[media] omap3isp: CCP2/CSI2 receivers
The OMAP3 ISP CCP2 and CSI2 receivers provide an interface to connect
serial MIPI sensors to the device.
Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@iki.fi>
Signed-off-by: David Cohen <dacohen@gmail.com>
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
Signed-off-by: Vimarsh Zutshi <vimarsh.zutshi@gmail.com>
Signed-off-by: Tuukka Toivonen <tuukkat76@gmail.com>
Signed-off-by: Sergio Aguirre <saaguirre@ti.com>
Signed-off-by: Antti Koskipaa <akoskipa@gmail.com>
Signed-off-by: Ivan T. Ivanov <iivanov@mm-sol.com>
Signed-off-by: RaniSuneela <r-m@ti.com>
Signed-off-by: Atanas Filipov <afilipov@mm-sol.com>
Signed-off-by: Gjorgji Rosikopulos <grosikopulos@mm-sol.com>
Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com>
Signed-off-by: Nayden Kanchev <nkanchev@mm-sol.com>
Signed-off-by: Phil Carmody <ext-phil.2.carmody@nokia.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Signed-off-by: Dominic Curran <dcurran@ti.com>
Signed-off-by: Ilkka Myllyperkio <ilkka.myllyperkio@sofica.fi>
Signed-off-by: Pallavi Kulkarni <p-kulkarni@ti.com>
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com>
Acked-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
diff --git a/drivers/media/video/omap3isp/ispccp2.c b/drivers/media/video/omap3isp/ispccp2.c
new file mode 100644
index 0000000..0efef2e
--- /dev/null
+++ b/drivers/media/video/omap3isp/ispccp2.c
@@ -0,0 +1,1173 @@
+/*
+ * ispccp2.c
+ *
+ * TI OMAP3 ISP - CCP2 module
+ *
+ * Copyright (C) 2010 Nokia Corporation
+ * Copyright (C) 2010 Texas Instruments, Inc.
+ *
+ * Contacts: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
+ * Sakari Ailus <sakari.ailus@iki.fi>
+ *
+ * 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.
+ *
+ * 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., 51 Franklin St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ */
+
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/mm.h>
+#include <linux/module.h>
+#include <linux/mutex.h>
+#include <linux/uaccess.h>
+
+#include "isp.h"
+#include "ispreg.h"
+#include "ispccp2.h"
+
+/* Number of LCX channels */
+#define CCP2_LCx_CHANS_NUM 3
+/* Max/Min size for CCP2 video port */
+#define ISPCCP2_DAT_START_MIN 0
+#define ISPCCP2_DAT_START_MAX 4095
+#define ISPCCP2_DAT_SIZE_MIN 0
+#define ISPCCP2_DAT_SIZE_MAX 4095
+#define ISPCCP2_VPCLK_FRACDIV 65536
+#define ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP 0x12
+#define ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP 0x16
+/* Max/Min size for CCP2 memory channel */
+#define ISPCCP2_LCM_HSIZE_COUNT_MIN 16
+#define ISPCCP2_LCM_HSIZE_COUNT_MAX 8191
+#define ISPCCP2_LCM_HSIZE_SKIP_MIN 0
+#define ISPCCP2_LCM_HSIZE_SKIP_MAX 8191
+#define ISPCCP2_LCM_VSIZE_MIN 1
+#define ISPCCP2_LCM_VSIZE_MAX 8191
+#define ISPCCP2_LCM_HWORDS_MIN 1
+#define ISPCCP2_LCM_HWORDS_MAX 4095
+#define ISPCCP2_LCM_CTRL_BURST_SIZE_32X 5
+#define ISPCCP2_LCM_CTRL_READ_THROTTLE_FULL 0
+#define ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 2
+#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 2
+#define ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 3
+#define ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 3
+#define ISPCCP2_LCM_CTRL_DST_PORT_VP 0
+#define ISPCCP2_LCM_CTRL_DST_PORT_MEM 1
+
+/* Set only the required bits */
+#define BIT_SET(var, shift, mask, val) \
+ do { \
+ var = ((var) & ~((mask) << (shift))) \
+ | ((val) << (shift)); \
+ } while (0)
+
+/*
+ * ccp2_print_status - Print current CCP2 module register values.
