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Diffstat (limited to 'drivers/media/dvb/firewire/firedtv-avc.c')
-rw-r--r--drivers/media/dvb/firewire/firedtv-avc.c1315
1 files changed, 1315 insertions, 0 deletions
diff --git a/drivers/media/dvb/firewire/firedtv-avc.c b/drivers/media/dvb/firewire/firedtv-avc.c
new file mode 100644
index 000000000000..b55d9ccaf33e
--- /dev/null
+++ b/drivers/media/dvb/firewire/firedtv-avc.c
@@ -0,0 +1,1315 @@
+/*
+ * FireDTV driver (formerly known as FireSAT)
+ *
+ * Copyright (C) 2004 Andreas Monitzer <andy@monitzer.com>
+ * Copyright (C) 2008 Ben Backx <ben@bbackx.com>
+ * Copyright (C) 2008 Henrik Kurelid <henrik@kurelid.se>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ */
+
+#include <linux/bug.h>
+#include <linux/crc32.h>
+#include <linux/delay.h>
+#include <linux/device.h>
+#include <linux/jiffies.h>
+#include <linux/kernel.h>
+#include <linux/moduleparam.h>
+#include <linux/mutex.h>
+#include <linux/string.h>
+#include <linux/stringify.h>
+#include <linux/wait.h>
+#include <linux/workqueue.h>
+
+#include "firedtv.h"
+
+#define FCP_COMMAND_REGISTER 0xfffff0000b00ULL
+
+#define AVC_CTYPE_CONTROL 0x0
+#define AVC_CTYPE_STATUS 0x1
+#define AVC_CTYPE_NOTIFY 0x3
+
+#define AVC_RESPONSE_ACCEPTED 0x9
+#define AVC_RESPONSE_STABLE 0xc
+#define AVC_RESPONSE_CHANGED 0xd
+#define AVC_RESPONSE_INTERIM 0xf
+
+#define AVC_SUBUNIT_TYPE_TUNER (0x05 << 3)
+#define AVC_SUBUNIT_TYPE_UNIT (0x1f << 3)
+
+#define AVC_OPCODE_VENDOR 0x00
+#define AVC_OPCODE_READ_DESCRIPTOR 0x09
+#define AVC_OPCODE_DSIT 0xc8
+#define AVC_OPCODE_DSD 0xcb
+
+#define DESCRIPTOR_TUNER_STATUS 0x80
+#define DESCRIPTOR_SUBUNIT_IDENTIFIER 0x00
+
+#define SFE_VENDOR_DE_COMPANYID_0 0x00 /* OUI of Digital Everywhere */
+#define SFE_VENDOR_DE_COMPANYID_1 0x12
+#define SFE_VENDOR_DE_COMPANYID_2 0x87
+
+#define SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL 0x0a
+#define SFE_VENDOR_OPCODE_LNB_CONTROL 0x52
+#define SFE_VENDOR_OPCODE_TUNE_QPSK 0x58 /* for DVB-S */
+
+#define SFE_VENDOR_OPCODE_GET_FIRMWARE_VERSION 0x00
+#define SFE_VENDOR_OPCODE_HOST2CA 0x56
+#define SFE_VENDOR_OPCODE_CA2HOST 0x57
+#define SFE_VENDOR_OPCODE_CISTATUS 0x59
+#define SFE_VENDOR_OPCODE_TUNE_QPSK2 0x60 /* for DVB-S2 */
+
+#define SFE_VENDOR_TAG_CA_RESET 0x00
+#define SFE_VENDOR_TAG_CA_APPLICATION_INFO 0x01
+#define SFE_VENDOR_TAG_CA_PMT 0x02
+#define SFE_VENDOR_TAG_CA_DATE_TIME 0x04
+#define SFE_VENDOR_TAG_CA_MMI 0x05
+#define SFE_VENDOR_TAG_CA_ENTER_MENU 0x07
+
+#define EN50221_LIST_MANAGEMENT_ONLY 0x03
+#define EN50221_TAG_APP_INFO 0x9f8021
+#define EN50221_TAG_CA_INFO 0x9f8031
+
+struct avc_command_frame {
+ int length;
+ u8 ctype;
+ u8 subunit;
+ u8 opcode;
+ u8 operand[509];
+};
+
+struct avc_response_frame {
+ int length;
+ u8 response;
+ u8 subunit;
+ u8 opcode;
+ u8 operand[509];
+};
+
+#define AVC_DEBUG_FCP_SUBACTIONS 1
+#define AVC_DEBUG_FCP_PAYLOADS 2
+
+static int avc_debug;
+module_param_named(debug, avc_debug, int, 0644);
+MODULE_PARM_DESC(debug, "Verbose logging (default = 0"
+ ", FCP subactions = " __stringify(AVC_DEBUG_FCP_SUBACTIONS)
+ ", FCP payloads = " __stringify(AVC_DEBUG_FCP_PAYLOADS)
+ ", or all = -1)");
+
+static const char *debug_fcp_ctype(unsigned int ctype)
+{
+ static const char *ctypes[] = {
+ [0x0] = "CONTROL", [0x1] = "STATUS",
+ [0x2] = "SPECIFIC INQUIRY", [0x3] = "NOTIFY",
+ [0x4] = "GENERAL INQUIRY", [0x8] = "NOT IMPLEMENTED",
+ [0x9] = "ACCEPTED", [0xa] = "REJECTED",
+ [0xb] = "IN TRANSITION", [0xc] = "IMPLEMENTED/STABLE",
+ [0xd] = "CHANGED", [0xf] = "INTERIM",
+ };
+ const char *ret = ctype < ARRAY_SIZE(ctypes) ? ctypes[ctype] : NULL;
+
+ return ret ? ret : "?";
+}
+
+static const char *debug_fcp_opcode(unsigned int opcode,
+ const u8 *data, size_t length)
+{
+ switch (opcode) {
+ case AVC_OPCODE_VENDOR: break;
+ case AVC_OPCODE_READ_DESCRIPTOR: return "ReadDescriptor";
+ case AVC_OPCODE_DSIT: return "DirectSelectInfo.Type";
+ case AVC_OPCODE_DSD: return "DirectSelectData";
+ default: return "?";
+ }
+
+ if (length < 7 ||
+ data[3] != SFE_VENDOR_DE_COMPANYID_0 ||
+ data[4] != SFE_VENDOR_DE_COMPANYID_1 ||
