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>hifive-unleashed-5.1
Michel Ludwig
Mauro Carvalho Chehab
parent
c2622e5f8e
commit
701672eb73
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@ -1,6 +1,8 @@
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/* tuner-xc2028
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*
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* Copyright (c) 2007 Mauro Carvalho Chehab (mchehab@infradead.org)
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* Copyright (c) 2007 Michel Ludwig (michel.ludwig@gmail.com)
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* - frontend interface
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* This code is placed under the terms of the GNU General Public License v2
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*/
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@ -9,19 +11,38 @@
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#include <linux/firmware.h>
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#include <linux/videodev.h>
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#include <linux/delay.h>
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#include <media/tuner.h>
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#include "tuner-driver.h"
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#include "tuner-xc2028.h"
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#include <linux/dvb/frontend.h>
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#include "dvb_frontend.h"
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/* digital TV standards */
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#define V4L2_STD_DTV_6MHZ ((v4l2_std_id)0x04000000)
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#define V4L2_STD_DTV_7MHZ ((v4l2_std_id)0x08000000)
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#define V4L2_STD_DTV_8MHZ ((v4l2_std_id)0x10000000)
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/* Firmwares used on tm5600/tm6000 + xc2028/xc3028 */
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static const char *firmware_6M = "tm6000_xc3028_DTV_6M.fw";
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static const char *firmware_8M = "tm6000_xc3028_78M.fw";
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// static const char *firmware_78M = "tm6000_xc3028_78M.fw";
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static const char *firmware_7M = "tm6000_xc3028_7M.fw";
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static const char *firmware_8M = "tm6000_xc3028_8M.fw";
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static const char *firmware_B = "tm6000_xc3028_B_PAL.fw";
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static const char *firmware_DK = "tm6000_xc3028_DK_PAL_MTS.fw";
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static const char *firmware_MN = "tm6000_xc3028_MN_BTSC.fw";
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static const char *firmware_INIT0 = "tm6000_xc3028_INIT0.fw";
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static const char *firmware_8MHZ_INIT0 = "tm6000_xc3028_8MHZ_INIT0.fw";
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struct xc2028_data {
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v4l2_std_id firm_type; /* video stds supported by current firmware */
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int bandwidth; /* Firmware bandwidth: 6M, 7M or 8M */
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int need_load_generic; /* The generic firmware were loaded? */
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v4l2_std_id firm_type; /* video stds supported
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by current firmware */
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fe_bandwidth_t bandwidth; /* Firmware bandwidth:
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6M, 7M or 8M */
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int need_load_generic; /* The generic firmware
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were loaded? */
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enum tuner_mode mode;
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struct i2c_client *i2c_client;
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};
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#define i2c_send(rc,c,buf,size) \
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@ -80,7 +101,7 @@ static int load_firmware (struct i2c_client *c, const char *name)
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int len=0, rc=0;
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static const char firmware_ver[] = "tm6000/xcv v1";
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tuner_info("Loading firmware %s\n", name);
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tuner_info("xc2028: Loading firmware %s\n", name);
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rc = request_firmware(&fw, name, &c->dev);
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if (rc < 0) {
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tuner_info("Error %d while requesting firmware\n", rc);
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@ -154,24 +175,39 @@ err:
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return rc;
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}
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static int check_firmware(struct i2c_client *c)
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static int check_firmware(struct i2c_client *c, enum tuner_mode new_mode,
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fe_bandwidth_t bandwidth)
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{
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int rc, version;
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struct tuner *t = i2c_get_clientdata(c);
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struct xc2028_data *xc2028 = t->priv;
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const char *name;
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int change_digital_bandwidth;
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if (!t->tuner_callback) {
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printk(KERN_ERR "xc2028: need tuner_callback to load firmware\n");
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return -EINVAL;
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}
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printk(KERN_INFO "xc2028: I am in mode %u and I should switch to mode %i\n",
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xc2028->mode, new_mode);
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/* first of all, determine whether we have switched the mode */
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if(new_mode != xc2028->mode) {
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xc2028->mode = new_mode;
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xc2028->need_load_generic = 1;
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}
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change_digital_bandwidth = (xc2028->mode == T_DIGITAL_TV
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&& bandwidth != xc2028->bandwidth) ? 1 : 0;
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tuner_info("xc2028: old bandwidth %u, new bandwidth %u\n", xc2028->bandwidth,
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bandwidth);
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if (xc2028->need_load_generic) {
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if (xc2028->bandwidth==6)
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name = firmware_6M;
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name = firmware_INIT0;
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else
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name = firmware_8M;
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name = firmware_8MHZ_INIT0;
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/* Reset is needed before loading firmware */
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rc = t->tuner_callback(c->adapter->algo_data,
