| Samuel Ortiz | e97e2dd | 2007-07-21 19:07:33 -0700 | [diff] [blame] | 1 | /* |
| 2 | * IR port driver for the Cirrus Logic EP7211 processor. |
| 3 | * |
| 4 | * Copyright 2001, Blue Mug Inc. All rights reserved. |
| 5 | * Copyright 2007, Samuel Ortiz <samuel@sortiz.org> |
| 6 | */ |
| 7 | #include <linux/module.h> |
| 8 | #include <linux/delay.h> |
| 9 | #include <linux/tty.h> |
| 10 | #include <linux/init.h> |
| 11 | #include <linux/spinlock.h> |
| 12 | |
| 13 | #include <net/irda/irda.h> |
| 14 | #include <net/irda/irda_device.h> |
| 15 | |
| 16 | #include <asm/io.h> |
| 17 | #include <asm/hardware.h> |
| 18 | |
| 19 | #include "sir-dev.h" |
| 20 | |
| 21 | #define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */ |
| 22 | #define MAX_DELAY 10000 /* 1 ms */ |
| 23 | |
| 24 | static int ep7211_open(struct sir_dev *dev); |
| 25 | static int ep7211_close(struct sir_dev *dev); |
| 26 | static int ep7211_change_speed(struct sir_dev *dev, unsigned speed); |
| 27 | static int ep7211_reset(struct sir_dev *dev); |
| 28 | |
| 29 | static struct dongle_driver ep7211 = { |
| 30 | .owner = THIS_MODULE, |
| 31 | .driver_name = "EP7211 IR driver", |
| 32 | .type = IRDA_EP7211_DONGLE, |
| 33 | .open = ep7211_open, |
| 34 | .close = ep7211_close, |
| 35 | .reset = ep7211_reset, |
| 36 | .set_speed = ep7211_change_speed, |
| 37 | }; |
| 38 | |
| 39 | static int __init ep7211_sir_init(void) |
| 40 | { |
| 41 | return irda_register_dongle(&ep7211); |
| 42 | } |
| 43 | |
| 44 | static void __exit ep7211_sir_cleanup(void) |
| 45 | { |
| 46 | irda_unregister_dongle(&ep7211); |
| 47 | } |
| 48 | |
| 49 | static int ep7211_open(struct sir_dev *dev) |
| 50 | { |
| 51 | unsigned int syscon; |
| 52 | |
| 53 | /* Turn on the SIR encoder. */ |
| 54 | syscon = clps_readl(SYSCON1); |
| 55 | syscon |= SYSCON1_SIREN; |
| 56 | clps_writel(syscon, SYSCON1); |
| 57 | |
| 58 | return 0; |
| 59 | } |
| 60 | |
| 61 | static int ep7211_close(struct sir_dev *dev) |
| 62 | { |
| 63 | unsigned int syscon; |
| 64 | |
| 65 | /* Turn off the SIR encoder. */ |
| 66 | syscon = clps_readl(SYSCON1); |
| 67 | syscon &= ~SYSCON1_SIREN; |
| 68 | clps_writel(syscon, SYSCON1); |
| 69 | |
| 70 | return 0; |
| 71 | } |
| 72 | |
| 73 | static int ep7211_change_speed(struct sir_dev *dev, unsigned speed) |
| 74 | { |
| 75 | return 0; |
| 76 | } |
| 77 | |
| 78 | static int ep7211_reset(struct sir_dev *dev) |
| 79 | { |
| 80 | return 0; |
| 81 | } |
| 82 | |
| 83 | MODULE_AUTHOR("Samuel Ortiz <samuel@sortiz.org>"); |
| 84 | MODULE_DESCRIPTION("EP7211 IR dongle driver"); |
| 85 | MODULE_LICENSE("GPL"); |
| 86 | MODULE_ALIAS("irda-dongle-13"); /* IRDA_EP7211_DONGLE */ |
| 87 | |
| 88 | module_init(ep7211_sir_init); |
| 89 | module_exit(ep7211_sir_cleanup); |