+ data[5] != SFE_VENDOR_DE_COMPANYID_2)
+ return "Vendor";
+
+ switch (data[6]) {
+ case SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL: return "RegisterRC";
+ case SFE_VENDOR_OPCODE_LNB_CONTROL: return "LNBControl";
+ case SFE_VENDOR_OPCODE_TUNE_QPSK: return "TuneQPSK";
+ case SFE_VENDOR_OPCODE_HOST2CA: return "Host2CA";
+ case SFE_VENDOR_OPCODE_CA2HOST: return "CA2Host";
+ }
+ return "Vendor";
+}
+
+static void debug_fcp(const u8 *data, size_t length)
+{
+ unsigned int subunit_type, subunit_id, op;
+ const char *prefix = data[0] > 7 ? "FCP <- " : "FCP -> ";
+
+ if (avc_debug & AVC_DEBUG_FCP_SUBACTIONS) {
+ subunit_type = data[1] >> 3;
+ subunit_id = data[1] & 7;
+ op = subunit_type == 0x1e || subunit_id == 5 ? ~0 : data[2];
+ printk(KERN_INFO "%ssu=%x.%x l=%d: %-8s - %s\n",
+ prefix, subunit_type, subunit_id, length,
+ debug_fcp_ctype(data[0]),
+ debug_fcp_opcode(op, data, length));
+ }
+
+ if (avc_debug & AVC_DEBUG_FCP_PAYLOADS)
+ print_hex_dump(KERN_INFO, prefix, DUMP_PREFIX_NONE, 16, 1,
+ data, length, false);
+}
+
+static int __avc_write(struct firedtv *fdtv,
+ const struct avc_command_frame *c, struct avc_response_frame *r)
+{
+ int err, retry;
+
+ if (r)
+ fdtv->avc_reply_received = false;
+
+ for (retry = 0; retry < 6; retry++) {
+ if (unlikely(avc_debug))
+ debug_fcp(&c->ctype, c->length);
+
+ err = fdtv->backend->write(fdtv, FCP_COMMAND_REGISTER,
+ (void *)&c->ctype, c->length);
+ if (err) {
+ fdtv->avc_reply_received = true;
+ dev_err(fdtv->device, "FCP command write failed\n");
+ return err;
+ }
+
+ if (!r)
+ return 0;
+
+ /*
+ * AV/C specs say that answers should be sent within 150 ms.
+ * Time out after 200 ms.
+ */
+ if (wait_event_timeout(fdtv->avc_wait,
+ fdtv->avc_reply_received,
+ msecs_to_jiffies(200)) != 0) {
+ r->length = fdtv->response_length;
+ memcpy(&r->response, fdtv->response, r->length);
+
+ return 0;
+ }
+ }
+ dev_err(fdtv->device, "FCP response timed out\n");
+ return -ETIMEDOUT;
+}
+
+static int avc_write(struct firedtv *fdtv,
+ const struct avc_command_frame *c, struct avc_response_frame *r)
+{
+ int ret;
+
+ if (mutex_lock_interruptible(&fdtv->avc_mutex))
+ return -EINTR;
+
+ ret = __avc_write(fdtv, c, r);
+
+ mutex_unlock(&fdtv->avc_mutex);
+ return ret;
+}
+
+int avc_recv(struct firedtv *fdtv, void *data, size_t length)
+{
+ struct avc_response_frame *r =
+ data - offsetof(struct avc_response_frame, response);
+
+ if (unlikely(avc_debug))
+ debug_fcp(data, length);
+
+ if (length >= 8 &&
+ r->operand[0] == SFE_VENDOR_DE_COMPANYID_0 &&
+ r->operand[1] == SFE_VENDOR_DE_COMPANYID_1 &&
+ r->operand[2] == SFE_VENDOR_DE_COMPANYID_2 &&
+ r->operand[3] == SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL) {
+ if (r->response == AVC_RESPONSE_CHANGED) {
+ fdtv_handle_rc(fdtv,
+ r->operand[4] << 8 | r->operand[5]);
+ schedule_work(&fdtv->remote_ctrl_work);
+ } else if (r->response != AVC_RESPONSE_INTERIM) {
+ dev_info(fdtv->device,
+ "remote control result = %d\n", r->response);
+ }
+ return 0;
+ }
+
+ if (fdtv->avc_reply_received) {
+ dev_err(fdtv->device, "out-of-order AVC response, ignored\n");
+ return -EIO;
+ }
+
+ memcpy(fdtv->response, data, length);
+ fdtv->response_length = length;
+
+ fdtv->avc_reply_received = true;
+ wake_up(&fdtv->avc_wait);
+
+ return 0;
+}
+
+/*
+ * tuning command for setting the relative LNB frequency
+ * (not supported by the AVC standard)
+ */
+static void avc_tuner_tuneqpsk(struct firedtv *fdtv,
+ struct dvb_frontend_parameters *params,
+ struct avc_command_frame *c)
+{
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_TUNE_QPSK;
+
+ c->operand[4] = (params->frequency >> 24) & 0xff;
+ c->operand[5] = (params->frequency >> 16) & 0xff;
+ c->operand[6] = (params->frequency >> 8) & 0xff;
+ c->operand[7] = params->frequency & 0xff;
+
+ c->operand[8] = ((params->u.qpsk.symbol_rate / 1000) >> 8) & 0xff;
+ c->operand[9] = (params->u.qpsk.symbol_rate / 1000) & 0xff;
+
+ switch (params->u.qpsk.fec_inner) {
+ case FEC_1_2: c->operand[10] = 0x1; break;
+ case FEC_2_3: c->operand[10] = 0x2; break;
+ case FEC_3_4: c->operand[10] = 0x3; break;
+ case FEC_5_6: c->operand[10] = 0x4; break;
