diff options
Diffstat (limited to 'drivers/media/video/tuner-xc2028.c')
| -rw-r--r-- | drivers/media/video/tuner-xc2028.c | 1227 |
1 files changed, 0 insertions, 1227 deletions
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c deleted file mode 100644 index 9e9003cffc7f..000000000000 --- a/drivers/media/video/tuner-xc2028.c +++ /dev/null @@ -1,1227 +0,0 @@ -/* tuner-xc2028 - * - * Copyright (c) 2007-2008 Mauro Carvalho Chehab (mchehab@infradead.org) - * - * Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com) - * - frontend interface - * - * This code is placed under the terms of the GNU General Public License v2 - */ - -#include <linux/i2c.h> -#include <asm/div64.h> -#include <linux/firmware.h> -#include <linux/videodev2.h> -#include <linux/delay.h> -#include <media/tuner.h> -#include <linux/mutex.h> -#include "tuner-i2c.h" -#include "tuner-xc2028.h" -#include "tuner-xc2028-types.h" - -#include <linux/dvb/frontend.h> -#include "dvb_frontend.h" - - -static int debug; -module_param(debug, int, 0644); -MODULE_PARM_DESC(debug, "enable verbose debug messages"); - -static char audio_std[8]; -module_param_string(audio_std, audio_std, sizeof(audio_std), 0); -MODULE_PARM_DESC(audio_std, - "Audio standard. XC3028 audio decoder explicitly " - "needs to know what audio\n" - "standard is needed for some video standards with audio A2 or NICAM.\n" - "The valid values are:\n" - "A2\n" - "A2/A\n" - "A2/B\n" - "NICAM\n" - "NICAM/A\n" - "NICAM/B\n"); - -static char firmware_name[FIRMWARE_NAME_MAX]; -module_param_string(firmware_name, firmware_name, sizeof(firmware_name), 0); -MODULE_PARM_DESC(firmware_name, "Firmware file name. Allows overriding the " - "default firmware name\n"); - -static LIST_HEAD(xc2028_list); -static DEFINE_MUTEX(xc2028_list_mutex); - -/* struct for storing firmware table */ -struct firmware_description { - unsigned int type; - v4l2_std_id id; - __u16 int_freq; - unsigned char *ptr; - unsigned int size; -}; - -struct firmware_properties { - unsigned int type; - v4l2_std_id id; - v4l2_std_id std_req; - __u16 int_freq; - unsigned int scode_table; - int scode_nr; -}; - -struct xc2028_data { - struct list_head xc2028_list; - struct tuner_i2c_props i2c_props; - int (*tuner_callback) (void *dev, - int command, int arg); - void *video_dev; - int count; - __u32 frequency; - - struct firmware_description *firm; - int firm_size; - __u16 firm_version; - - __u16 hwmodel; - __u16 hwvers; - - struct xc2028_ctrl ctrl; - - struct firmware_properties cur_fw; - - struct mutex lock; -}; - -#define i2c_send(priv, buf, size) ({ \ - int _rc; \ - _rc = tuner_i2c_xfer_send(&priv->i2c_props, buf, size); \ - if (size != _rc) \ - tuner_info("i2c output error: rc = %d (should be %d)\n",\ - _rc, (int)size); \ - _rc; \ -}) - -#define i2c_rcv(priv, buf, size) ({ \ - int _rc; \ - _rc = tuner_i2c_xfer_recv(&priv->i2c_props, buf, size); \ - if (size != _rc) \ - tuner_err("i2c input error: rc = %d (should be %d)\n", \ - _rc, (int)size); \ - _rc; \ -}) - -#define i2c_send_recv(priv, obuf, osize, ibuf, isize) ({ \ - int _rc; \ - _rc = tuner_i2c_xfer_send_recv(&priv->i2c_props, obuf, osize, \ - ibuf, isize); \ - if (isize != _rc) \ - tuner_err("i2c input error: rc = %d (should be %d)\n", \ - _rc, (int)isize); \ - _rc; \ -}) - -#define send_seq(priv, data...) ({ \ - static u8 _val[] = data; \ - int _rc; \ - if (sizeof(_val) != \ - (_rc = tuner_i2c_xfer_send(&priv->i2c_props, \ - _val, sizeof(_val)))) { \ - tuner_err("Error on line %d: %d\n", __LINE__, _rc); \ - } else \ - msleep(10); \ - _rc; \ -}) - -static int xc2028_get_reg(struct xc2028_data *priv, u16 reg, u16 *val) -{ - unsigned char buf[2]; - unsigned char ibuf[2]; - - tuner_dbg("%s %04x called\n", __func__, reg); - - buf[0] = reg >> 8; - buf[1] = (unsigned char) reg; - - if (i2c_send_recv(priv, buf, 2, ibuf, 2) != 2) - return -EIO; - - *val = (ibuf[1]) | (ibuf[0] << 8); - return 0; -} - -#define dump_firm_type(t) dump_firm_type_and_int_freq(t, 0) -static void dump_firm_type_and_int_freq(unsigned int type, u16 int_freq) -{ - if (type & BASE) - printk("BASE "); - if (type & INIT1) - printk("INIT1 "); - if (type & F8MHZ) - printk("F8MHZ "); - if (type & MTS) - printk("MTS "); - if (type & D2620) - printk("D2620 "); - if (type & D2633) - printk("D2633 "); - if (type & DTV6) - printk("DTV6 "); - if (type & QAM) - printk("QAM "); - if (type & DTV7) - printk("DTV7 "); - if (type & DTV78) - printk("DTV78 "); - if (type & DTV8) - printk("DTV8 "); - if (type & FM) - printk("FM "); - if (type & INPUT1) - printk("INPUT1 "); - if (type & LCD) - printk("LCD "); - if (type & NOGD) - printk("NOGD "); - if (type & MONO) - printk("MONO "); - if (type & ATSC) - printk("ATSC "); - if (type & IF) - printk("IF "); - if (type & LG60) - printk("LG60 "); - if (type & ATI638) - printk("ATI638 "); - if (type & OREN538) - printk("OREN538 "); - if (type & OREN36) - printk("OREN36 "); - if (type & TOYOTA388) - printk("TOYOTA388 "); - if (type & TOYOTA794) - printk("TOYOTA794 "); - if (type & DIBCOM52) - printk("DIBCOM52 "); - if (type & ZARLINK456) - printk("ZARLINK456 "); - if (type & CHINA) - printk("CHINA "); - if (type & F6MHZ) - printk("F6MHZ "); - if (type & INPUT2) - printk("INPUT2 "); - if (type & SCODE) - printk("SCODE "); - if (type & HAS_IF) - printk("HAS_IF_%d ", int_freq); -} - -static v4l2_std_id parse_audio_std_option(void) -{ - if (strcasecmp(audio_std, "A2") == 0) - return V4L2_STD_A2; - if (strcasecmp(audio_std, "A2/A") == 0) - return V4L2_STD_A2_A; - if (strcasecmp(audio_std, "A2/B") == 0) - return V4L2_STD_A2_B; - if (strcasecmp(audio_std, "NICAM") == 0) - return V4L2_STD_NICAM; - if (strcasecmp(audio_std, "NICAM/A") == 0) - return V4L2_STD_NICAM_A; - if (strcasecmp(audio_std, "NICAM/B") == 0) - return V4L2_STD_NICAM_B; - - return 0; -} - -static void free_firmware(struct xc2028_data *priv) -{ - int i; - tuner_dbg("%s called\n", __func__); - - if (!priv->firm) - return; - - for (i = 0; i < priv->firm_size; i++) - kfree(priv->firm[i].ptr); - - kfree(priv->firm); - - priv->firm = NULL; - priv->firm_size = 0; - - memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); -} - -static int load_all_firmwares(struct dvb_frontend *fe) -{ - struct xc2028_data *priv = fe->tuner_priv; - const struct firmware *fw = NULL; - unsigned char *p, *endp; - int rc = 0; - int n, n_array; - char name[33]; - char *fname; - - tuner_dbg("%s called\n", __func__); - - if (!firmware_name[0]) - fname = priv->ctrl.fname; - else - fname = firmware_name; - - tuner_dbg("Reading firmware %s\n", fname); - rc = request_firmware(&fw, fname, &priv->i2c_props.adap->dev); - if (rc < 0) { - if (rc == -ENOENT) - tuner_err("Error: firmware %s not found.\n", - fname); - else - tuner_err("Error %d while requesting firmware %s \n", - rc, fname); - - return rc; - } - p = fw->data; - endp = p + fw->size; - - if (fw->size < sizeof(name) - 1 + 2 + 2) { - tuner_err("Error: firmware file %s has invalid size!\n", - fname); - goto corrupt; - } - - memcpy(name, p, sizeof(name) - 1); - name[sizeof(name) - 1] = 0; - p += sizeof(name) - 1; - - priv->firm_version = le16_to_cpu(*(__u16 *) p); - p += 2; - - n_array = le16_to_cpu(*(__u16 *) p); - p += 2; - - tuner_info("Loading %d firmware images from %s, type: %s, ver %d.