+ */
+#define CCP2_PRINT_REGISTER(isp, name)\
+ dev_dbg(isp->dev, "###CCP2 " #name "=0x%08x\n", \
+ isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_##name))
+
+static void ccp2_print_status(struct isp_ccp2_device *ccp2)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+
+ dev_dbg(isp->dev, "-------------CCP2 Register dump-------------\n");
+
+ CCP2_PRINT_REGISTER(isp, SYSCONFIG);
+ CCP2_PRINT_REGISTER(isp, SYSSTATUS);
+ CCP2_PRINT_REGISTER(isp, LC01_IRQENABLE);
+ CCP2_PRINT_REGISTER(isp, LC01_IRQSTATUS);
+ CCP2_PRINT_REGISTER(isp, LC23_IRQENABLE);
+ CCP2_PRINT_REGISTER(isp, LC23_IRQSTATUS);
+ CCP2_PRINT_REGISTER(isp, LCM_IRQENABLE);
+ CCP2_PRINT_REGISTER(isp, LCM_IRQSTATUS);
+ CCP2_PRINT_REGISTER(isp, CTRL);
+ CCP2_PRINT_REGISTER(isp, LCx_CTRL(0));
+ CCP2_PRINT_REGISTER(isp, LCx_CODE(0));
+ CCP2_PRINT_REGISTER(isp, LCx_STAT_START(0));
+ CCP2_PRINT_REGISTER(isp, LCx_STAT_SIZE(0));
+ CCP2_PRINT_REGISTER(isp, LCx_SOF_ADDR(0));
+ CCP2_PRINT_REGISTER(isp, LCx_EOF_ADDR(0));
+ CCP2_PRINT_REGISTER(isp, LCx_DAT_START(0));
+ CCP2_PRINT_REGISTER(isp, LCx_DAT_SIZE(0));
+ CCP2_PRINT_REGISTER(isp, LCx_DAT_PING_ADDR(0));
+ CCP2_PRINT_REGISTER(isp, LCx_DAT_PONG_ADDR(0));
+ CCP2_PRINT_REGISTER(isp, LCx_DAT_OFST(0));
+ CCP2_PRINT_REGISTER(isp, LCM_CTRL);
+ CCP2_PRINT_REGISTER(isp, LCM_VSIZE);
+ CCP2_PRINT_REGISTER(isp, LCM_HSIZE);
+ CCP2_PRINT_REGISTER(isp, LCM_PREFETCH);
+ CCP2_PRINT_REGISTER(isp, LCM_SRC_ADDR);
+ CCP2_PRINT_REGISTER(isp, LCM_SRC_OFST);
+ CCP2_PRINT_REGISTER(isp, LCM_DST_ADDR);
+ CCP2_PRINT_REGISTER(isp, LCM_DST_OFST);
+
+ dev_dbg(isp->dev, "--------------------------------------------\n");
+}
+
+/*
+ * ccp2_reset - Reset the CCP2
+ * @ccp2: pointer to ISP CCP2 device
+ */
+static void ccp2_reset(struct isp_ccp2_device *ccp2)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ int i = 0;
+
+ /* Reset the CSI1/CCP2B and wait for reset to complete */
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG,
+ ISPCCP2_SYSCONFIG_SOFT_RESET);
+ while (!(isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSSTATUS) &
+ ISPCCP2_SYSSTATUS_RESET_DONE)) {
+ udelay(10);
+ if (i++ > 10) { /* try read 10 times */
+ dev_warn(isp->dev,
+ "omap3_isp: timeout waiting for ccp2 reset\n");
+ break;
+ }
+ }
+}
+
+/*
+ * ccp2_pwr_cfg - Configure the power mode settings
+ * @ccp2: pointer to ISP CCP2 device
+ */
+static void ccp2_pwr_cfg(struct isp_ccp2_device *ccp2)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+
+ isp_reg_writel(isp, ISPCCP2_SYSCONFIG_MSTANDBY_MODE_SMART |
+ ((isp->revision == ISP_REVISION_15_0 && isp->autoidle) ?
+ ISPCCP2_SYSCONFIG_AUTO_IDLE : 0),
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_SYSCONFIG);
+}
+
+/*
+ * ccp2_if_enable - Enable CCP2 interface.
+ * @ccp2: pointer to ISP CCP2 device
+ * @enable: enable/disable flag
+ */
+static void ccp2_if_enable(struct isp_ccp2_device *ccp2, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
+ int i;
+
+ /* Enable/Disable all the LCx channels */
+ for (i = 0; i < CCP2_LCx_CHANS_NUM; i++)
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(i),
+ ISPCCP2_LCx_CTRL_CHAN_EN,
+ enable ? ISPCCP2_LCx_CTRL_CHAN_EN : 0);
+
+ /* Enable/Disable ccp2 interface in ccp2 mode */
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
+ ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN,
+ enable ? (ISPCCP2_CTRL_MODE | ISPCCP2_CTRL_IF_EN) : 0);
+
+ /* For frame count propagation */
+ if (pipe->do_propagation) {
+ /* We may want the Frame Start IRQ from LC0 */
+ if (enable)
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LC01_IRQENABLE,
+ ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ);
+ else
+ isp_reg_clr(isp, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LC01_IRQENABLE,
+ ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ);
+ }
+}
+
+/*
+ * ccp2_mem_enable - Enable CCP2 memory interface.
+ * @ccp2: pointer to ISP CCP2 device
+ * @enable: enable/disable flag
+ */
+static void ccp2_mem_enable(struct isp_ccp2_device *ccp2, u8 enable)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+
+ if (enable)
+ ccp2_if_enable(ccp2, 0);
+
+ /* Enable/Disable ccp2 interface in ccp2 mode */
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
+ ISPCCP2_CTRL_MODE, enable ? ISPCCP2_CTRL_MODE : 0);
+
+ isp_reg_clr_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL,
+ ISPCCP2_LCM_CTRL_CHAN_EN,
+ enable ? ISPCCP2_LCM_CTRL_CHAN_EN : 0);
+}
+
+/*
+ * ccp2_phyif_config - Initialize CCP2 phy interface config
+ * @ccp2: Pointer to ISP CCP2 device
+ * @config: CCP2 platform data
+ *
+ * Configure the CCP2 physical interface module from platform data.
+ *
+ * Returns -EIO if strobe is chosen in CSI1 mode, or 0 on success.
+ */
+static int ccp2_phyif_config(struct isp_ccp2_device *ccp2,
+ const struct isp_ccp2_platform_data *pdata)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ u32 val;
+
+ /* CCP2B mode */
+ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL) |
+ ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE;
+ /* Data/strobe physical layer */
+ BIT_SET(val, ISPCCP2_CTRL_PHY_SEL_SHIFT, ISPCCP2_CTRL_PHY_SEL_MASK,
+ pdata->phy_layer);
+ BIT_SET(val, ISPCCP2_CTRL_INV_SHIFT, ISPCCP2_CTRL_INV_MASK,
+ pdata->strobe_clk_pol);
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
+
+ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
+ if (!(val & ISPCCP2_CTRL_MODE)) {
+ if (pdata->ccp2_mode)
+ dev_warn(isp->dev, "OMAP3 CCP2 bus not available\n");
+ if (pdata->phy_layer == ISPCCP2_CTRL_PHY_SEL_STROBE)
+ /* Strobe mode requires CCP2 */
+ return -EIO;
+ }
+
+ return 0;
+}
+
+/*
+ * ccp2_vp_config - Initialize CCP2 video port interface.
