[media] V4L: at91: add Atmel Image Sensor Interface (ISI) support

This patch is to enable Atmel Image Sensor Interface (ISI) driver support.

Signed-off-by: Josh Wu <josh.wu@atmel.com>
Acked-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 119 insertions, 0 deletions

diff --git a/include/media/atmel-isi.h b/include/media/atmel-isi.h
new file mode 100644
index 000000000000..26cece595121
--- /dev/null
+++ b/include/media/atmel-isi.h
@@ -0,0 +1,119 @@
+/*
+ * Register definitions for the Atmel Image Sensor Interface.
+ *
+ * Copyright (C) 2011 Atmel Corporation
+ * Josh Wu, <josh.wu@atmel.com>
+ *
+ * Based on previous work by Lars Haring, <lars.haring@atmel.com>
+ * and Sedji Gaouaou
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+#ifndef __ATMEL_ISI_H__
+#define __ATMEL_ISI_H__
+
+#include <linux/types.h>
+
+/* ISI_V2 register offsets */
+#define ISI_CFG1                                0x0000
+#define ISI_CFG2                                0x0004
+#define ISI_PSIZE                               0x0008
+#define ISI_PDECF                               0x000c
+#define ISI_Y2R_SET0                            0x0010
+#define ISI_Y2R_SET1                            0x0014
+#define ISI_R2Y_SET0                            0x0018
+#define ISI_R2Y_SET1                            0x001C
+#define ISI_R2Y_SET2                            0x0020
+#define ISI_CTRL                                0x0024
+#define ISI_STATUS                              0x0028
+#define ISI_INTEN                               0x002C
+#define ISI_INTDIS                              0x0030
+#define ISI_INTMASK                             0x0034
+#define ISI_DMA_CHER                            0x0038
+#define ISI_DMA_CHDR                            0x003C
+#define ISI_DMA_CHSR                            0x0040
+#define ISI_DMA_P_ADDR                          0x0044
+#define ISI_DMA_P_CTRL                          0x0048
+#define ISI_DMA_P_DSCR                          0x004C
+#define ISI_DMA_C_ADDR                          0x0050
+#define ISI_DMA_C_CTRL                          0x0054
+#define ISI_DMA_C_DSCR                          0x0058
+
+/* Bitfields in CFG1 */
+#define ISI_CFG1_HSYNC_POL_ACTIVE_LOW           (1 << 2)
+#define ISI_CFG1_VSYNC_POL_ACTIVE_LOW           (1 << 3)
+#define ISI_CFG1_PIXCLK_POL_ACTIVE_FALLING      (1 << 4)
+#define ISI_CFG1_EMB_SYNC                       (1 << 6)
+#define ISI_CFG1_CRC_SYNC                       (1 << 7)
+/* Constants for FRATE(ISI_V2) */
+#define         ISI_CFG1_FRATE_CAPTURE_ALL      (0 << 8)
+#define         ISI_CFG1_FRATE_DIV_2            (1 << 8)
+#define         ISI_CFG1_FRATE_DIV_3            (2 << 8)
+#define         ISI_CFG1_FRATE_DIV_4            (3 << 8)
+#define         ISI_CFG1_FRATE_DIV_5            (4 << 8)
+#define         ISI_CFG1_FRATE_DIV_6            (5 << 8)
+#define         ISI_CFG1_FRATE_DIV_7            (6 << 8)
+#define         ISI_CFG1_FRATE_DIV_8            (7 << 8)
+#define ISI_CFG1_DISCR                          (1 << 11)
+#define ISI_CFG1_FULL_MODE                      (1 << 12)
+
+/* Bitfields in CFG2 */
+#define ISI_CFG2_GRAYSCALE                      (1 << 13)
+/* Constants for YCC_SWAP(ISI_V2) */
+#define         ISI_CFG2_YCC_SWAP_DEFAULT       (0 << 28)
+#define         ISI_CFG2_YCC_SWAP_MODE_1        (1 << 28)
+#define         ISI_CFG2_YCC_SWAP_MODE_2        (2 << 28)
+#define         ISI_CFG2_YCC_SWAP_MODE_3        (3 << 28)
+#define ISI_CFG2_IM_VSIZE_OFFSET                0
+#define ISI_CFG2_IM_HSIZE_OFFSET                16
+#define ISI_CFG2_IM_VSIZE_MASK          (0x7FF << ISI_CFG2_IM_VSIZE_OFFSET)
+#define ISI_CFG2_IM_HSIZE_MASK          (0x7FF << ISI_CFG2_IM_HSIZE_OFFSET)
+
+/* Bitfields in CTRL */
+/* Also using in SR(ISI_V2) */
+#define ISI_CTRL_EN                             (1 << 0)
+#define ISI_CTRL_CDC                            (1 << 8)
+/* Also using in SR/IER/IDR/IMR(ISI_V2) */
+#define ISI_CTRL_DIS                            (1 << 1)
+#define ISI_CTRL_SRST                           (1 << 2)
+
+/* Bitfields in SR */
+#define ISI_SR_SIP                              (1 << 19)
+/* Also using in SR/IER/IDR/IMR */
+#define ISI_SR_VSYNC                            (1 << 10)
+#define ISI_SR_PXFR_DONE                        (1 << 16)
+#define ISI_SR_CXFR_DONE                        (1 << 17)
+#define ISI_SR_P_OVR                            (1 << 24)
+#define ISI_SR_C_OVR                            (1 << 25)
+#define ISI_SR_CRC_ERR                          (1 << 26)
+#define ISI_SR_FR_OVR                           (1 << 27)
+
+/* Bitfields in DMA_C_CTRL & in DMA_P_CTRL */
+#define ISI_DMA_CTRL_FETCH                      (1 << 0)
+#define ISI_DMA_CTRL_WB                         (1 << 1)
+#define ISI_DMA_CTRL_IEN                        (1 << 2)
+#define ISI_DMA_CTRL_DONE                       (1 << 3)
+
+/* Bitfields in DMA_CHSR/CHER/CHDR */
+#define ISI_DMA_CHSR_P_CH                       (1 << 0)
+#define ISI_DMA_CHSR_C_CH                       (1 << 1)
+
+/* Definition for isi_platform_data */
+#define ISI_DATAWIDTH_8                         0x01
+#define ISI_DATAWIDTH_10                        0x02
+
+struct isi_platform_data {
+        u8 has_emb_sync;
+        u8 emb_crc_sync;
+        u8 hsync_act_low;
+        u8 vsync_act_low;
+        u8 pclk_act_falling;
+        u8 isi_full_mode;
+        u32 data_width_flags;
+        /* Using for ISI_CFG1 */
+        u32 frate;
+};
+
+#endif /* __ATMEL_ISI_H__ */