%d\n", - n_array, fname, name, - priv->firm_version >> 8, priv->firm_version & 0xff); - - priv->firm = kzalloc(sizeof(*priv->firm) * n_array, GFP_KERNEL); - if (priv->firm == NULL) { - tuner_err("Not enough memory to load firmware file.\n"); - rc = -ENOMEM; - goto err; - } - priv->firm_size = n_array; - - n = -1; - while (p < endp) { - __u32 type, size; - v4l2_std_id id; - __u16 int_freq = 0; - - n++; - if (n >= n_array) { - tuner_err("More firmware images in file than " - "were expected!\n"); - goto corrupt; - } - - /* Checks if there's enough bytes to read */ - if (p + sizeof(type) + sizeof(id) + sizeof(size) > endp) { - tuner_err("Firmware header is incomplete!\n"); - goto corrupt; - } - - type = le32_to_cpu(*(__u32 *) p); - p += sizeof(type); - - id = le64_to_cpu(*(v4l2_std_id *) p); - p += sizeof(id); - - if (type & HAS_IF) { - int_freq = le16_to_cpu(*(__u16 *) p); - p += sizeof(int_freq); - } - - size = le32_to_cpu(*(__u32 *) p); - p += sizeof(size); - - if ((!size) || (size + p > endp)) { - tuner_err("Firmware type "); - dump_firm_type(type); - printk("(%x), id %llx is corrupted " - "(size=%d, expected %d)\n", - type, (unsigned long long)id, - (unsigned)(endp - p), size); - goto corrupt; - } - - priv->firm[n].ptr = kzalloc(size, GFP_KERNEL); - if (priv->firm[n].ptr == NULL) { - tuner_err("Not enough memory to load firmware file.\n"); - rc = -ENOMEM; - goto err; - } - tuner_dbg("Reading firmware type "); - if (debug) { - dump_firm_type_and_int_freq(type, int_freq); - printk("(%x), id %llx, size=%d.\n", - type, (unsigned long long)id, size); - } - - memcpy(priv->firm[n].ptr, p, size); - priv->firm[n].type = type; - priv->firm[n].id = id; - priv->firm[n].size = size; - priv->firm[n].int_freq = int_freq; - - p += size; - } - - if (n + 1 != priv->firm_size) { - tuner_err("Firmware file is incomplete!\n"); - goto corrupt; - } - - goto done; - -corrupt: - rc = -EINVAL; - tuner_err("Error: firmware file is corrupted!\n"); - -err: - tuner_info("Releasing partially loaded firmware file.\n"); - free_firmware(priv); - -done: - release_firmware(fw); - if (rc == 0) - tuner_dbg("Firmware files loaded.\n"); - - return rc; -} - -static int seek_firmware(struct dvb_frontend *fe, unsigned int type, - v4l2_std_id *id) -{ - struct xc2028_data *priv = fe->tuner_priv; - int i, best_i = -1, best_nr_matches = 0; - unsigned int type_mask = 0; - - tuner_dbg("%s called, want type=", __func__); - if (debug) { - dump_firm_type(type); - printk("(%x), id %016llx.\n", type, (unsigned long long)*id); - } - - if (!priv->firm) { - tuner_err("Error! firmware not loaded\n"); - return -EINVAL; - } - - if (((type & ~SCODE) == 0) && (*id == 0)) - *id = V4L2_STD_PAL; - - if (type & BASE) - type_mask = BASE_TYPES; - else if (type & SCODE) { - type &= SCODE_TYPES; - type_mask = SCODE_TYPES & ~HAS_IF; - } else if (type & DTV_TYPES) - type_mask = DTV_TYPES; - else if (type & STD_SPECIFIC_TYPES) - type_mask = STD_SPECIFIC_TYPES; - - type &= type_mask; - - if (!(type & SCODE)) - type_mask = ~0; - - /* Seek for exact match */ - for (i = 0; i < priv->firm_size; i++) { - if ((type == (priv->firm[i].type & type_mask)) && - (*id == priv->firm[i].id)) - goto found; - } - - /* Seek for generic video standard match */ - for (i = 0; i < priv->firm_size; i++) { - v4l2_std_id match_mask; - int nr_matches; - - if (type != (priv->firm[i].type & type_mask)) - continue; - - match_mask = *id & priv->firm[i].id; - if (!match_mask) - continue; - - if ((*id & match_mask) == *id) - goto found; /* Supports all the requested