+ * @ccp2: Pointer to ISP CCP2 device
+ * @vpclk_div: Video port divisor
+ *
+ * Configure the CCP2 video port with the given clock divisor. The valid divisor
+ * values depend on the ISP revision:
+ *
+ * - revision 1.0 and 2.0 1 to 4
+ * - revision 15.0 1 to 65536
+ *
+ * The exact divisor value used might differ from the requested value, as ISP
+ * revision 15.0 represent the divisor by 65536 divided by an integer.
+ */
+static void ccp2_vp_config(struct isp_ccp2_device *ccp2,
+ unsigned int vpclk_div)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ u32 val;
+
+ /* ISPCCP2_CTRL Video port */
+ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
+ val |= ISPCCP2_CTRL_VP_ONLY_EN; /* Disable the memory write port */
+
+ if (isp->revision == ISP_REVISION_15_0) {
+ vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 65536);
+ vpclk_div = min(ISPCCP2_VPCLK_FRACDIV / vpclk_div, 65535U);
+ BIT_SET(val, ISPCCP2_CTRL_VPCLK_DIV_SHIFT,
+ ISPCCP2_CTRL_VPCLK_DIV_MASK, vpclk_div);
+ } else {
+ vpclk_div = clamp_t(unsigned int, vpclk_div, 1, 4);
+ BIT_SET(val, ISPCCP2_CTRL_VP_OUT_CTRL_SHIFT,
+ ISPCCP2_CTRL_VP_OUT_CTRL_MASK, vpclk_div - 1);
+ }
+
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL);
+}
+
+/*
+ * ccp2_lcx_config - Initialize CCP2 logical channel interface.
+ * @ccp2: Pointer to ISP CCP2 device
+ * @config: Pointer to ISP LCx config structure.
+ *
+ * This will analyze the parameters passed by the interface config
+ * and configure CSI1/CCP2 logical channel
+ *
+ */
+static void ccp2_lcx_config(struct isp_ccp2_device *ccp2,
+ struct isp_interface_lcx_config *config)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ u32 val, format;
+
+ switch (config->format) {
+ case V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8:
+ format = ISPCCP2_LCx_CTRL_FORMAT_RAW8_DPCM10_VP;
+ break;
+ case V4L2_MBUS_FMT_SGRBG10_1X10:
+ default:
+ format = ISPCCP2_LCx_CTRL_FORMAT_RAW10_VP; /* RAW10+VP */
+ break;
+ }
+ /* ISPCCP2_LCx_CTRL logical channel #0 */
+ val = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0))
+ | (ISPCCP2_LCx_CTRL_REGION_EN); /* Region */
+
+ if (isp->revision == ISP_REVISION_15_0) {
+ /* CRC */
+ BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT_15_0,
+ ISPCCP2_LCx_CTRL_CRC_MASK,
+ config->crc);
+ /* Format = RAW10+VP or RAW8+DPCM10+VP*/
+ BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT_15_0,
+ ISPCCP2_LCx_CTRL_FORMAT_MASK_15_0, format);
+ } else {
+ BIT_SET(val, ISPCCP2_LCx_CTRL_CRC_SHIFT,
+ ISPCCP2_LCx_CTRL_CRC_MASK,
+ config->crc);
+
+ BIT_SET(val, ISPCCP2_LCx_CTRL_FORMAT_SHIFT,
+ ISPCCP2_LCx_CTRL_FORMAT_MASK, format);
+ }
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_CTRL(0));
+
+ /* ISPCCP2_DAT_START for logical channel #0 */
+ isp_reg_writel(isp, config->data_start << ISPCCP2_LCx_DAT_SHIFT,
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_START(0));
+
+ /* ISPCCP2_DAT_SIZE for logical channel #0 */
+ isp_reg_writel(isp, config->data_size << ISPCCP2_LCx_DAT_SHIFT,
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCx_DAT_SIZE(0));
+
+ /* Enable error IRQs for logical channel #0 */
+ val = ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ;
+
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQSTATUS);
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LC01_IRQENABLE, val);
+}
+
+/*
+ * ccp2_if_configure - Configure ccp2 with data from sensor
+ * @ccp2: Pointer to ISP CCP2 device
+ *
+ * Return 0 on success or a negative error code
+ */
+static int ccp2_if_configure(struct isp_ccp2_device *ccp2)
+{
+ const struct isp_v4l2_subdevs_group *pdata;
+ struct v4l2_mbus_framefmt *format;
+ struct media_pad *pad;
+ struct v4l2_subdev *sensor;
+ u32 lines = 0;
+ int ret;
+
+ ccp2_pwr_cfg(ccp2);
+
+ pad = media_entity_remote_source(&ccp2->pads[CCP2_PAD_SINK]);
+ sensor = media_entity_to_v4l2_subdev(pad->entity);
+ pdata = sensor->host_priv;
+
+ ret = ccp2_phyif_config(ccp2, &pdata->bus.ccp2);
+ if (ret < 0)
+ return ret;
+
+ ccp2_vp_config(ccp2, pdata->bus.ccp2.vpclk_div + 1);
+
+ v4l2_subdev_call(sensor, sensor, g_skip_top_lines, &lines);
+
+ format = &ccp2->formats[CCP2_PAD_SINK];
+
+ ccp2->if_cfg.data_start = lines;
+ ccp2->if_cfg.crc = pdata->bus.ccp2.crc;
+ ccp2->if_cfg.format = format->code;
+ ccp2->if_cfg.data_size = format->height;
+
+ ccp2_lcx_config(ccp2, &ccp2->if_cfg);
+
+ return 0;
+}
+
+static int ccp2_adjust_bandwidth(struct isp_ccp2_device *ccp2)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
+ struct isp_device *isp = to_isp_device(ccp2);
+ const struct v4l2_mbus_framefmt *ofmt = &ccp2->formats[CCP2_PAD_SOURCE];
+ unsigned long l3_ick = pipe->l3_ick;
+ struct v4l2_fract *timeperframe;
+ unsigned int vpclk_div = 2;
+ unsigned int value;
+ u64 bound;
+ u64 area;
+
+ /* Compute the minimum clock divisor, based on the pipeline maximum
+ * data rate. This is an absolute lower bound if we don't want SBL
+ * overflows, so round the value up.
