litmus-rt.git - The LITMUS^RT kernel.

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Diffstat (limited to 'drivers/ide/ide-io.c')

-rw-r--r--

1 files changed, 0 insertions, 37 deletions


diff --git a/drivers/ide/ide-io.c b/drivers/ide/ide-io.c index 16e47989fcfd..74d1a3e68252 100644 --- a/drivers/ide/ide-io.c +++ b/drivers/ide/ide-io.c
@@ -490,43 +490,6 @@ static ide_startstop_t execute_drive_cmd (ide_drive_t *drive,
490	return ide_stopped;	490	return ide_stopped;
491	}	491	}
492		492
493	int ide_devset_execute(ide_drive_t drive, const struct ide_devset setting,
494	int arg)
495	{
496	struct request_queue *q = drive->queue;
497	struct request *rq;
498	int ret = 0;
499
500	if (!(setting->flags & DS_SYNC))
501	return setting->set(drive, arg);
502
503	rq = blk_get_request(q, READ, __GFP_WAIT);
504	rq->cmd_type = REQ_TYPE_SPECIAL;
505	rq->cmd_len = 5;
506	rq->cmd[0] = REQ_DEVSET_EXEC;
507	(int )&rq->cmd[1] = arg;
508	rq->special = setting->set;
509
510	if (blk_execute_rq(q, NULL, rq, 0))
511	ret = rq->errors;
512	blk_put_request(rq);
513
514	return ret;
515	}
516
517	static ide_startstop_t ide_do_devset(ide_drive_t drive, struct request rq)
518	{
519	int err, (setfunc)(ide_drive_t , int) = rq->special;
520
521	err = setfunc(drive, (int )&rq->cmd[1]);
522	if (err)
523	rq->errors = err;
524	else
525	err = 1;
526	ide_end_request(drive, err, 0);
527	return ide_stopped;
528	}
529
530	static ide_startstop_t ide_special_rq(ide_drive_t drive, struct request rq)	493	static ide_startstop_t ide_special_rq(ide_drive_t drive, struct request rq)
531	{	494	{
532	u8 cmd = rq->cmd[0];	495	u8 cmd = rq->cmd[0];