standards */ - - nr_matches = hweight64(match_mask); - if (nr_matches > best_nr_matches) { - best_nr_matches = nr_matches; - best_i = i; - } - } - - if (best_nr_matches > 0) { - tuner_dbg("Selecting best matching firmware (%d bits) for " - "type=", best_nr_matches); - dump_firm_type(type); - printk("(%x), id %016llx:\n", type, (unsigned long long)*id); - i = best_i; - goto found; - } - - /*FIXME: Would make sense to seek for type "hint" match ? */ - - i = -ENOENT; - goto ret; - -found: - *id = priv->firm[i].id; - -ret: - tuner_dbg("%s firmware for type=", (i < 0) ? "Can't find" : "Found"); - if (debug) { - dump_firm_type(type); - printk("(%x), id %016llx.\n", type, (unsigned long long)*id); - } - return i; -} - -static int load_firmware(struct dvb_frontend *fe, unsigned int type, - v4l2_std_id *id) -{ - struct xc2028_data *priv = fe->tuner_priv; - int pos, rc; - unsigned char *p, *endp, buf[priv->ctrl.max_len]; - - tuner_dbg("%s called\n", __func__); - - pos = seek_firmware(fe, type, id); - if (pos < 0) - return pos; - - tuner_info("Loading firmware for type="); - dump_firm_type(priv->firm[pos].type); - printk("(%x), id %016llx.\n", priv->firm[pos].type, - (unsigned long long)*id); - - p = priv->firm[pos].ptr; - endp = p + priv->firm[pos].size; - - while (p < endp) { - __u16 size; - - /* Checks if there's enough bytes to read */ - if (p + sizeof(size) > endp) { - tuner_err("Firmware chunk size is wrong\n"); - return -EINVAL; - } - - size = le16_to_cpu(*(__u16 *) p); - p += sizeof(size); - - if (size == 0xffff) - return 0; - - if (!size) { - /* Special callback command received */ - rc = priv->tuner_callback(priv->video_dev, - XC2028_TUNER_RESET, 0); - if (rc < 0) { - tuner_err("Error at RESET code %d\n", - (*p) & 0x7f); - return -EINVAL; - } - continue; - } - if (size >= 0xff00) { - switch (size) { - case 0xff00: - rc = priv->tuner_callback(priv->video_dev, - XC2028_RESET_CLK, 0); - if (rc < 0) { - tuner_err("Error at RESET code %d\n", - (*p) & 0x7f); - return -EINVAL; - } - break; - default: - tuner_info("Invalid RESET code %d\n", - size & 0x7f); - return -EINVAL; - - } - continue; - } - - /* Checks for a sleep command */ - if (size & 0x8000) { - msleep(size & 0x7fff); - continue; - } - - if ((size + p > endp)) { - tuner_err("missing bytes: need %d, have %d\n", - size, (int)(endp - p)); - return -EINVAL; - } - - buf[0] = *p; - p++; - size--; - - /* Sends message chunks */ - while (size > 0) { - int len = (size < priv->ctrl.max_len - 1) ? - size : priv->ctrl.max_len - 1; - - memcpy(buf + 1, p, len); - - rc = i2c_send(priv, buf, len + 1); - if (rc < 0) { - tuner_err("%d returned from send\n", rc); - return -EINVAL; - } - - p += len; - size -= len; - } - } - return 0; -} - -static int load_scode(struct dvb_frontend *fe, unsigned int type, - v4l2_std_id *id, __u16 int_freq, int scode) -{ - struct xc2028_data *priv = fe->tuner_priv; - int pos, rc; - unsigned char *p; - - tuner_dbg("%s called\n", __func__); - - if (!int_freq) { - pos = seek_firmware(fe, type, id); - if (pos < 0) - return pos; - } else { - for (pos = 0; pos < priv->firm_size; pos++) { - if ((priv->firm[pos].int_freq == int_freq) && - (priv->firm[pos].type & HAS_IF)) - break; - } - if (pos == priv->firm_size) - return -ENOENT; - } - - p = priv->firm[pos].ptr; - - if (priv->firm[pos].type & HAS_IF) { - if (priv->firm[pos].size != 12 * 16 || scode >= 16) - return -EINVAL; - p += 12 * scode; - } else { - /* 16 SCODE entries per file; each SCODE entry is 12 bytes and - * has a 2-byte size header in the firmware format. */ - if (priv->firm[pos].size != 14 * 16 || scode >= 16 || - le16_to_cpu(*(__u16 *)(p + 14 * scode)) != 12) - return -EINVAL; - p += 14 * scode + 2; - } - - tuner_info("Loading SCODE for type="); - dump_firm_type_and_int_freq(priv->firm[pos].type, - priv->firm[pos].int_freq); - printk("(%x), id %016llx.