1 files changed, 591 insertions, 0 deletions

diff --git a/drivers/media/i2c/vpx3220.c b/drivers/media/i2c/vpx3220.c
new file mode 100644
index 000000000000..2f67b4c5c823
--- /dev/null
+++ b/drivers/media/i2c/vpx3220.c
@@ -0,0 +1,591 @@
+/*
+ * vpx3220a, vpx3216b & vpx3214c video decoder driver version 0.0.1
+ *
+ * Copyright (C) 2001 Laurent Pinchart <lpinchart@freegates.be>
+ *
+ * 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.
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/delay.h>
+#include <linux/types.h>
+#include <linux/slab.h>
+#include <asm/uaccess.h>
+#include <linux/i2c.h>
+#include <linux/videodev2.h>
+#include <media/v4l2-device.h>
+#include <media/v4l2-chip-ident.h>
+#include <media/v4l2-ctrls.h>
+
+MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video decoder driver");
+MODULE_AUTHOR("Laurent Pinchart");
+MODULE_LICENSE("GPL");
+
+static int debug;
+module_param(debug, int, 0);
+MODULE_PARM_DESC(debug, "Debug level (0-1)");
+
+
+#define VPX_TIMEOUT_COUNT  10
+
+/* ----------------------------------------------------------------------- */
+
+struct vpx3220 {
+        struct v4l2_subdev sd;
+        struct v4l2_ctrl_handler hdl;
+        unsigned char reg[255];
+
+        v4l2_std_id norm;
+        int ident;
+        int input;
+        int enable;
+};
+
+static inline struct vpx3220 *to_vpx3220(struct v4l2_subdev *sd)
+{
+        return container_of(sd, struct vpx3220, sd);
+}
+
+static inline struct v4l2_subdev *to_sd(struct v4l2_ctrl *ctrl)
+{
+        return &container_of(ctrl->handler, struct vpx3220, hdl)->sd;
+}
+
+static char *inputs[] = { "internal", "composite", "svideo" };
+
+/* ----------------------------------------------------------------------- */
+
+static inline int vpx3220_write(struct v4l2_subdev *sd, u8 reg, u8 value)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+        struct vpx3220 *decoder = i2c_get_clientdata(client);
+
+        decoder->reg[reg] = value;
+        return i2c_smbus_write_byte_data(client, reg, value);
+}
+
+static inline int vpx3220_read(struct v4l2_subdev *sd, u8 reg)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+        return i2c_smbus_read_byte_data(client, reg);
+}
+
+static int vpx3220_fp_status(struct v4l2_subdev *sd)
+{
+        unsigned char status;
+        unsigned int i;
+
+        for (i = 0; i < VPX_TIMEOUT_COUNT; i++) {
+                status = vpx3220_read(sd, 0x29);
+
+                if (!(status & 4))
+                        return 0;
+
+                udelay(10);
+
+                if (need_resched())
+                        cond_resched();
+        }
+
+        return -1;
+}
+
+static int vpx3220_fp_write(struct v4l2_subdev *sd, u8 fpaddr, u16 data)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+        /* Write the 16-bit address to the FPWR register */
+        if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) {
+                v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+                return -1;
+        }
+
+        if (vpx3220_fp_status(sd) < 0)
+                return -1;
+
+        /* Write the 16-bit data to the FPDAT register */
+        if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) {
+                v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+                return -1;
+        }
+
+        return 0;
+}
+
+static u16 vpx3220_fp_read(struct v4l2_subdev *sd, u16 fpaddr)
+{
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+        s16 data;
+
+        /* Write the 16-bit address to the FPRD register */
+        if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) {
+                v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+                return -1;
+        }
+
+        if (vpx3220_fp_status(sd) < 0)
+                return -1;
+
+        /* Read the 16-bit data from the FPDAT register */
+        data = i2c_smbus_read_word_data(client, 0x28);
+        if (data == -1) {
