From 871480933a1c28f8a9fed4c4d34d06c439a7a422 Mon Sep 17 00:00:00 2001 From: Srikant Patnaik Date: Sun, 11 Jan 2015 12:28:04 +0530 Subject: Moved, renamed, and deleted files The original directory structure was scattered and unorganized. Changes are basically to make it look like kernel structure. --- ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c | 358 ------------------------- 1 file changed, 358 deletions(-) delete mode 100644 ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c (limited to 'ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c') diff --git a/ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c b/ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c deleted file mode 100644 index d50f0678..00000000 --- a/ANDROID_3.4.5/drivers/input/serio/hp_sdc_mlc.c +++ /dev/null @@ -1,358 +0,0 @@ -/* - * Access to HP-HIL MLC through HP System Device Controller. - * - * Copyright (c) 2001 Brian S. Julin - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL"). - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR - * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * - * References: - * HP-HIL Technical Reference Manual. Hewlett Packard Product No. 45918A - * System Device Controller Microprocessor Firmware Theory of Operation - * for Part Number 1820-4784 Revision B. Dwg No. A-1820-4784-2 - * - */ - -#include -#include -#include -#include -#include -#include -#include -#include - -#define PREFIX "HP SDC MLC: " - -static hil_mlc hp_sdc_mlc; - -MODULE_AUTHOR("Brian S. Julin "); -MODULE_DESCRIPTION("Glue for onboard HIL MLC in HP-PARISC machines"); -MODULE_LICENSE("Dual BSD/GPL"); - -static struct hp_sdc_mlc_priv_s { - int emtestmode; - hp_sdc_transaction trans; - u8 tseq[16]; - int got5x; -} hp_sdc_mlc_priv; - -/************************* Interrupt context ******************************/ -static void hp_sdc_mlc_isr (int irq, void *dev_id, - uint8_t status, uint8_t data) -{ - int idx; - hil_mlc *mlc = &hp_sdc_mlc; - - write_lock(&mlc->lock); - if (mlc->icount < 0) { - printk(KERN_WARNING PREFIX "HIL Overflow!\n"); - up(&mlc->isem); - goto out; - } - idx = 15 - mlc->icount; - if ((status & HP_SDC_STATUS_IRQMASK) == HP_SDC_STATUS_HILDATA) { - mlc->ipacket[idx] |= data | HIL_ERR_INT; - mlc->icount--; - if (hp_sdc_mlc_priv.got5x || !idx) - goto check; - if ((mlc->ipacket[idx - 1] & HIL_PKT_ADDR_MASK) != - (mlc->ipacket[idx] & HIL_PKT_ADDR_MASK)) { - mlc->ipacket[idx] &= ~HIL_PKT_ADDR_MASK; - mlc->ipacket[idx] |= (mlc->ipacket[idx - 1] - & HIL_PKT_ADDR_MASK); - } - goto check; - } - /* We know status is 5X */ - if (data & HP_SDC_HIL_ISERR) - goto err; - mlc->ipacket[idx] = - (data & HP_SDC_HIL_R1MASK) << HIL_PKT_ADDR_SHIFT; - hp_sdc_mlc_priv.got5x = 1; - goto out; - - check: - hp_sdc_mlc_priv.got5x = 0; - if (mlc->imatch == 0) - goto done; - if ((mlc->imatch == (HIL_ERR_INT | HIL_PKT_CMD | HIL_CMD_POL)) - && (mlc->ipacket[idx] == (mlc->imatch | idx))) - goto done; - if (mlc->ipacket[idx] == mlc->imatch) - goto done; - goto out; - - err: - printk(KERN_DEBUG PREFIX "err code %x\n", data); - - switch (data) { - case HP_SDC_HIL_RC_DONE: - printk(KERN_WARNING PREFIX "Bastard SDC reconfigured loop!\n"); - break; - - case HP_SDC_HIL_ERR: - mlc->ipacket[idx] |= HIL_ERR_INT | HIL_ERR_PERR | - HIL_ERR_FERR | HIL_ERR_FOF; - break; - - case HP_SDC_HIL_TO: - mlc->ipacket[idx] |= HIL_ERR_INT | HIL_ERR_LERR; - break; - - case HP_SDC_HIL_RC: - printk(KERN_WARNING PREFIX "Bastard SDC decided to reconfigure loop!\n"); - break; - - default: - printk(KERN_WARNING PREFIX "Unknown HIL Error status (%x)!\n", data); - break; - } - - /* No more data will be coming due to an error. */ - done: - tasklet_schedule(mlc->tasklet); - up(&mlc->isem); - out: - write_unlock(&mlc->lock); -} - - -/******************** Tasklet or userspace context functions ****************/ - -static int hp_sdc_mlc_in(hil_mlc *mlc, suseconds_t timeout) -{ - struct hp_sdc_mlc_priv_s *priv; - int rc = 2; - - priv = mlc->priv; - - /* Try to down the semaphore */ - if (down_trylock(&mlc->isem)) { - struct timeval tv; - if (priv->emtestmode) { - mlc->ipacket[0] = - HIL_ERR_INT | (mlc->opacket & - (HIL_PKT_CMD | - HIL_PKT_ADDR_MASK | - HIL_PKT_DATA_MASK)); - mlc->icount = 14; - /* printk(KERN_DEBUG PREFIX ">[%x]\n", mlc->ipacket[0]); */ - goto wasup; - } - do_gettimeofday(&tv); - tv.tv_usec += USEC_PER_SEC * (tv.tv_sec - mlc->instart.tv_sec); - if (tv.tv_usec - mlc->instart.tv_usec > mlc->intimeout) { - /* printk("!