\n", priv->firm[pos].type, - (unsigned long long)*id); - - if (priv->firm_version < 0x0202) - rc = send_seq(priv, {0x20, 0x00, 0x00, 0x00}); - else - rc = send_seq(priv, {0xa0, 0x00, 0x00, 0x00}); - if (rc < 0) - return -EIO; - - rc = i2c_send(priv, p, 12); - if (rc < 0) - return -EIO; - - rc = send_seq(priv, {0x00, 0x8c}); - if (rc < 0) - return -EIO; - - return 0; -} - -static int check_firmware(struct dvb_frontend *fe, unsigned int type, - v4l2_std_id std, __u16 int_freq) -{ - struct xc2028_data *priv = fe->tuner_priv; - struct firmware_properties new_fw; - int rc = 0, is_retry = 0; - u16 version, hwmodel; - v4l2_std_id std0; - - tuner_dbg("%s called\n", __func__); - - if (!priv->firm) { - if (!priv->ctrl.fname) { - tuner_info("xc2028/3028 firmware name not set!\n"); - return -EINVAL; - } - - rc = load_all_firmwares(fe); - if (rc < 0) - return rc; - } - - if (priv->ctrl.mts && !(type & FM)) - type |= MTS; - -retry: - new_fw.type = type; - new_fw.id = std; - new_fw.std_req = std; - new_fw.scode_table = SCODE | priv->ctrl.scode_table; - new_fw.scode_nr = 0; - new_fw.int_freq = int_freq; - - tuner_dbg("checking firmware, user requested type="); - if (debug) { - dump_firm_type(new_fw.type); - printk("(%x), id %016llx, ", new_fw.type, - (unsigned long long)new_fw.std_req); - if (!int_freq) { - printk("scode_tbl "); - dump_firm_type(priv->ctrl.scode_table); - printk("(%x), ", priv->ctrl.scode_table); - } else - printk("int_freq %d, ", new_fw.int_freq); - printk("scode_nr %d\n", new_fw.scode_nr); - } - - /* No need to reload base firmware if it matches */ - if (((BASE | new_fw.type) & BASE_TYPES) == - (priv->cur_fw.type & BASE_TYPES)) { - tuner_dbg("BASE firmware not changed.\n"); - goto skip_base; - } - - /* Updating BASE - forget about all currently loaded firmware */ - memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); - - /* Reset is needed before loading firmware */ - rc = priv->tuner_callback(priv->video_dev, - XC2028_TUNER_RESET, 0); - if (rc < 0) - goto fail; - - /* BASE firmwares are all std0 */ - std0 = 0; - rc = load_firmware(fe, BASE | new_fw.type, &std0); - if (rc < 0) { - tuner_err("Error %d while loading base firmware\n", - rc); - goto fail; - } - - /* Load INIT1, if needed */ - tuner_dbg("Load init1 firmware, if exists\n"); - - rc = load_firmware(fe, BASE | INIT1 | new_fw.type, &std0); - if (rc == -ENOENT) - rc = load_firmware(fe, (BASE | INIT1 | new_fw.type) & ~F8MHZ, - &std0); - if (rc < 0 && rc != -ENOENT) { - tuner_err("Error %d while loading init1 firmware\n", - rc); - goto fail; - } - -skip_base: - /* - * No need to reload standard specific firmware if base firmware - * was not reloaded and requested video standards have not changed. - */ - if (priv->cur_fw.type == (BASE | new_fw.type) && - priv->cur_fw.std_req == std) { - tuner_dbg("Std-specific firmware already loaded.\n"); - goto skip_std_specific; - } - - /* Reloading std-specific firmware forces a SCODE update */ - priv->cur_fw.scode_table = 0; - - rc = load_firmware(fe, new_fw.type, &new_fw.id); - if (rc == -ENOENT) - rc = load_firmware(fe, new_fw.type & ~F8MHZ, &new_fw.id); - - if (rc < 0) - goto fail; - -skip_std_specific: - if (priv->cur_fw.scode_table == new_fw.scode_table && - priv->cur_fw.scode_nr == new_fw.scode_nr) { - tuner_dbg("SCODE firmware already loaded.