+                v4l2_dbg(1, debug, sd, "%s: failed\n", __func__);
+                return -1;
+        }
+
+        return swab16(data);
+}
+
+static int vpx3220_write_block(struct v4l2_subdev *sd, const u8 *data, unsigned int len)
+{
+        u8 reg;
+        int ret = -1;
+
+        while (len >= 2) {
+                reg = *data++;
+                ret = vpx3220_write(sd, reg, *data++);
+                if (ret < 0)
+                        break;
+                len -= 2;
+        }
+
+        return ret;
+}
+
+static int vpx3220_write_fp_block(struct v4l2_subdev *sd,
+                const u16 *data, unsigned int len)
+{
+        u8 reg;
+        int ret = 0;
+
+        while (len > 1) {
+                reg = *data++;
+                ret |= vpx3220_fp_write(sd, reg, *data++);
+                len -= 2;
+        }
+
+        return ret;
+}
+
+/* ---------------------------------------------------------------------- */
+
+static const unsigned short init_ntsc[] = {
+        0x1c, 0x00,             /* NTSC tint angle */
+        0x88, 17,               /* Window 1 vertical */
+        0x89, 240,              /* Vertical lines in */
+        0x8a, 240,              /* Vertical lines out */
+        0x8b, 000,              /* Horizontal begin */
+        0x8c, 640,              /* Horizontal length */
+        0x8d, 640,              /* Number of pixels */
+        0x8f, 0xc00,            /* Disable window 2 */
+        0xf0, 0x73,             /* 13.5 MHz transport, Forced
+                                 * mode, latch windows */
+        0xf2, 0x13,             /* NTSC M, composite input */
+        0xe7, 0x1e1,            /* Enable vertical standard
+                                 * locking @ 240 lines */
+};
+
+static const unsigned short init_pal[] = {
+        0x88, 23,               /* Window 1 vertical begin */
+        0x89, 288,              /* Vertical lines in (16 lines
+                                 * skipped by the VFE) */
+        0x8a, 288,              /* Vertical lines out (16 lines
+                                 * skipped by the VFE) */
+        0x8b, 16,               /* Horizontal begin */
+        0x8c, 768,              /* Horizontal length */
+        0x8d, 784,              /* Number of pixels
+                                 * Must be >= Horizontal begin + Horizontal length */
+        0x8f, 0xc00,            /* Disable window 2 */
+        0xf0, 0x77,             /* 13.5 MHz transport, Forced
+                                 * mode, latch windows */
+        0xf2, 0x3d1,            /* PAL B,G,H,I, composite input */
+        0xe7, 0x241,            /* PAL/SECAM set to 288 lines */
+};
+
+static const unsigned short init_secam[] = {
+        0x88, 23,               /* Window 1 vertical begin */
+        0x89, 288,              /* Vertical lines in (16 lines
+                                 * skipped by the VFE) */
+        0x8a, 288,              /* Vertical lines out (16 lines
+                                 * skipped by the VFE) */
+        0x8b, 16,               /* Horizontal begin */
+        0x8c, 768,              /* Horizontal length */
+        0x8d, 784,              /* Number of pixels
+                                 * Must be >= Horizontal begin + Horizontal length */
+        0x8f, 0xc00,            /* Disable window 2 */
+        0xf0, 0x77,             /* 13.5 MHz transport, Forced
+                                 * mode, latch windows */
+        0xf2, 0x3d5,            /* SECAM, composite input */
+        0xe7, 0x241,            /* PAL/SECAM set to 288 lines */
+};
+
+static const unsigned char init_common[] = {
+        0xf2, 0x00,             /* Disable all outputs */
+        0x33, 0x0d,             /* Luma : VIN2, Chroma : CIN
+                                 * (clamp off) */
+        0xd8, 0xa8,             /* HREF/VREF active high, VREF
+                                 * pulse = 2, Odd/Even flag */
+        0x20, 0x03,             /* IF compensation 0dB/oct */