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XC2028_TUNER_RESET, 0);
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@ -184,37 +220,54 @@ static int check_firmware(struct i2c_client *c)
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xc2028->need_load_generic=0;
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xc2028->firm_type=0;
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if(xc2028->mode == T_DIGITAL_TV) {
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change_digital_bandwidth=1;
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}
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}
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tuner_info("xc2028: I should change bandwidth %u\n",
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change_digital_bandwidth);
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if (change_digital_bandwidth) {
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switch(bandwidth) {
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case BANDWIDTH_8_MHZ:
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t->std = V4L2_STD_DTV_8MHZ;
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break;
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case BANDWIDTH_7_MHZ:
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t->std = V4L2_STD_DTV_7MHZ;
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break;
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case BANDWIDTH_6_MHZ:
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t->std = V4L2_STD_DTV_6MHZ;
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break;
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default:
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tuner_info("error: bandwidth not supported.\n");
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};
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xc2028->bandwidth = bandwidth;
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}
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if (xc2028->firm_type & t->std)
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return 0;
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send_seq (c, {0x12, 0x39});
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send_seq (c, {0x0c, 0x80, 0xf0, 0xf7, 0x3e, 0x75, 0xc1, 0x8a, 0xe4});
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send_seq (c, {0x0c, 0x02, 0x00});
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send_seq (c, {0x05, 0x0f, 0xee, 0xaa, 0x5f, 0xea, 0x90});
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send_seq (c, {0x06, 0x00, 0x0a, 0x4d, 0x8c, 0xf2, 0xd8, 0xcf, 0x30});
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send_seq (c, {0x06, 0x79, 0x9f});
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send_seq (c, {0x0b, 0x0d, 0xa4, 0x6c});
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send_seq (c, {0x0a, 0x01, 0x67, 0x24, 0x40, 0x08, 0xc3, 0x20, 0x10});
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send_seq (c, {0x0a, 0x64, 0x3c, 0xfa, 0xf7, 0xe1, 0x0c, 0x2c});
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send_seq (c, {0x09, 0x0b});
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send_seq (c, {0x10, 0x13});
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send_seq (c, {0x16, 0x12});
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send_seq (c, {0x1f, 0x02});
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send_seq (c, {0x21, 0x02});
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send_seq (c, {0x01, 0x02});
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send_seq (c, {0x2b, 0x10});
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send_seq (c, {0x02, 0x02});
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send_seq (c, {0x02, 0x03});
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send_seq (c, {0x00, 0x8c});
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if (t->std & V4L2_STD_MN)
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name=firmware_MN;
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else if (t->std & V4L2_STD_DTV_6MHZ)
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name=firmware_6M;
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else if (t->std & V4L2_STD_DTV_7MHZ)
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name=firmware_7M;
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else if (t->std & V4L2_STD_DTV_8MHZ)
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name=firmware_8M;
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else if (t->std & V4L2_STD_PAL_B)
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name=firmware_B;
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else
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name=firmware_DK;
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rc = load_firmware(c,name);
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tuner_info("xc2028: loading firmware named %s.\n", name);
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rc = load_firmware(c, name);
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if (rc<0)
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return rc;
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@ -231,8 +284,7 @@ static int xc2028_signal(struct i2c_client *c)
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{
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int lock, signal;
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if (check_firmware(c)<0)
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return 0;
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printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__);
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lock = xc2028_get_reg(c, 0x2);
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if (lock<=0)
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@ -250,16 +302,37 @@ static int xc2028_signal(struct i2c_client *c)
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#define DIV 15625
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static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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static void generic_set_tv_freq(struct i2c_client *c, u32 freq /* in Hz */,
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enum tuner_mode new_mode, fe_bandwidth_t bandwidth)
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{
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int rc;
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unsigned char buf[5];
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struct tuner *t = i2c_get_clientdata(c);
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unsigned long div = (freq*62500l+DIV/2)/DIV;
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u32 div, offset = 0;
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if (check_firmware(c)<0)
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printk("xc3028: should set frequency %d kHz)\n", freq / 1000);
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if (check_firmware(c, new_mode, bandwidth)<0)
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return;
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if(new_mode == T_DIGITAL_TV) {
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switch(bandwidth) {
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case BANDWIDTH_8_MHZ:
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offset = 2750000;
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break;
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case BANDWIDTH_7_MHZ:
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offset = 2750000;
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break;
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case BANDWIDTH_6_MHZ:
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default:
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printk(KERN_ERR "xc2028: bandwidth not implemented!\n");
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}
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}
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div = (freq - offset + DIV/2)/DIV;
