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path: root/drivers/media/usb/cpia2/cpia2_core.c
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Diffstat (limited to 'drivers/media/usb/cpia2/cpia2_core.c')
-rw-r--r--drivers/media/usb/cpia2/cpia2_core.c2417
1 files changed, 2417 insertions, 0 deletions
diff --git a/drivers/media/usb/cpia2/cpia2_core.c b/drivers/media/usb/cpia2/cpia2_core.c
new file mode 100644
index 000000000000..187012ce444b
--- /dev/null
+++ b/drivers/media/usb/cpia2/cpia2_core.c
@@ -0,0 +1,2417 @@
+/****************************************************************************
+ *
+ * Filename: cpia2_core.c
+ *
+ * Copyright 2001, STMicrolectronics, Inc.
+ * Contact: steve.miller@st.com
+ *
+ * Description:
+ * This is a USB driver for CPia2 based video cameras.
+ * The infrastructure of this driver is based on the cpia usb driver by
+ * Jochen Scharrlach and Johannes Erdfeldt.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ * Stripped of 2.4 stuff ready for main kernel submit by
+ * Alan Cox <alan@lxorguk.ukuu.org.uk>
+ *
+ ****************************************************************************/
+
+#include "cpia2.h"
+
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/mm.h>
+#include <linux/vmalloc.h>
+#include <linux/firmware.h>
+
+#define FIRMWARE "cpia2/stv0672_vp4.bin"
+MODULE_FIRMWARE(FIRMWARE);
+
+/* #define _CPIA2_DEBUG_ */
+
+#ifdef _CPIA2_DEBUG_
+
+static const char *block_name[] = {
+ "System",
+ "VC",
+ "VP",
+ "IDATA"
+};
+#endif
+
+static unsigned int debugs_on; /* default 0 - DEBUG_REG */
+
+
+/******************************************************************************
+ *
+ * Forward Declarations
+ *
+ *****************************************************************************/
+static int apply_vp_patch(struct camera_data *cam);
+static int set_default_user_mode(struct camera_data *cam);
+static int set_vw_size(struct camera_data *cam, int size);
+static int configure_sensor(struct camera_data *cam,
+ int reqwidth, int reqheight);
+static int config_sensor_410(struct camera_data *cam,
+ int reqwidth, int reqheight);
+static int config_sensor_500(struct camera_data *cam,
+ int reqwidth, int reqheight);
+static int set_all_properties(struct camera_data *cam);
+static void wake_system(struct camera_data *cam);
+static void set_lowlight_boost(struct camera_data *cam);
+static void reset_camera_struct(struct camera_data *cam);
+static int cpia2_set_high_power(struct camera_data *cam);
+
+/* Here we want the physical address of the memory.
+ * This is used when initializing the contents of the
+ * area and marking the pages as reserved.
+ */
+static inline unsigned long kvirt_to_pa(unsigned long adr)
+{
+ unsigned long kva, ret;
+
+ kva = (unsigned long) page_address(vmalloc_to_page((void *)adr));
+ kva |= adr & (PAGE_SIZE-1); /* restore the offset */
+ ret = __pa(kva);
+ return ret;
+}
+
+static void *rvmalloc(unsigned long size)
+{
+ void *mem;
+ unsigned long adr;
+
+ /* Round it off to PAGE_SIZE */
+ size = PAGE_ALIGN(size);
+
+ mem = vmalloc_32(size);
+ if (!mem)
+ return NULL;
+
+ memset(mem, 0, size); /* Clear the ram out, no junk to the user */
+ adr = (unsigned long) mem;
+
+ while ((long)size > 0) {
+ SetPageReserved(vmalloc_to_page((void *)adr));
+ adr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+ return mem;
+}
+
+static void rvfree(void *mem, unsigned long size)
+{
+ unsigned long adr;
+
+ if (!mem)
+ return;
+
+ size = PAGE_ALIGN(size);
+
+ adr = (unsigned long) mem;
+ while ((long)size > 0) {
+ ClearPageReserved(vmalloc_to_page((void *)adr));
+ adr += PAGE_SIZE;
+ size -= PAGE_SIZE;
+ }
+ vfree(mem);
+}
+
+/******************************************************************************
+ *
+ * cpia2_do_command
+ *
+ * Send an arbitrary command to the camera. For commands that read from
+ * the camera, copy the buffers into the proper param structures.
+ *****************************************************************************/
+int cpia2_do_command(struct camera_data *cam,
+ u32 command, u8 direction, u8 param)
+{
+ int retval = 0;
+ struct cpia2_command cmd;
+ unsigned int device = cam->params.pnp_id.device_type;
+
+ cmd.command = command;
+ cmd.reg_count = 2; /* default */
+ cmd.direction = direction;
+
+ /***
+ * Set up the command.
+ ***/
+ switch (command) {
+ case CPIA2_CMD_GET_VERSION:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.start = CPIA2_SYSTEM_DEVICE_HI;
+ break;
+ case CPIA2_CMD_GET_PNP_ID:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 8;
+ cmd.start = CPIA2_SYSTEM_DESCRIP_VID_HI;
+ break;
+ case CPIA2_CMD_GET_ASIC_TYPE:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.start = CPIA2_VC_ASIC_ID;
+ break;
+ case CPIA2_CMD_GET_SENSOR:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.start = CPIA2_VP_SENSOR_FLAGS;
+ break;
+ case CPIA2_CMD_GET_VP_DEVICE:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.start = CPIA2_VP_DEVICEH;
+ break;
+ case CPIA2_CMD_SET_VP_BRIGHTNESS:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_BRIGHTNESS:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ if (device == DEVICE_STV_672)
+ cmd.start = CPIA2_VP4_EXPOSURE_TARGET;
+ else
+ cmd.start = CPIA2_VP5_EXPOSURE_TARGET;
+ break;
+ case CPIA2_CMD_SET_CONTRAST:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_CONTRAST:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_YRANGE;
+ break;
+ case CPIA2_CMD_SET_VP_SATURATION:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_SATURATION:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ if (device == DEVICE_STV_672)
+ cmd.start = CPIA2_VP_SATURATION;
+ else
+ cmd.start = CPIA2_VP5_MCUVSATURATION;
+ break;
+ case CPIA2_CMD_SET_VP_GPIO_DATA:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_GPIO_DATA:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_GPIO_DATA;
+ break;
+ case CPIA2_CMD_SET_VP_GPIO_DIRECTION:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_GPIO_DIRECTION:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_GPIO_DIRECTION;
+ break;
+ case CPIA2_CMD_SET_VC_MP_GPIO_DATA:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VC_MP_GPIO_DATA:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VC_MP_DATA;
+ break;
+ case CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VC_MP_DIR;
+ break;
+ case CPIA2_CMD_ENABLE_PACKET_CTRL:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.start = CPIA2_SYSTEM_INT_PACKET_CTRL;
+ cmd.reg_count = 1;
+ cmd.buffer.block_data[0] = param;
+ break;
+ case CPIA2_CMD_SET_FLICKER_MODES:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_FLICKER_MODES:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_FLICKER_MODES;
+ break;
+ case CPIA2_CMD_RESET_FIFO: /* clear fifo and enable stream block */
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.reg_count = 2;
+ cmd.start = 0;
+ cmd.buffer.registers[0].index = CPIA2_VC_ST_CTRL;
+ cmd.buffer.registers[0].value = CPIA2_VC_ST_CTRL_SRC_VC |
+ CPIA2_VC_ST_CTRL_DST_USB | CPIA2_VC_ST_CTRL_EOF_DETECT;
+ cmd.buffer.registers[1].index = CPIA2_VC_ST_CTRL;
+ cmd.buffer.registers[1].value = CPIA2_VC_ST_CTRL_SRC_VC |
+ CPIA2_VC_ST_CTRL_DST_USB |
+ CPIA2_VC_ST_CTRL_EOF_DETECT |
+ CPIA2_VC_ST_CTRL_FIFO_ENABLE;
+ break;
+ case CPIA2_CMD_SET_HI_POWER:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 2;
+ cmd.buffer.registers[0].index =
+ CPIA2_SYSTEM_SYSTEM_CONTROL;
+ cmd.buffer.registers[1].index =
+ CPIA2_SYSTEM_SYSTEM_CONTROL;
+ cmd.buffer.registers[0].value = CPIA2_SYSTEM_CONTROL_CLEAR_ERR;
+ cmd.buffer.registers[1].value =
+ CPIA2_SYSTEM_CONTROL_HIGH_POWER;
+ break;
+ case CPIA2_CMD_SET_LOW_POWER:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
+ cmd.buffer.block_data[0] = 0;
+ break;
+ case CPIA2_CMD_CLEAR_V2W_ERR:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
+ cmd.buffer.block_data[0] = CPIA2_SYSTEM_CONTROL_CLEAR_ERR;
+ break;
+ case CPIA2_CMD_SET_USER_MODE: /* Then fall through */
+ cmd.buffer.block_data[0] = param;
+ case CPIA2_CMD_GET_USER_MODE:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ if (device == DEVICE_STV_672)
+ cmd.start = CPIA2_VP4_USER_MODE;
+ else
+ cmd.start = CPIA2_VP5_USER_MODE;
+ break;
+ case CPIA2_CMD_FRAMERATE_REQ:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ if (device == DEVICE_STV_672)
+ cmd.start = CPIA2_VP4_FRAMERATE_REQUEST;
+ else
+ cmd.start = CPIA2_VP5_FRAMERATE_REQUEST;
+ cmd.buffer.block_data[0] = param;
+ break;
+ case CPIA2_CMD_SET_WAKEUP:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_WAKEUP:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VC_WAKEUP;
+ break;
+ case CPIA2_CMD_SET_PW_CONTROL:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_PW_CONTROL:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VC_PW_CTRL;
+ break;
+ case CPIA2_CMD_GET_VP_SYSTEM_STATE:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_SYSTEMSTATE;
+ break;
+ case CPIA2_CMD_SET_SYSTEM_CTRL:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_SYSTEM_CTRL:
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_SYSTEM_SYSTEM_CONTROL;
+ break;
+ case CPIA2_CMD_SET_VP_SYSTEM_CTRL:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_SYSTEM_CTRL:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_SYSTEMCTRL;
+ break;
+ case CPIA2_CMD_SET_VP_EXP_MODES:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VP_EXP_MODES:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_EXPOSURE_MODES;
+ break;
+ case CPIA2_CMD_SET_DEVICE_CONFIG:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_DEVICE_CONFIG:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_DEVICE_CONFIG;
+ break;
+ case CPIA2_CMD_SET_SERIAL_ADDR:
+ cmd.buffer.block_data[0] = param;
+ cmd.req_mode =
+ CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_SYSTEM_VP_SERIAL_ADDR;
+ break;
+ case CPIA2_CMD_SET_SENSOR_CR1:
+ cmd.buffer.block_data[0] = param;
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_SENSOR_CR1;
+ break;
+ case CPIA2_CMD_SET_VC_CONTROL:
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_VC_CONTROL:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VC_VC_CTRL;
+ break;
+ case CPIA2_CMD_SET_TARGET_KB:
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.reg_count = 1;
+ cmd.buffer.registers[0].index = CPIA2_VC_VC_TARGET_KB;
+ cmd.buffer.registers[0].value = param;
+ break;
+ case CPIA2_CMD_SET_DEF_JPEG_OPT:
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.reg_count = 4;
+ cmd.buffer.registers[0].index = CPIA2_VC_VC_JPEG_OPT;
+ cmd.buffer.registers[0].value =
+ CPIA2_VC_VC_JPEG_OPT_DOUBLE_SQUEEZE;
+ cmd.buffer.registers[1].index = CPIA2_VC_VC_USER_SQUEEZE;
+ cmd.buffer.registers[1].value = 20;
+ cmd.buffer.registers[2].index = CPIA2_VC_VC_CREEP_PERIOD;
+ cmd.buffer.registers[2].value = 2;
+ cmd.buffer.registers[3].index = CPIA2_VC_VC_JPEG_OPT;
+ cmd.buffer.registers[3].value = CPIA2_VC_VC_JPEG_OPT_DEFAULT;
+ break;
+ case CPIA2_CMD_REHASH_VP4:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP_REHASH_VALUES;
+ cmd.buffer.block_data[0] = param;
+ break;
+ case CPIA2_CMD_SET_USER_EFFECTS: /* Note: Be careful with this as
+ this register can also affect
+ flicker modes */
+ cmd.buffer.block_data[0] = param; /* Then fall through */
+ case CPIA2_CMD_GET_USER_EFFECTS:
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 1;
+ if (device == DEVICE_STV_672)
+ cmd.start = CPIA2_VP4_USER_EFFECTS;
+ else
+ cmd.start = CPIA2_VP5_USER_EFFECTS;
+ break;
+ default:
+ LOG("DoCommand received invalid command\n");
+ return -EINVAL;
+ }
+
+ retval = cpia2_send_command(cam, &cmd);
+ if (retval) {
+ return retval;
+ }
+
+ /***
+ * Now copy any results from a read into the appropriate param struct.