+ case FEC_7_8: c->operand[10] = 0x5; break;
+ case FEC_4_5:
+ case FEC_8_9:
+ case FEC_AUTO:
+ default: c->operand[10] = 0x0;
+ }
+
+ if (fdtv->voltage == 0xff)
+ c->operand[11] = 0xff;
+ else if (fdtv->voltage == SEC_VOLTAGE_18) /* polarisation */
+ c->operand[11] = 0;
+ else
+ c->operand[11] = 1;
+
+ if (fdtv->tone == 0xff)
+ c->operand[12] = 0xff;
+ else if (fdtv->tone == SEC_TONE_ON) /* band */
+ c->operand[12] = 1;
+ else
+ c->operand[12] = 0;
+
+ if (fdtv->type == FIREDTV_DVB_S2) {
+ c->operand[13] = 0x1;
+ c->operand[14] = 0xff;
+ c->operand[15] = 0xff;
+ c->length = 20;
+ } else {
+ c->length = 16;
+ }
+}
+
+static void avc_tuner_dsd_dvb_c(struct dvb_frontend_parameters *params,
+ struct avc_command_frame *c)
+{
+ c->opcode = AVC_OPCODE_DSD;
+
+ c->operand[0] = 0; /* source plug */
+ c->operand[1] = 0xd2; /* subfunction replace */
+ c->operand[2] = 0x20; /* system id = DVB */
+ c->operand[3] = 0x00; /* antenna number */
+ c->operand[4] = 0x11; /* system_specific_multiplex selection_length */
+
+ /* multiplex_valid_flags, high byte */
+ c->operand[5] = 0 << 7 /* reserved */
+ | 0 << 6 /* Polarisation */
+ | 0 << 5 /* Orbital_Pos */
+ | 1 << 4 /* Frequency */
+ | 1 << 3 /* Symbol_Rate */
+ | 0 << 2 /* FEC_outer */
+ | (params->u.qam.fec_inner != FEC_AUTO ? 1 << 1 : 0)
+ | (params->u.qam.modulation != QAM_AUTO ? 1 << 0 : 0);
+
+ /* multiplex_valid_flags, low byte */
+ c->operand[6] = 0 << 7 /* NetworkID */
+ | 0 << 0 /* reserved */ ;
+
+ c->operand[7] = 0x00;
+ c->operand[8] = 0x00;
+ c->operand[9] = 0x00;
+ c->operand[10] = 0x00;
+
+ c->operand[11] = (((params->frequency / 4000) >> 16) & 0xff) | (2 << 6);
+ c->operand[12] = ((params->frequency / 4000) >> 8) & 0xff;
+ c->operand[13] = (params->frequency / 4000) & 0xff;
+ c->operand[14] = ((params->u.qpsk.symbol_rate / 1000) >> 12) & 0xff;
+ c->operand[15] = ((params->u.qpsk.symbol_rate / 1000) >> 4) & 0xff;
+ c->operand[16] = ((params->u.qpsk.symbol_rate / 1000) << 4) & 0xf0;
+ c->operand[17] = 0x00;
+
+ switch (params->u.qpsk.fec_inner) {
+ case FEC_1_2: c->operand[18] = 0x1; break;
+ case FEC_2_3: c->operand[18] = 0x2; break;
+ case FEC_3_4: c->operand[18] = 0x3; break;
+ case FEC_5_6: c->operand[18] = 0x4; break;
+ case FEC_7_8: c->operand[18] = 0x5; break;
+ case FEC_8_9: c->operand[18] = 0x6; break;
+ case FEC_4_5: c->operand[18] = 0x8; break;
+ case FEC_AUTO:
+ default: c->operand[18] = 0x0;
+ }
+
+ switch (params->u.qam.modulation) {
+ case QAM_16: c->operand[19] = 0x08; break;
+ case QAM_32: c->operand[19] = 0x10; break;
+ case QAM_64: c->operand[19] = 0x18; break;
+ case QAM_128: c->operand[19] = 0x20; break;
+ case QAM_256: c->operand[19] = 0x28; break;
+ case QAM_AUTO:
+ default: c->operand[19] = 0x00;
+ }
+
+ c->operand[20] = 0x00;
+ c->operand[21] = 0x00;
+ /* Nr_of_dsd_sel_specs = 0 -> no PIDs are transmitted */
+ c->operand[22] = 0x00;
+
+ c->length = 28;
+}
+
+static void avc_tuner_dsd_dvb_t(struct dvb_frontend_parameters *params,
+ struct avc_command_frame *c)
+{
+ struct dvb_ofdm_parameters *ofdm = &params->u.ofdm;
+
+ c->opcode = AVC_OPCODE_DSD;
+
+ c->operand[0] = 0; /* source plug */
+ c->operand[1] = 0xd2; /* subfunction replace */
+ c->operand[2] = 0x20; /* system id = DVB */
+ c->operand[3] = 0x00; /* antenna number */
+ c->operand[4] = 0x0c; /* system_specific_multiplex selection_length */
+
+ /* multiplex_valid_flags, high byte */
+ c->operand[5] =
+ 0 << 7 /* reserved */
+ | 1 << 6 /* CenterFrequency */
+ | (ofdm->bandwidth != BANDWIDTH_AUTO ? 1 << 5 : 0)
+ | (ofdm->constellation != QAM_AUTO ? 1 << 4 : 0)
+ | (ofdm->hierarchy_information != HIERARCHY_AUTO ? 1 << 3 : 0)
+ | (ofdm->code_rate_HP != FEC_AUTO ? 1 << 2 : 0)
+ | (ofdm->code_rate_LP != FEC_AUTO ? 1 << 1 : 0)
+ | (ofdm->guard_interval != GUARD_INTERVAL_AUTO ? 1 << 0 : 0);
+
+ /* multiplex_valid_flags, low byte */
+ c->operand[6] =
+ 0 << 7 /* NetworkID */
+ | (ofdm->transmission_mode != TRANSMISSION_MODE_AUTO ? 1 << 6 : 0)
+ | 0 << 5 /* OtherFrequencyFlag */
+ | 0 << 0 /* reserved */ ;
+
+ c->operand[7] = 0x0;
+ c->operand[8] = (params->frequency / 10) >> 24;
