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>
diff --git a/drivers/media/video/tuner-xc2028.c b/drivers/media/video/tuner-xc2028.c
index 4b33143..2bb6954 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 @@
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 @@
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 @@
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 @@
{
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 @@
#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 @@
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)
+{
+ 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 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 @@
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 @@
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);
+