+ ***/
+ switch (command) {
+ case CPIA2_CMD_GET_VERSION:
+ cam->params.version.firmware_revision_hi =
+ cmd.buffer.block_data[0];
+ cam->params.version.firmware_revision_lo =
+ cmd.buffer.block_data[1];
+ break;
+ case CPIA2_CMD_GET_PNP_ID:
+ cam->params.pnp_id.vendor = (cmd.buffer.block_data[0] << 8) |
+ cmd.buffer.block_data[1];
+ cam->params.pnp_id.product = (cmd.buffer.block_data[2] << 8) |
+ cmd.buffer.block_data[3];
+ cam->params.pnp_id.device_revision =
+ (cmd.buffer.block_data[4] << 8) |
+ cmd.buffer.block_data[5];
+ if (cam->params.pnp_id.vendor == 0x553) {
+ if (cam->params.pnp_id.product == 0x100) {
+ cam->params.pnp_id.device_type = DEVICE_STV_672;
+ } else if (cam->params.pnp_id.product == 0x140 ||
+ cam->params.pnp_id.product == 0x151) {
+ cam->params.pnp_id.device_type = DEVICE_STV_676;
+ }
+ }
+ break;
+ case CPIA2_CMD_GET_ASIC_TYPE:
+ cam->params.version.asic_id = cmd.buffer.block_data[0];
+ cam->params.version.asic_rev = cmd.buffer.block_data[1];
+ break;
+ case CPIA2_CMD_GET_SENSOR:
+ cam->params.version.sensor_flags = cmd.buffer.block_data[0];
+ cam->params.version.sensor_rev = cmd.buffer.block_data[1];
+ break;
+ case CPIA2_CMD_GET_VP_DEVICE:
+ cam->params.version.vp_device_hi = cmd.buffer.block_data[0];
+ cam->params.version.vp_device_lo = cmd.buffer.block_data[1];
+ break;
+ case CPIA2_CMD_GET_VP_GPIO_DATA:
+ cam->params.vp_params.gpio_data = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VP_GPIO_DIRECTION:
+ cam->params.vp_params.gpio_direction = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION:
+ cam->params.vc_params.vc_mp_direction =cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VC_MP_GPIO_DATA:
+ cam->params.vc_params.vc_mp_data = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_FLICKER_MODES:
+ cam->params.flicker_control.cam_register =
+ cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_WAKEUP:
+ cam->params.vc_params.wakeup = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_PW_CONTROL:
+ cam->params.vc_params.pw_control = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_SYSTEM_CTRL:
+ cam->params.camera_state.system_ctrl = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VP_SYSTEM_STATE:
+ cam->params.vp_params.system_state = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VP_SYSTEM_CTRL:
+ cam->params.vp_params.system_ctrl = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VP_EXP_MODES:
+ cam->params.vp_params.exposure_modes = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_DEVICE_CONFIG:
+ cam->params.vp_params.device_config = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_VC_CONTROL:
+ cam->params.vc_params.vc_control = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_USER_MODE:
+ cam->params.vp_params.video_mode = cmd.buffer.block_data[0];
+ break;
+ case CPIA2_CMD_GET_USER_EFFECTS:
+ cam->params.vp_params.user_effects = cmd.buffer.block_data[0];
+ break;
+ default:
+ break;
+ }
+ return retval;
+}
+
+/******************************************************************************
+ *
+ * cpia2_send_command
+ *
+ *****************************************************************************/
+
+#define DIR(cmd) ((cmd->direction == TRANSFER_WRITE) ? "Write" : "Read")
+#define BINDEX(cmd) (cmd->req_mode & 0x03)
+
+int cpia2_send_command(struct camera_data *cam, struct cpia2_command *cmd)
+{
+ u8 count;
+ u8 start;
+ u8 *buffer;
+ int retval;
+
+ switch (cmd->req_mode & 0x0c) {
+ case CAMERAACCESS_TYPE_RANDOM:
+ count = cmd->reg_count * sizeof(struct cpia2_register);
+ start = 0;
+ buffer = (u8 *) & cmd->buffer;
+ if (debugs_on & DEBUG_REG)
+ DBG("%s Random: Register block %s\n", DIR(cmd),
+ block_name[BINDEX(cmd)]);
+ break;
+ case CAMERAACCESS_TYPE_BLOCK:
+ count = cmd->reg_count;
+ start = cmd->start;
+ buffer = cmd->buffer.block_data;
+ if (debugs_on & DEBUG_REG)
+ DBG("%s Block: Register block %s\n", DIR(cmd),
+ block_name[BINDEX(cmd)]);
+ break;
+ case CAMERAACCESS_TYPE_MASK:
+ count = cmd->reg_count * sizeof(struct cpia2_reg_mask);
+ start = 0;
+ buffer = (u8 *) & cmd->buffer;
+ if (debugs_on & DEBUG_REG)
+ DBG("%s Mask: Register block %s\n", DIR(cmd),
+ block_name[BINDEX(cmd)]);
+ break;
+ case CAMERAACCESS_TYPE_REPEAT: /* For patch blocks only */
+ count = cmd->reg_count;
+ start = cmd->start;
+ buffer = cmd->buffer.block_data;
+ if (debugs_on & DEBUG_REG)
+ DBG("%s Repeat: Register block %s\n", DIR(cmd),
+ block_name[BINDEX(cmd)]);
+ break;
+ default:
+ LOG("%s: invalid request mode\n",__func__);
+ return -EINVAL;
+ }
+
+ retval = cpia2_usb_transfer_cmd(cam,
+ buffer,
+ cmd->req_mode,
+ start, count, cmd->direction);
+#ifdef _CPIA2_DEBUG_
+ if (debugs_on & DEBUG_REG) {
+ int i;
+ for (i = 0; i < cmd->reg_count; i++) {
+ if((cmd->req_mode & 0x0c) == CAMERAACCESS_TYPE_BLOCK)
+ KINFO("%s Block: [0x%02X] = 0x%02X\n",
+ DIR(cmd), start + i, buffer[i]);
+ if((cmd->req_mode & 0x0c) == CAMERAACCESS_TYPE_RANDOM)
+ KINFO("%s Random: [0x%02X] = 0x%02X\n",
+ DIR(cmd), cmd->buffer.registers[i].index,
+ cmd->buffer.registers[i].value);
+ }
+ }
+#endif
+
+ return retval;
+};
+
+/*************
+ * Functions to implement camera functionality
+ *************/
+/******************************************************************************
+ *
+ * cpia2_get_version_info
+ *
+ *****************************************************************************/
+static void cpia2_get_version_info(struct camera_data *cam)
+{
+ cpia2_do_command(cam, CPIA2_CMD_GET_VERSION, TRANSFER_READ, 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_PNP_ID, TRANSFER_READ, 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_ASIC_TYPE, TRANSFER_READ, 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_SENSOR, TRANSFER_READ, 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_VP_DEVICE, TRANSFER_READ, 0);
+}
+
+/******************************************************************************
+ *
+ * cpia2_reset_camera
+ *
+ * Called at least during the open process, sets up initial params.