+ c->operand[9] = ((params->frequency / 10) >> 16) & 0xff;
+ c->operand[10] = ((params->frequency / 10) >> 8) & 0xff;
+ c->operand[11] = (params->frequency / 10) & 0xff;
+
+ switch (ofdm->bandwidth) {
+ case BANDWIDTH_7_MHZ: c->operand[12] = 0x20; break;
+ case BANDWIDTH_8_MHZ:
+ case BANDWIDTH_6_MHZ: /* not defined by AVC spec */
+ case BANDWIDTH_AUTO:
+ default: c->operand[12] = 0x00;
+ }
+
+ switch (ofdm->constellation) {
+ case QAM_16: c->operand[13] = 1 << 6; break;
+ case QAM_64: c->operand[13] = 2 << 6; break;
+ case QPSK:
+ default: c->operand[13] = 0x00;
+ }
+
+ switch (ofdm->hierarchy_information) {
+ case HIERARCHY_1: c->operand[13] |= 1 << 3; break;
+ case HIERARCHY_2: c->operand[13] |= 2 << 3; break;
+ case HIERARCHY_4: c->operand[13] |= 3 << 3; break;
+ case HIERARCHY_AUTO:
+ case HIERARCHY_NONE:
+ default: break;
+ }
+
+ switch (ofdm->code_rate_HP) {
+ case FEC_2_3: c->operand[13] |= 1; break;
+ case FEC_3_4: c->operand[13] |= 2; break;
+ case FEC_5_6: c->operand[13] |= 3; break;
+ case FEC_7_8: c->operand[13] |= 4; break;
+ case FEC_1_2:
+ default: break;
+ }
+
+ switch (ofdm->code_rate_LP) {
+ case FEC_2_3: c->operand[14] = 1 << 5; break;
+ case FEC_3_4: c->operand[14] = 2 << 5; break;
+ case FEC_5_6: c->operand[14] = 3 << 5; break;
+ case FEC_7_8: c->operand[14] = 4 << 5; break;
+ case FEC_1_2:
+ default: c->operand[14] = 0x00; break;
+ }
+
+ switch (ofdm->guard_interval) {
+ case GUARD_INTERVAL_1_16: c->operand[14] |= 1 << 3; break;
+ case GUARD_INTERVAL_1_8: c->operand[14] |= 2 << 3; break;
+ case GUARD_INTERVAL_1_4: c->operand[14] |= 3 << 3; break;
+ case GUARD_INTERVAL_1_32:
+ case GUARD_INTERVAL_AUTO:
+ default: break;
+ }
+
+ switch (ofdm->transmission_mode) {
+ case TRANSMISSION_MODE_8K: c->operand[14] |= 1 << 1; break;
+ case TRANSMISSION_MODE_2K:
+ case TRANSMISSION_MODE_AUTO:
+ default: break;
+ }
+
+ c->operand[15] = 0x00; /* network_ID[0] */
+ c->operand[16] = 0x00; /* network_ID[1] */
+ /* Nr_of_dsd_sel_specs = 0 -> no PIDs are transmitted */
+ c->operand[17] = 0x00;
+
+ c->length = 24;
+}
+
+int avc_tuner_dsd(struct firedtv *fdtv,
+ struct dvb_frontend_parameters *params)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+
+ switch (fdtv->type) {
+ case FIREDTV_DVB_S:
+ case FIREDTV_DVB_S2: avc_tuner_tuneqpsk(fdtv, params, c); break;
+ case FIREDTV_DVB_C: avc_tuner_dsd_dvb_c(params, c); break;
+ case FIREDTV_DVB_T: avc_tuner_dsd_dvb_t(params, c); break;
+ default:
+ BUG();
+ }
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ msleep(500);
+#if 0
+ /* FIXME: */
+ /* u8 *status was an out-parameter of avc_tuner_dsd, unused by caller */
+ if (status)
+ *status = r->operand[2];
+#endif
+ return 0;
+}
+
+int avc_tuner_set_pids(struct firedtv *fdtv, unsigned char pidc, u16 pid[])
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+ int pos, k;
+
+ if (pidc > 16 && pidc != 0xff)
+ return -EINVAL;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_DSD;
+
+ c->operand[0] = 0; /* source plug */
+ c->operand[1] = 0xd2; /* subfunction replace */
+ c->operand[2] = 0x20; /* system id = DVB */
+ c->operand[3] = 0x00; /* antenna number */
+ c->operand[4] = 0x00; /* system_specific_multiplex selection_length */
+ c->operand[5] = pidc; /* Nr_of_dsd_sel_specs */
+
+ pos = 6;
+ if (pidc != 0xff)
+ for (k = 0; k < pidc; k++) {
+ c->operand[pos++] = 0x13; /* flowfunction relay */
+ c->operand[pos++] = 0x80; /* dsd_sel_spec_valid_flags -> PID */
+ c->operand[pos++] = (pid[k] >> 8) & 0x1f;
+ c->operand[pos++] = pid[k] & 0xff;
+ c->operand[pos++] = 0x00; /* tableID */
+ c->operand[pos++] = 0x00; /* filter_length */
+ }
+
+ c->length = ALIGN(3 + pos, 4);
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ msleep(50);
+ return 0;
+}
+
+int avc_tuner_get_ts(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+ int sl;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_DSIT;
+
+ sl = fdtv->type == FIREDTV_DVB_T ? 0x0c : 0x11;
+
+ c->operand[0] = 0; /* source plug */
+ c->operand[1] = 0xd2; /* subfunction replace */
+ c->operand[2] = 0xff; /* status */
+ c->operand[3] = 0x20; /* system id = DVB */
