As we'll be transforming the dvb-dummy-fe driver soon into a
virtual driver, let's first copy the existing one to ddbridge
as-is, as it is needed there.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
---
.../media/pci/ddbridge/ddbridge-dummy-fe.c | 286 ++++++++++++++++++
.../media/pci/ddbridge/ddbridge-dummy-fe.h | 36 +++
2 files changed, 322 insertions(+)
create mode 100644 drivers/media/pci/ddbridge/ddbridge-dummy-fe.c
create mode 100644 drivers/media/pci/ddbridge/ddbridge-dummy-fe.h
diff --git a/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c
new file mode 100644
index 000000000000..9ff1ebaa5e04
--- /dev/null
+++ b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c
@@ -0,0 +1,286 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ * Driver for Dummy Frontend
+ *
+ * Written by Emard <emard@xxxxxxxxxxxx>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <media/dvb_frontend.h>
+#include "dvb_dummy_fe.h"
+
+
+struct dvb_dummy_fe_state {
+ struct dvb_frontend frontend;
+};
+
+
+static int dvb_dummy_fe_read_status(struct dvb_frontend *fe,
+ enum fe_status *status)
+{
+ *status = FE_HAS_SIGNAL
+ | FE_HAS_CARRIER
+ | FE_HAS_VITERBI
+ | FE_HAS_SYNC
+ | FE_HAS_LOCK;
+
+ return 0;
+}
+
+static int dvb_dummy_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+ *ber = 0;
+ return 0;
+}
+
+static int dvb_dummy_fe_read_signal_strength(struct dvb_frontend *fe,
+ u16 *strength)
+{
+ *strength = 0;
+ return 0;
+}
+
+static int dvb_dummy_fe_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+ *snr = 0;
+ return 0;
+}
+
+static int dvb_dummy_fe_read_ucblocks(struct dvb_frontend *fe, u32 *ucblocks)
+{
+ *ucblocks = 0;
+ return 0;
+}
+
+/*
+ * Should only be implemented if it actually reads something from the hardware.
+ * Also, it should check for the locks, in order to avoid report wrong data
+ * to userspace.
+ */
+static int dvb_dummy_fe_get_frontend(struct dvb_frontend *fe,
+ struct dtv_frontend_properties *p)
+{
+ return 0;
+}
+
+static int dvb_dummy_fe_set_frontend(struct dvb_frontend *fe)
+{
+ if (fe->ops.tuner_ops.set_params) {
+ fe->ops.tuner_ops.set_params(fe);
+ if (fe->ops.i2c_gate_ctrl)
+ fe->ops.i2c_gate_ctrl(fe, 0);
+ }
+
+ return 0;
+}
+
+static int dvb_dummy_fe_sleep(struct dvb_frontend *fe)
+{
+ return 0;
+}
+
+static int dvb_dummy_fe_init(struct dvb_frontend *fe)
+{
+ return 0;
+}
+
+static int dvb_dummy_fe_set_tone(struct dvb_frontend *fe,
+ enum fe_sec_tone_mode tone)
+{
+ return 0;
+}
+
+static int dvb_dummy_fe_set_voltage(struct dvb_frontend *fe,
+ enum fe_sec_voltage voltage)
+{
+ return 0;
+}
+
+static void dvb_dummy_fe_release(struct dvb_frontend *fe)
+{
+ struct dvb_dummy_fe_state *state = fe->demodulator_priv;
+
+ kfree(state);
+}
+
+static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops;
+
+struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void)
+{
+ struct dvb_dummy_fe_state *state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops,
+ &dvb_dummy_fe_ofdm_ops,
+ sizeof(struct dvb_frontend_ops));
+
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+EXPORT_SYMBOL(dvb_dummy_fe_ofdm_attach);
+
+static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops;
+
+struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
+{
+ struct dvb_dummy_fe_state *state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops,
+ &dvb_dummy_fe_qpsk_ops,
+ sizeof(struct dvb_frontend_ops));
+
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+EXPORT_SYMBOL(dvb_dummy_fe_qpsk_attach);
+
+static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops;
+
+struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
+{
+ struct dvb_dummy_fe_state *state = NULL;
+
+ /* allocate memory for the internal state */
+ state = kzalloc(sizeof(struct dvb_dummy_fe_state), GFP_KERNEL);
+ if (!state)
+ return NULL;
+
+ /* create dvb_frontend */
+ memcpy(&state->frontend.ops,
+ &dvb_dummy_fe_qam_ops,
+ sizeof(struct dvb_frontend_ops));
+
+ state->frontend.demodulator_priv = state;
+ return &state->frontend;
+}
+EXPORT_SYMBOL(dvb_dummy_fe_qam_attach);
+
+static const struct dvb_frontend_ops dvb_dummy_fe_ofdm_ops = {
+ .delsys = { SYS_DVBT },