+ *****************************************************************************/
+int cpia2_reset_camera(struct camera_data *cam)
+{
+ u8 tmp_reg;
+ int retval = 0;
+ int target_kb;
+ int i;
+ struct cpia2_command cmd;
+
+ /***
+ * VC setup
+ ***/
+ retval = configure_sensor(cam,
+ cam->params.roi.width,
+ cam->params.roi.height);
+ if (retval < 0) {
+ ERR("Couldn't configure sensor, error=%d\n", retval);
+ return retval;
+ }
+
+ /* Clear FIFO and route/enable stream block */
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.direction = TRANSFER_WRITE;
+ cmd.reg_count = 2;
+ cmd.buffer.registers[0].index = CPIA2_VC_ST_CTRL;
+ cmd.buffer.registers[0].value = CPIA2_VC_ST_CTRL_SRC_VC |
+ CPIA2_VC_ST_CTRL_DST_USB | CPIA2_VC_ST_CTRL_EOF_DETECT;
+ cmd.buffer.registers[1].index = CPIA2_VC_ST_CTRL;
+ cmd.buffer.registers[1].value = CPIA2_VC_ST_CTRL_SRC_VC |
+ CPIA2_VC_ST_CTRL_DST_USB |
+ CPIA2_VC_ST_CTRL_EOF_DETECT | CPIA2_VC_ST_CTRL_FIFO_ENABLE;
+
+ cpia2_send_command(cam, &cmd);
+
+ cpia2_set_high_power(cam);
+
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
+ /* Enable button notification */
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_SYSTEM;
+ cmd.buffer.registers[0].index = CPIA2_SYSTEM_INT_PACKET_CTRL;
+ cmd.buffer.registers[0].value =
+ CPIA2_SYSTEM_INT_PACKET_CTRL_ENABLE_SW_XX;
+ cmd.reg_count = 1;
+ cpia2_send_command(cam, &cmd);
+ }
+
+ schedule_timeout_interruptible(msecs_to_jiffies(100));
+
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672)
+ retval = apply_vp_patch(cam);
+
+ /* wait for vp to go to sleep */
+ schedule_timeout_interruptible(msecs_to_jiffies(100));
+
+ /***
+ * If this is a 676, apply VP5 fixes before we start streaming
+ ***/
+ if (cam->params.pnp_id.device_type == DEVICE_STV_676) {
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
+
+ /* The following writes improve the picture */
+ cmd.buffer.registers[0].index = CPIA2_VP5_MYBLACK_LEVEL;
+ cmd.buffer.registers[0].value = 0; /* reduce from the default
+ * rec 601 pedestal of 16 */
+ cmd.buffer.registers[1].index = CPIA2_VP5_MCYRANGE;
+ cmd.buffer.registers[1].value = 0x92; /* increase from 100% to
+ * (256/256 - 31) to fill
+ * available range */
+ cmd.buffer.registers[2].index = CPIA2_VP5_MYCEILING;
+ cmd.buffer.registers[2].value = 0xFF; /* Increase from the
+ * default rec 601 ceiling
+ * of 240 */
+ cmd.buffer.registers[3].index = CPIA2_VP5_MCUVSATURATION;
+ cmd.buffer.registers[3].value = 0xFF; /* Increase from the rec
+ * 601 100% level (128)
+ * to 145-192 */
+ cmd.buffer.registers[4].index = CPIA2_VP5_ANTIFLKRSETUP;
+ cmd.buffer.registers[4].value = 0x80; /* Inhibit the
+ * anti-flicker */
+
+ /* The following 4 writes are a fix to allow QVGA to work at 30 fps */
+ cmd.buffer.registers[5].index = CPIA2_VP_RAM_ADDR_H;
+ cmd.buffer.registers[5].value = 0x01;
+ cmd.buffer.registers[6].index = CPIA2_VP_RAM_ADDR_L;
+ cmd.buffer.registers[6].value = 0xE3;
+ cmd.buffer.registers[7].index = CPIA2_VP_RAM_DATA;
+ cmd.buffer.registers[7].value = 0x02;
+ cmd.buffer.registers[8].index = CPIA2_VP_RAM_DATA;
+ cmd.buffer.registers[8].value = 0xFC;
+
+ cmd.direction = TRANSFER_WRITE;
+ cmd.reg_count = 9;
+
+ cpia2_send_command(cam, &cmd);
+ }
+
+ /* Activate all settings and start the data stream */
+ /* Set user mode */
+ set_default_user_mode(cam);
+
+ /* Give VP time to wake up */
+ schedule_timeout_interruptible(msecs_to_jiffies(100));
+
+ set_all_properties(cam);
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_USER_MODE, TRANSFER_READ, 0);
+ DBG("After SetAllProperties(cam), user mode is 0x%0X\n",
+ cam->params.vp_params.video_mode);
+
+ /***
+ * Set audio regulator off. This and the code to set the compresison
+ * state are too complex to form a CPIA2_CMD_, and seem to be somewhat
+ * intertwined. This stuff came straight from the windows driver.
+ ***/
+ /* Turn AutoExposure off in VP and enable the serial bridge to the sensor */
+ cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_CTRL, TRANSFER_READ, 0);
+ tmp_reg = cam->params.vp_params.system_ctrl;
+ cmd.buffer.registers[0].value = tmp_reg &
+ (tmp_reg & (CPIA2_VP_SYSTEMCTRL_HK_CONTROL ^ 0xFF));
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_DEVICE_CONFIG, TRANSFER_READ, 0);
+ cmd.buffer.registers[1].value = cam->params.vp_params.device_config |
+ CPIA2_VP_DEVICE_CONFIG_SERIAL_BRIDGE;
+ cmd.buffer.registers[0].index = CPIA2_VP_SYSTEMCTRL;
+ cmd.buffer.registers[1].index = CPIA2_VP_DEVICE_CONFIG;
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
+ cmd.reg_count = 2;
+ cmd.direction = TRANSFER_WRITE;
+ cmd.start = 0;
+ cpia2_send_command(cam, &cmd);
+
+ /* Set the correct I2C address in the CPiA-2 system register */
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_SERIAL_ADDR,
+ TRANSFER_WRITE,
+ CPIA2_SYSTEM_VP_SERIAL_ADDR_SENSOR);
+
+ /* Now have sensor access - set bit to turn the audio regulator off */
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_SENSOR_CR1,
+ TRANSFER_WRITE, CPIA2_SENSOR_CR1_DOWN_AUDIO_REGULATOR);
+
+ /* Set the correct I2C address in the CPiA-2 system register */
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672)
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_SERIAL_ADDR,
+ TRANSFER_WRITE,
+ CPIA2_SYSTEM_VP_SERIAL_ADDR_VP); // 0x88
+ else
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_SERIAL_ADDR,
+ TRANSFER_WRITE,
+ CPIA2_SYSTEM_VP_SERIAL_ADDR_676_VP); // 0x8a
+
+ /* increase signal drive strength */
+ if (cam->params.pnp_id.device_type == DEVICE_STV_676)
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_VP_EXP_MODES,
+ TRANSFER_WRITE,
+ CPIA2_VP_EXPOSURE_MODES_COMPILE_EXP);
+
+ /* Start autoexposure */
+ cpia2_do_command(cam, CPIA2_CMD_GET_DEVICE_CONFIG, TRANSFER_READ, 0);
+ cmd.buffer.registers[0].value = cam->params.vp_params.device_config &
+ (CPIA2_VP_DEVICE_CONFIG_SERIAL_BRIDGE ^ 0xFF);
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_CTRL, TRANSFER_READ, 0);
+ cmd.buffer.registers[1].value =
+ cam->params.vp_params.system_ctrl | CPIA2_VP_SYSTEMCTRL_HK_CONTROL;
+
+ cmd.buffer.registers[0].index = CPIA2_VP_DEVICE_CONFIG;
+ cmd.buffer.registers[1].index = CPIA2_VP_SYSTEMCTRL;
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VP;
+ cmd.reg_count = 2;
+ cmd.direction = TRANSFER_WRITE;
+
+ cpia2_send_command(cam, &cmd);
+
+ /* Set compression state */
+ cpia2_do_command(cam, CPIA2_CMD_GET_VC_CONTROL, TRANSFER_READ, 0);
+ if (cam->params.compression.inhibit_htables) {
+ tmp_reg = cam->params.vc_params.vc_control |
+ CPIA2_VC_VC_CTRL_INHIBIT_H_TABLES;
+ } else {
+ tmp_reg = cam->params.vc_params.vc_control &
+ ~CPIA2_VC_VC_CTRL_INHIBIT_H_TABLES;
+ }
+ cpia2_do_command(cam, CPIA2_CMD_SET_VC_CONTROL, TRANSFER_WRITE,tmp_reg);
+
+ /* Set target size (kb) on vc
+ This is a heuristic based on the quality parameter and the raw
+ framesize in kB divided by 16 (the compression factor when the
+ quality is 100%) */
+ target_kb = (cam->width * cam->height * 2 / 16384) *
+ cam->params.vc_params.quality / 100;
+ if (target_kb < 1)
+ target_kb = 1;
+ cpia2_do_command(cam, CPIA2_CMD_SET_TARGET_KB,
+ TRANSFER_WRITE, target_kb);
+
+ /* Wiggle VC Reset */
+ /***
+ * First read and wait a bit.