+ */
+ vpclk_div = max_t(unsigned int, DIV_ROUND_UP(l3_ick, pipe->max_rate),
+ vpclk_div);
+
+ /* Compute the maximum clock divisor, based on the requested frame rate.
+ * This is a soft lower bound to achieve a frame rate equal or higher
+ * than the requested value, so round the value down.
+ */
+ timeperframe = &pipe->max_timeperframe;
+
+ if (timeperframe->numerator) {
+ area = ofmt->width * ofmt->height;
+ bound = div_u64(area * timeperframe->denominator,
+ timeperframe->numerator);
+ value = min_t(u64, bound, l3_ick);
+ vpclk_div = max_t(unsigned int, l3_ick / value, vpclk_div);
+ }
+
+ dev_dbg(isp->dev, "%s: minimum clock divisor = %u\n", __func__,
+ vpclk_div);
+
+ return vpclk_div;
+}
+
+/*
+ * ccp2_mem_configure - Initialize CCP2 memory input/output interface
+ * @ccp2: Pointer to ISP CCP2 device
+ * @config: Pointer to ISP mem interface config structure
+ *
+ * This will analyze the parameters passed by the interface config
+ * structure, and configure the respective registers for proper
+ * CSI1/CCP2 memory input.
+ */
+static void ccp2_mem_configure(struct isp_ccp2_device *ccp2,
+ struct isp_interface_mem_config *config)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ u32 sink_pixcode = ccp2->formats[CCP2_PAD_SINK].code;
+ u32 source_pixcode = ccp2->formats[CCP2_PAD_SOURCE].code;
+ unsigned int dpcm_decompress = 0;
+ u32 val, hwords;
+
+ if (sink_pixcode != source_pixcode &&
+ sink_pixcode == V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8)
+ dpcm_decompress = 1;
+
+ ccp2_pwr_cfg(ccp2);
+
+ /* Hsize, Skip */
+ isp_reg_writel(isp, ISPCCP2_LCM_HSIZE_SKIP_MIN |
+ (config->hsize_count << ISPCCP2_LCM_HSIZE_SHIFT),
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_HSIZE);
+
+ /* Vsize, no. of lines */
+ isp_reg_writel(isp, config->vsize_count << ISPCCP2_LCM_VSIZE_SHIFT,
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_VSIZE);
+
+ if (ccp2->video_in.bpl_padding == 0)
+ config->src_ofst = 0;
+ else
+ config->src_ofst = ccp2->video_in.bpl_value;
+
+ isp_reg_writel(isp, config->src_ofst, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LCM_SRC_OFST);
+
+ /* Source and Destination formats */
+ val = ISPCCP2_LCM_CTRL_DST_FORMAT_RAW10 <<
+ ISPCCP2_LCM_CTRL_DST_FORMAT_SHIFT;
+
+ if (dpcm_decompress) {
+ /* source format is RAW8 */
+ val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW8 <<
+ ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT;
+
+ /* RAW8 + DPCM10 - simple predictor */
+ val |= ISPCCP2_LCM_CTRL_SRC_DPCM_PRED;
+
+ /* enable source DPCM decompression */
+ val |= ISPCCP2_LCM_CTRL_SRC_DECOMPR_DPCM10 <<
+ ISPCCP2_LCM_CTRL_SRC_DECOMPR_SHIFT;
+ } else {
+ /* source format is RAW10 */
+ val |= ISPCCP2_LCM_CTRL_SRC_FORMAT_RAW10 <<
+ ISPCCP2_LCM_CTRL_SRC_FORMAT_SHIFT;
+ }
+
+ /* Burst size to 32x64 */
+ val |= ISPCCP2_LCM_CTRL_BURST_SIZE_32X <<
+ ISPCCP2_LCM_CTRL_BURST_SIZE_SHIFT;
+
+ isp_reg_writel(isp, val, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_CTRL);
+
+ /* Prefetch setup */
+ if (dpcm_decompress)
+ hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN +
+ config->hsize_count) >> 3;
+ else
+ hwords = (ISPCCP2_LCM_HSIZE_SKIP_MIN +
+ config->hsize_count) >> 2;
+
+ isp_reg_writel(isp, hwords << ISPCCP2_LCM_PREFETCH_SHIFT,
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_PREFETCH);
+
+ /* Video port */
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_CTRL,
+ ISPCCP2_CTRL_IO_OUT_SEL | ISPCCP2_CTRL_MODE);
+ ccp2_vp_config(ccp2, ccp2_adjust_bandwidth(ccp2));
+
+ /* Clear LCM interrupts */
+ isp_reg_writel(isp, ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ |
+ ISPCCP2_LCM_IRQSTATUS_EOF_IRQ,
+ OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQSTATUS);
+
+ /* Enable LCM interupts */
+ isp_reg_set(isp, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_IRQENABLE,
+ ISPCCP2_LCM_IRQSTATUS_EOF_IRQ |
+ ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ);
+}
+
+/*
+ * ccp2_set_inaddr - Sets memory address of input frame.
+ * @ccp2: Pointer to ISP CCP2 device
+ * @addr: 32bit memory address aligned on 32byte boundary.