+        0xe0, 0xff,             /* Open up all comparators */
+        0xe1, 0x00,
+        0xe2, 0x7f,
+        0xe3, 0x80,
+        0xe4, 0x7f,
+        0xe5, 0x80,
+        0xe6, 0x00,             /* Brightness set to 0 */
+        0xe7, 0xe0,             /* Contrast to 1.0, noise shaping
+                                 * 10 to 8 2-bit error diffusion */
+        0xe8, 0xf8,             /* YUV422, CbCr binary offset,
+                                 * ... (p.32) */
+        0xea, 0x18,             /* LLC2 connected, output FIFO
+                                 * reset with VACTintern */
+        0xf0, 0x8a,             /* Half full level to 10, bus
+                                 * shuffler [7:0, 23:16, 15:8] */
+        0xf1, 0x18,             /* Single clock, sync mode, no
+                                 * FE delay, no HLEN counter */
+        0xf8, 0x12,             /* Port A, PIXCLK, HF# & FE#
+                                 * strength to 2 */
+        0xf9, 0x24,             /* Port B, HREF, VREF, PREF &
+                                 * ALPHA strength to 4 */
+};
+
+static const unsigned short init_fp[] = {
+        0x59, 0,
+        0xa0, 2070,             /* ACC reference */
+        0xa3, 0,
+        0xa4, 0,
+        0xa8, 30,
+        0xb2, 768,
+        0xbe, 27,
+        0x58, 0,
+        0x26, 0,
+        0x4b, 0x298,            /* PLL gain */
+};
+
+
+static int vpx3220_init(struct v4l2_subdev *sd, u32 val)
+{
+        struct vpx3220 *decoder = to_vpx3220(sd);
+
+        vpx3220_write_block(sd, init_common, sizeof(init_common));
+        vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
+        if (decoder->norm & V4L2_STD_NTSC)
+                vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
+        else if (decoder->norm & V4L2_STD_PAL)
+                vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+        else if (decoder->norm & V4L2_STD_SECAM)
+                vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
+        else
+                vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+        return 0;
+}
+
+static int vpx3220_status(struct v4l2_subdev *sd, u32 *pstatus, v4l2_std_id *pstd)
+{
+        int res = V4L2_IN_ST_NO_SIGNAL, status;
+        v4l2_std_id std = 0;
+
+        status = vpx3220_fp_read(sd, 0x0f3);
+
+        v4l2_dbg(1, debug, sd, "status: 0x%04x\n", status);
+
+        if (status < 0)
+                return status;
+
+        if ((status & 0x20) == 0) {
+                res = 0;
+
+                switch (status & 0x18) {
+                case 0x00:
+                case 0x10:
+                case 0x14:
+                case 0x18:
+                        std = V4L2_STD_PAL;
+                        break;
+
+                case 0x08:
+                        std = V4L2_STD_SECAM;
+                        break;
+
+                case 0x04:
+                case 0x0c:
+                case 0x1c:
+                        std = V4L2_STD_NTSC;
+                        break;
+                }
+        }
+        if (pstd)
+                *pstd = std;
+        if (pstatus)
+                *pstatus = res;
+        return 0;
+}
+
+static int vpx3220_querystd(struct v4l2_subdev *sd, v4l2_std_id *std)
+{
+        v4l2_dbg(1, debug, sd, "querystd\n");
+        return vpx3220_status(sd, NULL, std);
+}
+
+static int vpx3220_g_input_status(struct v4l2_subdev *sd, u32 *status)
+{
+        v4l2_dbg(1, debug, sd, "g_input_status\n");
+        return vpx3220_status(sd, status, NULL);
+}
+
+static int vpx3220_s_std(struct v4l2_subdev *sd, v4l2_std_id std)
+{
+        struct vpx3220 *decoder = to_vpx3220(sd);
+        int temp_input;
+
+        /* Here we back up the input selection because it gets
+           overwritten when we fill the registers with the
+           chosen video norm */
+        temp_input = vpx3220_fp_read(sd, 0xf2);
+
+        v4l2_dbg(1, debug, sd, "s_std %llx\n", (unsigned long long)std);