+ ***/
+ for (i = 0; i < 50; i++) {
+ cpia2_do_command(cam, CPIA2_CMD_GET_PW_CONTROL,
+ TRANSFER_READ, 0);
+ }
+
+ tmp_reg = cam->params.vc_params.pw_control;
+ tmp_reg &= ~CPIA2_VC_PW_CTRL_VC_RESET_N;
+
+ cpia2_do_command(cam, CPIA2_CMD_SET_PW_CONTROL, TRANSFER_WRITE,tmp_reg);
+
+ tmp_reg |= CPIA2_VC_PW_CTRL_VC_RESET_N;
+ cpia2_do_command(cam, CPIA2_CMD_SET_PW_CONTROL, TRANSFER_WRITE,tmp_reg);
+
+ cpia2_do_command(cam, CPIA2_CMD_SET_DEF_JPEG_OPT, TRANSFER_WRITE, 0);
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_USER_MODE, TRANSFER_READ, 0);
+ DBG("After VC RESET, user mode is 0x%0X\n",
+ cam->params.vp_params.video_mode);
+
+ return retval;
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_high_power
+ *
+ *****************************************************************************/
+static int cpia2_set_high_power(struct camera_data *cam)
+{
+ int i;
+ for (i = 0; i <= 50; i++) {
+ /* Read system status */
+ cpia2_do_command(cam,CPIA2_CMD_GET_SYSTEM_CTRL,TRANSFER_READ,0);
+
+ /* If there is an error, clear it */
+ if(cam->params.camera_state.system_ctrl &
+ CPIA2_SYSTEM_CONTROL_V2W_ERR)
+ cpia2_do_command(cam, CPIA2_CMD_CLEAR_V2W_ERR,
+ TRANSFER_WRITE, 0);
+
+ /* Try to set high power mode */
+ cpia2_do_command(cam, CPIA2_CMD_SET_SYSTEM_CTRL,
+ TRANSFER_WRITE, 1);
+
+ /* Try to read something in VP to check if everything is awake */
+ cpia2_do_command(cam, CPIA2_CMD_GET_VP_SYSTEM_STATE,
+ TRANSFER_READ, 0);
+ if (cam->params.vp_params.system_state &
+ CPIA2_VP_SYSTEMSTATE_HK_ALIVE) {
+ break;
+ } else if (i == 50) {
+ cam->params.camera_state.power_mode = LO_POWER_MODE;
+ ERR("Camera did not wake up\n");
+ return -EIO;
+ }
+ }
+
+ DBG("System now in high power state\n");
+ cam->params.camera_state.power_mode = HI_POWER_MODE;
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_low_power
+ *
+ *****************************************************************************/
+int cpia2_set_low_power(struct camera_data *cam)
+{
+ cam->params.camera_state.power_mode = LO_POWER_MODE;
+ cpia2_do_command(cam, CPIA2_CMD_SET_SYSTEM_CTRL, TRANSFER_WRITE, 0);
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * apply_vp_patch
+ *
+ *****************************************************************************/
+static int cpia2_send_onebyte_command(struct camera_data *cam,
+ struct cpia2_command *cmd,
+ u8 start, u8 datum)
+{
+ cmd->buffer.block_data[0] = datum;
+ cmd->start = start;
+ cmd->reg_count = 1;
+ return cpia2_send_command(cam, cmd);
+}
+
+static int apply_vp_patch(struct camera_data *cam)
+{
+ const struct firmware *fw;
+ const char fw_name[] = FIRMWARE;
+ int i, ret;
+ struct cpia2_command cmd;
+
+ ret = request_firmware(&fw, fw_name, &cam->dev->dev);
+ if (ret) {
+ printk(KERN_ERR "cpia2: failed to load VP patch \"%s\"\n",
+ fw_name);
+ return ret;
+ }
+
+ cmd.req_mode = CAMERAACCESS_TYPE_REPEAT | CAMERAACCESS_VP;
+ cmd.direction = TRANSFER_WRITE;
+
+ /* First send the start address... */
+ cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
+ cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
+
+ /* ... followed by the data payload */
+ for (i = 2; i < fw->size; i += 64) {
+ cmd.start = 0x0C; /* Data */
+ cmd.reg_count = min_t(int, 64, fw->size - i);
+ memcpy(cmd.buffer.block_data, &fw->data[i], cmd.reg_count);
+ cpia2_send_command(cam, &cmd);
+ }
+
+ /* Next send the start address... */
+ cpia2_send_onebyte_command(cam, &cmd, 0x0A, fw->data[0]); /* hi */
+ cpia2_send_onebyte_command(cam, &cmd, 0x0B, fw->data[1]); /* lo */
+
+ /* ... followed by the 'goto' command */
+ cpia2_send_onebyte_command(cam, &cmd, 0x0D, 1);
+
+ release_firmware(fw);
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * set_default_user_mode
+ *
+ *****************************************************************************/
+static int set_default_user_mode(struct camera_data *cam)
+{
+ unsigned char user_mode;
+ unsigned char frame_rate;
+ int width = cam->params.roi.width;
+ int height = cam->params.roi.height;
+
+ switch (cam->params.version.sensor_flags) {
+ case CPIA2_VP_SENSOR_FLAGS_404:
+ case CPIA2_VP_SENSOR_FLAGS_407:
+ case CPIA2_VP_SENSOR_FLAGS_409:
+ case CPIA2_VP_SENSOR_FLAGS_410:
+ if ((width > STV_IMAGE_QCIF_COLS)
+ || (height > STV_IMAGE_QCIF_ROWS)) {
+ user_mode = CPIA2_VP_USER_MODE_CIF;
+ } else {
+ user_mode = CPIA2_VP_USER_MODE_QCIFDS;
+ }
+ frame_rate = CPIA2_VP_FRAMERATE_30;
+ break;
+ case CPIA2_VP_SENSOR_FLAGS_500:
+ if ((width > STV_IMAGE_CIF_COLS)
+ || (height > STV_IMAGE_CIF_ROWS)) {
+ user_mode = CPIA2_VP_USER_MODE_VGA;
+ } else {
+ user_mode = CPIA2_VP_USER_MODE_QVGADS;
+ }
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672)
+ frame_rate = CPIA2_VP_FRAMERATE_15;
+ else
+ frame_rate = CPIA2_VP_FRAMERATE_30;
+ break;
+ default:
+ LOG("%s: Invalid sensor flag value 0x%0X\n",__func__,
+ cam->params.version.sensor_flags);
+ return -EINVAL;
+ }
+
+ DBG("Sensor flag = 0x%0x, user mode = 0x%0x, frame rate = 0x%X\n",
+ cam->params.version.sensor_flags, user_mode, frame_rate);
+ cpia2_do_command(cam, CPIA2_CMD_SET_USER_MODE, TRANSFER_WRITE,
+ user_mode);
+ if(cam->params.vp_params.frame_rate > 0 &&
+ frame_rate > cam->params.vp_params.frame_rate)
+ frame_rate = cam->params.vp_params.frame_rate;
+
+ cpia2_set_fps(cam, frame_rate);
+
+// if (cam->params.pnp_id.device_type == DEVICE_STV_676)
+// cpia2_do_command(cam,
+// CPIA2_CMD_SET_VP_SYSTEM_CTRL,
+// TRANSFER_WRITE,
+// CPIA2_VP_SYSTEMCTRL_HK_CONTROL |
+// CPIA2_VP_SYSTEMCTRL_POWER_CONTROL);
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_match_video_size
+ *
+ * return the best match, where 'best' is as always
+ * the largest that is not bigger than what is requested.
+ *****************************************************************************/
+int cpia2_match_video_size(int width, int height)
+{
+ if (width >= STV_IMAGE_VGA_COLS && height >= STV_IMAGE_VGA_ROWS)
+ return VIDEOSIZE_VGA;
+
+ if (width >= STV_IMAGE_CIF_COLS && height >= STV_IMAGE_CIF_ROWS)
+ return VIDEOSIZE_CIF;
+
+ if (width >= STV_IMAGE_QVGA_COLS && height >= STV_IMAGE_QVGA_ROWS)
+ return VIDEOSIZE_QVGA;
+
+ if (width >= 288 && height >= 216)
+ return VIDEOSIZE_288_216;
+
+ if (width >= 256 && height >= 192)
+ return VIDEOSIZE_256_192;
+
+ if (width >= 224 && height >= 168)
+ return VIDEOSIZE_224_168;
+
+ if (width >= 192 && height >= 144)
+ return VIDEOSIZE_192_144;
+
+ if (width >= STV_IMAGE_QCIF_COLS && height >= STV_IMAGE_QCIF_ROWS)
+ return VIDEOSIZE_QCIF;
+
+ return -1;
+}
+
+/******************************************************************************
+ *
+ * SetVideoSize
+ *
+ *****************************************************************************/
+static int set_vw_size(struct camera_data *cam, int size)
+{
+ int retval = 0;
+
+ cam->params.vp_params.video_size = size;
+
+ switch (size) {
+ case VIDEOSIZE_VGA:
+ DBG("Setting size to VGA\n");
+ cam->params.roi.width = STV_IMAGE_VGA_COLS;
+ cam->params.roi.height = STV_IMAGE_VGA_ROWS;
+ cam->width = STV_IMAGE_VGA_COLS;
+ cam->height = STV_IMAGE_VGA_ROWS;
+ break;
+ case VIDEOSIZE_CIF:
+ DBG("Setting size to CIF\n");
+ cam->params.roi.width = STV_IMAGE_CIF_COLS;
+ cam->params.roi.height = STV_IMAGE_CIF_ROWS;
+ cam->width = STV_IMAGE_CIF_COLS;
+ cam->height = STV_IMAGE_CIF_ROWS;
+ break;
+ case VIDEOSIZE_QVGA:
+ DBG("Setting size to QVGA\n");
+ cam->params.roi.width = STV_IMAGE_QVGA_COLS;
+ cam->params.roi.height = STV_IMAGE_QVGA_ROWS;
+ cam->width = STV_IMAGE_QVGA_COLS;
+ cam->height = STV_IMAGE_QVGA_ROWS;
+ break;
+ case VIDEOSIZE_288_216:
+ cam->params.roi.width = 288;
+ cam->params.roi.height = 216;
+ cam->width = 288;
+ cam->height = 216;
+ break;
+ case VIDEOSIZE_256_192:
+ cam->width = 256;
+ cam->height = 192;
+ cam->params.roi.width = 256;
+ cam->params.roi.height = 192;
+ break;
+ case VIDEOSIZE_224_168:
+ cam->width = 224;
+ cam->height = 168;
+ cam->params.roi.width = 224;
+ cam->params.roi.height = 168;
+ break;
+ case VIDEOSIZE_192_144:
+ cam->width = 192;
+ cam->height = 144;
+ cam->params.roi.width = 192;
+ cam->params.roi.height = 144;
+ break;
+ case VIDEOSIZE_QCIF:
+ DBG("Setting size to QCIF\n");
+ cam->params.roi.width = STV_IMAGE_QCIF_COLS;
+ cam->params.roi.height = STV_IMAGE_QCIF_ROWS;
+ cam->width = STV_IMAGE_QCIF_COLS;
+ cam->height = STV_IMAGE_QCIF_ROWS;
+ break;
+ default:
+ retval = -EINVAL;
+ }
+ return retval;
+}
+
+/******************************************************************************
+ *
+ * configure_sensor
+ *
+ *****************************************************************************/
+static int configure_sensor(struct camera_data *cam,
+ int req_width, int req_height)
+{
+ int retval;
+
+ switch (cam->params.version.sensor_flags) {
+ case CPIA2_VP_SENSOR_FLAGS_404:
+ case CPIA2_VP_SENSOR_FLAGS_407:
+ case CPIA2_VP_SENSOR_FLAGS_409:
+ case CPIA2_VP_SENSOR_FLAGS_410:
+ retval = config_sensor_410(cam, req_width, req_height);
+ break;
+ case CPIA2_VP_SENSOR_FLAGS_500:
+ retval = config_sensor_500(cam, req_width, req_height);
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ return retval;
+}
+
+/******************************************************************************
+ *
+ * config_sensor_410
+ *
+ *****************************************************************************/
+static int config_sensor_410(struct camera_data *cam,
+ int req_width, int req_height)
+{
+ struct cpia2_command cmd;
+ int i = 0;
+ int image_size;
+ int image_type;
+ int width = req_width;
+ int height = req_height;
+
+ /***
+ * Make sure size doesn't exceed CIF.
