mfd: twl4030: create some regulator devices

Initial code to create twl4030 voltage regulator devices, using
the new regulator framework.  Note that this now starts to care
what name is used to declare the TWL chip:

 - TWL4030 is the "old" chip; newer ones have a bigger variety
   of VAUX2 voltages.

 - TWL5030 is the core "new" chip; TPS65950 is its catalog version.

 - The TPS65930 and TPS65920 are cost-reduced catalog versions of
   TWL5030 parts ... fewer regulators, no battery charger, etc.

Board-specific regulator configuration should be provided, listing
which regulators are used and their constraints (e.g. 1.8V only).

Code that could ("should"?) leverage the regulator stuff includes
TWL4030 USB transceiver support and MMC glue, LCD support for the
3430SDP and Labrador boards, and S-Video output.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/include/linux/i2c/twl4030.h b/include/linux/i2c/twl4030.h
index d4846695bcd0..e06555d40d35 100644
--- a/include/linux/i2c/twl4030.h
+++ b/include/linux/i2c/twl4030.h
@@ -278,6 +278,18 @@ struct twl4030_platform_data {
         struct twl4030_keypad_data              *keypad;
         struct twl4030_usb_data                 *usb;
 
+        /* LDO regulators */
+        struct regulator_init_data              *vdac;
+        struct regulator_init_data              *vpll1;
+        struct regulator_init_data              *vpll2;
+        struct regulator_init_data              *vmmc1;
+        struct regulator_init_data              *vmmc2;
+        struct regulator_init_data              *vsim;
+        struct regulator_init_data              *vaux1;
+        struct regulator_init_data              *vaux2;
+        struct regulator_init_data              *vaux3;
+        struct regulator_init_data              *vaux4;
+
         /* REVISIT more to come ... _nothing_ should be hard-wired */
 };
 
@@ -309,4 +321,39 @@ int twl4030_set_gpio_debounce(int gpio, int enable);
         static inline int twl4030charger_usb_en(int enable) { return 0; }
 #endif
 
+/*----------------------------------------------------------------------*/
+
+/* Linux-specific regulator identifiers ... for now, we only support
+ * the LDOs, and leave the three buck converters alone.  VDD1 and VDD2
+ * need to tie into hardware based voltage scaling (cpufreq etc), while
+ * VIO is generally fixed.
+ */
+
+/* EXTERNAL dc-to-dc buck converters */
+#define TWL4030_REG_VDD1        0
+#define TWL4030_REG_VDD2        1
+#define TWL4030_REG_VIO         2
+
+/* EXTERNAL LDOs */
+#define TWL4030_REG_VDAC        3
+#define TWL4030_REG_VPLL1       4
+#define TWL4030_REG_VPLL2       5       /* not on all chips */
+#define TWL4030_REG_VMMC1       6
+#define TWL4030_REG_VMMC2       7       /* not on all chips */
+#define TWL4030_REG_VSIM        8       /* not on all chips */
+#define TWL4030_REG_VAUX1       9       /* not on all chips */
+#define TWL4030_REG_VAUX2_4030  10      /* (twl4030-specific) */
+#define TWL4030_REG_VAUX2       11      /* (twl5030 and newer) */
+#define TWL4030_REG_VAUX3       12      /* not on all chips */
+#define TWL4030_REG_VAUX4       13      /* not on all chips */
+
+/* INTERNAL LDOs */
+#define TWL4030_REG_VINTANA1    14
+#define TWL4030_REG_VINTANA2    15
+#define TWL4030_REG_VINTDIG     16
+#define TWL4030_REG_VUSB1V5     17
+#define TWL4030_REG_VUSB1V8     18
+#define TWL4030_REG_VUSB3V1     19
+#define TWL4030_REG_VUSBCP      20
+
 #endif /* End of __TWL4030_H */