diff options
author | Michel Ludwig <michel.ludwig@gmail.com> | 2007-07-18 10:29:10 -0300 |
---|---|---|
committer | Mauro Carvalho Chehab <mchehab@infradead.org> | 2008-01-25 19:01:03 -0200 |
commit | 701672eb7387390bff43f0c979026dd317836626 (patch) | |
tree | 8b4023f5b5b8c14aabee2e753302c0ccfd01a21a /drivers/media/video/tuner-xc2028.c | |
parent | c2622e5f8ec0c53794fa33488477f07250c3e452 (diff) |
V4L/DVB (6425): Add experimental DVB frontend tuner interface to xc2028/3028
Signed-off-by: Michel Ludwig <michel.ludwig@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
Diffstat (limited to 'drivers/media/video/tuner-xc2028.c')
-rw-r--r-- | drivers/media/video/tuner-xc2028.c | 225 |
1 files changed, 186 insertions, 39 deletions
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c index 4b33143788d..2bb695490ab 100644 --- a/drivers/media/video/tuner-xc2028.c +++ b/drivers/media/video/tuner-xc2028.c @@ -1,6 +1,8 @@ /* tuner-xc2028 * * Copyright (c) 2007 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 */ @@ -9,19 +11,38 @@ #include <linux/firmware.h> #include <linux/videodev.h> #include <linux/delay.h> +#include <media/tuner.h> #include "tuner-driver.h" #include "tuner-xc2028.h" +#include <linux/dvb/frontend.h> +#include "dvb_frontend.h" + +/* digital TV standards */ +#define V4L2_STD_DTV_6MHZ ((v4l2_std_id)0x04000000) +#define V4L2_STD_DTV_7MHZ ((v4l2_std_id)0x08000000) +#define V4L2_STD_DTV_8MHZ ((v4l2_std_id)0x10000000) + /* Firmwares used on tm5600/tm6000 + xc2028/xc3028 */ static const char *firmware_6M = "tm6000_xc3028_DTV_6M.fw"; -static const char *firmware_8M = "tm6000_xc3028_78M.fw"; +// static const char *firmware_78M = "tm6000_xc3028_78M.fw"; +static const char *firmware_7M = "tm6000_xc3028_7M.fw"; +static const char *firmware_8M = "tm6000_xc3028_8M.fw"; +static const char *firmware_B = "tm6000_xc3028_B_PAL.fw"; static const char *firmware_DK = "tm6000_xc3028_DK_PAL_MTS.fw"; static const char *firmware_MN = "tm6000_xc3028_MN_BTSC.fw"; +static const char *firmware_INIT0 = "tm6000_xc3028_INIT0.fw"; +static const char *firmware_8MHZ_INIT0 = "tm6000_xc3028_8MHZ_INIT0.fw"; struct xc2028_data { - v4l2_std_id firm_type; /* video stds supported by current firmware */ - int bandwidth; /* Firmware bandwidth: 6M, 7M or 8M */ - int need_load_generic; /* The generic firmware were loaded? */ + v4l2_std_id firm_type; /* video stds supported + by current firmware */ + fe_bandwidth_t bandwidth; /* Firmware bandwidth: + 6M, 7M or 8M */ + int need_load_generic; /* The generic firmware + were loaded? */ + enum tuner_mode mode; + struct i2c_client *i2c_client; }; #define i2c_send(rc,c,buf,size) \ @@ -80,7 +101,7 @@ static int load_firmware (struct i2c_client *c, const char *name) int len=0, rc=0; static const char firmware_ver[] = "tm6000/xcv v1"; - tuner_info("Loading firmware %s\n", name); + tuner_info("xc2028: Loading firmware %s\n", name); rc = request_firmware(&fw, name, &c->dev); if (rc < 0) { tuner_info("Error %d while requesting firmware\n", rc); @@ -154,24 +175,39 @@ err: return rc; } -static int check_firmware(struct i2c_client *c) +static int check_firmware(struct i2c_client *c, enum tuner_mode new_mode, + fe_bandwidth_t bandwidth) { int rc, version; struct tuner *t = i2c_get_clientdata(c); struct xc2028_data *xc2028 = t->priv; const char *name; + int change_digital_bandwidth; if (!t->tuner_callback) { printk(KERN_ERR "xc2028: need tuner_callback to load firmware\n"); return -EINVAL; } + printk(KERN_INFO "xc2028: I am in mode %u and I should switch to mode %i\n", + xc2028->mode, new_mode); + + /* first of all, determine whether we have switched the mode */ + if(new_mode != xc2028->mode) { + xc2028->mode = new_mode; + xc2028->need_load_generic = 1; + } + + change_digital_bandwidth = (xc2028->mode == T_DIGITAL_TV + && bandwidth != xc2028->bandwidth) ? 