\n"); - goto check_device; - } - - if (new_fw.type & FM) - goto check_device; - - /* Load SCODE firmware, if exists */ - tuner_dbg("Trying to load scode %d\n", new_fw.scode_nr); - - rc = load_scode(fe, new_fw.type | new_fw.scode_table, &new_fw.id, - new_fw.int_freq, new_fw.scode_nr); - -check_device: - if (xc2028_get_reg(priv, 0x0004, &version) < 0 || - xc2028_get_reg(priv, 0x0008, &hwmodel) < 0) { - tuner_err("Unable to read tuner registers.\n"); - goto fail; - } - - tuner_dbg("Device is Xceive %d version %d.%d, " - "firmware version %d.%d\n", - hwmodel, (version & 0xf000) >> 12, (version & 0xf00) >> 8, - (version & 0xf0) >> 4, version & 0xf); - - /* Check firmware version against what we downloaded. */ - if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) { - tuner_err("Incorrect readback of firmware version.\n"); - goto fail; - } - - /* Check that the tuner hardware model remains consistent over time. */ - if (priv->hwmodel == 0 && (hwmodel == 2028 || hwmodel == 3028)) { - priv->hwmodel = hwmodel; - priv->hwvers = version & 0xff00; - } else if (priv->hwmodel == 0 || priv->hwmodel != hwmodel || - priv->hwvers != (version & 0xff00)) { - tuner_err("Read invalid device hardware information - tuner " - "hung?\n"); - goto fail; - } - - memcpy(&priv->cur_fw, &new_fw, sizeof(priv->cur_fw)); - - /* - * By setting BASE in cur_fw.type only after successfully loading all - * firmwares, we can: - * 1. Identify that BASE firmware with type=0 has been loaded; - * 2. Tell whether BASE firmware was just changed the next time through. - */ - priv->cur_fw.type |= BASE; - - return 0; - -fail: - memset(&priv->cur_fw, 0, sizeof(priv->cur_fw)); - if (!is_retry) { - msleep(50); - is_retry = 1; - tuner_dbg("Retrying firmware load\n"); - goto retry; - } - - if (rc == -ENOENT) - rc = -EINVAL; - return rc; -} - -static int xc2028_signal(struct dvb_frontend *fe, u16 *strength) -{ - struct xc2028_data *priv = fe->tuner_priv; - u16 frq_lock, signal = 0; - int rc; - - tuner_dbg("%s called\n", __func__); - - mutex_lock(&priv->lock); - - /* Sync Lock Indicator */ - rc = xc2028_get_reg(priv, 0x0002, &frq_lock); - if (rc < 0) - goto ret; - - /* Frequency is locked */ - if (frq_lock == 1) - signal = 32768; - - /* Get SNR of the video signal */ - rc = xc2028_get_reg(priv, 0x0040, &signal); - if (rc < 0) - goto ret; - - /* Use both frq_lock and signal to generate the result */ - signal = signal || ((signal & 0x07) << 12); - -ret: - mutex_unlock(&priv->lock); - - *strength = signal; - - tuner_dbg("signal strength is %d\n", signal); - - return rc; -} - -#define DIV 15625 - -static int generic_set_freq(struct dvb_frontend *fe, u32 freq /* in HZ */, - enum tuner_mode new_mode, - unsigned int type, - v4l2_std_id std, - u16 int_freq) -{ - struct xc2028_data *priv = fe->tuner_priv; - int rc = -EINVAL; - unsigned char buf[4]; - u32 div, offset = 0; - - tuner_dbg("%s called\n", __func__); - - mutex_lock(&priv->lock); - - tuner_dbg("should set frequency %d kHz\n", freq / 1000); - - if (check_firmware(fe, type, std, int_freq) < 0) - goto ret; - - /* On some cases xc2028 can disable video output, if - * very weak signals are received. By sending a soft - * reset, this is re-enabled. So, it is better to always - * send a soft reset before changing channels, to be sure - * that xc2028 will be in a safe state. - * Maybe this might also be needed for DTV. - */ - if (new_mode == T_ANALOG_TV) { - rc = send_seq(priv, {0x00, 0x00}); - } else if (priv->cur_fw.type & ATSC) { - offset = 1750000; - } else { - offset = 2750000; - /* - * We must adjust the offset by 500kHz in two cases in order - * to correctly center the IF output: - * 1) When the ZARLINK456 or DIBCOM52 tables were explicitly - * selected and a 7MHz channel is tuned; - * 2) When tuning a VHF channel with DTV78 firmware. - */ - if (((priv->cur_fw.type & DTV7) && - (priv->cur_fw.scode_table & (ZARLINK456 | DIBCOM52))) || - ((priv->cur_fw.type & DTV78) && freq < 470000000)) - offset -= 500000; - } - - div = (freq - offset + DIV / 2) / DIV; - - /* CMD= Set frequency */ - if (priv->firm_version < 0x0202) - rc = send_seq(priv, {0x00, 0x02, 0x00, 0x00}); - else - rc = send_seq(priv, {0x80, 0x02, 0x00, 0x00}); - if (rc < 0) - goto ret; - - /* Return code shouldn't be checked. - The reset CLK is needed only with tm6000. - Driver should work fine even if this fails. - */ - priv->tuner_callback(priv->video_dev, XC2028_RESET_CLK, 1); - - msleep(10); - - buf[0] = 0xff & (div >> 24); - buf[1] = 0xff & (div >> 16); - buf[2] = 0xff & (div >> 8); - buf[3] = 0xff & (div); - - rc = i2c_send(priv, buf, sizeof(buf)); - if (rc < 0) - goto ret; - msleep(100); - - priv->frequency = freq; - - tuner_dbg("divisor= %02x %02x %02x %02x (freq=%d.%03d)\n", - buf[0], buf[1], buf[2], buf[3], - freq / 1000000, (freq % 1000000) / 1000); - - rc = 0; - -ret: - mutex_unlock(&priv->lock); - - return rc; -} - -static int xc2028_set_analog_freq(struct dvb_frontend *fe, - struct analog_parameters *p) -{ - struct xc2028_data *priv = fe->tuner_priv; - unsigned int type=0; - - tuner_dbg("%s called\n", __func__); - - if (p->mode == V4L2_TUNER_RADIO) { - type |= FM; - if (priv->ctrl.input1) - type |= INPUT1; - return generic_set_freq(fe, (625l * p->frequency) / 10, - T_ANALOG_TV, type, 0, 0); - } - - /* if std is not defined, choose one */ - if (!p->std) - p->std = V4L2_STD_MN; - - /* PAL/M, PAL/N, PAL/Nc and NTSC variants should use 6MHz firmware */ - if (!(p->std & V4L2_STD_MN)) - type |= F8MHZ; - - /* Add audio hack to std mask */ - p->std |= parse_audio_std_option(); - - return generic_set_freq(fe, 62500l * p->frequency, - T_ANALOG_TV, type, p->std, 0); -} - -static int xc2028_set_params(struct dvb_frontend *fe, - struct dvb_frontend_parameters *p) -{ - struct xc2028_data *priv = fe->tuner_priv; - unsigned int type=0; - fe_bandwidth_t bw = BANDWIDTH_8_MHZ; - u16 demod = 0; - - tuner_dbg("%s called\n", __func__); - - if (priv->ctrl.d2633) - type |= D2633; - else - type |= D2620; - - switch(fe->ops.info.type) { - case FE_OFDM: - bw = p->u.ofdm.bandwidth; - break; - case FE_QAM: - tuner_info("WARN: There are some reports that " - "QAM 6 MHz doesn't work.\n" - "If this works for you, please report by " - "e-mail to: v4l-dvb-maintainer@linuxtv.org\n"); - bw = BANDWIDTH_6_MHZ; - type |= QAM; - break; - case FE_ATSC: - bw = BANDWIDTH_6_MHZ; - /* The only ATSC firmware (at least on v2.7) is D2633, - so overrides ctrl->d2633 */ - type |= ATSC| D2633; - type &= ~D2620; - break; - /* DVB-S is not supported */ - default: - return -EINVAL; - } - - switch (bw) { - case BANDWIDTH_8_MHZ: - if (p->frequency < 470000000) - priv->ctrl.vhfbw7 = 0; - else - priv->ctrl.uhfbw8 = 1; - type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV8; - type |= F8MHZ; - break; - case BANDWIDTH_7_MHZ: - if (p->frequency < 470000000) - priv->ctrl.vhfbw7 = 1; - else - priv->ctrl.uhfbw8 = 0; - type |= (priv->ctrl.vhfbw7 && priv->ctrl.uhfbw8) ? DTV78 : DTV7; - type |= F8MHZ; - break; - case BANDWIDTH_6_MHZ: - type |= DTV6; - priv->ctrl.vhfbw7 = 0; - priv->ctrl.uhfbw8 = 0; - break; - default: - tuner_err("error: bandwidth not supported.