+        if (std & V4L2_STD_NTSC) {
+                vpx3220_write_fp_block(sd, init_ntsc, sizeof(init_ntsc) >> 1);
+                v4l2_dbg(1, debug, sd, "norm switched to NTSC\n");
+        } else if (std & V4L2_STD_PAL) {
+                vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+                v4l2_dbg(1, debug, sd, "norm switched to PAL\n");
+        } else if (std & V4L2_STD_SECAM) {
+                vpx3220_write_fp_block(sd, init_secam, sizeof(init_secam) >> 1);
+                v4l2_dbg(1, debug, sd, "norm switched to SECAM\n");
+        } else {
+                return -EINVAL;
+        }
+
+        decoder->norm = std;
+
+        /* And here we set the backed up video input again */
+        vpx3220_fp_write(sd, 0xf2, temp_input | 0x0010);
+        udelay(10);
+        return 0;
+}
+
+static int vpx3220_s_routing(struct v4l2_subdev *sd,
+                             u32 input, u32 output, u32 config)
+{
+        int data;
+
+        /* RJ:   input = 0: ST8 (PCTV) input
+                 input = 1: COMPOSITE  input
+                 input = 2: SVHS       input  */
+
+        const int input_vals[3][2] = {
+                {0x0c, 0},
+                {0x0d, 0},
+                {0x0e, 1}
+        };
+
+        if (input > 2)
+                return -EINVAL;
+
+        v4l2_dbg(1, debug, sd, "input switched to %s\n", inputs[input]);
+
+        vpx3220_write(sd, 0x33, input_vals[input][0]);
+
+        data = vpx3220_fp_read(sd, 0xf2) & ~(0x0020);
+        if (data < 0)
+                return data;
+        /* 0x0010 is required to latch the setting */
+        vpx3220_fp_write(sd, 0xf2,
+                        data | (input_vals[input][1] << 5) | 0x0010);
+
+        udelay(10);
+        return 0;
+}
+
+static int vpx3220_s_stream(struct v4l2_subdev *sd, int enable)
+{
+        v4l2_dbg(1, debug, sd, "s_stream %s\n", enable ? "on" : "off");
+
+        vpx3220_write(sd, 0xf2, (enable ? 0x1b : 0x00));
+        return 0;
+}
+
+static int vpx3220_s_ctrl(struct v4l2_ctrl *ctrl)
+{
+        struct v4l2_subdev *sd = to_sd(ctrl);
+
+        switch (ctrl->id) {
+        case V4L2_CID_BRIGHTNESS:
+                vpx3220_write(sd, 0xe6, ctrl->val);
+                return 0;
+        case V4L2_CID_CONTRAST:
+                /* Bit 7 and 8 is for noise shaping */
+                vpx3220_write(sd, 0xe7, ctrl->val + 192);
+                return 0;
+        case V4L2_CID_SATURATION:
+                vpx3220_fp_write(sd, 0xa0, ctrl->val);
+                return 0;
+        case V4L2_CID_HUE:
+                vpx3220_fp_write(sd, 0x1c, ctrl->val);
+                return 0;
+        }
+        return -EINVAL;
+}
+
+static int vpx3220_g_chip_ident(struct v4l2_subdev *sd, struct v4l2_dbg_chip_ident *chip)
+{
+        struct vpx3220 *decoder = to_vpx3220(sd);
+        struct i2c_client *client = v4l2_get_subdevdata(sd);
+
+        return v4l2_chip_ident_i2c_client(client, chip, decoder->ident, 0);
+}
+
+/* ----------------------------------------------------------------------- */
+
+static const struct v4l2_ctrl_ops vpx3220_ctrl_ops = {
+        .s_ctrl = vpx3220_s_ctrl,
+};
+
+static const struct v4l2_subdev_core_ops vpx3220_core_ops = {
+        .g_chip_ident = vpx3220_g_chip_ident,
+        .init = vpx3220_init,
+        .g_ext_ctrls = v4l2_subdev_g_ext_ctrls,
+        .try_ext_ctrls = v4l2_subdev_try_ext_ctrls,
+        .s_ext_ctrls = v4l2_subdev_s_ext_ctrls,
+        .g_ctrl = v4l2_subdev_g_ctrl,
+        .s_ctrl = v4l2_subdev_s_ctrl,
+        .queryctrl = v4l2_subdev_queryctrl,
+        .querymenu = v4l2_subdev_querymenu,
+        .s_std = vpx3220_s_std,
+};
+
+static const struct v4l2_subdev_video_ops vpx3220_video_ops = {
+        .s_routing = vpx3220_s_routing,
+        .s_stream = vpx3220_s_stream,
+        .querystd = vpx3220_querystd,
+        .g_input_status = vpx3220_g_input_status,
+};
+
+static const struct v4l2_subdev_ops vpx3220_ops = {