+ *
+ * Configures the memory address from which the input frame is to be read.
+ */
+static void ccp2_set_inaddr(struct isp_ccp2_device *ccp2, u32 addr)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+
+ isp_reg_writel(isp, addr, OMAP3_ISP_IOMEM_CCP2, ISPCCP2_LCM_SRC_ADDR);
+}
+
+/* -----------------------------------------------------------------------------
+ * Interrupt handling
+ */
+
+static void ccp2_isr_buffer(struct isp_ccp2_device *ccp2)
+{
+ struct isp_pipeline *pipe = to_isp_pipeline(&ccp2->subdev.entity);
+ struct isp_buffer *buffer;
+
+ buffer = omap3isp_video_buffer_next(&ccp2->video_in, ccp2->error);
+ if (buffer != NULL)
+ ccp2_set_inaddr(ccp2, buffer->isp_addr);
+
+ pipe->state |= ISP_PIPELINE_IDLE_INPUT;
+
+ if (ccp2->state == ISP_PIPELINE_STREAM_SINGLESHOT) {
+ if (isp_pipeline_ready(pipe))
+ omap3isp_pipeline_set_stream(pipe,
+ ISP_PIPELINE_STREAM_SINGLESHOT);
+ }
+
+ ccp2->error = 0;
+}
+
+/*
+ * omap3isp_ccp2_isr - Handle ISP CCP2 interrupts
+ * @ccp2: Pointer to ISP CCP2 device
+ *
+ * This will handle the CCP2 interrupts
+ *
+ * Returns -EIO in case of error, or 0 on success.
+ */
+int omap3isp_ccp2_isr(struct isp_ccp2_device *ccp2)
+{
+ struct isp_device *isp = to_isp_device(ccp2);
+ int ret = 0;
+ static const u32 ISPCCP2_LC01_ERROR =
+ ISPCCP2_LC01_IRQSTATUS_LC0_FIFO_OVF_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_CRC_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FSP_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FW_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_FSC_IRQ |
+ ISPCCP2_LC01_IRQSTATUS_LC0_SSC_IRQ;
+ u32 lcx_irqstatus, lcm_irqstatus;
+
+ /* First clear the interrupts */
+ lcx_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LC01_IRQSTATUS);
+ isp_reg_writel(isp, lcx_irqstatus, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LC01_IRQSTATUS);
+
+ lcm_irqstatus = isp_reg_readl(isp, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LCM_IRQSTATUS);
+ isp_reg_writel(isp, lcm_irqstatus, OMAP3_ISP_IOMEM_CCP2,
+ ISPCCP2_LCM_IRQSTATUS);
+ /* Errors */
+ if (lcx_irqstatus & ISPCCP2_LC01_ERROR) {
+ ccp2->error = 1;
+ dev_dbg(isp->dev, "CCP2 err:%x\n", lcx_irqstatus);
+ return -EIO;
+ }
+
+ if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_OCPERROR_IRQ) {
+ ccp2->error = 1;
+ dev_dbg(isp->dev, "CCP2 OCP err:%x\n", lcm_irqstatus);
+ ret = -EIO;
+ }
+
+ if (omap3isp_module_sync_is_stopping(&ccp2->wait, &ccp2->stopping))
+ return 0;
+
+ /* Frame number propagation */
+ if (lcx_irqstatus & ISPCCP2_LC01_IRQSTATUS_LC0_FS_IRQ) {
+ struct isp_pipeline *pipe =
+ to_isp_pipeline(&ccp2->subdev.entity);
+ if (pipe->do_propagation)
+ atomic_inc(&pipe->frame_number);
+ }
+
+ /* Handle queued buffers on frame end interrupts */
+ if (lcm_irqstatus & ISPCCP2_LCM_IRQSTATUS_EOF_IRQ)
+ ccp2_isr_buffer(ccp2);
+
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * V4L2 subdev operations
+ */
+
+static const unsigned int ccp2_fmts[] = {
+ V4L2_MBUS_FMT_SGRBG10_1X10,
+ V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8,
+};
+
+/*
+ * __ccp2_get_format - helper function for getting ccp2 format
+ * @ccp2 : Pointer to ISP CCP2 device
+ * @fh : V4L2 subdev file handle
+ * @pad : pad number
+ * @which : wanted subdev format
+ * return format structure or NULL on error
+ */
+static struct v4l2_mbus_framefmt *
+__ccp2_get_format(struct isp_ccp2_device *ccp2, struct v4l2_subdev_fh *fh,
+ unsigned int pad, enum v4l2_subdev_format_whence which)
+{
+ if (which == V4L2_SUBDEV_FORMAT_TRY)
+ return v4l2_subdev_get_try_format(fh, pad);
+ else
+ return &ccp2->formats[pad];
+}
+
+/*
+ * ccp2_try_format - Handle try format by pad subdev method
+ * @ccp2 : Pointer to ISP CCP2 device
+ * @fh : V4L2 subdev file handle
+ * @pad : pad num
+ * @fmt : pointer to v4l2 mbus format structure
+ * @which : wanted subdev format
+ */
+static void ccp2_try_format(struct isp_ccp2_device *ccp2,
+ struct v4l2_subdev_fh *fh, unsigned int pad,
+ struct v4l2_mbus_framefmt *fmt,
+ enum v4l2_subdev_format_whence which)
+{
+ struct v4l2_mbus_framefmt *format;
+
+ switch (pad) {
+ case CCP2_PAD_SINK:
+ if (fmt->code != V4L2_MBUS_FMT_SGRBG10_DPCM8_1X8)
+ fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+
+ if (ccp2->input == CCP2_INPUT_SENSOR) {
+ fmt->width = clamp_t(u32, fmt->width,
+ ISPCCP2_DAT_START_MIN,
+ ISPCCP2_DAT_START_MAX);
+ fmt->height = clamp_t(u32, fmt->height,
+ ISPCCP2_DAT_SIZE_MIN,
+ ISPCCP2_DAT_SIZE_MAX);
+ } else if (ccp2->input == CCP2_INPUT_MEMORY) {
+ fmt->width = clamp_t(u32, fmt->width,
+ ISPCCP2_LCM_HSIZE_COUNT_MIN,
+ ISPCCP2_LCM_HSIZE_COUNT_MAX);
+ fmt->height = clamp_t(u32, fmt->height,
+ ISPCCP2_LCM_VSIZE_MIN,
+ ISPCCP2_LCM_VSIZE_MAX);
+ }
+ break;
+
+ case CCP2_PAD_SOURCE:
+ /* Source format - copy sink format and change pixel code
+ * to SGRBG10_1X10 as we don't support CCP2 write to memory.