+ c->operand[4] = 0x00; /* antenna number */
+ c->operand[5] = 0x0; /* system_specific_search_flags */
+ c->operand[6] = sl; /* system_specific_multiplex selection_length */
+ c->operand[7] = 0x00; /* valid_flags [0] */
+ c->operand[8] = 0x00; /* valid_flags [1] */
+ c->operand[7 + sl] = 0x00; /* nr_of_dsit_sel_specs (always 0) */
+
+ c->length = fdtv->type == FIREDTV_DVB_T ? 24 : 28;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ msleep(250);
+ return 0;
+}
+
+int avc_identify_subunit(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_READ_DESCRIPTOR;
+
+ c->operand[0] = DESCRIPTOR_SUBUNIT_IDENTIFIER;
+ c->operand[1] = 0xff;
+ c->operand[2] = 0x00;
+ c->operand[3] = 0x00; /* length highbyte */
+ c->operand[4] = 0x08; /* length lowbyte */
+ c->operand[5] = 0x00; /* offset highbyte */
+ c->operand[6] = 0x0d; /* offset lowbyte */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ if ((r->response != AVC_RESPONSE_STABLE &&
+ r->response != AVC_RESPONSE_ACCEPTED) ||
+ (r->operand[3] << 8) + r->operand[4] != 8) {
+ dev_err(fdtv->device, "cannot read subunit identifier\n");
+ return -EINVAL;
+ }
+ return 0;
+}
+
+#define SIZEOF_ANTENNA_INPUT_INFO 22
+
+int avc_tuner_status(struct firedtv *fdtv, struct firedtv_tuner_status *stat)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+ int length;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_READ_DESCRIPTOR;
+
+ c->operand[0] = DESCRIPTOR_TUNER_STATUS;
+ c->operand[1] = 0xff; /* read_result_status */
+ c->operand[2] = 0x00; /* reserved */
+ c->operand[3] = 0; /* SIZEOF_ANTENNA_INPUT_INFO >> 8; */
+ c->operand[4] = 0; /* SIZEOF_ANTENNA_INPUT_INFO & 0xff; */
+ c->operand[5] = 0x00;
+ c->operand[6] = 0x00;
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ if (r->response != AVC_RESPONSE_STABLE &&
+ r->response != AVC_RESPONSE_ACCEPTED) {
+ dev_err(fdtv->device, "cannot read tuner status\n");
+ return -EINVAL;
+ }
+
+ length = r->operand[9];
+ if (r->operand[1] != 0x10 || length != SIZEOF_ANTENNA_INPUT_INFO) {
+ dev_err(fdtv->device, "got invalid tuner status\n");
+ return -EINVAL;
+ }
+
+ stat->active_system = r->operand[10];
+ stat->searching = r->operand[11] >> 7 & 1;
+ stat->moving = r->operand[11] >> 6 & 1;
+ stat->no_rf = r->operand[11] >> 5 & 1;
+ stat->input = r->operand[12] >> 7 & 1;
+ stat->selected_antenna = r->operand[12] & 0x7f;
+ stat->ber = r->operand[13] << 24 |
+ r->operand[14] << 16 |
+ r->operand[15] << 8 |
+ r->operand[16];
+ stat->signal_strength = r->operand[17];
+ stat->raster_frequency = r->operand[18] >> 6 & 2;
+ stat->rf_frequency = (r->operand[18] & 0x3f) << 16 |
+ r->operand[19] << 8 |
+ r->operand[20];
+ stat->man_dep_info_length = r->operand[21];
+ stat->front_end_error = r->operand[22] >> 4 & 1;
+ stat->antenna_error = r->operand[22] >> 3 & 1;
+ stat->front_end_power_status = r->operand[22] >> 1 & 1;
+ stat->power_supply = r->operand[22] & 1;
+ stat->carrier_noise_ratio = r->operand[23] << 8 |
+ r->operand[24];
+ stat->power_supply_voltage = r->operand[27];
+ stat->antenna_voltage = r->operand[28];
+ stat->firewire_bus_voltage = r->operand[29];
+ stat->ca_mmi = r->operand[30] & 1;
+ stat->ca_pmt_reply = r->operand[31] >> 7 & 1;
+ stat->ca_date_time_request = r->operand[31] >> 6 & 1;
+ stat->ca_application_info = r->operand[31] >> 5 & 1;
+ stat->ca_module_present_status = r->operand[31] >> 4 & 1;
+ stat->ca_dvb_flag = r->operand[31] >> 3 & 1;
+ stat->ca_error_flag = r->operand[31] >> 2 & 1;
+ stat->ca_initialization_status = r->operand[31] >> 1 & 1;
+
+ return 0;
+}
+
+int avc_lnb_control(struct firedtv *fdtv, char voltage, char burst,
+ char conttone, char nrdiseq,
+ struct dvb_diseqc_master_cmd *diseqcmd)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+ int i, j, k;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_LNB_CONTROL;
+
+ c->operand[4] = voltage;
+ c->operand[5] = nrdiseq;
+
+ i = 6;
+
+ for (j = 0; j < nrdiseq; j++) {
+ c->operand[i++] = diseqcmd[j].msg_len;
+
+ for (k = 0; k < diseqcmd[j].msg_len; k++)
+ c->operand[i++] = diseqcmd[j].msg[k];
+ }
+
+ c->operand[i++] = burst;
+ c->operand[i++] = conttone;
+
+ c->length = ALIGN(3 + i, 4);
