media: cxd2880: Add tuner part of the driver

This part of the driver has the main routines to handle
the tuner and demodulator functionality.  The tnrdmd_mon.* files
have monitor functions for the driver.
This is part of the Sony CXD2880 DVB-T2/T tuner + demodulator driver.
Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>
Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com>
Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com>
Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com>
Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com>
Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/dvb-frontends/cxd2880/cxd2880_dtv.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * cxd2880_dtv.h
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * DTV related definitions
+ *
+ * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
+ */
+
+#ifndef CXD2880_DTV_H
+#define CXD2880_DTV_H
+
+enum cxd2880_dtv_sys {
+	CXD2880_DTV_SYS_UNKNOWN,
+	CXD2880_DTV_SYS_DVBT,
+	CXD2880_DTV_SYS_DVBT2,
+	CXD2880_DTV_SYS_ANY
+};
+
+enum cxd2880_dtv_bandwidth {
+	CXD2880_DTV_BW_UNKNOWN = 0,
+	CXD2880_DTV_BW_1_7_MHZ = 1,
+	CXD2880_DTV_BW_5_MHZ = 5,
+	CXD2880_DTV_BW_6_MHZ = 6,
+	CXD2880_DTV_BW_7_MHZ = 7,
+	CXD2880_DTV_BW_8_MHZ = 8
+};
+
+#endif

drivers/media/dvb-frontends/cxd2880/cxd2880_tnrdmd_driver_version.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * cxd2880_tnrdmd_driver_version.h
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * version information
+ *
+ * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
+ */
+
+#define CXD2880_TNRDMD_DRIVER_VERSION "1.4.1 - 1.0.4"
+
+#define CXD2880_TNRDMD_DRIVER_RELEASE_DATE "2018-01-17"

drivers/media/dvb-frontends/cxd2880/cxd2880_tnrdmd_mon.c

+// SPDX-License-Identifier: GPL-2.0
+/*
+ * cxd2880_tnrdmd_mon.c
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * common monitor functions
+ *
+ * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
+ */
+
+#include "cxd2880_common.h"
+#include "cxd2880_tnrdmd_mon.h"
+
+static const u8 rf_lvl_seq[2] = {
+	0x80, 0x00,
+};
+
+int cxd2880_tnrdmd_mon_rf_lvl(struct cxd2880_tnrdmd *tnr_dmd,
+			      int *rf_lvl_db)
+{
+	u8 rdata[2];
+	int ret;
+
+	if (!tnr_dmd || !rf_lvl_db)
+		return -EINVAL;
+
+	if (tnr_dmd->state != CXD2880_TNRDMD_STATE_ACTIVE)
+		return -EINVAL;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_DMD,
+				     0x00, 0x00);
+	if (ret)
+		return ret;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_DMD,
+				     0x10, 0x01);
+	if (ret)
+		return ret;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x00, 0x10);
+	if (ret)
+		return ret;
+
+	ret = tnr_dmd->io->write_regs(tnr_dmd->io,
+				      CXD2880_IO_TGT_SYS,
+				      0x5b, rf_lvl_seq, 2);
+	if (ret)
+		return ret;
+
+	usleep_range(2000, 3000);
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x00, 0x1a);
+	if (ret)
+		return ret;
+
+	ret = tnr_dmd->io->read_regs(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x15, rdata, 2);
+	if (ret)
+		return ret;
+
+	if (rdata[0] || rdata[1])
+		return -EINVAL;
+
+	ret = tnr_dmd->io->read_regs(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x11, rdata, 2);
+	if (ret)
+		return ret;
+
+	*rf_lvl_db =
+	    cxd2880_convert2s_complement((rdata[0] << 3) |
+					 ((rdata[1] & 0xe0) >> 5), 11);
+
+	*rf_lvl_db *= 125;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_DMD,
+				     0x00, 0x00);
+	if (ret)
+		return ret;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_DMD,
+				     0x10, 0x00);
+	if (ret)
+		return ret;
+
+	if (tnr_dmd->rf_lvl_cmpstn)
+		ret = tnr_dmd->rf_lvl_cmpstn(tnr_dmd, rf_lvl_db);
+
+	return ret;
+}
+
+int cxd2880_tnrdmd_mon_rf_lvl_sub(struct cxd2880_tnrdmd *tnr_dmd,
+				  int *rf_lvl_db)
+{
+	if (!tnr_dmd || !rf_lvl_db)
+		return -EINVAL;
+
+	if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
+		return -EINVAL;
+
+	return cxd2880_tnrdmd_mon_rf_lvl(tnr_dmd->diver_sub, rf_lvl_db);
+}
+
+int cxd2880_tnrdmd_mon_internal_cpu_status(struct cxd2880_tnrdmd
+					   *tnr_dmd, u16 *status)
+{
+	u8 data[2] = { 0 };
+	int ret;
+
+	if (!tnr_dmd || !status)
+		return -EINVAL;
+
+	ret = tnr_dmd->io->write_reg(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x00, 0x1a);
+	if (ret)
+		return ret;
+	ret = tnr_dmd->io->read_regs(tnr_dmd->io,
+				     CXD2880_IO_TGT_SYS,
+				     0x15, data, 2);
+	if (ret)
+		return ret;
+
+	*status = (data[0] << 8) | data[1];
+
+	return 0;
+}
+
+int cxd2880_tnrdmd_mon_internal_cpu_status_sub(struct
+					       cxd2880_tnrdmd
+					       *tnr_dmd,
+					       u16 *status)
+{
+	if (!tnr_dmd || !status)
+		return -EINVAL;
+
+	if (tnr_dmd->diver_mode != CXD2880_TNRDMD_DIVERMODE_MAIN)
+		return -EINVAL;
+
+	return cxd2880_tnrdmd_mon_internal_cpu_status(tnr_dmd->diver_sub,
+						      status);
+}

drivers/media/dvb-frontends/cxd2880/cxd2880_tnrdmd_mon.h

+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * cxd2880_tnrdmd_mon.h
+ * Sony CXD2880 DVB-T2/T tuner + demodulator driver
+ * common monitor interface
+ *
+ * Copyright (C) 2016, 2017, 2018 Sony Semiconductor Solutions Corporation
+ */
+
+#ifndef CXD2880_TNRDMD_MON_H
+#define CXD2880_TNRDMD_MON_H
+
+#include "cxd2880_common.h"
+#include "cxd2880_tnrdmd.h"
+
+int cxd2880_tnrdmd_mon_rf_lvl(struct cxd2880_tnrdmd *tnr_dmd,
+			      int *rf_lvl_db);
+
+int cxd2880_tnrdmd_mon_rf_lvl_sub(struct cxd2880_tnrdmd *tnr_dmd,
+				  int *rf_lvl_db);
+
+int cxd2880_tnrdmd_mon_internal_cpu_status(struct cxd2880_tnrdmd
+					   *tnr_dmd, u16 *status);
+
+int cxd2880_tnrdmd_mon_internal_cpu_status_sub(struct
+					       cxd2880_tnrdmd
+					       *tnr_dmd,
+					       u16 *status);
+#endif