Author | Tokens | Token Proportion | Commits | Commit Proportion |
---|---|---|---|---|
David S. Miller | 1363 | 80.32% | 4 | 22.22% |
Dmitry Torokhov | 242 | 14.26% | 3 | 16.67% |
Thierry Reding | 28 | 1.65% | 1 | 5.56% |
Grant C. Likely | 20 | 1.18% | 3 | 16.67% |
Luis de Bethencourt | 14 | 0.82% | 1 | 5.56% |
Sam Ravnborg | 13 | 0.77% | 1 | 5.56% |
Jingoo Han | 5 | 0.29% | 1 | 5.56% |
Miaoqian Lin | 5 | 0.29% | 1 | 5.56% |
Jiri Slaby | 3 | 0.18% | 1 | 5.56% |
Tejun Heo | 3 | 0.18% | 1 | 5.56% |
Thomas Gleixner | 1 | 0.06% | 1 | 5.56% |
Total | 1697 | 18 |
// SPDX-License-Identifier: GPL-2.0-only /* * Driver for PC-speaker like devices found on various Sparc systems. * * Copyright (c) 2002 Vojtech Pavlik * Copyright (c) 2002, 2006, 2008 David S. Miller (davem@davemloft.net) */ #include <linux/kernel.h> #include <linux/module.h> #include <linux/init.h> #include <linux/input.h> #include <linux/of_device.h> #include <linux/slab.h> #include <asm/io.h> MODULE_AUTHOR("David S. Miller <davem@davemloft.net>"); MODULE_DESCRIPTION("Sparc Speaker beeper driver"); MODULE_LICENSE("GPL"); struct grover_beep_info { void __iomem *freq_regs; void __iomem *enable_reg; }; struct bbc_beep_info { u32 clock_freq; void __iomem *regs; }; struct sparcspkr_state { const char *name; int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value); spinlock_t lock; struct input_dev *input_dev; union { struct grover_beep_info grover; struct bbc_beep_info bbc; } u; }; static u32 bbc_count_to_reg(struct bbc_beep_info *info, unsigned int count) { u32 val, clock_freq = info->clock_freq; int i; if (!count) return 0; if (count <= clock_freq >> 20) return 1 << 18; if (count >= clock_freq >> 12) return 1 << 10; val = 1 << 18; for (i = 19; i >= 11; i--) { val >>= 1; if (count <= clock_freq >> i) break; } return val; } static int bbc_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent); struct bbc_beep_info *info = &state->u.bbc; unsigned int count = 0; unsigned long flags; if (type != EV_SND) return -1; switch (code) { case SND_BELL: if (value) value = 1000; case SND_TONE: break; default: return -1; } if (value > 20 && value < 32767) count = 1193182 / value; count = bbc_count_to_reg(info, count); spin_lock_irqsave(&state->lock, flags); if (count) { sbus_writeb(0x01, info->regs + 0); sbus_writeb(0x00, info->regs + 2); sbus_writeb((count >> 16) & 0xff, info->regs + 3); sbus_writeb((count >> 8) & 0xff, info->regs + 4); sbus_writeb(0x00, info->regs + 5); } else { sbus_writeb(0x00, info->regs + 0); } spin_unlock_irqrestore(&state->lock, flags); return 0; } static int grover_spkr_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { struct sparcspkr_state *state = dev_get_drvdata(dev->dev.parent); struct grover_beep_info *info = &state->u.grover; unsigned int count = 0; unsigned long flags; if (type != EV_SND) return -1; switch (code) { case SND_BELL: if (value) value = 1000; case SND_TONE: break; default: return -1; } if (value > 20 && value < 32767) count = 1193182 / value; spin_lock_irqsave(&state->lock, flags); if (count) { /* enable counter 2 */ sbus_writeb(sbus_readb(info->enable_reg) | 3, info->enable_reg); /* set command for counter 2, 2 byte write */ sbus_writeb(0xB6, info->freq_regs + 1); /* select desired HZ */ sbus_writeb(count & 0xff, info->freq_regs + 0); sbus_writeb((count >> 8) & 0xff, info->freq_regs + 0); } else { /* disable counter 2 */ sbus_writeb(sbus_readb(info->enable_reg) & 0xFC, info->enable_reg); } spin_unlock_irqrestore(&state->lock, flags); return 0; } static int sparcspkr_probe(struct device *dev) { struct sparcspkr_state *state = dev_get_drvdata(dev); struct input_dev *input_dev; int error; input_dev = input_allocate_device(); if (!input_dev) return -ENOMEM; input_dev->name = state->name; input_dev->phys = "sparc/input0"; input_dev->id.bustype = BUS_ISA; input_dev->id.vendor = 0x001f; input_dev->id.product = 0x0001; input_dev->id.version = 0x0100; input_dev->dev.parent = dev; input_dev->evbit[0] = BIT_MASK(EV_SND); input_dev->sndbit[0] = BIT_MASK(SND_BELL) | BIT_MASK(SND_TONE); input_dev->event = state->event; error = input_register_device(input_dev); if (error) { input_free_device(input_dev); return error; } state->input_dev = input_dev; return 0; } static void sparcspkr_shutdown(struct platform_device *dev) { struct sparcspkr_state *state = platform_get_drvdata(dev); struct input_dev *input_dev = state->input_dev; /* turn off the speaker */ state->event(input_dev, EV_SND, SND_BELL, 0); } static int bbc_beep_probe(struct platform_device *op) { struct sparcspkr_state *state; struct bbc_beep_info *info; struct device_node *dp; int err = -ENOMEM; state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) goto out_err; state->name = "Sparc BBC Speaker"; state->event = bbc_spkr_event; spin_lock_init(&state->lock); dp = of_find_node_by_path("/"); err = -ENODEV; if (!dp) goto out_free; info = &state->u.bbc; info->clock_freq = of_getintprop_default(dp, "clock-frequency", 0); of_node_put(dp); if (!info->clock_freq) goto out_free; info->regs = of_ioremap(&op->resource[0], 0, 6, "bbc beep"); if (!info->regs) goto out_free; platform_set_drvdata(op, state); err = sparcspkr_probe(&op->dev); if (err) goto out_clear_drvdata; return 0; out_clear_drvdata: of_iounmap(&op->resource[0], info->regs, 6); out_free: kfree(state); out_err: return err; } static int bbc_remove(struct platform_device *op) { struct sparcspkr_state *state = platform_get_drvdata(op); struct input_dev *input_dev = state->input_dev; struct bbc_beep_info *info = &state->u.bbc; /* turn off the speaker */ state->event(input_dev, EV_SND, SND_BELL, 0); input_unregister_device(input_dev); of_iounmap(&op->resource[0], info->regs, 6); kfree(state); return 0; } static const struct of_device_id bbc_beep_match[] = { { .name = "beep", .compatible = "SUNW,bbc-beep", }, {}, }; MODULE_DEVICE_TABLE(of, bbc_beep_match); static struct platform_driver bbc_beep_driver = { .driver = { .name = "bbcbeep", .of_match_table = bbc_beep_match, }, .probe = bbc_beep_probe, .remove = bbc_remove, .shutdown = sparcspkr_shutdown, }; static int grover_beep_probe(struct platform_device *op) { struct sparcspkr_state *state; struct grover_beep_info *info; int err = -ENOMEM; state = kzalloc(sizeof(*state), GFP_KERNEL); if (!state) goto out_err; state->name = "Sparc Grover Speaker"; state->event = grover_spkr_event; spin_lock_init(&state->lock); info = &state->u.grover; info->freq_regs = of_ioremap(&op->resource[2], 0, 2, "grover beep freq"); if (!info->freq_regs) goto out_free; info->enable_reg = of_ioremap(&op->resource[3], 0, 1, "grover beep enable"); if (!info->enable_reg) goto out_unmap_freq_regs; platform_set_drvdata(op, state); err = sparcspkr_probe(&op->dev); if (err) goto out_clear_drvdata; return 0; out_clear_drvdata: of_iounmap(&op->resource[3], info->enable_reg, 1); out_unmap_freq_regs: of_iounmap(&op->resource[2], info->freq_regs, 2); out_free: kfree(state); out_err: return err; } static int grover_remove(struct platform_device *op) { struct sparcspkr_state *state = platform_get_drvdata(op); struct grover_beep_info *info = &state->u.grover; struct input_dev *input_dev = state->input_dev; /* turn off the speaker */ state->event(input_dev, EV_SND, SND_BELL, 0); input_unregister_device(input_dev); of_iounmap(&op->resource[3], info->enable_reg, 1); of_iounmap(&op->resource[2], info->freq_regs, 2); kfree(state); return 0; } static const struct of_device_id grover_beep_match[] = { { .name = "beep", .compatible = "SUNW,smbus-beep", }, {}, }; MODULE_DEVICE_TABLE(of, grover_beep_match); static struct platform_driver grover_beep_driver = { .driver = { .name = "groverbeep", .of_match_table = grover_beep_match, }, .probe = grover_beep_probe, .remove = grover_remove, .shutdown = sparcspkr_shutdown, }; static struct platform_driver * const drivers[] = { &bbc_beep_driver, &grover_beep_driver, }; static int __init sparcspkr_init(void) { return platform_register_drivers(drivers, ARRAY_SIZE(drivers)); } static void __exit sparcspkr_exit(void) { platform_unregister_drivers(drivers, ARRAY_SIZE(drivers)); } module_init(sparcspkr_init); module_exit(sparcspkr_exit);
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