+ * When CCP2 write to memory feature will be added this
+ * should be changed properly.
+ */
+ format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK, which);
+ memcpy(fmt, format, sizeof(*fmt));
+ fmt->code = V4L2_MBUS_FMT_SGRBG10_1X10;
+ break;
+ }
+
+ fmt->field = V4L2_FIELD_NONE;
+ fmt->colorspace = V4L2_COLORSPACE_SRGB;
+}
+
+/*
+ * ccp2_enum_mbus_code - Handle pixel format enumeration
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @code : pointer to v4l2_subdev_mbus_code_enum structure
+ * return -EINVAL or zero on success
+ */
+static int ccp2_enum_mbus_code(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_mbus_code_enum *code)
+{
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ if (code->pad == CCP2_PAD_SINK) {
+ if (code->index >= ARRAY_SIZE(ccp2_fmts))
+ return -EINVAL;
+
+ code->code = ccp2_fmts[code->index];
+ } else {
+ if (code->index != 0)
+ return -EINVAL;
+
+ format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SINK,
+ V4L2_SUBDEV_FORMAT_TRY);
+ code->code = format->code;
+ }
+
+ return 0;
+}
+
+static int ccp2_enum_frame_size(struct v4l2_subdev *sd,
+ struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_frame_size_enum *fse)
+{
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt format;
+
+ if (fse->index != 0)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = 1;
+ format.height = 1;
+ ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->min_width = format.width;
+ fse->min_height = format.height;
+
+ if (format.code != fse->code)
+ return -EINVAL;
+
+ format.code = fse->code;
+ format.width = -1;
+ format.height = -1;
+ ccp2_try_format(ccp2, fh, fse->pad, &format, V4L2_SUBDEV_FORMAT_TRY);
+ fse->max_width = format.width;
+ fse->max_height = format.height;
+
+ return 0;
+}
+
+/*
+ * ccp2_get_format - Handle get format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt : pointer to v4l2 subdev format structure
+ * return -EINVAL or zero on sucess
+ */
+static int ccp2_get_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ fmt->format = *format;
+ return 0;
+}
+
+/*
+ * ccp2_set_format - Handle set format by pads subdev method
+ * @sd : pointer to v4l2 subdev structure
+ * @fh : V4L2 subdev file handle
+ * @fmt : pointer to v4l2 subdev format structure
+ * returns zero
+ */
+static int ccp2_set_format(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh,
+ struct v4l2_subdev_format *fmt)
+{
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+ struct v4l2_mbus_framefmt *format;
+
+ format = __ccp2_get_format(ccp2, fh, fmt->pad, fmt->which);
+ if (format == NULL)
+ return -EINVAL;
+
+ ccp2_try_format(ccp2, fh, fmt->pad, &fmt->format, fmt->which);
+ *format = fmt->format;
+
+ /* Propagate the format from sink to source */
+ if (fmt->pad == CCP2_PAD_SINK) {
+ format = __ccp2_get_format(ccp2, fh, CCP2_PAD_SOURCE,
+ fmt->which);
+ *format = fmt->format;
+ ccp2_try_format(ccp2, fh, CCP2_PAD_SOURCE, format, fmt->which);
+ }
+
+ return 0;
+}
+
+/*
+ * ccp2_init_formats - Initialize formats on all pads
+ * @sd: ISP CCP2 V4L2 subdevice
+ * @fh: V4L2 subdev file handle
+ *
+ * Initialize all pad formats with default values. If fh is not NULL, try
+ * formats are initialized on the file handle. Otherwise active formats are
+ * initialized on the device.
