[media] smiapp: Add driver

Add driver for SMIA++/SMIA image sensors. The driver exposes the sensor as
three subdevs, pixel array, binner and scaler --- in case the device has a
scaler.

Currently it relies on the board code for external clock handling. There is
no fast way out of this dependency before the ISP drivers (omap3isp) among
others will be able to export that clock through the clock framework
instead.

Signed-off-by: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 251 insertions, 0 deletions

diff --git a/drivers/media/video/smiapp/smiapp.h b/drivers/media/video/smiapp/smiapp.h
new file mode 100644
index 000000000000..805d8c8a3c18
--- /dev/null
+++ b/drivers/media/video/smiapp/smiapp.h
@@ -0,0 +1,251 @@
+/*
+ * drivers/media/video/smiapp/smiapp.h
+ *
+ * Generic driver for SMIA/SMIA++ compliant camera modules
+ *
+ * Copyright (C) 2010--2012 Nokia Corporation
+ * Contact: Sakari Ailus <sakari.ailus@maxwell.research.nokia.com>
+ *
+ * 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
+ *
+ */
+
+#ifndef __SMIAPP_PRIV_H_
+#define __SMIAPP_PRIV_H_
+
+#include <linux/mutex.h>
+#include <media/v4l2-ctrls.h>
+#include <media/v4l2-subdev.h>
+#include <media/smiapp.h>
+
+#include "../smiapp-pll.h"
+#include "smiapp-reg.h"
+#include "smiapp-regs.h"
+#include "smiapp-quirk.h"
+
+/*
+ * Standard SMIA++ constants
+ */
+#define SMIA_VERSION_1                  10
+#define SMIAPP_VERSION_0_8              8 /* Draft 0.8 */
+#define SMIAPP_VERSION_0_9              9 /* Draft 0.9 */
+#define SMIAPP_VERSION_1                10
+
+#define SMIAPP_PROFILE_0                0
+#define SMIAPP_PROFILE_1                1
+#define SMIAPP_PROFILE_2                2
+
+#define SMIAPP_NVM_PAGE_SIZE            64      /* bytes */
+
+#define SMIAPP_RESET_DELAY_CLOCKS       2400
+#define SMIAPP_RESET_DELAY(clk)                         \
+        (1000 + (SMIAPP_RESET_DELAY_CLOCKS * 1000       \
+                 + (clk) / 1000 - 1) / ((clk) / 1000))
+
+#include "smiapp-limits.h"
+
+struct smiapp_quirk;
+
+#define SMIAPP_MODULE_IDENT_FLAG_REV_LE         (1 << 0)
+
+struct smiapp_module_ident {
+        u8 manufacturer_id;
+        u16 model_id;
+        u8 revision_number_major;
+
+        u8 flags;
+
+        char *name;
+        const struct smiapp_quirk *quirk;
+};
+
+struct smiapp_module_info {
+        u32 manufacturer_id;
+        u32 model_id;
+        u32 revision_number_major;
+        u32 revision_number_minor;
+
+        u32 module_year;
+        u32 module_month;
+        u32 module_day;
+
+        u32 sensor_manufacturer_id;
+        u32 sensor_model_id;
+        u32 sensor_revision_number;
+        u32 sensor_firmware_version;
+
+        u32 smia_version;
+        u32 smiapp_version;
+
+        u32 smiapp_profile;
+
+        char *name;
+        const struct smiapp_quirk *quirk;
+};
+
+#define SMIAPP_IDENT_FQ(manufacturer, model, rev, fl, _name, _quirk)    \
+        { .manufacturer_id = manufacturer,                              \
+          .model_id = model,                                            \
+          .revision_number_major = rev,                                 \
+          .flags = fl,                                                  \
+          .name = _name,                                                \
+          .quirk = _quirk, }
+
+#define SMIAPP_IDENT_LQ(manufacturer, model, rev, _name, _quirk)        \
+        { .manufacturer_id = manufacturer,                              \
+          .model_id = model,                                            \
+          .revision_number_major = rev,                                 \
+          .flags = SMIAPP_MODULE_IDENT_FLAG_REV_LE,                     \
+          .name = _name,                                                \
+          .quirk = _quirk, }
+
+#define SMIAPP_IDENT_L(manufacturer, model, rev, _name)                 \
+        { .manufacturer_id = manufacturer,                              \
+          .model_id = model,                                            \
+          .revision_number_major = rev,                                 \
+          .flags = SMIAPP_MODULE_IDENT_FLAG_REV_LE,                     \
+          .name = _name, }
+
+#define SMIAPP_IDENT_Q(manufacturer, model, rev, _name, _quirk)         \
