| Author | Tokens | Token Proportion | Commits | Commit Proportion |
|---|---|---|---|---|
| Ondrej Zary | 1036 | 61.85% | 2 | 8.33% |
| Hans Verkuil | 359 | 21.43% | 6 | 25.00% |
| Andrew Morton | 194 | 11.58% | 1 | 4.17% |
| Mauro Carvalho Chehab | 50 | 2.99% | 7 | 29.17% |
| Douglas Schilling Landgraf | 25 | 1.49% | 1 | 4.17% |
| Dan Carpenter | 4 | 0.24% | 1 | 4.17% |
| Hans de Goede | 2 | 0.12% | 1 | 4.17% |
| Masanari Iida | 1 | 0.06% | 1 | 4.17% |
| Arvind Yadav | 1 | 0.06% | 1 | 4.17% |
| Julia Lawall | 1 | 0.06% | 1 | 4.17% |
| Thomas Gleixner | 1 | 0.06% | 1 | 4.17% |
| Peter Osterlund | 1 | 0.06% | 1 | 4.17% |
| Total | 1675 | 24 |
// SPDX-License-Identifier: GPL-2.0-only /* SF16-FMR2 and SF16-FMD2 radio driver for Linux * Copyright (c) 2011 Ondrej Zary * * Original driver was (c) 2000-2002 Ziglio Frediano, freddy77@angelfire.com * but almost nothing remained here after conversion to generic TEA575x * implementation */ #include <linux/delay.h> #include <linux/module.h> /* Modules */ #include <linux/init.h> /* Initdata */ #include <linux/slab.h> #include <linux/ioport.h> /* request_region */ #include <linux/io.h> /* outb, outb_p */ #include <linux/isa.h> #include <linux/pnp.h> #include <media/drv-intf/tea575x.h> MODULE_AUTHOR("Ondrej Zary"); MODULE_DESCRIPTION("MediaForte SF16-FMR2 and SF16-FMD2 FM radio card driver"); MODULE_LICENSE("GPL"); /* these cards can only use two different ports (0x384 and 0x284) */ #define FMR2_MAX 2 static int radio_nr[FMR2_MAX] = { [0 ... (FMR2_MAX - 1)] = -1 }; module_param_array(radio_nr, int, NULL, 0444); MODULE_PARM_DESC(radio_nr, "Radio device numbers"); struct fmr2 { int io; struct v4l2_device v4l2_dev; struct snd_tea575x tea; struct v4l2_ctrl *volume; struct v4l2_ctrl *balance; bool is_fmd2; }; static int num_fmr2_cards; static struct fmr2 *fmr2_cards[FMR2_MAX]; static bool isa_registered; static bool pnp_registered; /* the port is hardwired on SF16-FMR2 */ #define FMR2_PORT 0x384 /* TEA575x tuner pins */ #define STR_DATA (1 << 0) #define STR_CLK (1 << 1) #define STR_WREN (1 << 2) #define STR_MOST (1 << 3) /* PT2254A/TC9154A volume control pins */ #define PT_ST (1 << 4) #define PT_CK (1 << 5) #define PT_DATA (1 << 6) /* volume control presence pin */ #define FMR2_HASVOL (1 << 7) static void fmr2_tea575x_set_pins(struct snd_tea575x *tea, u8 pins) { struct fmr2 *fmr2 = tea->private_data; u8 bits = 0; bits |= (pins & TEA575X_DATA) ? STR_DATA : 0; bits |= (pins & TEA575X_CLK) ? STR_CLK : 0; /* WRITE_ENABLE is inverted, DATA must be high during read */ bits |= (pins & TEA575X_WREN) ? 0 : STR_WREN | STR_DATA; outb(bits, fmr2->io); } static u8 fmr2_tea575x_get_pins(struct snd_tea575x *tea) { struct fmr2 *fmr2 = tea->private_data; u8 bits = inb(fmr2->io); return ((bits & STR_DATA) ? TEA575X_DATA : 0) | ((bits & STR_MOST) ? TEA575X_MOST : 0); } static void fmr2_tea575x_set_direction(struct snd_tea575x *tea, bool output) { } static const struct snd_tea575x_ops fmr2_tea_ops = { .set_pins = fmr2_tea575x_set_pins, .get_pins = fmr2_tea575x_get_pins, .set_direction = fmr2_tea575x_set_direction, }; /* TC9154A/PT2254A volume control */ /* 18-bit shift register bit definitions */ #define TC9154A_ATT_MAJ_0DB (1 << 0) #define TC9154A_ATT_MAJ_10DB (1 << 1) #define TC9154A_ATT_MAJ_20DB (1 << 2) #define TC9154A_ATT_MAJ_30DB (1 << 3) #define TC9154A_ATT_MAJ_40DB (1 << 4) #define TC9154A_ATT_MAJ_50DB (1 << 5) #define TC9154A_ATT_MAJ_60DB (1 << 6) #define TC9154A_ATT_MIN_0DB (1 << 7) #define TC9154A_ATT_MIN_2DB (1 << 8) #define TC9154A_ATT_MIN_4DB (1 << 9) #define TC9154A_ATT_MIN_6DB (1 << 10) #define TC9154A_ATT_MIN_8DB (1 << 11) /* bit 12 is ignored */ #define TC9154A_CHANNEL_LEFT (1 << 13) #define TC9154A_CHANNEL_RIGHT (1 << 14) /* bits 15, 16, 17 must be 0 */ #define TC9154A_ATT_MAJ(x) (1 << x) #define TC9154A_ATT_MIN(x) (1 << (7 + x)) static void tc9154a_set_pins(struct fmr2 *fmr2, u8 pins) { if (!fmr2->tea.mute) pins |= STR_WREN; outb(pins, fmr2->io); } static void tc9154a_set_attenuation(struct fmr2 *fmr2, int att, u32 channel) { int i; u32 reg; u8 bit; reg = TC9154A_ATT_MAJ(att / 10) | TC9154A_ATT_MIN((att % 10) / 2); reg |= channel; /* write 18-bit shift register, LSB first */ for (i = 0; i < 18; i++) { bit = reg & (1 << i) ? PT_DATA : 0; tc9154a_set_pins(fmr2, bit); udelay(5); tc9154a_set_pins(fmr2, bit | PT_CK); udelay(5); tc9154a_set_pins(fmr2, bit); } /* latch register data */ udelay(5); tc9154a_set_pins(fmr2, PT_ST); udelay(5); tc9154a_set_pins(fmr2, 0); } static int fmr2_s_ctrl(struct v4l2_ctrl *ctrl) { struct snd_tea575x *tea = container_of(ctrl->handler, struct snd_tea575x, ctrl_handler); struct fmr2 *fmr2 = tea->private_data; int volume, balance, left, right; switch (ctrl->id) { case V4L2_CID_AUDIO_VOLUME: volume = ctrl->val; balance = fmr2->balance->cur.val; break; case V4L2_CID_AUDIO_BALANCE: balance = ctrl->val; volume = fmr2->volume->cur.val; break; default: return -EINVAL; } left = right = volume; if (balance < 0) right = max(0, right + balance); if (balance > 0) left = max(0, left - balance); tc9154a_set_attenuation(fmr2, abs(left - 68), TC9154A_CHANNEL_LEFT); tc9154a_set_attenuation(fmr2, abs(right - 68), TC9154A_CHANNEL_RIGHT); return 0; } static const struct v4l2_ctrl_ops fmr2_ctrl_ops = { .s_ctrl = fmr2_s_ctrl, }; static int fmr2_tea_ext_init(struct snd_tea575x *tea) { struct fmr2 *fmr2 = tea->private_data; /* FMR2 can have volume control, FMD2 can't (uses SB16 mixer) */ if (!fmr2->is_fmd2 && inb(fmr2->io) & FMR2_HASVOL) { fmr2->volume = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_VOLUME, 0, 68, 2, 56); fmr2->balance = v4l2_ctrl_new_std(&tea->ctrl_handler, &fmr2_ctrl_ops, V4L2_CID_AUDIO_BALANCE, -68, 68, 2, 0); if (tea->ctrl_handler.error) { printk(KERN_ERR "radio-sf16fmr2: can't initialize controls\n"); return tea->ctrl_handler.error; } } return 0; } static const struct pnp_device_id fmr2_pnp_ids[] = { { .id = "MFRad13" }, /* tuner subdevice of SF16-FMD2 */ { .id = "" } }; MODULE_DEVICE_TABLE(pnp, fmr2_pnp_ids); static int fmr2_probe(struct fmr2 *fmr2, struct device *pdev, int io) { int err, i; char *card_name = fmr2->is_fmd2 ? "SF16-FMD2" : "SF16-FMR2"; /* avoid errors