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/* Reset GPIO 1 */
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if (t->tuner_callback) {
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rc = t->tuner_callback( c->adapter->algo_data,
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@ -281,6 +354,7 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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msleep(10);
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// send_seq(c, {0x00, 0x00, 0x10, 0xd0, 0x00});
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// msleep(100);
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buf[0]= 0xff & (div>>24);
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buf[1]= 0xff & (div>>16);
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buf[2]= 0xff & (div>>8);
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@ -299,6 +373,14 @@ static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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}
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static void set_tv_freq(struct i2c_client *c, unsigned int freq)
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{
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printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__);
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generic_set_tv_freq(c, freq * 62500l, T_ANALOG_TV,
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BANDWIDTH_8_MHZ /* unimportant */);
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}
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static void xc2028_release(struct i2c_client *c)
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{
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struct tuner *t = i2c_get_clientdata(c);
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@ -324,6 +406,8 @@ int xc2028_tuner_init(struct i2c_client *c)
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int prd_id = xc2028_get_reg(c, 0x8);
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struct xc2028_data *xc2028;
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tuner_info("Xcv2028/3028 init called!\n");
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if (init) {
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printk (KERN_ERR "Module already initialized!\n");
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return 0;
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@ -335,12 +419,9 @@ int xc2028_tuner_init(struct i2c_client *c)
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return -ENOMEM;
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t->priv = xc2028;
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#ifdef HACK
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xc2028->firm_type=1;
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xc2028->bandwidth=6;
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#endif
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xc2028->bandwidth=6;
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xc2028->bandwidth=BANDWIDTH_6_MHZ;
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xc2028->need_load_generic=1;
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xc2028->mode = T_UNINITIALIZED;
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/* FIXME: Check where t->priv will be freed */
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@ -360,3 +441,69 @@ int xc2028_tuner_init(struct i2c_client *c)
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return 0;
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}
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static int xc3028_set_params(struct dvb_frontend *fe,
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struct dvb_frontend_parameters *p)
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{
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struct i2c_client *c = fe->tuner_priv;
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printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__);
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generic_set_tv_freq(c, p->frequency, T_DIGITAL_TV,
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p->u.ofdm.bandwidth);
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return 0;
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}
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static int xc3028_dvb_release(struct dvb_frontend *fe)
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{
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printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__);
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fe->tuner_priv = NULL;
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return 0;
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}
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static int xc3028_dvb_init(struct dvb_frontend *fe)
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{
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printk(KERN_INFO "xc2028: %s called\n", __FUNCTION__);
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return 0;
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}
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static const struct dvb_tuner_ops xc3028_dvb_tuner_ops = {
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.info = {
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.name = "Xceive XC3028",
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.frequency_min = 42000000,
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.frequency_max = 864000000,
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.frequency_step = 50000,
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},
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.release = xc3028_dvb_release,
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.init = xc3028_dvb_init,
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// int (*sleep)(struct dvb_frontend *fe);
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/** This is for simple PLLs - set all parameters in one go. */
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.set_params = xc3028_set_params,
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/** This is support for demods like the mt352 - fills out the supplied buffer with what to write. */
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// int (*calc_regs)(struct dvb_frontend *fe, struct dvb_frontend_parameters *p, u8 *buf, int buf_len);
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// int (*get_frequency)(struct dvb_frontend *fe, u32 *frequency);
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// int (*get_bandwidth)(struct dvb_frontend *fe, u32 *bandwidth);
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// int (*get_status)(struct dvb_frontend *fe, u32 *status);
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};
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int xc2028_attach(struct i2c_client *c, struct dvb_frontend *fe)
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{
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fe->tuner_priv = c;
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memcpy(&fe->ops.tuner_ops, &xc3028_dvb_tuner_ops, sizeof(fe->ops.tuner_ops));
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return 0;
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}
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EXPORT_SYMBOL(xc2028_attach);
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@ -7,3 +7,8 @@
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/* xc2028 commands for callback */
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#define XC2028_TUNER_RESET 0
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#define XC2028_RESET_CLK 1
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struct dvb_frontend;
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struct i2c_client;
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int xc2028_attach(struct i2c_client *c, struct dvb_frontend *fe);
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