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ if (r->response != AVC_RESPONSE_ACCEPTED) {
+ dev_err(fdtv->device, "LNB control failed\n");
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int avc_register_remote_control(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_NOTIFY;
+ c->subunit = AVC_SUBUNIT_TYPE_UNIT | 7;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_REGISTER_REMOTE_CONTROL;
+
+ c->length = 8;
+
+ return avc_write(fdtv, c, NULL);
+}
+
+void avc_remote_ctrl_work(struct work_struct *work)
+{
+ struct firedtv *fdtv =
+ container_of(work, struct firedtv, remote_ctrl_work);
+
+ /* Should it be rescheduled in failure cases? */
+ avc_register_remote_control(fdtv);
+}
+
+#if 0 /* FIXME: unused */
+int avc_tuner_host2ca(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
+ c->operand[6] = 0; /* more/last */
+ c->operand[7] = 0; /* length */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ return 0;
+}
+#endif
+
+static int get_ca_object_pos(struct avc_response_frame *r)
+{
+ int length = 1;
+
+ /* Check length of length field */
+ if (r->operand[7] & 0x80)
+ length = (r->operand[7] & 0x7f) + 1;
+ return length + 7;
+}
+
+static int get_ca_object_length(struct avc_response_frame *r)
+{
+#if 0 /* FIXME: unused */
+ int size = 0;
+ int i;
+
+ if (r->operand[7] & 0x80)
+ for (i = 0; i < (r->operand[7] & 0x7f); i++) {
+ size <<= 8;
+ size += r->operand[8 + i];
+ }
+#endif
+ return r->operand[7];
+}
+
+int avc_ca_app_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+ int pos;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_STATUS;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ /* FIXME: check response code and validate response data */
+
+ pos = get_ca_object_pos(r);
+ app_info[0] = (EN50221_TAG_APP_INFO >> 16) & 0xff;
+ app_info[1] = (EN50221_TAG_APP_INFO >> 8) & 0xff;
+ app_info[2] = (EN50221_TAG_APP_INFO >> 0) & 0xff;
+ app_info[3] = 6 + r->operand[pos + 4];
+ app_info[4] = 0x01;
+ memcpy(&app_info[5], &r->operand[pos], 5 + r->operand[pos + 4]);
+ *len = app_info[3] + 4;
+
+ return 0;
+}
+
+int avc_ca_info(struct firedtv *fdtv, char *app_info, unsigned int *len)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+ int pos;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_STATUS;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_APPLICATION_INFO; /* ca tag */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ pos = get_ca_object_pos(r);
+ app_info[0] = (EN50221_TAG_CA_INFO >> 16) & 0xff;
+ app_info[1] = (EN50221_TAG_CA_INFO >> 8) & 0xff;
+ app_info[2] = (EN50221_TAG_CA_INFO >> 0) & 0xff;
+ app_info[3] = 2;
+ app_info[4] = r->operand[pos + 0];
+ app_info[5] = r->operand[pos + 1];
+ *len = app_info[3] + 4;
+
+ return 0;
+}
+
+int avc_ca_reset(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_RESET; /* ca tag */
+ c->operand[6] = 0; /* more/last */
+ c->operand[7] = 1; /* length */
+ c->operand[8] = 0; /* force hardware reset */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ return 0;
+}
+
+int avc_ca_pmt(struct firedtv *fdtv, char *msg, int length)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+ int list_management;
+ int program_info_length;
+ int pmt_cmd_id;
+ int read_pos;
+ int write_pos;
+ int es_info_length;
+ int crc32_csum;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_CONTROL;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ if (msg[0] != EN50221_LIST_MANAGEMENT_ONLY) {
+ dev_info(fdtv->device, "forcing list_management to ONLY\n");
+ msg[0] = EN50221_LIST_MANAGEMENT_ONLY;
+ }
+ /* We take the cmd_id from the programme level only! */
+ list_management = msg[0];
+ program_info_length = ((msg[4] & 0x0f) << 8) + msg[5];
+ if (program_info_length > 0)
+ program_info_length--; /* Remove pmt_cmd_id */
+ pmt_cmd_id = msg[6];
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_PMT; /* ca tag */
+ c->operand[6] = 0; /* more/last */
+ /* c->operand[7] = XXXprogram_info_length + 17; */ /* length */
+ c->operand[8] = list_management;
+ c->operand[9] = 0x01; /* pmt_cmd=OK_descramble */
+
+ /* TS program map table */
+
+ c->operand[10] = 0x02; /* Table id=2 */
