1 // SPDX-License-Identifier: GPL-2.0-only
18  * Converted to the radio-isa framework by Hans Verkuil <hans.verkuil@cisco.com>
23  * Fully tested with the Keene USB FM Transmitter and the v4l2-compliance tool.
35 #include <media/v4l2-ioctl.h>
36 #include <media/v4l2-device.h>
37 #include "radio-isa.h"
53 #define CONFIG_RADIO_GEMTEK_PORT -1
64 			      [1 ... (GEMTEK_MAX - 1)] = -1 };
65 static int radio_nr[GEMTEK_MAX]	= { [0 ... (GEMTEK_MAX - 1)] = -1 };
68 MODULE_PARM_DESC(probe, "Enable automatic device probing.");
71 MODULE_PARM_DESC(hardmute, "Enable 'hard muting' by shutting down PLL, may reduce static noise.");
89 #define GEMTEK_CE		0x04	/* Chip enable			*/
91 #define GEMTEK_MT		0x10	/* Line mute			*/
128 #define MKMASK(field)	(((1UL<<BU2614_##field##_BITS) - 1) << \
144 #define gemtek_bu2614_set(dev, field, data) ((dev)->bu2614data = \
145 	((dev)->bu2614data & ~field##_MASK) | ((data) << field##_SHIFT))
152 	struct radio_isa_card *isa = &gt->isa;  in gemtek_bu2614_transmit()
153 	int i, bit, q, mute;  in gemtek_bu2614_transmit()  local
155 	mute = gt->muted ? GEMTEK_MT : 0x00;  in gemtek_bu2614_transmit()
157 	outb_p(mute | GEMTEK_CE | GEMTEK_DA | GEMTEK_CK, isa->io);  in gemtek_bu2614_transmit()
160 	for (i = 0, q = gt->bu2614data; i < 32; i++, q >>= 1) {  in gemtek_bu2614_transmit()
162 		outb_p(mute | GEMTEK_CE | bit, isa->io);  in gemtek_bu2614_transmit()
164 		outb_p(mute | GEMTEK_CE | bit | GEMTEK_CK, isa->io);  in gemtek_bu2614_transmit()
168 	outb_p(mute | GEMTEK_DA | GEMTEK_CK, isa->io);  in gemtek_bu2614_transmit()
173  * Calculate divisor from FM-frequency for BU2614FS (3.125 KHz STDF expected).
185 		gt->muted = true;  in gemtek_alloc()
186 	return gt ? &gt->isa : NULL;  in gemtek_alloc()
190  * Set FM-frequency.
196 	if (hardmute && gt->muted)  in gemtek_s_frequency()
201 	gemtek_bu2614_set(gt, BU2614_SWIN, 0);	/* FM-mode	*/  in gemtek_s_frequency()
212  * Set mute flag.
214 static int gemtek_s_mute_volume(struct radio_isa_card *isa, bool mute, int vol)  in gemtek_s_mute_volume()  argument
219 	gt->muted = mute;  in gemtek_s_mute_volume()
221 		if (!mute)  in gemtek_s_mute_volume()
222 			return gemtek_s_frequency(isa, isa->freq);  in gemtek_s_mute_volume()
227 		gemtek_bu2614_set(gt, BU2614_SWIN, 0);	/* FM-mode	*/  in gemtek_s_mute_volume()
238 	i = inb_p(isa->io);  in gemtek_s_mute_volume()
239 	/* Write it back with mute flag set. */  in gemtek_s_mute_volume()
240 	outb_p((i >> 5) | (mute ? GEMTEK_MT : 0), isa->io);  in gemtek_s_mute_volume()
247 	if (inb_p(isa->io) & GEMTEK_NS)  in gemtek_g_rxsubchans()
286 	/* AOpen FX-3D/Pro Radio */
300 			.name	= "radio-gemtek",
305 		.name		= "radio-gemtek",