+ ***/
+ if (width > STV_IMAGE_CIF_COLS)
+ width = STV_IMAGE_CIF_COLS;
+ if (height > STV_IMAGE_CIF_ROWS)
+ height = STV_IMAGE_CIF_ROWS;
+
+ image_size = cpia2_match_video_size(width, height);
+
+ DBG("Config 410: width = %d, height = %d\n", width, height);
+ DBG("Image size returned is %d\n", image_size);
+ if (image_size >= 0) {
+ set_vw_size(cam, image_size);
+ width = cam->params.roi.width;
+ height = cam->params.roi.height;
+
+ DBG("After set_vw_size(), width = %d, height = %d\n",
+ width, height);
+ if (width <= 176 && height <= 144) {
+ DBG("image type = VIDEOSIZE_QCIF\n");
+ image_type = VIDEOSIZE_QCIF;
+ }
+ else if (width <= 320 && height <= 240) {
+ DBG("image type = VIDEOSIZE_QVGA\n");
+ image_type = VIDEOSIZE_QVGA;
+ }
+ else {
+ DBG("image type = VIDEOSIZE_CIF\n");
+ image_type = VIDEOSIZE_CIF;
+ }
+ } else {
+ ERR("ConfigSensor410 failed\n");
+ return -EINVAL;
+ }
+
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.direction = TRANSFER_WRITE;
+
+ /* VC Format */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_FORMAT;
+ if (image_type == VIDEOSIZE_CIF) {
+ cmd.buffer.registers[i++].value =
+ (u8) (CPIA2_VC_VC_FORMAT_UFIRST |
+ CPIA2_VC_VC_FORMAT_SHORTLINE);
+ } else {
+ cmd.buffer.registers[i++].value =
+ (u8) CPIA2_VC_VC_FORMAT_UFIRST;
+ }
+
+ /* VC Clocks */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_CLOCKS;
+ if (image_type == VIDEOSIZE_QCIF) {
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
+ cmd.buffer.registers[i++].value=
+ (u8)(CPIA2_VC_VC_672_CLOCKS_CIF_DIV_BY_3 |
+ CPIA2_VC_VC_672_CLOCKS_SCALING |
+ CPIA2_VC_VC_CLOCKS_LOGDIV2);
+ DBG("VC_Clocks (0xc4) should be B\n");
+ }
+ else {
+ cmd.buffer.registers[i++].value=
+ (u8)(CPIA2_VC_VC_676_CLOCKS_CIF_DIV_BY_3 |
+ CPIA2_VC_VC_CLOCKS_LOGDIV2);
+ }
+ } else {
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
+ cmd.buffer.registers[i++].value =
+ (u8) (CPIA2_VC_VC_672_CLOCKS_CIF_DIV_BY_3 |
+ CPIA2_VC_VC_CLOCKS_LOGDIV0);
+ }
+ else {
+ cmd.buffer.registers[i++].value =
+ (u8) (CPIA2_VC_VC_676_CLOCKS_CIF_DIV_BY_3 |
+ CPIA2_VC_VC_676_CLOCKS_SCALING |
+ CPIA2_VC_VC_CLOCKS_LOGDIV0);
+ }
+ }
+ DBG("VC_Clocks (0xc4) = 0x%0X\n", cmd.buffer.registers[i-1].value);
+
+ /* Input reqWidth from VC */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_IHSIZE_LO;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value =
+ (u8) (STV_IMAGE_QCIF_COLS / 4);
+ else
+ cmd.buffer.registers[i++].value =
+ (u8) (STV_IMAGE_CIF_COLS / 4);
+
+ /* Timings */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_HI;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 0;
+ else
+ cmd.buffer.registers[i++].value = (u8) 1;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_LO;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 208;
+ else
+ cmd.buffer.registers[i++].value = (u8) 160;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_HI;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 0;
+ else
+ cmd.buffer.registers[i++].value = (u8) 1;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_LO;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 160;
+ else
+ cmd.buffer.registers[i++].value = (u8) 64;
+
+ /* Output Image Size */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_OHSIZE;
+ cmd.buffer.registers[i++].value = cam->params.roi.width / 4;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_OVSIZE;
+ cmd.buffer.registers[i++].value = cam->params.roi.height / 4;
+
+ /* Cropping */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HCROP;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QCIF_COLS / 4) - (width / 4)) / 2);
+ else
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_CIF_COLS / 4) - (width / 4)) / 2);
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VCROP;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QCIF_ROWS / 4) - (height / 4)) / 2);
+ else
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_CIF_ROWS / 4) - (height / 4)) / 2);
+
+ /* Scaling registers (defaults) */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HPHASE;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VPHASE;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HISPAN;
+ cmd.buffer.registers[i++].value = (u8) 31;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VISPAN;
+ cmd.buffer.registers[i++].value = (u8) 31;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HICROP;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VICROP;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HFRACT;
+ cmd.buffer.registers[i++].value = (u8) 0x81; /* = 8/1 = 8 (HIBYTE/LOBYTE) */
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VFRACT;
+ cmd.buffer.registers[i++].value = (u8) 0x81; /* = 8/1 = 8 (HIBYTE/LOBYTE) */
+
+ cmd.reg_count = i;
+
+ cpia2_send_command(cam, &cmd);
+
+ return i;
+}
+
+
+/******************************************************************************
+ *
+ * config_sensor_500(cam)
+ *
+ *****************************************************************************/
+static int config_sensor_500(struct camera_data *cam,
+ int req_width, int req_height)
+{
+ struct cpia2_command cmd;
+ int i = 0;
+ int image_size = VIDEOSIZE_CIF;
+ int image_type = VIDEOSIZE_VGA;
+ int width = req_width;
+ int height = req_height;
+ unsigned int device = cam->params.pnp_id.device_type;
+
+ image_size = cpia2_match_video_size(width, height);
+
+ if (width > STV_IMAGE_CIF_COLS || height > STV_IMAGE_CIF_ROWS)
+ image_type = VIDEOSIZE_VGA;
+ else if (width > STV_IMAGE_QVGA_COLS || height > STV_IMAGE_QVGA_ROWS)
+ image_type = VIDEOSIZE_CIF;
+ else if (width > STV_IMAGE_QCIF_COLS || height > STV_IMAGE_QCIF_ROWS)
+ image_type = VIDEOSIZE_QVGA;
+ else
+ image_type = VIDEOSIZE_QCIF;
+
+ if (image_size >= 0) {
+ set_vw_size(cam, image_size);
+ width = cam->params.roi.width;
+ height = cam->params.roi.height;
+ } else {
+ ERR("ConfigSensor500 failed\n");
+ return -EINVAL;
+ }
+
+ DBG("image_size = %d, width = %d, height = %d, type = %d\n",
+ image_size, width, height, image_type);
+
+ cmd.req_mode = CAMERAACCESS_TYPE_RANDOM | CAMERAACCESS_VC;
+ cmd.direction = TRANSFER_WRITE;
+ i = 0;
+
+ /* VC Format */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_FORMAT;
+ cmd.buffer.registers[i].value = (u8) CPIA2_VC_VC_FORMAT_UFIRST;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i].value |= (u8) CPIA2_VC_VC_FORMAT_DECIMATING;
+ i++;
+
+ /* VC Clocks */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_CLOCKS;
+ if (device == DEVICE_STV_672) {
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i].value =
+ (u8)CPIA2_VC_VC_CLOCKS_LOGDIV1;
+ else
+ cmd.buffer.registers[i].value =
+ (u8)(CPIA2_VC_VC_672_CLOCKS_SCALING |
+ CPIA2_VC_VC_CLOCKS_LOGDIV3);
+ } else {
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i].value =
+ (u8)CPIA2_VC_VC_CLOCKS_LOGDIV0;
+ else
+ cmd.buffer.registers[i].value =
+ (u8)(CPIA2_VC_VC_676_CLOCKS_SCALING |
+ CPIA2_VC_VC_CLOCKS_LOGDIV2);
+ }
+ i++;
+
+ DBG("VC_CLOCKS = 0x%X\n", cmd.buffer.registers[i-1].value);
+
+ /* Input width from VP */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_IHSIZE_LO;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i].value =
+ (u8) (STV_IMAGE_VGA_COLS / 4);
+ else
+ cmd.buffer.registers[i].value =
+ (u8) (STV_IMAGE_QVGA_COLS / 4);
+ i++;
+ DBG("Input width = %d\n", cmd.buffer.registers[i-1].value);
+
+ /* Timings */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_HI;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value = (u8) 2;
+ else
+ cmd.buffer.registers[i++].value = (u8) 1;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_XLIM_LO;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value = (u8) 250;
+ else if (image_type == VIDEOSIZE_QVGA)
+ cmd.buffer.registers[i++].value = (u8) 125;
+ else
+ cmd.buffer.registers[i++].value = (u8) 160;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_HI;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value = (u8) 2;
+ else
+ cmd.buffer.registers[i++].value = (u8) 1;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_YLIM_LO;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value = (u8) 12;
+ else if (image_type == VIDEOSIZE_QVGA)
+ cmd.buffer.registers[i++].value = (u8) 64;
+ else
+ cmd.buffer.registers[i++].value = (u8) 6;
+
+ /* Output Image Size */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_OHSIZE;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = STV_IMAGE_CIF_COLS / 4;
+ else
+ cmd.buffer.registers[i++].value = width / 4;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_OVSIZE;
+ if (image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = STV_IMAGE_CIF_ROWS / 4;
+ else
+ cmd.buffer.registers[i++].value = height / 4;
+
+ /* Cropping */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HCROP;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_VGA_COLS / 4) - (width / 4)) / 2);
+ else if (image_type == VIDEOSIZE_QVGA)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QVGA_COLS / 4) - (width / 4)) / 2);
+ else if (image_type == VIDEOSIZE_CIF)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_CIF_COLS / 4) - (width / 4)) / 2);
+ else /*if (image_type == VIDEOSIZE_QCIF)*/
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QCIF_COLS / 4) - (width / 4)) / 2);
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VCROP;
+ if (image_type == VIDEOSIZE_VGA)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_VGA_ROWS / 4) - (height / 4)) / 2);
+ else if (image_type == VIDEOSIZE_QVGA)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QVGA_ROWS / 4) - (height / 4)) / 2);
+ else if (image_type == VIDEOSIZE_CIF)
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_CIF_ROWS / 4) - (height / 4)) / 2);
+ else /*if (image_type == VIDEOSIZE_QCIF)*/
+ cmd.buffer.registers[i++].value =
+ (u8) (((STV_IMAGE_QCIF_ROWS / 4) - (height / 4)) / 2);
+
+ /* Scaling registers (defaults) */
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HPHASE;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 36;
+ else
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VPHASE;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 32;
+ else
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HISPAN;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 26;
+ else
+ cmd.buffer.registers[i++].value = (u8) 31;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VISPAN;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 21;
+ else
+ cmd.buffer.registers[i++].value = (u8) 31;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HICROP;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VICROP;
+ cmd.buffer.registers[i++].value = (u8) 0;
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_HFRACT;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 0x2B; /* 2/11 */
+ else
+ cmd.buffer.registers[i++].value = (u8) 0x81; /* 8/1 */
+
+ cmd.buffer.registers[i].index = CPIA2_VC_VC_VFRACT;
+ if (image_type == VIDEOSIZE_CIF || image_type == VIDEOSIZE_QCIF)
+ cmd.buffer.registers[i++].value = (u8) 0x13; /* 1/3 */
+ else
+ cmd.buffer.registers[i++].value = (u8) 0x81; /* 8/1 */
+
+ cmd.reg_count = i;
+
+ cpia2_send_command(cam, &cmd);
+
+ return i;
+}
+
+
+/******************************************************************************
+ *
+ * setallproperties
+ *
+ * This sets all user changeable properties to the values in cam->params.