/* * pca9532.c - 16-bit Led dimmer * * Copyright (C) 2008 Riku Voipio * * 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; version 2 of the License. * * Datasheet: http://www.nxp.com/acrobat/datasheets/PCA9532_3.pdf * */ #include <linux/module.h> #include <linux/i2c.h> #include <linux/slab.h> #include <linux/leds.h> #include <linux/input.h> #include <linux/mutex.h> #include <linux/workqueue.h> #include <linux/leds-pca9532.h> #define PCA9532_REG_PSC(i) (0x2+(i)*2) #define PCA9532_REG_PWM(i) (0x3+(i)*2) #define PCA9532_REG_LS0 0x6 #define LED_REG(led) ((led>>2)+PCA9532_REG_LS0) #define LED_NUM(led) (led & 0x3) #define ldev_to_led(c) container_of(c, struct pca9532_led, ldev) struct pca9532_data { struct i2c_client *client; struct pca9532_led leds[16]; struct mutex update_lock; struct input_dev *idev; struct work_struct work; u8 pwm[2]; u8 psc[2]; }; static int pca9532_probe(struct i2c_client *client, const struct i2c_device_id *id); static int pca9532_remove(struct i2c_client *client); static const struct i2c_device_id pca9532_id[] = { { "pca9532", 0 }, { } }; MODULE_DEVICE_TABLE(i2c, pca9532_id); static struct i2c_driver pca9532_driver = { .driver = { .name = "pca9532", }, .probe = pca9532_probe, .remove = pca9532_remove, .id_table = pca9532_id, }; /* We have two pwm/blinkers, but 16 possible leds to drive. Additionally, * the clever Thecus people are using one pwm to drive the beeper. So, * as a compromise we average one pwm to the values requested by all * leds that are not ON/OFF. * */ static int pca9532_calcpwm(struct i2c_client *client, int pwm, int blink, enum led_brightness value) { int a = 0, b = 0, i = 0; struct pca9532_data *data = i2c_get_clientdata(client); for (i = 0; i < 16; i++) { if (data->leds[i].type == PCA9532_TYPE_LED && data->leds[i].state == PCA9532_PWM0+pwm) { a++; b += data->leds[i].ldev.brightness; } } if (a == 0) { dev_err(&client->dev, "fear of division by zero %d/%d, wanted %d\n", b, a, value); return -EINVAL; } b = b/a; if (b > 0xFF) return -EINVAL; data->pwm[pwm] = b; data->psc[pwm] = blink; return 0; } static int pca9532_setpwm(struct i2c_client *client, int pwm) { struct pca9532_data *data = i2c_get_clientdata(client); mutex_lock(&data->update_lock); i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(pwm), data->pwm[pwm]); i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(pwm), data->psc[pwm]); mutex_unlock(&data->update_lock); return 0; } /* Set LED routing */ static void pca9532_setled(struct pca9532_led *led) { struct i2c_client *client = led->client; struct pca9532_data *data = i2c_get_clientdata(client); char reg; mutex_lock(&data->update_lock); reg = i2c_smbus_read_byte_data(client, LED_REG(led->id)); /* zero led bits */ reg = reg & ~(0x3<<LED_NUM(led->id)*2); /* set the new value */ reg = reg | (led->state << LED_NUM(led->id)*2); i2c_smbus_write_byte_data(client, LED_REG(led->id), reg); mutex_unlock(&data->update_lock); } static void pca9532_set_brightness(struct led_classdev *led_cdev, enum led_brightness value) { int err = 0; struct pca9532_led *led = ldev_to_led(led_cdev); if (value == LED_OFF) led->state = PCA9532_OFF; else if (value == LED_FULL) led->state = PCA9532_ON; else { led->state = PCA9532_PWM0; /* Thecus: hardcode one pwm */ err = pca9532_calcpwm(led->client, 0, 0, value); if (err) return; /* XXX: led api doesn't allow error code? */ } schedule_work(&led->work); } static int pca9532_set_blink(struct led_classdev *led_cdev, unsigned long *delay_on, unsigned long *delay_off) { struct pca9532_led *led = ldev_to_led(led_cdev); struct i2c_client *client = led->client; int psc; int err = 0; if (*delay_on == 0 && *delay_off == 0) { /* led subsystem ask us for a blink rate */ *delay_on = 1000; *delay_off = 1000; } if (*delay_on != *delay_off || *delay_on > 1690 || *delay_on < 6) return -EINVAL; /* Thecus specific: only use PSC/PWM 0 */ psc = (*delay_on * 152-1)/1000; err = pca9532_calcpwm(client, 0, psc, led_cdev->brightness); if (err) return err; schedule_work(&led->work); return 0; } static int pca9532_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) { struct pca9532_data *data = input_get_drvdata(dev); if (!(type == EV_SND && (code == SND_BELL || code == SND_TONE))) return -1; /* XXX: allow different kind of beeps with psc/pwm modifications */ if (value > 1 && value < 32767) data->pwm[1] = 127; else data->pwm[1] = 0; schedule_work(&data->work); return 0; } static void pca9532_input_work(struct work_struct *work) { struct pca9532_data *data; data = container_of(work, struct pca9532_data, work); mutex_lock(&data->update_lock); i2c_smbus_write_byte_data(data->client, PCA9532_REG_PWM(1), data->pwm[1]); mutex_unlock(&data->update_lock); } static void pca9532_led_work(struct work_struct *work) { struct pca9532_led *led; led = container_of(work, struct pca9532_led, work); if (led->state == PCA9532_PWM0) pca9532_setpwm(led->client, 0); pca9532_setled(led); } static void pca9532_destroy_devices(struct pca9532_data *data, int n_devs) { int i = n_devs; if (!data) return; while (--i >= 0) { switch (data->leds[i].type) { case PCA9532_TYPE_NONE: break; case PCA9532_TYPE_LED: led_classdev_unregister(&data->leds[i].ldev); cancel_work_sync(&data->leds[i].work); break; case PCA9532_TYPE_N2100_BEEP: if (data->idev != NULL) { input_unregister_device(data->idev); cancel_work_sync(&data->work); data->idev = NULL; } break; } } } static int pca9532_configure(struct i2c_client *client, struct pca9532_data *data, struct pca9532_platform_data *pdata) { int i, err = 0; for (i = 0; i < 2; i++) { data->pwm[i] = pdata->pwm[i]; data->psc[i] = pdata->psc[i]; i2c_smbus_write_byte_data(client, PCA9532_REG_PWM(i), data->pwm[i]); i2c_smbus_write_byte_data(client, PCA9532_REG_PSC(i),


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