+ c->operand[11] = 0x80; /* Section syntax + length */
+ /* c->operand[12] = XXXprogram_info_length + 12; */
+ c->operand[13] = msg[1]; /* Program number */
+ c->operand[14] = msg[2];
+ c->operand[15] = 0x01; /* Version number=0 + current/next=1 */
+ c->operand[16] = 0x00; /* Section number=0 */
+ c->operand[17] = 0x00; /* Last section number=0 */
+ c->operand[18] = 0x1f; /* PCR_PID=1FFF */
+ c->operand[19] = 0xff;
+ c->operand[20] = (program_info_length >> 8); /* Program info length */
+ c->operand[21] = (program_info_length & 0xff);
+
+ /* CA descriptors at programme level */
+ read_pos = 6;
+ write_pos = 22;
+ if (program_info_length > 0) {
+ pmt_cmd_id = msg[read_pos++];
+ if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
+ dev_err(fdtv->device,
+ "invalid pmt_cmd_id %d\n", pmt_cmd_id);
+
+ memcpy(&c->operand[write_pos], &msg[read_pos],
+ program_info_length);
+ read_pos += program_info_length;
+ write_pos += program_info_length;
+ }
+ while (read_pos < length) {
+ c->operand[write_pos++] = msg[read_pos++];
+ c->operand[write_pos++] = msg[read_pos++];
+ c->operand[write_pos++] = msg[read_pos++];
+ es_info_length =
+ ((msg[read_pos] & 0x0f) << 8) + msg[read_pos + 1];
+ read_pos += 2;
+ if (es_info_length > 0)
+ es_info_length--; /* Remove pmt_cmd_id */
+ c->operand[write_pos++] = es_info_length >> 8;
+ c->operand[write_pos++] = es_info_length & 0xff;
+ if (es_info_length > 0) {
+ pmt_cmd_id = msg[read_pos++];
+ if (pmt_cmd_id != 1 && pmt_cmd_id != 4)
+ dev_err(fdtv->device, "invalid pmt_cmd_id %d "
+ "at stream level\n", pmt_cmd_id);
+
+ memcpy(&c->operand[write_pos], &msg[read_pos],
+ es_info_length);
+ read_pos += es_info_length;
+ write_pos += es_info_length;
+ }
+ }
+
+ /* CRC */
+ c->operand[write_pos++] = 0x00;
+ c->operand[write_pos++] = 0x00;
+ c->operand[write_pos++] = 0x00;
+ c->operand[write_pos++] = 0x00;
+
+ c->operand[7] = write_pos - 8;
+ c->operand[12] = write_pos - 13;
+
+ crc32_csum = crc32_be(0, &c->operand[10], c->operand[12] - 1);
+ c->operand[write_pos - 4] = (crc32_csum >> 24) & 0xff;
+ c->operand[write_pos - 3] = (crc32_csum >> 16) & 0xff;
+ c->operand[write_pos - 2] = (crc32_csum >> 8) & 0xff;
+ c->operand[write_pos - 1] = (crc32_csum >> 0) & 0xff;
+
+ c->length = ALIGN(3 + write_pos, 4);
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ if (r->response != AVC_RESPONSE_ACCEPTED) {
+ dev_err(fdtv->device,
+ "CA PMT failed with response 0x%x\n", r->response);
+ return -EFAULT;
+ }
+
+ return 0;
+}
+
+int avc_ca_get_time_date(struct firedtv *fdtv, int *interval)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_STATUS;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_DATE_TIME; /* ca tag */
+ c->operand[6] = 0; /* more/last */
+ c->operand[7] = 0; /* length */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ /* FIXME: check response code and validate response data */
+
+ *interval = r->operand[get_ca_object_pos(r)];
+
+ return 0;
+}
+
+int avc_ca_enter_menu(struct firedtv *fdtv)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer; /* FIXME: unused */
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_STATUS;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_HOST2CA;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_ENTER_MENU;
+ c->operand[6] = 0; /* more/last */
+ c->operand[7] = 0; /* length */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ return 0;
+}
+
+int avc_ca_get_mmi(struct firedtv *fdtv, char *mmi_object, unsigned int *len)
+{
+ char buffer[sizeof(struct avc_command_frame)];
+ struct avc_command_frame *c = (void *)buffer;
+ struct avc_response_frame *r = (void *)buffer;
+
+ memset(c, 0, sizeof(*c));
+
+ c->ctype = AVC_CTYPE_STATUS;
+ c->subunit = AVC_SUBUNIT_TYPE_TUNER | fdtv->subunit;
+ c->opcode = AVC_OPCODE_VENDOR;
+
+ c->operand[0] = SFE_VENDOR_DE_COMPANYID_0;
+ c->operand[1] = SFE_VENDOR_DE_COMPANYID_1;
+ c->operand[2] = SFE_VENDOR_DE_COMPANYID_2;
+ c->operand[3] = SFE_VENDOR_OPCODE_CA2HOST;
+ c->operand[4] = 0; /* slot */
+ c->operand[5] = SFE_VENDOR_TAG_CA_MMI;
+ c->operand[6] = 0; /* more/last */
+ c->operand[7] = 0; /* length */
+