+        { .manufacturer_id = manufacturer,                              \
+          .model_id = model,                                            \
+          .revision_number_major = rev,                                 \
+          .flags = 0,                                                   \
+          .name = _name,                                                \
+          .quirk = _quirk, }
+
+#define SMIAPP_IDENT(manufacturer, model, rev, _name)                   \
+        { .manufacturer_id = manufacturer,                              \
+          .model_id = model,                                            \
+          .revision_number_major = rev,                                 \
+          .flags = 0,                                                   \
+          .name = _name, }
+
+struct smiapp_reg_limits {
+        u32 addr;
+        char *what;
+};
+
+extern struct smiapp_reg_limits smiapp_reg_limits[];
+
+struct smiapp_csi_data_format {
+        u32 code;
+        u8 width;
+        u8 compressed;
+        u8 pixel_order;
+};
+
+#define SMIAPP_SUBDEVS                  3
+
+#define SMIAPP_PA_PAD_SRC               0
+#define SMIAPP_PAD_SINK                 0
+#define SMIAPP_PAD_SRC                  1
+#define SMIAPP_PADS                     2
+
+struct smiapp_binning_subtype {
+        u8 horizontal:4;
+        u8 vertical:4;
+} __packed;
+
+struct smiapp_subdev {
+        struct v4l2_subdev sd;
+        struct media_pad pads[2];
+        struct v4l2_rect sink_fmt;
+        struct v4l2_rect crop[2];
+        struct v4l2_rect compose; /* compose on sink */
+        unsigned short sink_pad;
+        unsigned short source_pad;
+        int npads;
+        struct smiapp_sensor *sensor;
+        struct v4l2_ctrl_handler ctrl_handler;
+};
+
+/*
+ * struct smiapp_sensor - Main device structure
+ */
+struct smiapp_sensor {
+        /*
+         * "mutex" is used to serialise access to all fields here
+         * except v4l2_ctrls at the end of the struct. "mutex" is also
+         * used to serialise access to file handle specific
+         * information. The exception to this rule is the power_mutex
+         * below.
+         */
+        struct mutex mutex;
+        /*
+         * power_mutex is used to serialise power management related
+         * activities. Acquiring "mutex" at that time isn't necessary
+         * since there are no other users anyway.
+         */
+        struct mutex power_mutex;
+        struct smiapp_subdev ssds[SMIAPP_SUBDEVS];
+        u32 ssds_used;
+        struct smiapp_subdev *src;
+        struct smiapp_subdev *binner;
+        struct smiapp_subdev *scaler;
+        struct smiapp_subdev *pixel_array;
+        struct smiapp_platform_data *platform_data;
+        struct regulator *vana;
+        u32 limits[SMIAPP_LIMIT_LAST];
+        u8 nbinning_subtypes;
+        struct smiapp_binning_subtype binning_subtypes[SMIAPP_BINNING_SUBTYPES];
+        u32 mbus_frame_fmts;
+        const struct smiapp_csi_data_format *csi_format;
+        const struct smiapp_csi_data_format *internal_csi_format;
+        u32 default_mbus_frame_fmts;
+        int default_pixel_order;
+
+        u8 binning_horizontal;
+        u8 binning_vertical;
+
+        u8 scale_m;
+        u8 scaling_mode;
+
+        u8 hvflip_inv_mask; /* H/VFLIP inversion due to sensor orientation */
+        u8 flash_capability;
+        u8 frame_skip;
+
+        int power_count;
+
+        bool streaming;
+        bool dev_init_done;
+
+        u8 *nvm;                /* nvm memory buffer */
+        unsigned int nvm_size;  /* bytes */
+
+        struct smiapp_module_info minfo;
+
+        struct smiapp_pll pll;
+
+        /* Pixel array controls */
+        struct v4l2_ctrl *analog_gain;
+        struct v4l2_ctrl *exposure;
+        struct v4l2_ctrl *hflip;
+        struct v4l2_ctrl *vflip;
+        struct v4l2_ctrl *vblank;
+        struct v4l2_ctrl *hblank;
+        struct v4l2_ctrl *pixel_rate_parray;
+        /* src controls */
+        struct v4l2_ctrl *link_freq;
+        struct v4l2_ctrl *pixel_rate_csi;
+};
+
+#define to_smiapp_subdev(_sd)                           \
+        container_of(_sd, struct smiapp_subdev, sd)
+
+#define to_smiapp_sensor(_sd)   \
+        (to_smiapp_subdev(_sd)->sensor)
+
+#endif /* __SMIAPP_PRIV_H_ */