From f380e1d2c9a1ff82a89ec68850ce53094359000e Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Thu, 15 Nov 2007 08:43:53 -0300 Subject: [PATCH] V4L/DVB (6593): Fix scode table loading Xceive 2028/3028 has a concept of scode/dcode. Scode is a table of 16 values (each with 12 bytes i2c sequence). Dcode is the entry of Scode table that should be used, given a certain frequency. The idea is that, depending on what frequency is selected, and according with a country-based (or standard-based?) table, the Xceive should be "hacked" to fine-tune that specific frequency. By default, Scode=0 is used, for undefined frequencies. Also, Scode=0 seems to be the most used value. This patch adds the capability of selecting a scode. However, extra work will be needed to allow auto-selecting the proper scode, for a given set of frequencies. I'm not sure what would be the proper way for implementing the dcode selection. Signed-off-by: Mauro Carvalho Chehab --- drivers/media/video/tuner-xc2028.c | 98 ++++++++++++++++++++++++++++++-------- 1 file changed, 77 insertions(+), 21 deletions(-) diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c index ac0c9c3cde98..e046c21be0b9 100644 --- a/drivers/media/video/tuner-xc2028.c +++ b/drivers/media/video/tuner-xc2028.c @@ -116,6 +116,8 @@ void dump_firm_type(unsigned int type) { if (type & BASE) printk("BASE "); + if (type & INIT1) + printk("INIT1 "); if (type & F8MHZ) printk("F8MHZ "); if (type & MTS) @@ -201,7 +203,7 @@ static int load_all_firmwares(struct dvb_frontend *fe) tuner_info("%s called\n", __FUNCTION__); - tuner_info("Loading firmware %s\n", priv->ctrl.fname); + tuner_info("Reading firmware %s\n", priv->ctrl.fname); rc = request_firmware(&fw, priv->ctrl.fname, priv->dev); if (rc < 0) { if (rc == -ENOENT) @@ -325,12 +327,11 @@ done: return rc; } -static int load_firmware(struct dvb_frontend *fe, unsigned int type, - v4l2_std_id * id) +static int seek_firmware(struct dvb_frontend *fe, unsigned int type, + v4l2_std_id *id) { struct xc2028_data *priv = fe->tuner_priv; - int i, rc; - unsigned char *p, *endp, buf[priv->max_len]; + int i; tuner_info("%s called\n", __FUNCTION__); @@ -339,7 +340,7 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type, return -EINVAL; } - if ((type == 0) && (*id == 0)) + if (((type & ~SCODE) == 0) && (*id == 0)) *id = V4L2_STD_PAL; /* Seek for exact match */ @@ -356,21 +357,40 @@ static int load_firmware(struct dvb_frontend *fe, unsigned int type, /*FIXME: Would make sense to seek for type "hint" match ? */ - tuner_info("Can't find firmware for type=%x, id=%lx\n", type, - (long int)*id); - return -EINVAL; + i = -EINVAL; + goto ret; found: *id = priv->firm[i].id; - tuner_info("Found firmware for type=%x, id=%lx\n", type, (long int)*id); - p = priv->firm[i].ptr; +ret: + tuner_info("%s firmware for type=", (i < 0)? "Can't find": "Found"); + dump_firm_type(type); + printk("(%x), id %08lx.\n", type, (unsigned 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->max_len]; + + tuner_info("%s called\n", __FUNCTION__); + + pos = seek_firmware(fe, type, id); + if (pos < 0) + return pos; + + p = priv->firm[pos].ptr; if (!p) { printk(KERN_ERR PREFIX "Firmware pointer were freed!"); return -EINVAL; } - endp = p + priv->firm[i].size; + endp = p + priv->firm[pos].size; while (p < endp) { __u16 size; @@ -435,6 +455,42 @@ found: return 0; } +static int load_scode(struct dvb_frontend *fe, unsigned int type, + v4l2_std_id *id, int scode) +{ + struct xc2028_data *priv = fe->tuner_priv; + int pos, rc; + unsigned char *p; + + tuner_info("%s called\n", __FUNCTION__); + + pos = seek_firmware(fe, type, id); + if (pos < 0) + return pos; + + p = priv->firm[pos].ptr; + + if (!p) { + printk(KERN_ERR PREFIX "Firmware pointer were freed!"); + return -EINVAL; + } + + if ((priv->firm[pos].size != 12 * 16) || (scode >= 16)) + return -EINVAL; + + if (priv->version < 0x0202) { + send_seq(priv, {0x20, 0x00, 0x00, 0x00}); + } else { + send_seq(priv, {0xa0, 0x00, 0x00, 0x00}); + } + + i2c_send(rc, priv, p + 12 * scode, 12); + + send_seq(priv, {0x00, 0x8c}); + + return 0; +} + static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode, v4l2_std_id std, fe_bandwidth_t bandwidth) { @@ -527,8 +583,8 @@ static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode, } /* Load INIT1, if needed */ - tuner_info("Trying to load init1 firmware\n"); - type0 = BASE | INIT1 | priv->ctrl.type; + tuner_info("Load init1 firmware, if exists\n"); + type0 = BASE | INIT1; if (priv->ctrl.type == XC2028_FIRM_MTS) type0 |= MTS; @@ -541,9 +597,9 @@ static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode, if (priv->ctrl.type == XC2028_FIRM_MTS) type |= MTS; - tuner_info("firmware standard to load: %08lx\n", (unsigned long)std); + tuner_info("Firmware standard to load: %08lx\n", (unsigned long)std); if (priv->firm_type & std) { - tuner_info("no need to load a std-specific firmware.\n"); + tuner_info("Std-specific firmware already loaded.\n"); return 0; } @@ -551,11 +607,11 @@ static int check_firmware(struct dvb_frontend *fe, enum tuner_mode new_mode, if (rc < 0) return rc; - /* Load SCODE firmware, if needed */ - tuner_info("Trying to load scode firmware\n"); - type0 = SCODE | priv->ctrl.type; - if (priv->ctrl.type == XC2028_FIRM_MTS) - type0 |= MTS; + /* Load SCODE firmware, if exists */ + tuner_info("Trying to load scode 0\n"); + type |= SCODE; + + rc = load_scode(fe, type, &std, 0); version = xc2028_get_reg(priv, 0x0004); hwmodel = xc2028_get_reg(priv, 0x0008); -- 2.11.0