diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 15:20:36 -0700 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /drivers/net/irda/act200l.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'drivers/net/irda/act200l.c')
-rw-r--r-- | drivers/net/irda/act200l.c | 297 |
1 files changed, 297 insertions, 0 deletions
diff --git a/drivers/net/irda/act200l.c b/drivers/net/irda/act200l.c new file mode 100644 index 00000000000..756cd44e857 --- /dev/null +++ b/drivers/net/irda/act200l.c @@ -0,0 +1,297 @@ +/********************************************************************* + * + * Filename: act200l.c + * Version: 0.8 + * Description: Implementation for the ACTiSYS ACT-IR200L dongle + * Status: Experimental. + * Author: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp> + * Created at: Fri Aug 3 17:35:42 2001 + * Modified at: Fri Aug 17 10:22:40 2001 + * Modified by: SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp> + * + * Copyright (c) 2001 SHIMIZU Takuya, All Rights Reserved. + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License as + * published by the Free Software Foundation; either version 2 of + * the License, or (at your option) any later version. + * + ********************************************************************/ + +#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> + +static int act200l_reset(struct irda_task *task); +static void act200l_open(dongle_t *self, struct qos_info *qos); +static void act200l_close(dongle_t *self); +static int act200l_change_speed(struct irda_task *task); + +/* Regsiter 0: Control register #1 */ +#define ACT200L_REG0 0x00 +#define ACT200L_TXEN 0x01 /* Enable transmitter */ +#define ACT200L_RXEN 0x02 /* Enable receiver */ + +/* Register 1: Control register #2 */ +#define ACT200L_REG1 0x10 +#define ACT200L_LODB 0x01 /* Load new baud rate count value */ +#define ACT200L_WIDE 0x04 /* Expand the maximum allowable pulse */ + +/* Register 4: Output Power register */ +#define ACT200L_REG4 0x40 +#define ACT200L_OP0 0x01 /* Enable LED1C output */ +#define ACT200L_OP1 0x02 /* Enable LED2C output */ +#define ACT200L_BLKR 0x04 + +/* Register 5: Receive Mode register */ +#define ACT200L_REG5 0x50 +#define ACT200L_RWIDL 0x01 /* fixed 1.6us pulse mode */ + +/* Register 6: Receive Sensitivity register #1 */ +#define ACT200L_REG6 0x60 +#define ACT200L_RS0 0x01 /* receive threshold bit 0 */ +#define ACT200L_RS1 0x02 /* receive threshold bit 1 */ + +/* Register 7: Receive Sensitivity register #2 */ +#define ACT200L_REG7 0x70 +#define ACT200L_ENPOS 0x04 /* Ignore the falling edge */ + +/* Register 8,9: Baud Rate Dvider register #1,#2 */ +#define ACT200L_REG8 0x80 +#define ACT200L_REG9 0x90 + +#define ACT200L_2400 0x5f +#define ACT200L_9600 0x17 +#define ACT200L_19200 0x0b +#define ACT200L_38400 0x05 +#define ACT200L_57600 0x03 +#define ACT200L_115200 0x01 + +/* Register 13: Control register #3 */ +#define ACT200L_REG13 0xd0 +#define ACT200L_SHDW 0x01 /* Enable access to shadow registers */ + +/* Register 15: Status register */ +#define ACT200L_REG15 0xf0 + +/* Register 21: Control register #4 */ +#define ACT200L_REG21 0x50 +#define ACT200L_EXCK 0x02 /* Disable clock output driver */ +#define ACT200L_OSCL 0x04 /* oscillator in low power, medium accuracy mode */ + +static struct dongle_reg dongle = { + .type = IRDA_ACT200L_DONGLE, + .open = act200l_open, + .close = act200l_close, + .reset = act200l_reset, + .change_speed = act200l_change_speed, + .owner = THIS_MODULE, +}; + +static int __init act200l_init(void) +{ + return irda_device_register_dongle(&dongle); +} + +static void __exit act200l_cleanup(void) +{ + irda_device_unregister_dongle(&dongle); +} + +static void act200l_open(dongle_t *self, struct qos_info *qos) +{ + IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); + + /* Power on the dongle */ + self->set_dtr_rts(self->dev, TRUE, TRUE); + + /* Set the speeds we can accept */ + qos->baud_rate.bits &= IR_9600|IR_19200|IR_38400|IR_57600|IR_115200; + qos->min_turn_time.bits = 0x03; +} + +static void act200l_close(dongle_t *self) +{ + IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); + + /* Power off the dongle */ + self->set_dtr_rts(self->dev, FALSE, FALSE); +} + +/* + * Function act200l_change_speed (dev, speed) + * + * Set the speed for the ACTiSYS ACT-IR200L type