+ *****************************************************************************/
+static int set_all_properties(struct camera_data *cam)
+{
+ /**
+ * Don't set target_kb here, it will be set later.
+ * framerate and user_mode were already set (set_default_user_mode).
+ **/
+
+ cpia2_usb_change_streaming_alternate(cam,
+ cam->params.camera_state.stream_mode);
+
+ cpia2_do_command(cam,
+ CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
+ TRANSFER_WRITE, cam->params.vp_params.gpio_direction);
+ cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DATA, TRANSFER_WRITE,
+ cam->params.vp_params.gpio_data);
+
+ v4l2_ctrl_handler_setup(&cam->hdl);
+
+ wake_system(cam);
+
+ set_lowlight_boost(cam);
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_save_camera_state
+ *
+ *****************************************************************************/
+void cpia2_save_camera_state(struct camera_data *cam)
+{
+ cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_VC_MP_GPIO_DIRECTION, TRANSFER_READ,
+ 0);
+ cpia2_do_command(cam, CPIA2_CMD_GET_VC_MP_GPIO_DATA, TRANSFER_READ, 0);
+ /* Don't get framerate or target_kb. Trust the values we already have */
+}
+
+
+/******************************************************************************
+ *
+ * cpia2_set_flicker_mode
+ *
+ *****************************************************************************/
+int cpia2_set_flicker_mode(struct camera_data *cam, int mode)
+{
+ unsigned char cam_reg;
+ int err = 0;
+
+ if(cam->params.pnp_id.device_type != DEVICE_STV_672)
+ return -EINVAL;
+
+ /* Set the appropriate bits in FLICKER_MODES, preserving the rest */
+ if((err = cpia2_do_command(cam, CPIA2_CMD_GET_FLICKER_MODES,
+ TRANSFER_READ, 0)))
+ return err;
+ cam_reg = cam->params.flicker_control.cam_register;
+
+ switch(mode) {
+ case NEVER_FLICKER:
+ cam_reg |= CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
+ cam_reg &= ~CPIA2_VP_FLICKER_MODES_50HZ;
+ break;
+ case FLICKER_60:
+ cam_reg &= ~CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
+ cam_reg &= ~CPIA2_VP_FLICKER_MODES_50HZ;
+ break;
+ case FLICKER_50:
+ cam_reg &= ~CPIA2_VP_FLICKER_MODES_NEVER_FLICKER;
+ cam_reg |= CPIA2_VP_FLICKER_MODES_50HZ;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if((err = cpia2_do_command(cam, CPIA2_CMD_SET_FLICKER_MODES,
+ TRANSFER_WRITE, cam_reg)))
+ return err;
+
+ /* Set the appropriate bits in EXP_MODES, preserving the rest */
+ if((err = cpia2_do_command(cam, CPIA2_CMD_GET_VP_EXP_MODES,
+ TRANSFER_READ, 0)))
+ return err;
+ cam_reg = cam->params.vp_params.exposure_modes;
+
+ if (mode == NEVER_FLICKER) {
+ cam_reg |= CPIA2_VP_EXPOSURE_MODES_INHIBIT_FLICKER;
+ } else {
+ cam_reg &= ~CPIA2_VP_EXPOSURE_MODES_INHIBIT_FLICKER;
+ }
+
+ if((err = cpia2_do_command(cam, CPIA2_CMD_SET_VP_EXP_MODES,
+ TRANSFER_WRITE, cam_reg)))
+ return err;
+
+ if((err = cpia2_do_command(cam, CPIA2_CMD_REHASH_VP4,
+ TRANSFER_WRITE, 1)))
+ return err;
+
+ switch(mode) {
+ case NEVER_FLICKER:
+ case FLICKER_60:
+ case FLICKER_50:
+ cam->params.flicker_control.flicker_mode_req = mode;
+ break;
+ default:
+ err = -EINVAL;
+ }
+
+ return err;
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_property_flip
+ *
+ *****************************************************************************/
+void cpia2_set_property_flip(struct camera_data *cam, int prop_val)
+{
+ unsigned char cam_reg;
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
+ cam_reg = cam->params.vp_params.user_effects;
+
+ if (prop_val)
+ {
+ cam_reg |= CPIA2_VP_USER_EFFECTS_FLIP;
+ }
+ else
+ {
+ cam_reg &= ~CPIA2_VP_USER_EFFECTS_FLIP;
+ }
+ cam->params.vp_params.user_effects = cam_reg;
+ cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE,
+ cam_reg);
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_property_mirror
+ *
+ *****************************************************************************/
+void cpia2_set_property_mirror(struct camera_data *cam, int prop_val)
+{
+ unsigned char cam_reg;
+
+ cpia2_do_command(cam, CPIA2_CMD_GET_USER_EFFECTS, TRANSFER_READ, 0);
+ cam_reg = cam->params.vp_params.user_effects;
+
+ if (prop_val)
+ {
+ cam_reg |= CPIA2_VP_USER_EFFECTS_MIRROR;
+ }
+ else
+ {
+ cam_reg &= ~CPIA2_VP_USER_EFFECTS_MIRROR;
+ }
+ cam->params.vp_params.user_effects = cam_reg;
+ cpia2_do_command(cam, CPIA2_CMD_SET_USER_EFFECTS, TRANSFER_WRITE,
+ cam_reg);
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_gpio
+ *
+ *****************************************************************************/
+int cpia2_set_gpio(struct camera_data *cam, unsigned char setting)
+{
+ int ret;
+
+ /* Set the microport direction (register 0x90, should be defined
+ * already) to 1 (user output), and set the microport data (0x91) to
+ * the value in the ioctl argument.
+ */
+
+ ret = cpia2_do_command(cam,
+ CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
+ CPIA2_VC_MP_DIR_OUTPUT,
+ 255);
+ if (ret < 0)
+ return ret;
+ cam->params.vp_params.gpio_direction = 255;
+
+ ret = cpia2_do_command(cam,
+ CPIA2_CMD_SET_VC_MP_GPIO_DATA,
+ CPIA2_VC_MP_DIR_OUTPUT,
+ setting);
+ if (ret < 0)
+ return ret;
+ cam->params.vp_params.gpio_data = setting;
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_fps
+ *
+ *****************************************************************************/
+int cpia2_set_fps(struct camera_data *cam, int framerate)
+{
+ int retval;
+
+ switch(framerate) {
+ case CPIA2_VP_FRAMERATE_30:
+ case CPIA2_VP_FRAMERATE_25:
+ if(cam->params.pnp_id.device_type == DEVICE_STV_672 &&
+ cam->params.version.sensor_flags ==
+ CPIA2_VP_SENSOR_FLAGS_500) {
+ return -EINVAL;
+ }
+ /* Fall through */
+ case CPIA2_VP_FRAMERATE_15:
+ case CPIA2_VP_FRAMERATE_12_5:
+ case CPIA2_VP_FRAMERATE_7_5:
+ case CPIA2_VP_FRAMERATE_6_25:
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672 &&
+ framerate == CPIA2_VP_FRAMERATE_15)
+ framerate = 0; /* Work around bug in VP4 */
+
+ retval = cpia2_do_command(cam,
+ CPIA2_CMD_FRAMERATE_REQ,
+ TRANSFER_WRITE,
+ framerate);
+
+ if(retval == 0)
+ cam->params.vp_params.frame_rate = framerate;
+
+ return retval;
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_brightness
+ *
+ *****************************************************************************/
+void cpia2_set_brightness(struct camera_data *cam, unsigned char value)
+{
+ /***
+ * Don't let the register be set to zero - bug in VP4 - flash of full
+ * brightness
+ ***/
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672 && value == 0)
+ value++;
+ DBG("Setting brightness to %d (0x%0x)\n", value, value);
+ cpia2_do_command(cam, CPIA2_CMD_SET_VP_BRIGHTNESS, TRANSFER_WRITE, value);
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_contrast
+ *
+ *****************************************************************************/
+void cpia2_set_contrast(struct camera_data *cam, unsigned char value)
+{
+ DBG("Setting contrast to %d (0x%0x)\n", value, value);
+ cpia2_do_command(cam, CPIA2_CMD_SET_CONTRAST, TRANSFER_WRITE, value);
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_saturation
+ *
+ *****************************************************************************/
+void cpia2_set_saturation(struct camera_data *cam, unsigned char value)
+{
+ DBG("Setting saturation to %d (0x%0x)\n", value, value);
+ cpia2_do_command(cam,CPIA2_CMD_SET_VP_SATURATION, TRANSFER_WRITE,value);
+}
+
+/******************************************************************************
+ *
+ * wake_system
+ *
+ *****************************************************************************/
+static void wake_system(struct camera_data *cam)
+{
+ cpia2_do_command(cam, CPIA2_CMD_SET_WAKEUP, TRANSFER_WRITE, 0);
+}
+
+/******************************************************************************
+ *
+ * set_lowlight_boost
+ *
+ * Valid for STV500 sensor only
+ *****************************************************************************/
+static void set_lowlight_boost(struct camera_data *cam)
+{
+ struct cpia2_command cmd;
+
+ if (cam->params.pnp_id.device_type != DEVICE_STV_672 ||
+ cam->params.version.sensor_flags != CPIA2_VP_SENSOR_FLAGS_500)
+ return;
+
+ cmd.direction = TRANSFER_WRITE;
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 3;
+ cmd.start = CPIA2_VP_RAM_ADDR_H;
+
+ cmd.buffer.block_data[0] = 0; /* High byte of address to write to */
+ cmd.buffer.block_data[1] = 0x59; /* Low byte of address to write to */
+ cmd.buffer.block_data[2] = 0; /* High byte of data to write */
+
+ cpia2_send_command(cam, &cmd);
+
+ if (cam->params.vp_params.lowlight_boost) {
+ cmd.buffer.block_data[0] = 0x02; /* Low byte data to write */
+ } else {
+ cmd.buffer.block_data[0] = 0x06;
+ }
+ cmd.start = CPIA2_VP_RAM_DATA;
+ cmd.reg_count = 1;
+ cpia2_send_command(cam, &cmd);
+
+ /* Rehash the VP4 values */
+ cpia2_do_command(cam, CPIA2_CMD_REHASH_VP4, TRANSFER_WRITE, 1);
+}
+
+/******************************************************************************
+ *
+ * cpia2_set_format
+ *
+ * Assumes that new size is already set in param struct.