\n"); - }; - - /* All S-code tables need a 200kHz shift */ - if (priv->ctrl.demod) - demod = priv->ctrl.demod + 200; - - return generic_set_freq(fe, p->frequency, - T_DIGITAL_TV, type, 0, demod); -} - - -static int xc2028_dvb_release(struct dvb_frontend *fe) -{ - struct xc2028_data *priv = fe->tuner_priv; - - tuner_dbg("%s called\n", __func__); - - mutex_lock(&xc2028_list_mutex); - - priv->count--; - - if (!priv->count) { - list_del(&priv->xc2028_list); - - kfree(priv->ctrl.fname); - - free_firmware(priv); - kfree(priv); - fe->tuner_priv = NULL; - } - - mutex_unlock(&xc2028_list_mutex); - - return 0; -} - -static int xc2028_get_frequency(struct dvb_frontend *fe, u32 *frequency) -{ - struct xc2028_data *priv = fe->tuner_priv; - - tuner_dbg("%s called\n", __func__); - - *frequency = priv->frequency; - - return 0; -} - -static int xc2028_set_config(struct dvb_frontend *fe, void *priv_cfg) -{ - struct xc2028_data *priv = fe->tuner_priv; - struct xc2028_ctrl *p = priv_cfg; - int rc = 0; - - tuner_dbg("%s called\n", __func__); - - mutex_lock(&priv->lock); - - memcpy(&priv->ctrl, p, sizeof(priv->ctrl)); - if (priv->ctrl.max_len < 9) - priv->ctrl.max_len = 13; - - if (p->fname) { - if (priv->ctrl.fname && strcmp(p->fname, priv->ctrl.fname)) { - kfree(priv->ctrl.fname); - free_firmware(priv); - } - - priv->ctrl.fname = kstrdup(p->fname, GFP_KERNEL); - if (priv->ctrl.fname == NULL) - rc = -ENOMEM; - } - - mutex_unlock(&priv->lock); - - return rc; -} - -static const struct dvb_tuner_ops xc2028_dvb_tuner_ops = { - .info = { - .name = "Xceive XC3028", - .frequency_min = 42000000, - .frequency_max = 864000000, - .frequency_step = 50000, - }, - - .set_config = xc2028_set_config, - .set_analog_params = xc2028_set_analog_freq, - .release = xc2028_dvb_release, - .get_frequency = xc2028_get_frequency, - .get_rf_strength = xc2028_signal, - .set_params = xc2028_set_params, -}; - -struct dvb_frontend *xc2028_attach(struct dvb_frontend *fe, - struct xc2028_config *cfg) -{ - struct xc2028_data *priv; - void *video_dev; - - if (debug) - printk(KERN_DEBUG "xc2028: Xcv2028/3028 init called!\n"); - - if (NULL == cfg) - return NULL; - - if (!fe) { - printk(KERN_ERR "xc2028: No frontend!\n"); - return NULL; - } - - video_dev = cfg->i2c_adap->algo_data; - - if (debug) - printk(KERN_DEBUG "xc2028: video_dev =%p\n", video_dev); - - mutex_lock(&xc2028_list_mutex); - - list_for_each_entry(priv, &xc2028_list, xc2028_list) { - if (&priv->i2c_props.adap->dev == &cfg->i2c_adap->dev) { - video_dev = NULL; - if (debug) - printk(KERN_DEBUG "xc2028: reusing device\n"); - - break; - } - } - - if (video_dev) { - priv = kzalloc(sizeof(*priv), GFP_KERNEL); - if (priv == NULL) { - mutex_unlock(&xc2028_list_mutex); - return NULL; - } - - priv->i2c_props.addr = cfg->i2c_addr; - priv->i2c_props.adap = cfg->i2c_adap; - priv->i2c_props.name = "xc2028"; - - priv->video_dev = video_dev; - priv->tuner_callback = cfg->callback; - priv->ctrl.max_len = 13; - - mutex_init(&priv->lock); - - list_add_tail(&priv->xc2028_list, &xc2028_list); - } - - fe->tuner_priv = priv; - priv->count++; - - if (debug) - printk(KERN_DEBUG "xc2028: usage count is %i\n", priv->count); - - memcpy(&fe->ops.tuner_ops, &xc2028_dvb_tuner_ops, - sizeof(xc2028_dvb_tuner_ops)); - - tuner_info("type set to %s\n", "XCeive xc2028/xc3028 tuner"); - - if (cfg->ctrl) - xc2028_set_config(fe, cfg->ctrl); - - mutex_unlock(&xc2028_list_mutex); - - return fe; -} - -EXPORT_SYMBOL(xc2028_attach); - -MODULE_DESCRIPTION("Xceive xc2028/xc3028 tuner driver"); -MODULE_AUTHOR("Michel Ludwig <michel.ludwig@gmail.com>"); -MODULE_AUTHOR("Mauro Carvalho Chehab <mchehab@infradead.org>"); -MODULE_LICENSE("GPL"); |