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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 | /* * IR port driver for the Cirrus Logic EP7211 processor. * * Copyright 2001, Blue Mug Inc. All rights reserved. */ #include <linux/module.h> #include <linux/delay.h> #include <linux/tty.h> #include <linux/init.h> #include <net/irda/irda.h> #include <net/irda/irda_device.h> #include <asm/io.h> #include <asm/hardware.h> #define MIN_DELAY 25 /* 15 us, but wait a little more to be sure */ #define MAX_DELAY 10000 /* 1 ms */ static void ep7211_ir_open(dongle_t *self, struct qos_info *qos); static void ep7211_ir_close(dongle_t *self); static int ep7211_ir_change_speed(struct irda_task *task); static int ep7211_ir_reset(struct irda_task *task); static struct dongle_reg dongle = { .type = IRDA_EP7211_IR, .open = ep7211_ir_open, .close = ep7211_ir_close, .reset = ep7211_ir_reset, .change_speed = ep7211_ir_change_speed, .owner = THIS_MODULE, }; static void ep7211_ir_open(dongle_t *self, struct qos_info *qos) { unsigned int syscon1, flags; save_flags(flags); cli(); /* Turn on the SIR encoder. */ syscon1 = clps_readl(SYSCON1); syscon1 |= SYSCON1_SIREN; clps_writel(syscon1, SYSCON1); /* XXX: We should disable modem status interrupts on the first UART (interrupt #14). */ restore_flags(flags); } static void ep7211_ir_close(dongle_t *self) { unsigned int syscon1, flags; save_flags(flags); cli(); /* Turn off the SIR encoder. */ syscon1 = clps_readl(SYSCON1); syscon1 &= ~SYSCON1_SIREN; clps_writel(syscon1, SYSCON1); /* XXX: If we've disabled the modem status interrupts, we should reset them back to their original state. */ restore_flags(flags); } /* * Function ep7211_ir_change_speed (task) * * Change speed of the EP7211 I/R port. We don't really have to do anything * for the EP7211 as long as the rate is being changed at the serial port * level. */ static int ep7211_ir_change_speed(struct irda_task *task) { irda_task_next_state(task, IRDA_TASK_DONE); return 0; } /* * Function ep7211_ir_reset (task) * * Reset the EP7211 I/R. We don't really have to do anything. * */ static int ep7211_ir_reset(struct irda_task *task) { irda_task_next_state(task, IRDA_TASK_DONE); return 0; } /* * Function ep7211_ir_init(void) * * Initialize EP7211 I/R module * */ static int __init ep7211_ir_init(void) { return irda_device_register_dongle(&dongle); } /* * Function ep7211_ir_cleanup(void) * * Cleanup EP7211 I/R module * */ static void __exit ep7211_ir_cleanup(void) { irda_device_unregister_dongle(&dongle); } MODULE_AUTHOR("Jon McClintock <jonm@bluemug.com>"); MODULE_DESCRIPTION("EP7211 I/R driver"); MODULE_LICENSE("GPL"); MODULE_ALIAS("irda-dongle-8"); /* IRDA_EP7211_IR */ module_init(ep7211_ir_init); module_exit(ep7211_ir_cleanup); |