+ *****************************************************************************/
+void cpia2_set_format(struct camera_data *cam)
+{
+ cam->flush = true;
+
+ cpia2_usb_stream_pause(cam);
+
+ /* reset camera to new size */
+ cpia2_set_low_power(cam);
+ cpia2_reset_camera(cam);
+ cam->flush = false;
+
+ cpia2_dbg_dump_registers(cam);
+
+ cpia2_usb_stream_resume(cam);
+}
+
+/******************************************************************************
+ *
+ * cpia2_dbg_dump_registers
+ *
+ *****************************************************************************/
+void cpia2_dbg_dump_registers(struct camera_data *cam)
+{
+#ifdef _CPIA2_DEBUG_
+ struct cpia2_command cmd;
+
+ if (!(debugs_on & DEBUG_DUMP_REGS))
+ return;
+
+ cmd.direction = TRANSFER_READ;
+
+ /* Start with bank 0 (SYSTEM) */
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_SYSTEM;
+ cmd.reg_count = 3;
+ cmd.start = 0;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "System Device Hi = 0x%X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "System Device Lo = 0x%X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "System_system control = 0x%X\n",
+ cmd.buffer.block_data[2]);
+
+ /* Bank 1 (VC) */
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VC;
+ cmd.reg_count = 4;
+ cmd.start = 0x80;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "ASIC_ID = 0x%X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "ASIC_REV = 0x%X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "PW_CONTRL = 0x%X\n",
+ cmd.buffer.block_data[2]);
+ printk(KERN_DEBUG "WAKEUP = 0x%X\n",
+ cmd.buffer.block_data[3]);
+
+ cmd.start = 0xA0; /* ST_CTRL */
+ cmd.reg_count = 1;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "Stream ctrl = 0x%X\n",
+ cmd.buffer.block_data[0]);
+
+ cmd.start = 0xA4; /* Stream status */
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "Stream status = 0x%X\n",
+ cmd.buffer.block_data[0]);
+
+ cmd.start = 0xA8; /* USB status */
+ cmd.reg_count = 3;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "USB_CTRL = 0x%X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "USB_STRM = 0x%X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "USB_STATUS = 0x%X\n",
+ cmd.buffer.block_data[2]);
+
+ cmd.start = 0xAF; /* USB settings */
+ cmd.reg_count = 1;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "USB settings = 0x%X\n",
+ cmd.buffer.block_data[0]);
+
+ cmd.start = 0xC0; /* VC stuff */
+ cmd.reg_count = 26;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VC Control = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "VC Format = 0x%0X\n",
+ cmd.buffer.block_data[3]);
+ printk(KERN_DEBUG "VC Clocks = 0x%0X\n",
+ cmd.buffer.block_data[4]);
+ printk(KERN_DEBUG "VC IHSize = 0x%0X\n",
+ cmd.buffer.block_data[5]);
+ printk(KERN_DEBUG "VC Xlim Hi = 0x%0X\n",
+ cmd.buffer.block_data[6]);
+ printk(KERN_DEBUG "VC XLim Lo = 0x%0X\n",
+ cmd.buffer.block_data[7]);
+ printk(KERN_DEBUG "VC YLim Hi = 0x%0X\n",
+ cmd.buffer.block_data[8]);
+ printk(KERN_DEBUG "VC YLim Lo = 0x%0X\n",
+ cmd.buffer.block_data[9]);
+ printk(KERN_DEBUG "VC OHSize = 0x%0X\n",
+ cmd.buffer.block_data[10]);
+ printk(KERN_DEBUG "VC OVSize = 0x%0X\n",
+ cmd.buffer.block_data[11]);
+ printk(KERN_DEBUG "VC HCrop = 0x%0X\n",
+ cmd.buffer.block_data[12]);
+ printk(KERN_DEBUG "VC VCrop = 0x%0X\n",
+ cmd.buffer.block_data[13]);
+ printk(KERN_DEBUG "VC HPhase = 0x%0X\n",
+ cmd.buffer.block_data[14]);
+ printk(KERN_DEBUG "VC VPhase = 0x%0X\n",
+ cmd.buffer.block_data[15]);
+ printk(KERN_DEBUG "VC HIspan = 0x%0X\n",
+ cmd.buffer.block_data[16]);
+ printk(KERN_DEBUG "VC VIspan = 0x%0X\n",
+ cmd.buffer.block_data[17]);
+ printk(KERN_DEBUG "VC HiCrop = 0x%0X\n",
+ cmd.buffer.block_data[18]);
+ printk(KERN_DEBUG "VC ViCrop = 0x%0X\n",
+ cmd.buffer.block_data[19]);
+ printk(KERN_DEBUG "VC HiFract = 0x%0X\n",
+ cmd.buffer.block_data[20]);
+ printk(KERN_DEBUG "VC ViFract = 0x%0X\n",
+ cmd.buffer.block_data[21]);
+ printk(KERN_DEBUG "VC JPeg Opt = 0x%0X\n",
+ cmd.buffer.block_data[22]);
+ printk(KERN_DEBUG "VC Creep Per = 0x%0X\n",
+ cmd.buffer.block_data[23]);
+ printk(KERN_DEBUG "VC User Sq. = 0x%0X\n",
+ cmd.buffer.block_data[24]);
+ printk(KERN_DEBUG "VC Target KB = 0x%0X\n",
+ cmd.buffer.block_data[25]);
+
+ /*** VP ***/
+ cmd.req_mode = CAMERAACCESS_TYPE_BLOCK | CAMERAACCESS_VP;
+ cmd.reg_count = 14;
+ cmd.start = 0;
+ cpia2_send_command(cam, &cmd);
+
+ printk(KERN_DEBUG "VP Dev Hi = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "VP Dev Lo = 0x%0X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "VP Sys State = 0x%0X\n",
+ cmd.buffer.block_data[2]);
+ printk(KERN_DEBUG "VP Sys Ctrl = 0x%0X\n",
+ cmd.buffer.block_data[3]);
+ printk(KERN_DEBUG "VP Sensor flg = 0x%0X\n",
+ cmd.buffer.block_data[5]);
+ printk(KERN_DEBUG "VP Sensor Rev = 0x%0X\n",
+ cmd.buffer.block_data[6]);
+ printk(KERN_DEBUG "VP Dev Config = 0x%0X\n",
+ cmd.buffer.block_data[7]);
+ printk(KERN_DEBUG "VP GPIO_DIR = 0x%0X\n",
+ cmd.buffer.block_data[8]);
+ printk(KERN_DEBUG "VP GPIO_DATA = 0x%0X\n",
+ cmd.buffer.block_data[9]);
+ printk(KERN_DEBUG "VP Ram ADDR H = 0x%0X\n",
+ cmd.buffer.block_data[10]);
+ printk(KERN_DEBUG "VP Ram ADDR L = 0x%0X\n",
+ cmd.buffer.block_data[11]);
+ printk(KERN_DEBUG "VP RAM Data = 0x%0X\n",
+ cmd.buffer.block_data[12]);
+ printk(KERN_DEBUG "Do Call = 0x%0X\n",
+ cmd.buffer.block_data[13]);
+
+ if (cam->params.pnp_id.device_type == DEVICE_STV_672) {
+ cmd.reg_count = 9;
+ cmd.start = 0x0E;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VP Clock Ctrl = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "VP Patch Rev = 0x%0X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "VP Vid Mode = 0x%0X\n",
+ cmd.buffer.block_data[2]);
+ printk(KERN_DEBUG "VP Framerate = 0x%0X\n",
+ cmd.buffer.block_data[3]);
+ printk(KERN_DEBUG "VP UserEffect = 0x%0X\n",
+ cmd.buffer.block_data[4]);
+ printk(KERN_DEBUG "VP White Bal = 0x%0X\n",
+ cmd.buffer.block_data[5]);
+ printk(KERN_DEBUG "VP WB thresh = 0x%0X\n",
+ cmd.buffer.block_data[6]);
+ printk(KERN_DEBUG "VP Exp Modes = 0x%0X\n",
+ cmd.buffer.block_data[7]);
+ printk(KERN_DEBUG "VP Exp Target = 0x%0X\n",
+ cmd.buffer.block_data[8]);
+
+ cmd.reg_count = 1;
+ cmd.start = 0x1B;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VP FlickerMds = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ } else {
+ cmd.reg_count = 8 ;
+ cmd.start = 0x0E;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VP Clock Ctrl = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "VP Patch Rev = 0x%0X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "VP Vid Mode = 0x%0X\n",
+ cmd.buffer.block_data[5]);
+ printk(KERN_DEBUG "VP Framerate = 0x%0X\n",
+ cmd.buffer.block_data[6]);
+ printk(KERN_DEBUG "VP UserEffect = 0x%0X\n",
+ cmd.buffer.block_data[7]);
+
+ cmd.reg_count = 1;
+ cmd.start = CPIA2_VP5_EXPOSURE_TARGET;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VP5 Exp Target= 0x%0X\n",
+ cmd.buffer.block_data[0]);
+
+ cmd.reg_count = 4;
+ cmd.start = 0x3A;
+ cpia2_send_command(cam, &cmd);
+ printk(KERN_DEBUG "VP5 MY Black = 0x%0X\n",
+ cmd.buffer.block_data[0]);
+ printk(KERN_DEBUG "VP5 MCY Range = 0x%0X\n",
+ cmd.buffer.block_data[1]);
+ printk(KERN_DEBUG "VP5 MYCEILING = 0x%0X\n",
+ cmd.buffer.block_data[2]);
+ printk(KERN_DEBUG "VP5 MCUV Sat = 0x%0X\n",
+ cmd.buffer.block_data[3]);
+ }
+#endif
+}
+
+/******************************************************************************
+ *
+ * reset_camera_struct
+ *
+ * Sets all values to the defaults
+ *****************************************************************************/
+static void reset_camera_struct(struct camera_data *cam)
+{
+ /***
+ * The following parameter values are the defaults from the register map.