+ */
+static int ccp2_init_formats(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh)
+{
+ struct v4l2_subdev_format format;
+
+ memset(&format, 0, sizeof(format));
+ format.pad = CCP2_PAD_SINK;
+ format.which = fh ? V4L2_SUBDEV_FORMAT_TRY : V4L2_SUBDEV_FORMAT_ACTIVE;
+ format.format.code = V4L2_MBUS_FMT_SGRBG10_1X10;
+ format.format.width = 4096;
+ format.format.height = 4096;
+ ccp2_set_format(sd, fh, &format);
+
+ return 0;
+}
+
+/*
+ * ccp2_s_stream - Enable/Disable streaming on ccp2 subdev
+ * @sd : pointer to v4l2 subdev structure
+ * @enable: 1 == Enable, 0 == Disable
+ * return zero
+ */
+static int ccp2_s_stream(struct v4l2_subdev *sd, int enable)
+{
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+ struct isp_device *isp = to_isp_device(ccp2);
+ struct device *dev = to_device(ccp2);
+ int ret;
+
+ if (ccp2->state == ISP_PIPELINE_STREAM_STOPPED) {
+ if (enable == ISP_PIPELINE_STREAM_STOPPED)
+ return 0;
+ atomic_set(&ccp2->stopping, 0);
+ ccp2->error = 0;
+ }
+
+ switch (enable) {
+ case ISP_PIPELINE_STREAM_CONTINUOUS:
+ if (ccp2->phy) {
+ ret = omap3isp_csiphy_acquire(ccp2->phy);
+ if (ret < 0)
+ return ret;
+ }
+
+ ccp2_if_configure(ccp2);
+ ccp2_print_status(ccp2);
+
+ /* Enable CSI1/CCP2 interface */
+ ccp2_if_enable(ccp2, 1);
+ break;
+
+ case ISP_PIPELINE_STREAM_SINGLESHOT:
+ if (ccp2->state != ISP_PIPELINE_STREAM_SINGLESHOT) {
+ struct v4l2_mbus_framefmt *format;
+
+ format = &ccp2->formats[CCP2_PAD_SINK];
+
+ ccp2->mem_cfg.hsize_count = format->width;
+ ccp2->mem_cfg.vsize_count = format->height;
+ ccp2->mem_cfg.src_ofst = 0;
+
+ ccp2_mem_configure(ccp2, &ccp2->mem_cfg);
+ omap3isp_sbl_enable(isp, OMAP3_ISP_SBL_CSI1_READ);
+ ccp2_print_status(ccp2);
+ }
+ ccp2_mem_enable(ccp2, 1);
+ break;
+
+ case ISP_PIPELINE_STREAM_STOPPED:
+ if (omap3isp_module_sync_idle(&sd->entity, &ccp2->wait,
+ &ccp2->stopping))
+ dev_dbg(dev, "%s: module stop timeout.\n", sd->name);
+ if (ccp2->input == CCP2_INPUT_MEMORY) {
+ ccp2_mem_enable(ccp2, 0);
+ omap3isp_sbl_disable(isp, OMAP3_ISP_SBL_CSI1_READ);
+ } else if (ccp2->input == CCP2_INPUT_SENSOR) {
+ /* Disable CSI1/CCP2 interface */
+ ccp2_if_enable(ccp2, 0);
+ if (ccp2->phy)
+ omap3isp_csiphy_release(ccp2->phy);
+ }
+ break;
+ }
+
+ ccp2->state = enable;
+ return 0;
+}
+
+/* subdev video operations */
+static const struct v4l2_subdev_video_ops ccp2_sd_video_ops = {
+ .s_stream = ccp2_s_stream,
+};
+
+/* subdev pad operations */
+static const struct v4l2_subdev_pad_ops ccp2_sd_pad_ops = {
+ .enum_mbus_code = ccp2_enum_mbus_code,
+ .enum_frame_size = ccp2_enum_frame_size,
+ .get_fmt = ccp2_get_format,
+ .set_fmt = ccp2_set_format,
+};
+
+/* subdev operations */
+static const struct v4l2_subdev_ops ccp2_sd_ops = {
+ .video = &ccp2_sd_video_ops,
+ .pad = &ccp2_sd_pad_ops,
+};
+
+/* subdev internal operations */
+static const struct v4l2_subdev_internal_ops ccp2_sd_internal_ops = {
+ .open = ccp2_init_formats,
+};
+
+/* --------------------------------------------------------------------------
+ * ISP ccp2 video device node
+ */
+
+/*
+ * ccp2_video_queue - Queue video buffer.
+ * @video : Pointer to isp video structure
+ * @buffer: Pointer to isp_buffer structure
+ * return -EIO or zero on success
+ */
+static int ccp2_video_queue(struct isp_video *video, struct isp_buffer *buffer)
+{
+ struct isp_ccp2_device *ccp2 = &video->isp->isp_ccp2;
+
+ ccp2_set_inaddr(ccp2, buffer->isp_addr);
+ return 0;
+}
+
+static const struct isp_video_operations ccp2_video_ops = {
+ .queue = ccp2_video_queue,
+};
+
+/* -----------------------------------------------------------------------------
+ * Media entity operations
+ */
+
+/*
+ * ccp2_link_setup - Setup ccp2 connections.
+ * @entity : Pointer to media entity structure
+ * @local : Pointer to local pad array
+ * @remote : Pointer to remote pad array
+ * @flags : Link flags
+ * return -EINVAL on error or zero on success
+ */
+static int ccp2_link_setup(struct media_entity *entity,
+ const struct media_pad *local,
+ const struct media_pad *remote, u32 flags)
+{
+ struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity);
+ struct isp_ccp2_device *ccp2 = v4l2_get_subdevdata(sd);
+
+ switch (local->index | media_entity_type(remote->entity)) {
+ case CCP2_PAD_SINK | MEDIA_ENT_T_DEVNODE:
+ /* read from memory */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (ccp2->input == CCP2_INPUT_SENSOR)
+ return -EBUSY;
+ ccp2->input = CCP2_INPUT_MEMORY;
+ } else {
+ if (ccp2->input == CCP2_INPUT_MEMORY)
+ ccp2->input = CCP2_INPUT_NONE;
+ }
+ break;
+
+ case CCP2_PAD_SINK | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* read from sensor/phy */
+ if (flags & MEDIA_LNK_FL_ENABLED) {
+ if (ccp2->input == CCP2_INPUT_MEMORY)
+ return -EBUSY;
+ ccp2->input = CCP2_INPUT_SENSOR;
+ } else {
+ if (ccp2->input == CCP2_INPUT_SENSOR)
+ ccp2->input = CCP2_INPUT_NONE;
+ } break;
+
+ case CCP2_PAD_SOURCE | MEDIA_ENT_T_V4L2_SUBDEV:
+ /* write to video port/ccdc */
+ if (flags & MEDIA_LNK_FL_ENABLED)
+ ccp2->output = CCP2_OUTPUT_CCDC;
+ else
+ ccp2->output = CCP2_OUTPUT_NONE;
+ break;
+
+ default:
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+/* media operations */
+static const struct media_entity_operations ccp2_media_ops = {
+ .link_setup = ccp2_link_setup,
+};
+
+/*
+ * ccp2_init_entities - Initialize ccp2 subdev and media entity.