+        .core = &vpx3220_core_ops,
+        .video = &vpx3220_video_ops,
+};
+
+/* -----------------------------------------------------------------------
+ * Client management code
+ */
+
+static int vpx3220_probe(struct i2c_client *client,
+                        const struct i2c_device_id *id)
+{
+        struct vpx3220 *decoder;
+        struct v4l2_subdev *sd;
+        const char *name = NULL;
+        u8 ver;
+        u16 pn;
+
+        /* Check if the adapter supports the needed features */
+        if (!i2c_check_functionality(client->adapter,
+                I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA))
+                return -ENODEV;
+
+        decoder = kzalloc(sizeof(struct vpx3220), GFP_KERNEL);
+        if (decoder == NULL)
+                return -ENOMEM;
+        sd = &decoder->sd;
+        v4l2_i2c_subdev_init(sd, client, &vpx3220_ops);
+        decoder->norm = V4L2_STD_PAL;
+        decoder->input = 0;
+        decoder->enable = 1;
+        v4l2_ctrl_handler_init(&decoder->hdl, 4);
+        v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+                V4L2_CID_BRIGHTNESS, -128, 127, 1, 0);
+        v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+                V4L2_CID_CONTRAST, 0, 63, 1, 32);
+        v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+                V4L2_CID_SATURATION, 0, 4095, 1, 2048);
+        v4l2_ctrl_new_std(&decoder->hdl, &vpx3220_ctrl_ops,
+                V4L2_CID_HUE, -512, 511, 1, 0);
+        sd->ctrl_handler = &decoder->hdl;
+        if (decoder->hdl.error) {
+                int err = decoder->hdl.error;
+
+                v4l2_ctrl_handler_free(&decoder->hdl);
+                kfree(decoder);
+                return err;
+        }
+        v4l2_ctrl_handler_setup(&decoder->hdl);
+
+        ver = i2c_smbus_read_byte_data(client, 0x00);
+        pn = (i2c_smbus_read_byte_data(client, 0x02) << 8) +
+                i2c_smbus_read_byte_data(client, 0x01);
+        decoder->ident = V4L2_IDENT_VPX3220A;
+        if (ver == 0xec) {
+                switch (pn) {
+                case 0x4680:
+                        name = "vpx3220a";
+                        break;
+                case 0x4260:
+                        name = "vpx3216b";
+                        decoder->ident = V4L2_IDENT_VPX3216B;
+                        break;
+                case 0x4280:
+                        name = "vpx3214c";
+                        decoder->ident = V4L2_IDENT_VPX3214C;
+                        break;
+                }
+        }
+        if (name)
+                v4l2_info(sd, "%s found @ 0x%x (%s)\n", name,
+                        client->addr << 1, client->adapter->name);
+        else
+                v4l2_info(sd, "chip (%02x:%04x) found @ 0x%x (%s)\n",
+                        ver, pn, client->addr << 1, client->adapter->name);
+
+        vpx3220_write_block(sd, init_common, sizeof(init_common));
+        vpx3220_write_fp_block(sd, init_fp, sizeof(init_fp) >> 1);
+        /* Default to PAL */
+        vpx3220_write_fp_block(sd, init_pal, sizeof(init_pal) >> 1);
+        return 0;
+}
+
+static int vpx3220_remove(struct i2c_client *client)
+{
+        struct v4l2_subdev *sd = i2c_get_clientdata(client);
+        struct vpx3220 *decoder = to_vpx3220(sd);
+
+        v4l2_device_unregister_subdev(sd);
+        v4l2_ctrl_handler_free(&decoder->hdl);
+        kfree(decoder);
+        return 0;
+}
+
+static const struct i2c_device_id vpx3220_id[] = {
+        { "vpx3220a", 0 },
+        { "vpx3216b", 0 },
+        { "vpx3214c", 0 },
+        { }
+};
+MODULE_DEVICE_TABLE(i2c, vpx3220_id);
+
+static struct i2c_driver vpx3220_driver = {
+        .driver = {
+                .owner  = THIS_MODULE,
+                .name   = "vpx3220",
+        },
+        .probe          = vpx3220_probe,
+        .remove         = vpx3220_remove,
+        .id_table       = vpx3220_id,
+};
+
+module_i2c_driver(vpx3220_driver);