dongle. + * + */ +static int act200l_change_speed(struct irda_task *task) +{ + dongle_t *self = (dongle_t *) task->instance; + __u32 speed = (__u32) task->param; + __u8 control[3]; + int ret = 0; + + IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); + + self->speed_task = task; + + switch (task->state) { + case IRDA_TASK_INIT: + if (irda_task_execute(self, act200l_reset, NULL, task, + (void *) speed)) + { + /* Dongle need more time to reset */ + irda_task_next_state(task, IRDA_TASK_CHILD_WAIT); + + /* Give reset 1 sec to finish */ + ret = msecs_to_jiffies(1000); + } + break; + case IRDA_TASK_CHILD_WAIT: + IRDA_WARNING("%s(), resetting dongle timed out!\n", + __FUNCTION__); + ret = -1; + break; + case IRDA_TASK_CHILD_DONE: + /* Clear DTR and set RTS to enter command mode */ + self->set_dtr_rts(self->dev, FALSE, TRUE); + + switch (speed) { + case 9600: + default: + control[0] = ACT200L_REG8 | (ACT200L_9600 & 0x0f); + control[1] = ACT200L_REG9 | ((ACT200L_9600 >> 4) & 0x0f); + break; + case 19200: + control[0] = ACT200L_REG8 | (ACT200L_19200 & 0x0f); + control[1] = ACT200L_REG9 | ((ACT200L_19200 >> 4) & 0x0f); + break; + case 38400: + control[0] = ACT200L_REG8 | (ACT200L_38400 & 0x0f); + control[1] = ACT200L_REG9 | ((ACT200L_38400 >> 4) & 0x0f); + break; + case 57600: + control[0] = ACT200L_REG8 | (ACT200L_57600 & 0x0f); + control[1] = ACT200L_REG9 | ((ACT200L_57600 >> 4) & 0x0f); + break; + case 115200: + control[0] = ACT200L_REG8 | (ACT200L_115200 & 0x0f); + control[1] = ACT200L_REG9 | ((ACT200L_115200 >> 4) & 0x0f); + break; + } + control[2] = ACT200L_REG1 | ACT200L_LODB | ACT200L_WIDE; + + /* Write control bytes */ + self->write(self->dev, control, 3); + irda_task_next_state(task, IRDA_TASK_WAIT); + ret = msecs_to_jiffies(5); + break; + case IRDA_TASK_WAIT: + /* Go back to normal mode */ + self->set_dtr_rts(self->dev, TRUE, TRUE); + + irda_task_next_state(task, IRDA_TASK_DONE); + self->speed_task = NULL; + break; + default: + IRDA_ERROR("%s(), unknown state %d\n", + __FUNCTION__, task->state); + irda_task_next_state(task, IRDA_TASK_DONE); + self->speed_task = NULL; + ret = -1; + break; + } + return ret; +} + +/* + * Function act200l_reset (driver) + * + * Reset the ACTiSYS ACT-IR200L type dongle. + */ +static int act200l_reset(struct irda_task *task) +{ + dongle_t *self = (dongle_t *) task->instance; + __u8 control[9] = { + ACT200L_REG15, + ACT200L_REG13 | ACT200L_SHDW, + ACT200L_REG21 | ACT200L_EXCK | ACT200L_OSCL, + ACT200L_REG13, + ACT200L_REG7 | ACT200L_ENPOS, + ACT200L_REG6 | ACT200L_RS0 | ACT200L_RS1, + ACT200L_REG5 | ACT200L_RWIDL, + ACT200L_REG4 | ACT200L_OP0 | ACT200L_OP1 | ACT200L_BLKR, + ACT200L_REG0 | ACT200L_TXEN | ACT200L_RXEN + }; + int ret = 0; + + IRDA_DEBUG(2, "%s()\n", __FUNCTION__ ); + + self->reset_task = task; + + switch (task->state) { + case IRDA_TASK_INIT: + /* Power on the dongle */ + self->set_dtr_rts(self->dev, TRUE, TRUE); + + irda_task_next_state(task, IRDA_TASK_WAIT1); + ret = msecs_to_jiffies(50); + break; + case IRDA_TASK_WAIT1: + /* Reset the dongle : set RTS low for 25 ms */ + self->set_dtr_rts(self->dev, TRUE, FALSE); + + irda_task_next_state(task, IRDA_TASK_WAIT2); + ret = msecs_to_jiffies(50); + break; + case IRDA_TASK_WAIT2: + /* Clear DTR and set RTS to enter command mode */ + self->set_dtr_rts(self->dev, FALSE, TRUE); + + /* Write control bytes */ + self->write(self->dev, control, 9); + irda_task_next_state(task, IRDA_TASK_WAIT3); + ret = msecs_to_jiffies(15); + break; + case IRDA_TASK_WAIT3: + /* Go back to normal mode */ + self->set_dtr_rts(self->dev, TRUE, TRUE); + + irda_task_next_state(task, IRDA_TASK_DONE); + self->reset_task = NULL; + break; + default: + IRDA_ERROR("%s(), unknown state %d\n", + __FUNCTION__, task->state); + irda_task_next_state(task, IRDA_TASK_DONE); + self->reset_task = NULL; + ret = -1; + break; + } + return ret; +} + +MODULE_AUTHOR("SHIMIZU Takuya <tshimizu@ga2.so-net.ne.jp>"); +MODULE_DESCRIPTION("ACTiSYS ACT-IR200L dongle driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("irda-dongle-10"); /* IRDA_ACT200L_DONGLE */ + +/* + * Function init_module (void) + * + * Initialize ACTiSYS ACT-IR200L module + * + */ +module_init(act200l_init); + +/* + * Function cleanup_module (void) + * + * Cleanup ACTiSYS ACT-IR200L module + * + */ +module_exit(act200l_cleanup); |