+ ***/
+ cam->params.vp_params.lowlight_boost = 0;
+
+ /* FlickerModes */
+ cam->params.flicker_control.flicker_mode_req = NEVER_FLICKER;
+
+ /* jpeg params */
+ cam->params.compression.jpeg_options = CPIA2_VC_VC_JPEG_OPT_DEFAULT;
+ cam->params.compression.creep_period = 2;
+ cam->params.compression.user_squeeze = 20;
+ cam->params.compression.inhibit_htables = false;
+
+ /* gpio params */
+ cam->params.vp_params.gpio_direction = 0; /* write, the default safe mode */
+ cam->params.vp_params.gpio_data = 0;
+
+ /* Target kb params */
+ cam->params.vc_params.quality = 100;
+
+ /***
+ * Set Sensor FPS as fast as possible.
+ ***/
+ if(cam->params.pnp_id.device_type == DEVICE_STV_672) {
+ if(cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500)
+ cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_15;
+ else
+ cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_30;
+ } else {
+ cam->params.vp_params.frame_rate = CPIA2_VP_FRAMERATE_30;
+ }
+
+ /***
+ * Set default video mode as large as possible :
+ * for vga sensor set to vga, for cif sensor set to CIF.
+ ***/
+ if (cam->params.version.sensor_flags == CPIA2_VP_SENSOR_FLAGS_500) {
+ cam->sensor_type = CPIA2_SENSOR_500;
+ cam->video_size = VIDEOSIZE_VGA;
+ cam->params.roi.width = STV_IMAGE_VGA_COLS;
+ cam->params.roi.height = STV_IMAGE_VGA_ROWS;
+ } else {
+ cam->sensor_type = CPIA2_SENSOR_410;
+ cam->video_size = VIDEOSIZE_CIF;
+ cam->params.roi.width = STV_IMAGE_CIF_COLS;
+ cam->params.roi.height = STV_IMAGE_CIF_ROWS;
+ }
+
+ cam->width = cam->params.roi.width;
+ cam->height = cam->params.roi.height;
+}
+
+/******************************************************************************
+ *
+ * cpia2_init_camera_struct
+ *
+ * Initializes camera struct, does not call reset to fill in defaults.
+ *****************************************************************************/
+struct camera_data *cpia2_init_camera_struct(struct usb_interface *intf)
+{
+ struct camera_data *cam;
+
+ cam = kzalloc(sizeof(*cam), GFP_KERNEL);
+
+ if (!cam) {
+ ERR("couldn't kmalloc cpia2 struct\n");
+ return NULL;
+ }
+
+ cam->v4l2_dev.release = cpia2_camera_release;
+ if (v4l2_device_register(&intf->dev, &cam->v4l2_dev) < 0) {
+ v4l2_err(&cam->v4l2_dev, "couldn't register v4l2_device\n");
+ kfree(cam);
+ return NULL;
+ }
+
+ mutex_init(&cam->v4l2_lock);
+ init_waitqueue_head(&cam->wq_stream);
+
+ return cam;
+}
+
+/******************************************************************************
+ *
+ * cpia2_init_camera
+ *
+ * Initializes camera.
+ *****************************************************************************/
+int cpia2_init_camera(struct camera_data *cam)
+{
+ DBG("Start\n");
+
+ cam->mmapped = false;
+
+ /* Get sensor and asic types before reset. */
+ cpia2_set_high_power(cam);
+ cpia2_get_version_info(cam);
+ if (cam->params.version.asic_id != CPIA2_ASIC_672) {
+ ERR("Device IO error (asicID has incorrect value of 0x%X\n",
+ cam->params.version.asic_id);
+ return -ENODEV;
+ }
+
+ /* Set GPIO direction and data to a safe state. */
+ cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DIRECTION,
+ TRANSFER_WRITE, 0);
+ cpia2_do_command(cam, CPIA2_CMD_SET_VC_MP_GPIO_DATA,
+ TRANSFER_WRITE, 0);
+
+ /* resetting struct requires version info for sensor and asic types */
+ reset_camera_struct(cam);
+
+ cpia2_set_low_power(cam);
+
+ DBG("End\n");
+
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_allocate_buffers
+ *
+ *****************************************************************************/
+int cpia2_allocate_buffers(struct camera_data *cam)
+{
+ int i;
+
+ if(!cam->buffers) {
+ u32 size = cam->num_frames*sizeof(struct framebuf);
+ cam->buffers = kmalloc(size, GFP_KERNEL);
+ if(!cam->buffers) {
+ ERR("couldn't kmalloc frame buffer structures\n");
+ return -ENOMEM;
+ }
+ }
+
+ if(!cam->frame_buffer) {
+ cam->frame_buffer = rvmalloc(cam->frame_size*cam->num_frames);
+ if (!cam->frame_buffer) {
+ ERR("couldn't vmalloc frame buffer data area\n");
+ kfree(cam->buffers);
+ cam->buffers = NULL;
+ return -ENOMEM;
+ }
+ }
+
+ for(i=0; i<cam->num_frames-1; ++i) {
+ cam->buffers[i].next = &cam->buffers[i+1];
+ cam->buffers[i].data = cam->frame_buffer +i*cam->frame_size;
+ cam->buffers[i].status = FRAME_EMPTY;
+ cam->buffers[i].length = 0;
+ cam->buffers[i].max_length = 0;
+ cam->buffers[i].num = i;
+ }
+ cam->buffers[i].next = cam->buffers;
+ cam->buffers[i].data = cam->frame_buffer +i*cam->frame_size;
+ cam->buffers[i].status = FRAME_EMPTY;
+ cam->buffers[i].length = 0;
+ cam->buffers[i].max_length = 0;
+ cam->buffers[i].num = i;
+ cam->curbuff = cam->buffers;
+ cam->workbuff = cam->curbuff->next;
+ DBG("buffers=%p, curbuff=%p, workbuff=%p\n", cam->buffers, cam->curbuff,
+ cam->workbuff);
+ return 0;
+}
+
+/******************************************************************************
+ *
+ * cpia2_free_buffers
+ *
+ *****************************************************************************/
+void cpia2_free_buffers(struct camera_data *cam)
+{
+ if(cam->buffers) {
+ kfree(cam->buffers);
+ cam->buffers = NULL;
+ }
+ if(cam->frame_buffer) {
+ rvfree(cam->frame_buffer, cam->frame_size*cam->num_frames);
+ cam->frame_buffer = NULL;
+ }
+}
+
+/******************************************************************************
+ *
+ * cpia2_read
+ *
+ *****************************************************************************/
+long cpia2_read(struct camera_data *cam,
+ char __user *buf, unsigned long count, int noblock)
+{
+ struct framebuf *frame;
+
+ if (!count)
+ return 0;
+
+ if (!buf) {
+ ERR("%s: buffer NULL\n",__func__);
+ return -EINVAL;
+ }
+
+ if (!cam) {
+ ERR("%s: Internal error, camera_data NULL!\n",__func__);
+ return -EINVAL;
+ }
+
+ if (!cam->streaming) {
+ /* Start streaming */
+ cpia2_usb_stream_start(cam,
+ cam->params.camera_state.stream_mode);
+ }
+
+ /* Copy cam->curbuff in case it changes while we're processing */
+ frame = cam->curbuff;
+ if (noblock && frame->status != FRAME_READY) {
+ return -EAGAIN;
+ }
+
+ if (frame->status != FRAME_READY) {
+ mutex_unlock(&cam->v4l2_lock);
+ wait_event_interruptible(cam->wq_stream,
+ !video_is_registered(&cam->vdev) ||
+ (frame = cam->curbuff)->status == FRAME_READY);
+ mutex_lock(&cam->v4l2_lock);
+ if (signal_pending(current))
+ return -ERESTARTSYS;
+ if (!video_is_registered(&cam->vdev))
+ return 0;
+ }
+
+ /* copy data to user space */
+ if (frame->length > count)
+ return -EFAULT;
+ if (copy_to_user(buf, frame->data, frame->length))
+ return -EFAULT;
+
+ count = frame->length;
+
+ frame->status = FRAME_EMPTY;
+
+ return count;
+}
+
+/******************************************************************************
+ *
+ * cpia2_poll
+ *
+ *****************************************************************************/
+unsigned int cpia2_poll(struct camera_data *cam, struct file *filp,
+ poll_table *wait)
+{
+ unsigned int status = v4l2_ctrl_poll(filp, wait);
+
+ if ((poll_requested_events(wait) & (POLLIN | POLLRDNORM)) &&
+ !cam->streaming) {
+ /* Start streaming */
+ cpia2_usb_stream_start(cam,
+ cam->params.camera_state.stream_mode);
+ }
+
+ poll_wait(filp, &cam->wq_stream, wait);
+
+ if (cam->curbuff->status == FRAME_READY)
+ status |= POLLIN | POLLRDNORM;
+
+ return status;
+}
+
+/******************************************************************************
+ *
+ * cpia2_remap_buffer
+ *
+ *****************************************************************************/
+int cpia2_remap_buffer(struct camera_data *cam, struct vm_area_struct *vma)
+{
+ const char *adr = (const char *)vma->vm_start;
+ unsigned long size = vma->vm_end-vma->vm_start;
+ unsigned long start_offset = vma->vm_pgoff << PAGE_SHIFT;
+ unsigned long start = (unsigned long) adr;
+ unsigned long page, pos;
+
+ DBG("mmap offset:%ld size:%ld\n", start_offset, size);
+
+ if (!video_is_registered(&cam->vdev))
+ return -ENODEV;
+
+ if (size > cam->frame_size*cam->num_frames ||
+ (start_offset % cam->frame_size) != 0 ||
+ (start_offset+size > cam->frame_size*cam->num_frames))
+ return -EINVAL;
+
+ pos = ((unsigned long) (cam->frame_buffer)) + start_offset;
+ while (size > 0) {
+ page = kvirt_to_pa(pos);
+ if (remap_pfn_range(vma, start, page >> PAGE_SHIFT, PAGE_SIZE, PAGE_SHARED))
+ return -EAGAIN;
+ start += PAGE_SIZE;
+ pos += PAGE_SIZE;
+ if (size > PAGE_SIZE)
+ size -= PAGE_SIZE;
+ else
+ size = 0;
+ }
+
+ cam->mmapped = true;
+ return 0;
+}
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