diff options
Diffstat (limited to 'drivers/media/video/vpx3220.c')
| -rw-r--r-- | drivers/media/video/vpx3220.c | 754 |
1 files changed, 754 insertions, 0 deletions
diff --git a/drivers/media/video/vpx3220.c b/drivers/media/video/vpx3220.c new file mode 100644 index 000000000000..0fd6c9a70917 --- /dev/null +++ b/drivers/media/video/vpx3220.c @@ -0,0 +1,754 @@ +/* + * 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 <linux/byteorder/swab.h> + +#include <asm/io.h> +#include <asm/uaccess.h> + +#include <linux/i2c.h> +#include <linux/i2c-dev.h> + +#define I2C_NAME(x) (x)->name + +#include <linux/videodev.h> +#include <linux/video_decoder.h> + +#define I2C_VPX3220 0x86 +#define VPX3220_DEBUG KERN_DEBUG "vpx3220: " + +static int debug = 0; +module_param(debug, int, 0); +MODULE_PARM_DESC(debug, "Debug level (0-1)"); + +#define dprintk(num, format, args...) \ + do { \ + if (debug >= num) \ + printk(format, ##args); \ + } while (0) + +#define VPX_TIMEOUT_COUNT 10 + +/* ----------------------------------------------------------------------- */ + +struct vpx3220 { + unsigned char reg[255]; + + int norm; + int input; + int enable; + int bright; + int contrast; + int hue; + int sat; +}; + +static char *inputs[] = { "internal", "composite", "svideo" }; + +/* ----------------------------------------------------------------------- */ +static inline int +vpx3220_write (struct i2c_client *client, + u8 reg, + u8 value) +{ + 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 i2c_client *client, + u8 reg) +{ + return i2c_smbus_read_byte_data(client, reg); +} + +static int +vpx3220_fp_status (struct i2c_client *client) +{ + unsigned char status; + unsigned int i; + + for (i = 0; i < VPX_TIMEOUT_COUNT; i++) { + status = vpx3220_read(client, 0x29); + + if (!(status & 4)) + return 0; + + udelay(10); + + if (need_resched()) + cond_resched(); + } + + return -1; +} + +static int +vpx3220_fp_write (struct i2c_client *client, + u8 fpaddr, + u16 data) +{ + /* Write the 16-bit address to the FPWR register */ + if (i2c_smbus_write_word_data(client, 0x27, swab16(fpaddr)) == -1) { + dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); + return -1; + } + + if (vpx3220_fp_status(client) < 0) + return -1; + + /* Write the 16-bit data to the FPDAT register */ + if (i2c_smbus_write_word_data(client, 0x28, swab16(data)) == -1) { + dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); + return -1; + } + + return 0; +} + +static u16 +vpx3220_fp_read (struct i2c_client *client, + u16 fpaddr) +{ + s16 data; + + /* Write the 16-bit address to the FPRD register */ + if (i2c_smbus_write_word_data(client, 0x26, swab16(fpaddr)) == -1) { + dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); + return -1; + } + + if (vpx3220_fp_status(client) < 0) + return -1; + + /* Read the 16-bit data from the FPDAT register */ + data = i2c_smbus_read_word_data(client, 0x28); + if (data == -1) { + dprintk(1, VPX3220_DEBUG "%s: failed\n", __func__); + return -1; + } + + return swab16(data); +} + +static int +vpx3220_write_block (struct i2c_client *client, + const u8 *data, + unsigned int len) +{ + u8 reg; + int ret = -1; + + while (len >= 2) { + reg = *data++; + if ((ret = + vpx3220_write(client, reg, *data++)) < 0) + break; + len -= 2; + } + + return ret; +} + +static int +vpx3220_write_fp_block (struct i2c_client *client, + const u16 *data, + unsigned int len) +{ + u8 reg; + int ret = 0; + + while (len > 1) { + reg = *data++; + ret |= vpx3220_fp_write(client, 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, 0x173, /* 