1 : 0; + tuner_info("xc2028: old bandwidth %u, new bandwidth %u\n", xc2028->bandwidth, + bandwidth); + if (xc2028->need_load_generic) { if (xc2028->bandwidth==6) - name = firmware_6M; + name = firmware_INIT0; else - name = firmware_8M; - + name = firmware_8MHZ_INIT0; /* Reset is needed before loading firmware */ rc = t->tuner_callback(c->adapter->algo_data, XC2028_TUNER_RESET, 0); @@ -184,37 +220,54 @@ static int check_firmware(struct i2c_client *c) xc2028->need_load_generic=0; xc2028->firm_type=0; + if(xc2028->mode == T_DIGITAL_TV) { + change_digital_bandwidth=1; + } + } + + tuner_info("xc2028: I should change bandwidth %u\n", + change_digital_bandwidth); + + if (change_digital_bandwidth) { + switch(bandwidth) { + case BANDWIDTH_8_MHZ: + t->std = V4L2_STD_DTV_8MHZ; + break; + + case BANDWIDTH_7_MHZ: + t->std = V4L2_STD_DTV_7MHZ; + break; + + case BANDWIDTH_6_MHZ: + t->std = V4L2_STD_DTV_6MHZ; + break; + + default: + tuner_info("error: bandwidth not supported.\n"); + }; + xc2028->bandwidth = bandwidth; } if (xc2028->firm_type & t->std) return 0; - send_seq (c, {0x12, 0x39}); - send_seq (c, {0x0c, 0x80, 0xf0, 0xf7, 0x3e, 0x75, 0xc1, 0x8a, 0xe4}); - send_seq (c, {0x0c, 0x02, 0x00}); - send_seq (c, {0x05, 0x0f, 0xee, 0xaa, 0x5f, 0xea, 0x90}); - send_seq (c, {0x06, 0x00, 0x0a, 0x4d, 0x8c, 0xf2, 0xd8, 0xcf, 0x30}); - send_seq (c, {0x06, 0x79, 0x9f}); - send_seq (c, {0x0b, 0x0d, 0xa4, 0x6c}); - send_seq (c, {0x0a, 0x01, 0x67, 0x24, 0x40, 0x08, 0xc3, 0x20, 0x10}); - send_seq (c, {0x0a, 0x64, 0x3c, 0xfa, 0xf7, 0xe1, 0x0c, 0x2c}); - send_seq (c, {0x09, 0x0b}); - send_seq (c, {0x10, 0x13}); - send_seq (c, {0x16, 0x12}); - send_seq (c, {0x1f, 0x02}); - send_seq (c, {0x21, 0x02}); - send_seq (c, {0x01, 0x02}); - send_seq (c, {0x2b, 0x10}); - send_seq (c, {0x02, 0x02}); - send_seq (c, {0x02, 0x03}); - send_seq (c, {0x00, 0x8c}); if (t->std & V4L2_STD_MN) name=firmware_MN; + else if (t->std & V4L2_STD_DTV_6MHZ) + name=firmware_6M; + else if (t->std & V4L2_STD_DTV_7MHZ) + name=firmware_7M; + else if (t->std & V4L2_STD_DTV_8MHZ) + name=firmware_8M; + else if (t->std & V4L2_STD_PAL_B) + name=firmware_B; else name=firmware_DK; - rc = load_firmware(c,name); + tuner_info("xc2028: loading firmware named %s.\n", name); + + rc = load_firmware(c, name); if (rc<0) return rc; @@ -231,8 +284,7 @@ static int xc2028_signal(struct i2c_client *c) { int lock, signal; - if (check_firmware(c)<0) - return 0; + printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__); lock = xc2028_get_reg(c, 0x2); if (lock<=0) @@ -250,16 +302,37 @@ static int xc2028_signal(struct i2c_client *c) #define DIV 15625 -static void set_tv_freq(struct i2c_client *c, unsigned int freq) +static void generic_set_tv_freq(struct i2c_client *c, u32 freq /* in Hz */, + enum tuner_mode new_mode, fe_bandwidth_t bandwidth) { int rc; unsigned char buf[5]; struct tuner *t = i2c_get_clientdata(c); - unsigned long div = (freq*62500l+DIV/2)/DIV; + u32 div, offset = 0; - if (check_firmware(c)<0) + printk("xc3028: should set frequency %d kHz)\n", freq / 1000); + + if (check_firmware(c, new_mode, bandwidth)<0) return; + if(new_mode == T_DIGITAL_TV) { + switch(bandwidth) { + case BANDWIDTH_8_MHZ: + offset = 2750000; + break; + + case BANDWIDTH_7_MHZ: + offset = 2750000; + break; + + case BANDWIDTH_6_MHZ: + default: + printk(KERN_ERR "xc2028: bandwidth not implemented!