+ .info = {
+ .name = "Dummy DVB-T",
+ .frequency_min_hz = 0,
+ .frequency_max_hz = 863250 * kHz,
+ .frequency_stepsize_hz = 62500,
+ .caps = FE_CAN_FEC_1_2 |
+ FE_CAN_FEC_2_3 |
+ FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_4_5 |
+ FE_CAN_FEC_5_6 |
+ FE_CAN_FEC_6_7 |
+ FE_CAN_FEC_7_8 |
+ FE_CAN_FEC_8_9 |
+ FE_CAN_FEC_AUTO |
+ FE_CAN_QAM_16 |
+ FE_CAN_QAM_64 |
+ FE_CAN_QAM_AUTO |
+ FE_CAN_TRANSMISSION_MODE_AUTO |
+ FE_CAN_GUARD_INTERVAL_AUTO |
+ FE_CAN_HIERARCHY_AUTO,
+ },
+
+ .release = dvb_dummy_fe_release,
+
+ .init = dvb_dummy_fe_init,
+ .sleep = dvb_dummy_fe_sleep,
+
+ .set_frontend = dvb_dummy_fe_set_frontend,
+ .get_frontend = dvb_dummy_fe_get_frontend,
+
+ .read_status = dvb_dummy_fe_read_status,
+ .read_ber = dvb_dummy_fe_read_ber,
+ .read_signal_strength = dvb_dummy_fe_read_signal_strength,
+ .read_snr = dvb_dummy_fe_read_snr,
+ .read_ucblocks = dvb_dummy_fe_read_ucblocks,
+};
+
+static const struct dvb_frontend_ops dvb_dummy_fe_qam_ops = {
+ .delsys = { SYS_DVBC_ANNEX_A },
+ .info = {
+ .name = "Dummy DVB-C",
+ .frequency_min_hz = 51 * MHz,
+ .frequency_max_hz = 858 * MHz,
+ .frequency_stepsize_hz = 62500,
+ /* symbol_rate_min: SACLK/64 == (XIN/2)/64 */
+ .symbol_rate_min = (57840000 / 2) / 64,
+ .symbol_rate_max = (57840000 / 2) / 4, /* SACLK/4 */
+ .caps = FE_CAN_QAM_16 |
+ FE_CAN_QAM_32 |
+ FE_CAN_QAM_64 |
+ FE_CAN_QAM_128 |
+ FE_CAN_QAM_256 |
+ FE_CAN_FEC_AUTO |
+ FE_CAN_INVERSION_AUTO
+ },
+
+ .release = dvb_dummy_fe_release,
+
+ .init = dvb_dummy_fe_init,
+ .sleep = dvb_dummy_fe_sleep,
+
+ .set_frontend = dvb_dummy_fe_set_frontend,
+ .get_frontend = dvb_dummy_fe_get_frontend,
+
+ .read_status = dvb_dummy_fe_read_status,
+ .read_ber = dvb_dummy_fe_read_ber,
+ .read_signal_strength = dvb_dummy_fe_read_signal_strength,
+ .read_snr = dvb_dummy_fe_read_snr,
+ .read_ucblocks = dvb_dummy_fe_read_ucblocks,
+};
+
+static const struct dvb_frontend_ops dvb_dummy_fe_qpsk_ops = {
+ .delsys = { SYS_DVBS },
+ .info = {
+ .name = "Dummy DVB-S",
+ .frequency_min_hz = 950 * MHz,
+ .frequency_max_hz = 2150 * MHz,
+ .frequency_stepsize_hz = 250 * kHz,
+ .frequency_tolerance_hz = 29500 * kHz,
+ .symbol_rate_min = 1000000,
+ .symbol_rate_max = 45000000,
+ .caps = FE_CAN_INVERSION_AUTO |
+ FE_CAN_FEC_1_2 |
+ FE_CAN_FEC_2_3 |
+ FE_CAN_FEC_3_4 |
+ FE_CAN_FEC_5_6 |
+ FE_CAN_FEC_7_8 |
+ FE_CAN_FEC_AUTO |
+ FE_CAN_QPSK
+ },
+
+ .release = dvb_dummy_fe_release,
+
+ .init = dvb_dummy_fe_init,
+ .sleep = dvb_dummy_fe_sleep,
+
+ .set_frontend = dvb_dummy_fe_set_frontend,
+ .get_frontend = dvb_dummy_fe_get_frontend,
+
+ .read_status = dvb_dummy_fe_read_status,
+ .read_ber = dvb_dummy_fe_read_ber,
+ .read_signal_strength = dvb_dummy_fe_read_signal_strength,
+ .read_snr = dvb_dummy_fe_read_snr,
+ .read_ucblocks = dvb_dummy_fe_read_ucblocks,
+
+ .set_voltage = dvb_dummy_fe_set_voltage,
+ .set_tone = dvb_dummy_fe_set_tone,
+};
+
+MODULE_DESCRIPTION("DVB DUMMY Frontend");
+MODULE_AUTHOR("Emard");
+MODULE_LICENSE("GPL");
diff --git a/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h
new file mode 100644
index 000000000000..463abf5ebd56
--- /dev/null
+++ b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.h
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ * Driver for Dummy Frontend
+ *
+ * Written by Emard <emard@xxxxxxxxxxxx>
+ */
+
+#ifndef DVB_DUMMY_FE_H
+#define DVB_DUMMY_FE_H
+
+#include <linux/dvb/frontend.h>
+#include <media/dvb_frontend.h>
+
+#if IS_REACHABLE(CONFIG_DVB_DUMMY_FE)
+struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void);
+struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void);
+struct dvb_frontend *dvb_dummy_fe_qam_attach(void);
+#else
+static inline struct dvb_frontend *dvb_dummy_fe_ofdm_attach(void)
+{
+ pr_warn("%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+static inline struct dvb_frontend *dvb_dummy_fe_qpsk_attach(void)
+{
+ pr_warn("%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+static inline struct dvb_frontend *dvb_dummy_fe_qam_attach(void)
+{
+ pr_warn("%s: driver disabled by Kconfig\n", __func__);
+ return NULL;
+}
+#endif /* CONFIG_DVB_DUMMY_FE */
+
+#endif // DVB_DUMMY_FE_H
--
2.25.1
