ENGR00124814-1 fb: Add i.MX EPDC fb driver

Added basic EPDC driver, including support for PXP conversions (rotation,
auto-waveform selection, CSC).  Self-clock gating also supported.

Signed-off-by: Danny Nold <dannynold@freescale.com>

1 files changed, 57 insertions, 7 deletions

diff --git a/include/linux/mxcfb.h b/include/linux/mxcfb.h
index dc419e7a8eff..27f786e5f018 100644
--- a/include/linux/mxcfb.h
+++ b/include/linux/mxcfb.h
@@ -58,6 +58,56 @@ struct mxcfb_gamma {
 	int slopek[16];
 };
 
+struct mxcfb_rect {
+	__u32 top;
+	__u32 left;
+	__u32 width;
+	__u32 height;
+};
+
+#define GRAYSCALE_8BIT				0x1
+#define GRAYSCALE_8BIT_INVERTED		0x2
+
+#define AUTO_UPDATE_MODE_REGION_MODE		0
+#define AUTO_UPDATE_MODE_AUTOMATIC_MODE	1
+
+#define UPDATE_MODE_PARTIAL			0x0
+#define UPDATE_MODE_FULL			0x1
+
+#define WAVEFORM_MODE_AUTO			257
+
+#define TEMP_USE_AMBIENT			0x1000
+
+struct mxcfb_alt_buffer_data {
+	__u32 phys_addr;
+	__u32 width;	/* width of entire buffer */
+	__u32 height;	/* height of entire buffer */
+	struct mxcfb_rect alt_update_region;	/* region within buffer to update */
+};
+
+struct mxcfb_update_data {
+	struct mxcfb_rect update_region;
+	__u32 waveform_mode;
+	__u32 update_mode;
+	__u32 update_marker;
+	int temp;
+	int use_alt_buffer;
+	struct mxcfb_alt_buffer_data alt_buffer_data;
+};
+
+/*
+ * Structure used to define waveform modes for driver
+ * Needed for driver to perform auto-waveform selection
+ */
+struct mxcfb_waveform_modes {
+	int mode_init;
+	int mode_du;
+	int mode_gc4;
+	int mode_gc8;
+	int mode_gc16;
+	int mode_gc32;
+};
+
 #define MXCFB_WAIT_FOR_VSYNC	_IOW('F', 0x20, u_int32_t)
 #define MXCFB_SET_GBL_ALPHA     _IOW('F', 0x21, struct mxcfb_gbl_alpha)
 #define MXCFB_SET_CLR_KEY       _IOW('F', 0x22, struct mxcfb_color_key)
@@ -69,6 +119,13 @@ struct mxcfb_gamma {
 #define MXCFB_GET_FB_IPU_DI 	_IOR('F', 0x29, u_int32_t)
 #define MXCFB_GET_DIFMT	       _IOR('F', 0x2A, u_int32_t)
 
+/* IOCTLs for E-ink panel updates */
+#define MXCFB_SET_WAVEFORM_MODES	_IOW('F', 0x2B, struct mxcfb_waveform_modes)
+#define MXCFB_SET_TEMPERATURE		_IOW('F', 0x2C, int32_t)
+#define MXCFB_SET_AUTO_UPDATE_MODE	_IOW('F', 0x2D, __u32)
+#define MXCFB_SEND_UPDATE			_IOW('F', 0x2E, struct mxcfb_update_data)
+#define MXCFB_WAIT_FOR_UPDATE_COMPLETE	_IOW('F', 0x2F, __u32)
+
 #ifdef __KERNEL__
 
 extern struct fb_videomode mxcfb_modedb[];
@@ -80,13 +137,6 @@ enum {
 	MXCFB_REFRESH_PARTIAL,
 };
 
-struct mxcfb_rect {
-	u32 top;
-	u32 left;
-	u32 width;
-	u32 height;
-};
-
 int mxcfb_set_refresh_mode(struct fb_info *fbi, int mode,
 			   struct mxcfb_rect *update_region);