+ * @ccp2: Pointer to ISP CCP2 device
+ * return negative error code or zero on success
+ */
+static int ccp2_init_entities(struct isp_ccp2_device *ccp2)
+{
+ struct v4l2_subdev *sd = &ccp2->subdev;
+ struct media_pad *pads = ccp2->pads;
+ struct media_entity *me = &sd->entity;
+ int ret;
+
+ ccp2->input = CCP2_INPUT_NONE;
+ ccp2->output = CCP2_OUTPUT_NONE;
+
+ v4l2_subdev_init(sd, &ccp2_sd_ops);
+ sd->internal_ops = &ccp2_sd_internal_ops;
+ strlcpy(sd->name, "OMAP3 ISP CCP2", sizeof(sd->name));
+ sd->grp_id = 1 << 16; /* group ID for isp subdevs */
+ v4l2_set_subdevdata(sd, ccp2);
+ sd->flags |= V4L2_SUBDEV_FL_HAS_DEVNODE;
+
+ pads[CCP2_PAD_SINK].flags = MEDIA_PAD_FL_SINK;
+ pads[CCP2_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE;
+
+ me->ops = &ccp2_media_ops;
+ ret = media_entity_init(me, CCP2_PADS_NUM, pads, 0);
+ if (ret < 0)
+ return ret;
+
+ ccp2_init_formats(sd, NULL);
+
+ /*
+ * The CCP2 has weird line alignment requirements, possibly caused by
+ * DPCM8 decompression. Line length for data read from memory must be a
+ * multiple of 128 bits (16 bytes) in continuous mode (when no padding
+ * is present at end of lines). Additionally, if padding is used, the
+ * padded line length must be a multiple of 32 bytes. To simplify the
+ * implementation we use a fixed 32 bytes alignment regardless of the
+ * input format and width. If strict 128 bits alignment support is
+ * required ispvideo will need to be made aware of this special dual
+ * alignement requirements.
+ */
+ ccp2->video_in.type = V4L2_BUF_TYPE_VIDEO_OUTPUT;
+ ccp2->video_in.bpl_alignment = 32;
+ ccp2->video_in.bpl_max = 0xffffffe0;
+ ccp2->video_in.isp = to_isp_device(ccp2);
+ ccp2->video_in.ops = &ccp2_video_ops;
+ ccp2->video_in.capture_mem = PAGE_ALIGN(4096 * 4096) * 3;
+
+ ret = omap3isp_video_init(&ccp2->video_in, "CCP2");
+ if (ret < 0)
+ return ret;
+
+ /* Connect the video node to the ccp2 subdev. */
+ ret = media_entity_create_link(&ccp2->video_in.video.entity, 0,
+ &ccp2->subdev.entity, CCP2_PAD_SINK, 0);
+ if (ret < 0)
+ return ret;
+
+ return 0;
+}
+
+/*
+ * omap3isp_ccp2_unregister_entities - Unregister media entities: subdev
+ * @ccp2: Pointer to ISP CCP2 device
+ */
+void omap3isp_ccp2_unregister_entities(struct isp_ccp2_device *ccp2)
+{
+ media_entity_cleanup(&ccp2->subdev.entity);
+
+ v4l2_device_unregister_subdev(&ccp2->subdev);
+ omap3isp_video_unregister(&ccp2->video_in);
+}
+
+/*
+ * omap3isp_ccp2_register_entities - Register the subdev media entity
+ * @ccp2: Pointer to ISP CCP2 device
+ * @vdev: Pointer to v4l device
+ * return negative error code or zero on success
+ */
+
+int omap3isp_ccp2_register_entities(struct isp_ccp2_device *ccp2,
+ struct v4l2_device *vdev)
+{
+ int ret;
+
+ /* Register the subdev and video nodes. */
+ ret = v4l2_device_register_subdev(vdev, &ccp2->subdev);
+ if (ret < 0)
+ goto error;
+
+ ret = omap3isp_video_register(&ccp2->video_in, vdev);
+ if (ret < 0)
+ goto error;
+
+ return 0;
+
+error:
+ omap3isp_ccp2_unregister_entities(ccp2);
+ return ret;
+}
+
+/* -----------------------------------------------------------------------------
+ * ISP ccp2 initialisation and cleanup
+ */
+
+/*
+ * omap3isp_ccp2_cleanup - CCP2 un-initialization
+ * @isp : Pointer to ISP device
+ */
+void omap3isp_ccp2_cleanup(struct isp_device *isp)
+{
+}
+
+/*
+ * omap3isp_ccp2_init - CCP2 initialization.
+ * @isp : Pointer to ISP device
+ * return negative error code or zero on success
+ */
+int omap3isp_ccp2_init(struct isp_device *isp)
+{
+ struct isp_ccp2_device *ccp2 = &isp->isp_ccp2;
+ int ret;
+
+ init_waitqueue_head(&ccp2->wait);
+
+ /* On the OMAP36xx, the CCP2 uses the CSI PHY1 or PHY2, shared with
+ * the CSI2c or CSI2a receivers. The PHY then needs to be explicitly
+ * configured.
+ *
+ * TODO: Don't hardcode the usage of PHY1 (shared with CSI2c).
+ */
+ if (isp->revision == ISP_REVISION_15_0)
+ ccp2->phy = &isp->isp_csiphy1;
+
+ ret = ccp2_init_entities(ccp2);
+ if (ret < 0)
+ goto out;
+
+ ccp2_reset(ccp2);
+out:
+ if (ret)
+ omap3isp_ccp2_cleanup(isp);
+
+ return ret;
+}