Adding upstream version 6.1.76.upstream/6.1.76upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 153 insertions, 0 deletions

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 000000000..520ebd16b
--- /dev/null
+++ b/drivers/media/pci/ddbridge/ddbridge-dummy-fe.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *  Driver for Dummy Frontend
+ *
+ *  Written by Emard <emard@softhome.net>
+ */
+
+#include <linux/module.h>
+#include <linux/init.h>
+#include <linux/string.h>
+#include <linux/slab.h>
+
+#include <media/dvb_frontend.h>
+#include "ddbridge-dummy-fe.h"
+
+struct ddbridge_dummy_fe_state {
+	struct dvb_frontend frontend;
+};
+
+static int ddbridge_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 ddbridge_dummy_fe_read_ber(struct dvb_frontend *fe, u32 *ber)
+{
+	*ber = 0;
+	return 0;
+}
+
+static int ddbridge_dummy_fe_read_signal_strength(struct dvb_frontend *fe,
+					     u16 *strength)
+{
+	*strength = 0;
+	return 0;
+}
+
+static int ddbridge_dummy_fe_read_snr(struct dvb_frontend *fe, u16 *snr)
+{
+	*snr = 0;
+	return 0;
+}
+
+static int ddbridge_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 ddbridge_dummy_fe_get_frontend(struct dvb_frontend *fe,
+				     struct dtv_frontend_properties *p)
+{
+	return 0;
+}
+
+static int ddbridge_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 ddbridge_dummy_fe_sleep(struct dvb_frontend *fe)
+{
+	return 0;
+}
+
+static int ddbridge_dummy_fe_init(struct dvb_frontend *fe)
+{
+	return 0;
+}
+
+static void ddbridge_dummy_fe_release(struct dvb_frontend *fe)
+{
+	struct ddbridge_dummy_fe_state *state = fe->demodulator_priv;
+
+	kfree(state);
+}
+
+static const struct dvb_frontend_ops ddbridge_dummy_fe_qam_ops;
+
+struct dvb_frontend *ddbridge_dummy_fe_qam_attach(void)
+{
+	struct ddbridge_dummy_fe_state *state = NULL;
+
+	/* allocate memory for the internal state */
+	state = kzalloc(sizeof(struct ddbridge_dummy_fe_state), GFP_KERNEL);
+	if (!state)
+		return NULL;
+
+	/* create dvb_frontend */
+	memcpy(&state->frontend.ops,
+	       &ddbridge_dummy_fe_qam_ops,
+	       sizeof(struct dvb_frontend_ops));
+
+	state->frontend.demodulator_priv = state;
+	return &state->frontend;
+}
+EXPORT_SYMBOL_GPL(ddbridge_dummy_fe_qam_attach);
+
+static const struct dvb_frontend_ops ddbridge_dummy_fe_qam_ops = {
+	.delsys = { SYS_DVBC_ANNEX_A },
+	.info = {
+		.name			= "ddbridge 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 = ddbridge_dummy_fe_release,
+
+	.init = ddbridge_dummy_fe_init,
+	.sleep = ddbridge_dummy_fe_sleep,
+
+	.set_frontend = ddbridge_dummy_fe_set_frontend,
+	.get_frontend = ddbridge_dummy_fe_get_frontend,
+
+	.read_status = ddbridge_dummy_fe_read_status,
+	.read_ber = ddbridge_dummy_fe_read_ber,
+	.read_signal_strength = ddbridge_dummy_fe_read_signal_strength,
+	.read_snr = ddbridge_dummy_fe_read_snr,
+	.read_ucblocks = ddbridge_dummy_fe_read_ucblocks,
+};
+
+MODULE_DESCRIPTION("ddbridge dummy Frontend");
+MODULE_AUTHOR("Emard");
+MODULE_LICENSE("GPL");