+ c->length = 12;
+
+ if (avc_write(fdtv, c, r) < 0)
+ return -EIO;
+
+ /* FIXME: check response code and validate response data */
+
+ *len = get_ca_object_length(r);
+ memcpy(mmi_object, &r->operand[get_ca_object_pos(r)], *len);
+
+ return 0;
+}
+
+#define CMP_OUTPUT_PLUG_CONTROL_REG_0 0xfffff0000904ULL
+
+static int cmp_read(struct firedtv *fdtv, void *buf, u64 addr, size_t len)
+{
+ int ret;
+
+ if (mutex_lock_interruptible(&fdtv->avc_mutex))
+ return -EINTR;
+
+ ret = fdtv->backend->read(fdtv, addr, buf, len);
+ if (ret < 0)
+ dev_err(fdtv->device, "CMP: read I/O error\n");
+
+ mutex_unlock(&fdtv->avc_mutex);
+ return ret;
+}
+
+static int cmp_lock(struct firedtv *fdtv, void *data, u64 addr, __be32 arg)
+{
+ int ret;
+
+ if (mutex_lock_interruptible(&fdtv->avc_mutex))
+ return -EINTR;
+
+ ret = fdtv->backend->lock(fdtv, addr, data, arg);
+ if (ret < 0)
+ dev_err(fdtv->device, "CMP: lock I/O error\n");
+
+ mutex_unlock(&fdtv->avc_mutex);
+ return ret;
+}
+
+static inline u32 get_opcr(__be32 opcr, u32 mask, u32 shift)
+{
+ return (be32_to_cpu(opcr) >> shift) & mask;
+}
+
+static inline void set_opcr(__be32 *opcr, u32 value, u32 mask, u32 shift)
+{
+ *opcr &= ~cpu_to_be32(mask << shift);
+ *opcr |= cpu_to_be32((value & mask) << shift);
+}
+
+#define get_opcr_online(v) get_opcr((v), 0x1, 31)
+#define get_opcr_p2p_connections(v) get_opcr((v), 0x3f, 24)
+#define get_opcr_channel(v) get_opcr((v), 0x3f, 16)
+
+#define set_opcr_p2p_connections(p, v) set_opcr((p), (v), 0x3f, 24)
+#define set_opcr_channel(p, v) set_opcr((p), (v), 0x3f, 16)
+#define set_opcr_data_rate(p, v) set_opcr((p), (v), 0x3, 14)
+#define set_opcr_overhead_id(p, v) set_opcr((p), (v), 0xf, 10)
+
+int cmp_establish_pp_connection(struct firedtv *fdtv, int plug, int channel)
+{
+ __be32 old_opcr, opcr;
+ u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
+ int attempts = 0;
+ int ret;
+
+ ret = cmp_read(fdtv, &opcr, opcr_address, 4);
+ if (ret < 0)
+ return ret;
+
+repeat:
+ if (!get_opcr_online(opcr)) {
+ dev_err(fdtv->device, "CMP: output offline\n");
+ return -EBUSY;
+ }
+
+ old_opcr = opcr;
+
+ if (get_opcr_p2p_connections(opcr)) {
+ if (get_opcr_channel(opcr) != channel) {
+ dev_err(fdtv->device, "CMP: cannot change channel\n");
+ return -EBUSY;
+ }
+ dev_info(fdtv->device, "CMP: overlaying connection\n");
+
+ /* We don't allocate isochronous resources. */
+ } else {
+ set_opcr_channel(&opcr, channel);
+ set_opcr_data_rate(&opcr, 2); /* S400 */
+
+ /* FIXME: this is for the worst case - optimize */
+ set_opcr_overhead_id(&opcr, 0);
+
+ /*
+ * FIXME: allocate isochronous channel and bandwidth at IRM
+ * fdtv->backend->alloc_resources(fdtv, channels_mask, bw);
+ */
+ }
+
+ set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) + 1);
+
+ ret = cmp_lock(fdtv, &opcr, opcr_address, old_opcr);
+ if (ret < 0)
+ return ret;
+
+ if (old_opcr != opcr) {
+ /*
+ * FIXME: if old_opcr.P2P_Connections > 0,
+ * deallocate isochronous channel and bandwidth at IRM
+ * if (...)
+ * fdtv->backend->dealloc_resources(fdtv, channel, bw);
+ */
+
+ if (++attempts < 6) /* arbitrary limit */
+ goto repeat;
+ return -EBUSY;
+ }
+
+ return 0;
+}
+
+void cmp_break_pp_connection(struct firedtv *fdtv, int plug, int channel)
+{
+ __be32 old_opcr, opcr;
+ u64 opcr_address = CMP_OUTPUT_PLUG_CONTROL_REG_0 + (plug << 2);
+ int attempts = 0;
+
+ if (cmp_read(fdtv, &opcr, opcr_address, 4) < 0)
+ return;
+
+repeat:
+ if (!get_opcr_online(opcr) || !get_opcr_p2p_connections(opcr) ||
+ get_opcr_channel(opcr) != channel) {
+ dev_err(fdtv->device, "CMP: no connection to break\n");
+ return;
+ }
+
+ old_opcr = opcr;
+ set_opcr_p2p_connections(&opcr, get_opcr_p2p_connections(opcr) - 1);
+
+ if (cmp_lock(fdtv, &opcr, opcr_address, old_opcr) < 0)
+ return;
+
+ if (old_opcr != opcr) {
+ /*
+ * FIXME: if old_opcr.P2P_Connections == 1, i.e. we were last
+ * owner, deallocate isochronous channel and bandwidth at IRM
+ * if (...)
+ * fdtv->backend->dealloc_resources(fdtv, channel, bw);
+ */
+
+ if (++attempts < 6) /* arbitrary limit */
+ goto repeat;
+ }
+}
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