if a card was already registered at given port */ for (i = 0; i < num_fmr2_cards; i++) if (io == fmr2_cards[i]->io) return -EBUSY; strscpy(fmr2->v4l2_dev.name, "radio-sf16fmr2", sizeof(fmr2->v4l2_dev.name)), fmr2->io = io; if (!request_region(fmr2->io, 2, fmr2->v4l2_dev.name)) { printk(KERN_ERR "radio-sf16fmr2: I/O port 0x%x already in use\n", fmr2->io); return -EBUSY; } dev_set_drvdata(pdev, fmr2); err = v4l2_device_register(pdev, &fmr2->v4l2_dev); if (err < 0) { v4l2_err(&fmr2->v4l2_dev, "Could not register v4l2_device\n"); release_region(fmr2->io, 2); return err; } fmr2->tea.v4l2_dev = &fmr2->v4l2_dev; fmr2->tea.private_data = fmr2; fmr2->tea.radio_nr = radio_nr[num_fmr2_cards]; fmr2->tea.ops = &fmr2_tea_ops; fmr2->tea.ext_init = fmr2_tea_ext_init; strscpy(fmr2->tea.card, card_name, sizeof(fmr2->tea.card)); snprintf(fmr2->tea.bus_info, sizeof(fmr2->tea.bus_info), "%s:%s", fmr2->is_fmd2 ? "PnP" : "ISA", dev_name(pdev)); if (snd_tea575x_init(&fmr2->tea, THIS_MODULE)) { printk(KERN_ERR "radio-sf16fmr2: Unable to detect TEA575x tuner\n"); release_region(fmr2->io, 2); return -ENODEV; } printk(KERN_INFO "radio-sf16fmr2: %s radio card at 0x%x.\n", card_name, fmr2->io); return 0; } static int fmr2_isa_match(struct device *pdev, unsigned int ndev) { struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); if (!fmr2) return 0; if (fmr2_probe(fmr2, pdev, FMR2_PORT)) { kfree(fmr2); return 0; } dev_set_drvdata(pdev, fmr2); fmr2_cards[num_fmr2_cards++] = fmr2; return 1; } static int fmr2_pnp_probe(struct pnp_dev *pdev, const struct pnp_device_id *id) { int ret; struct fmr2 *fmr2 = kzalloc(sizeof(*fmr2), GFP_KERNEL); if (!fmr2) return -ENOMEM; fmr2->is_fmd2 = true; ret = fmr2_probe(fmr2, &pdev->dev, pnp_port_start(pdev, 0)); if (ret) { kfree(fmr2); return ret; } pnp_set_drvdata(pdev, fmr2); fmr2_cards[num_fmr2_cards++] = fmr2; return 0; } static void fmr2_remove(struct fmr2 *fmr2) { snd_tea575x_exit(&fmr2->tea); release_region(fmr2->io, 2); v4l2_device_unregister(&fmr2->v4l2_dev); kfree(fmr2); } static int fmr2_isa_remove(struct device *pdev, unsigned int ndev) { fmr2_remove(dev_get_drvdata(pdev)); return 0; } static void fmr2_pnp_remove(struct pnp_dev *pdev) { fmr2_remove(pnp_get_drvdata(pdev)); pnp_set_drvdata(pdev, NULL); } static struct isa_driver fmr2_isa_driver = { .match = fmr2_isa_match, .remove = fmr2_isa_remove, .driver = { .name = "radio-sf16fmr2", }, }; static struct pnp_driver fmr2_pnp_driver = { .name = "radio-sf16fmr2", .id_table = fmr2_pnp_ids, .probe = fmr2_pnp_probe, .remove = fmr2_pnp_remove, }; static int __init fmr2_init(void) { int ret; ret = pnp_register_driver(&fmr2_pnp_driver); if (!ret) pnp_registered = true; ret = isa_register_driver(&fmr2_isa_driver, 1); if (!ret) isa_registered = true; return (pnp_registered || isa_registered) ? 0 : ret; } static void __exit fmr2_exit(void) { if (pnp_registered) pnp_unregister_driver(&fmr2_pnp_driver); if (isa_registered) isa_unregister_driver(&fmr2_isa_driver); } module_init(fmr2_init); module_exit(fmr2_exit);
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