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 + 16, /* Vertical lines in (16 lines + * skipped by the VFE) */ + 0x8a, 288 + 16, /* 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, 0x177, /* 13.5 MHz transport, Forced + * mode, latch windows */ + 0xf2, 0x3d1, /* PAL B,G,H,I, composite input */ + 0xe7, 0x261, /* PAL/SECAM set to 288 + 16 lines + * change to 0x241 for 288 lines */ +}; + +static const unsigned short init_secam[] = { + 0x88, 23 - 16, /* Window 1 vertical begin */ + 0x89, 288 + 16, /* Vertical lines in (16 lines + * skipped by the VFE) */ + 0x8a, 288 + 16, /* 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, 0x177, /* 13.5 MHz transport, Forced + * mode, latch windows */ + 0xf2, 0x3d5, /* SECAM, composite input */ + 0xe7, 0x261, /* PAL/SECAM set to 288 + 16 lines + * change to 0x241 for 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 void +vpx3220_dump_i2c (struct i2c_client *client) +{ + int len = sizeof(init_common); + const unsigned char *data = init_common; + + while (len > 1) { + dprintk(1, + KERN_DEBUG "vpx3216b i2c reg 0x%02x data 0x%02x\n", + *data, vpx3220_read(client, *data)); + data += 2; + len -= 2; + } +} + +static int +vpx3220_command (struct i2c_client *client, + unsigned int cmd, + void *arg) +{ + struct vpx3220 *decoder = i2c_get_clientdata(client); + + switch (cmd) { + case 0: + { + vpx3220_write_block(client, init_common, + sizeof(init_common)); + vpx3220_write_fp_block(client, init_fp, + sizeof(init_fp) >> 1); + switch (decoder->norm) { + + case VIDEO_MODE_NTSC: + vpx3220_write_fp_block(client, init_ntsc, + sizeof(init_ntsc) >> 1); + break; + + case VIDEO_MODE_PAL: + vpx3220_write_fp_block(client, init_pal, + sizeof(init_pal) >> 1); + break; + case VIDEO_MODE_SECAM: + vpx3220_write_fp_block(client, init_secam, + sizeof(init_secam) >> 1); + break; + default: + vpx3220_write_fp_block(client, init_pal, + sizeof(init_pal) >> 1); + break; + } + } + break; + + case DECODER_DUMP: + { + vpx3220_dump_i2c(client); + } + break; + + case DECODER_GET_CAPABILITIES: + { + struct video_decoder_capability *cap = arg; + + dprintk(1, KERN_DEBUG "%s: DECODER_GET_CAPABILITIES\n", + I2C_NAME(client)); + + cap->flags = VIDEO_DECODER_PAL | + VIDEO_DECODER_NTSC | + VIDEO_DECODER_SECAM | + VIDEO_DECODER_AUTO | + VIDEO_DECODER_CCIR; + cap->inputs = 3; + cap->outputs = 1; + } + break; + + case DECODER_GET_STATUS: + { + int res = 0, status; + + dprintk(1, KERN_INFO "%s: DECODER_GET_STATUS\n", + I2C_NAME(client)); + + status = vpx3220_fp_read(client, 0x0f3); + + dprintk(1, KERN_INFO "%s: status: 0x%04x\n", I2C_NAME(client), + status); + + if (status < 0) + return status; + + if ((status & 0x20) == 0) { + res |= DECODER_STATUS_GOOD | DECODER_STATUS_COLOR; + + switch (status & 0x18) { + + case 0x00: + case 0x10: + case 0x14: + case 0x18: + res |= DECODER_STATUS_PAL; + break; + + case 0x08: + res |= DECODER_STATUS_SECAM; + break; + + case 0x04: + case 0x0c: + case 0x1c: + res |= DECODER_STATUS_NTSC; + break; + } + } + + *(int *) arg = res; + } + break; + + case DECODER_SET_NORM: + { + int *iarg = arg, data; + + dprintk(1, KERN_DEBUG "%s: DECODER_SET_NORM %d\n", + I2C_NAME(client), *iarg); + switch (*iarg) { + + case VIDEO_MODE_NTSC: + vpx3220_write_fp_block(client, init_ntsc, + sizeof(init_ntsc) >> 1); + dprintk(1, KERN_INFO "%s: norm switched to NTSC\n", + I2C_NAME(client)); + break; + + case VIDEO_MODE_PAL: + vpx3220_write_fp_block(client, init_pal, + sizeof(init_pal) >> 1); + dprintk(1, KERN_INFO "%s: norm switched to PAL\n", + I2C_NAME(client)); + break; + + case VIDEO_MODE_SECAM: + vpx3220_write_fp_block(client, init_secam, + sizeof(init_secam) >> 1); + dprintk(1, KERN_INFO "%s: norm switched to SECAM\n", + I2C_NAME(client)); + break; + + case VIDEO_MODE_AUTO: + /* FIXME This is only preliminary support */ + data = vpx3220_fp_read(client, 0xf2) & 0x20; + vpx3220_fp_write(client, 0xf2, 0x00c0 | data); + dprintk(1, KERN_INFO "%s: norm switched to Auto\n", + I2C_NAME(client)); + break; + + default: + return -EINVAL; + + } + decoder->norm = *iarg; + } + break; + + case DECODER_SET_INPUT: + { + int *iarg = arg, data; + + /* RJ: *iarg = 0: ST8 (PCTV) input + *iarg = 1: COMPOSITE input + *iarg = 2: SVHS input */ + + const int input[3][2] = { + {0x0c, 0}, + {0x0d, 0}, + {0x0e, 1} + }; + + if (*iarg < 0 || *iarg > 2) + return -EINVAL; + + dprintk(1, KERN_INFO "%s: input switched to %s\n", + I2C_NAME(client), inputs[*iarg]); + + vpx3220_write(client, 0x33, input[*iarg][0]); + + data = vpx3220_fp_read(client, 0xf2) & ~(0x0020); + if (data < 0) + return data; + /* 0x0010 is required to latch the setting */ + vpx3220_fp_write(client, 0xf2, + data | (input[*iarg][1] << 5) | 0x0010); + + udelay(10); + } + break; + + case DECODER_SET_OUTPUT: + { + int *iarg = arg; + + /* not much choice of outputs */ + if (*iarg != 0) { + return -EINVAL; + } + } + break; + + case DECODER_ENABLE_OUTPUT: + { + int *iarg = arg; + + dprintk(1, KERN_DEBUG "%s: DECODER_ENABLE_OUTPUT %d\n", + I2C_NAME(client), *iarg); + + vpx3220_write(client, 0xf2, (*iarg ? 0x1b : 0x00)); + } + break; + + case DECODER_SET_PICTURE: + { + struct video_picture *pic = arg; + + if (decoder->bright != pic->brightness) { + /* We want -128 to 128 we get 0-65535 */ + decoder->bright = pic->brightness; + vpx3220_write(client, 0xe6, + (decoder->bright - 32768) >> 8); + } + if (decoder->contrast != pic->contrast) { + /* We want 0 to 64 we get 0-65535 */ + /* Bit 7 and 8 is for noise shaping */ + decoder->contrast = pic->contrast; + vpx3220_write(client, 0xe7, + (decoder->contrast >> 10) + 192); + } + if (decoder->sat != pic->colour) { + /* We want 0 to 4096 we get 0-65535 */ + decoder->sat = pic->colour; + vpx3220_fp_write(client, 0xa0, + decoder->sat >> 4); + } + if (decoder->hue != pic->hue) { + /* We want -512 to 512 we get 0-65535 */ + decoder->hue = pic->hue; + vpx3220_fp_write(client, 0x1c, + ((decoder->hue - 32768) >> 6) & 0xFFF); + } + } + break; + + default: + return -EINVAL; + } + + return 0; +} + +static int +vpx3220_init_client (struct i2c_client *client) +{ + vpx3220_write_block(client, init_common, sizeof(init_common)); + vpx3220_write_fp_block(client, init_fp, sizeof(init_fp) >> 1); + /* Default to PAL */ + vpx3220_write_fp_block(client, init_pal, sizeof(init_pal) >> 1); + + return 0; +} + +/* ----------------------------------------------------------------------- + * Client managment code + */ + +/* + * Generic i2c probe + * concerning the addresses: i2c wants 7 bit (without the r/w bit), so '>>1' + */ +static unsigned short normal_i2c[] = + { I2C_VPX3220 >> 1, (I2C_VPX3220 >> 1) + 4, + I2C_CLIENT_END +}; +static unsigned short normal_i2c_range[] = { I2C_CLIENT_END }; + +static unsigned short probe[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short probe_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short ignore_range[2] = { I2C_CLIENT_END, I2C_CLIENT_END }; +static unsigned short force[2] = { I2C_CLIENT_END , I2C_CLIENT_END }; + +static struct i2c_client_address_data addr_data = { + .normal_i2c = normal_i2c, + .normal_i2c_range = normal_i2c_range, + .probe = probe, + .probe_range = probe_range, + .ignore = ignore, + .ignore_range = ignore_range, + .force = force +}; + +static struct i2c_driver vpx3220_i2c_driver; + +static int +vpx3220_detach_client (struct i2c_client *client) +{ + struct vpx3220 *decoder = i2c_get_clientdata(client); + int err; + + err = i2c_detach_client(client); + if (err) { + return err; + } + + kfree(decoder); + kfree(client); + + return 0; +} + +static int +vpx3220_detect_client (struct i2c_adapter *adapter, + int address, + int kind) +{ + int err; + struct i2c_client *client; + struct vpx3220 *decoder; + + dprintk(1, VPX3220_DEBUG "%s\n", __func__); + + /* Check if the adapter supports the needed features */ + if (!i2c_check_functionality + (adapter, I2C_FUNC_SMBUS_BYTE_DATA | I2C_FUNC_SMBUS_WORD_DATA)) + return 0; + + client = kmalloc(sizeof(struct i2c_client), GFP_KERNEL); + if (client == NULL) { + return -ENOMEM; + } + + memset(client, 0, sizeof(struct i2c_client)); + + client->addr = address; + client->adapter = adapter; + client->driver = &vpx3220_i2c_driver; + client->flags = I2C_CLIENT_ALLOW_USE; + + /* Check for manufacture ID and part number */ + if (kind < 0) { + u8 id; + u16 pn; + + id = vpx3220_read(client, 0x00); + if (id != 0xec) { + dprintk(1, + KERN_INFO + "vpx3220_attach: Wrong manufacturer ID (0x%02x)\n", + id); + kfree(client); + return 0; + } + + pn = (vpx3220_read(client, 0x02) << 8) + + vpx3220_read(client, 0x01); + switch (pn) { + case 0x4680: + strlcpy(I2C_NAME(client), "vpx3220a", + sizeof(I2C_NAME(client))); + break; + case 0x4260: + strlcpy(I2C_NAME(client), "vpx3216b", + sizeof(I2C_NAME(client))); + break; + case 0x4280: + strlcpy(I2C_NAME(client), "vpx3214c", + sizeof(I2C_NAME(client))); + break; + default: + dprintk(1, + KERN_INFO + "%s: Wrong part number (0x%04x)\n", + __func__, pn); + kfree(client); + return 0; + } + } else { + strlcpy(I2C_NAME(client), "forced vpx32xx", + sizeof(I2C_NAME(client))); + } + + decoder = kmalloc(sizeof(struct vpx3220), GFP_KERNEL); + if (decoder == NULL) { + kfree(client); + return -ENOMEM; + } + memset(decoder, 0, sizeof(struct vpx3220)); + decoder->norm = VIDEO_MODE_PAL; + decoder->input = 0; + decoder->enable = 1; + decoder->bright = 32768; + decoder->contrast = 32768; + decoder->hue = 32768; + decoder->sat = 32768; + i2c_set_clientdata(client, decoder); + + err = i2c_attach_client(client); + if (err) { + kfree(client); + kfree(decoder); + return err; + } + + dprintk(1, KERN_INFO "%s: vpx32xx client found at address 0x%02x\n", + I2C_NAME(client), client->addr << 1); + + vpx3220_init_client(client); + + return 0; +} + +static int +vpx3220_attach_adapter (struct i2c_adapter *adapter) +{ + int ret; + + ret = i2c_probe(adapter, &addr_data, &vpx3220_detect_client); + dprintk(1, VPX3220_DEBUG "%s: i2c_probe returned %d\n", + __func__, ret); + return ret; +} + +/* ----------------------------------------------------------------------- + * Driver initialization and cleanup code + */ + +static struct i2c_driver vpx3220_i2c_driver = { + .owner = THIS_MODULE, + .name = "vpx3220", + + .id = I2C_DRIVERID_VPX3220, + .flags = I2C_DF_NOTIFY, + + .attach_adapter = vpx3220_attach_adapter, + .detach_client = vpx3220_detach_client, + .command = vpx3220_command, +}; + +static int __init +vpx3220_init (void) +{ + return i2c_add_driver(&vpx3220_i2c_driver); +} + +static void __exit +vpx3220_cleanup (void) +{ + i2c_del_driver(&vpx3220_i2c_driver); +} + +module_init(vpx3220_init); +module_exit(vpx3220_cleanup); + +MODULE_DESCRIPTION("vpx3220a/vpx3216b/vpx3214c video encoder driver"); +MODULE_AUTHOR("Laurent Pinchart"); +MODULE_LICENSE("GPL"); |