\n"); + } + } + + div = (freq - offset + DIV/2)/DIV; + /* Reset GPIO 1 */ if (t->tuner_callback) { rc = t->tuner_callback( c->adapter->algo_data, @@ -281,6 +354,7 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq) msleep(10); // send_seq(c, {0x00, 0x00, 0x10, 0xd0, 0x00}); // msleep(100); + buf[0]= 0xff & (div>>24); buf[1]= 0xff & (div>>16); buf[2]= 0xff & (div>>8); @@ -299,6 +373,14 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq) } +static void set_tv_freq(struct i2c_client *c, unsigned int freq) +{ + printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__); + + generic_set_tv_freq(c, freq * 62500l, T_ANALOG_TV, + BANDWIDTH_8_MHZ /* unimportant */); +} + static void xc2028_release(struct i2c_client *c) { struct tuner *t = i2c_get_clientdata(c); @@ -324,6 +406,8 @@ int xc2028_tuner_init(struct i2c_client *c) int prd_id = xc2028_get_reg(c, 0x8); struct xc2028_data *xc2028; + tuner_info("Xcv2028/3028 init called!\n"); + if (init) { printk (KERN_ERR "Module already initialized!\n"); return 0; @@ -335,12 +419,9 @@ int xc2028_tuner_init(struct i2c_client *c) return -ENOMEM; t->priv = xc2028; -#ifdef HACK - xc2028->firm_type=1; - xc2028->bandwidth=6; -#endif - xc2028->bandwidth=6; + xc2028->bandwidth=BANDWIDTH_6_MHZ; xc2028->need_load_generic=1; + xc2028->mode = T_UNINITIALIZED; /* FIXME: Check where t->priv will be freed */ @@ -360,3 +441,69 @@ int xc2028_tuner_init(struct i2c_client *c) return 0; } + +static int xc3028_set_params(struct dvb_frontend *fe, + struct dvb_frontend_parameters *p) +{ + struct i2c_client *c = fe->tuner_priv; + + printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__); + + generic_set_tv_freq(c, p->frequency, T_DIGITAL_TV, + p->u.ofdm.bandwidth); + + return 0; +} + +static int xc3028_dvb_release(struct dvb_frontend *fe) +{ + printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__); + + fe->tuner_priv = NULL; + + return 0; +} + +static int xc3028_dvb_init(struct dvb_frontend *fe) +{ + printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__); + + return 0; +} + +static const struct dvb_tuner_ops xc3028_dvb_tuner_ops = { + .info = { + .name = "Xceive XC3028", + .frequency_min = 42000000, + .frequency_max = 864000000, + .frequency_step = 50000, + }, + + .release = xc3028_dvb_release, + .init = xc3028_dvb_init, + +// int (*sleep)(struct dvb_frontend *fe); + + /** This is for simple PLLs - set all parameters in one go. */ + .set_params = xc3028_set_params, + + /** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */ +// int (*calc_regs)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len); + +// int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency); +// int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth); + +// int (*get_status)(struct dvb_frontend *fe, u32 *status); +}; + +int xc2028_attach(struct i2c_client *c, struct dvb_frontend *fe) +{ + fe->tuner_priv = c; + + memcpy(&fe->ops.tuner_ops, &xc3028_dvb_tuner_ops, sizeof(fe->ops.tuner_ops)); + + return 0; +} + +EXPORT_SYMBOL(xc2028_attach); + |