compressor can be tuned by the
user for their system using a graphical configuration tool on the host.
Allow the user to specify a set of such paramters in platform data and
select between them at runtime.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>

1 files changed, 17 insertions, 0 deletions

diff --git a/include/linux/mfd/wm8994/pdata.h b/include/linux/mfd/wm8994/pdata.h
index 5c51f367c061..882b51aefbc0 100644
--- a/include/linux/mfd/wm8994/pdata.h
+++ b/include/linux/mfd/wm8994/pdata.h
@@ -30,6 +30,8 @@ struct wm8994_ldo_pdata {
 
 #define WM8994_DRC_REGS 5
 #define WM8994_EQ_REGS  19
+#define WM8958_MBC_CUTOFF_REGS 20
+#define WM8958_MBC_COEFF_REGS  48
 
 /**
  * DRC configurations are specified with a label and a set of register
@@ -59,6 +61,18 @@ struct wm8994_retune_mobile_cfg {
         u16 regs[WM8994_EQ_REGS];
 };
 
+/**
+ * Multiband compressor configurations are specified with a label and
+ * two sets of values to write.  Configurations are expected to be
+ * generated using the multiband compressor configuration panel in
+ * WISCE - see http://www.wolfsonmicro.com/wisce/
+ */
+struct wm8958_mbc_cfg {
+        const char *name;
+        u16 cutoff_regs[WM8958_MBC_CUTOFF_REGS];
+        u16 coeff_regs[WM8958_MBC_COEFF_REGS];
+};
+
 struct wm8994_pdata {
         int gpio_base;
 
@@ -78,6 +92,9 @@ struct wm8994_pdata {
         int num_retune_mobile_cfgs;
         struct wm8994_retune_mobile_cfg *retune_mobile_cfgs;
 
+        int num_mbc_cfgs;
+        struct wm8958_mbc_cfg *mbc_cfgs;
+
         /* LINEOUT can be differential or single ended */
         unsigned int lineout1_diff:1;
         unsigned int lineout2_diff:1;