%i %i", - tv.tv_usec - mlc->instart.tv_usec, - mlc->intimeout); - */ - rc = 1; - up(&mlc->isem); - } - goto done; - } - wasup: - up(&mlc->isem); - rc = 0; - done: - return rc; -} - -static int hp_sdc_mlc_cts(hil_mlc *mlc) -{ - struct hp_sdc_mlc_priv_s *priv; - - priv = mlc->priv; - - /* Try to down the semaphores -- they should be up. */ - BUG_ON(down_trylock(&mlc->isem)); - BUG_ON(down_trylock(&mlc->osem)); - - up(&mlc->isem); - up(&mlc->osem); - - if (down_trylock(&mlc->csem)) { - if (priv->trans.act.semaphore != &mlc->csem) - goto poll; - else - goto busy; - } - - if (!(priv->tseq[4] & HP_SDC_USE_LOOP)) - goto done; - - poll: - priv->trans.act.semaphore = &mlc->csem; - priv->trans.actidx = 0; - priv->trans.idx = 1; - priv->trans.endidx = 5; - priv->tseq[0] = - HP_SDC_ACT_POSTCMD | HP_SDC_ACT_DATAIN | HP_SDC_ACT_SEMAPHORE; - priv->tseq[1] = HP_SDC_CMD_READ_USE; - priv->tseq[2] = 1; - priv->tseq[3] = 0; - priv->tseq[4] = 0; - __hp_sdc_enqueue_transaction(&priv->trans); - busy: - return 1; - done: - priv->trans.act.semaphore = &mlc->osem; - up(&mlc->csem); - return 0; -} - -static void hp_sdc_mlc_out(hil_mlc *mlc) -{ - struct hp_sdc_mlc_priv_s *priv; - - priv = mlc->priv; - - /* Try to down the semaphore -- it should be up. */ - BUG_ON(down_trylock(&mlc->osem)); - - if (mlc->opacket & HIL_DO_ALTER_CTRL) - goto do_control; - - do_data: - if (priv->emtestmode) { - up(&mlc->osem); - return; - } - /* Shouldn't be sending commands when loop may be busy */ - BUG_ON(down_trylock(&mlc->csem)); - up(&mlc->csem); - - priv->trans.actidx = 0; - priv->trans.idx = 1; - priv->trans.act.semaphore = &mlc->osem; - priv->trans.endidx = 6; - priv->tseq[0] = - HP_SDC_ACT_DATAREG | HP_SDC_ACT_POSTCMD | HP_SDC_ACT_SEMAPHORE; - priv->tseq[1] = 0x7; - priv->tseq[2] = - (mlc->opacket & - (HIL_PKT_ADDR_MASK | HIL_PKT_CMD)) - >> HIL_PKT_ADDR_SHIFT; - priv->tseq[3] = - (mlc->opacket & HIL_PKT_DATA_MASK) - >> HIL_PKT_DATA_SHIFT; - priv->tseq[4] = 0; /* No timeout */ - if (priv->tseq[3] == HIL_CMD_DHR) - priv->tseq[4] = 1; - priv->tseq[5] = HP_SDC_CMD_DO_HIL; - goto enqueue; - - do_control: - priv->emtestmode = mlc->opacket & HIL_CTRL_TEST; - - /* we cannot emulate this, it should not be used. */ - BUG_ON((mlc->opacket & (HIL_CTRL_APE | HIL_CTRL_IPF)) == HIL_CTRL_APE); - - if ((mlc->opacket & HIL_CTRL_ONLY) == HIL_CTRL_ONLY) - goto control_only; - - /* Should not send command/data after engaging APE */ - BUG_ON(mlc->opacket & HIL_CTRL_APE); - - /* Disengaging APE this way would not be valid either since - * the loop must be allowed to idle. - * - * So, it works out that we really never actually send control - * and data when using SDC, we just send the data. - */ - goto do_data; - - control_only: - priv->trans.actidx = 0; - priv->trans.idx = 1; - priv->trans.act.semaphore = &mlc->osem; - priv->trans.endidx = 4; - priv->tseq[0] = - HP_SDC_ACT_PRECMD | HP_SDC_ACT_DATAOUT | HP_SDC_ACT_SEMAPHORE; - priv->tseq[1] = HP_SDC_CMD_SET_LPC; - priv->tseq[2] = 1; - /* priv->tseq[3] = (mlc->ddc + 1) | HP_SDC_LPS_ACSUCC; */ - priv->tseq[3] = 0; - if (mlc->opacket & HIL_CTRL_APE) { - priv->tseq[3] |= HP_SDC_LPC_APE_IPF; - BUG_ON(down_trylock(&mlc->csem)); - } - enqueue: - hp_sdc_enqueue_transaction(&priv->trans); -} - -static int __init hp_sdc_mlc_init(void) -{ - hil_mlc *mlc = &hp_sdc_mlc; - int err; - -#ifdef __mc68000__ - if (!MACH_IS_HP300) - return -ENODEV; -#endif - - printk(KERN_INFO PREFIX "Registering the System Domain Controller's HIL MLC.\n"); - - hp_sdc_mlc_priv.emtestmode = 0; - hp_sdc_mlc_priv.trans.seq = hp_sdc_mlc_priv.tseq; - hp_sdc_mlc_priv.trans.act.semaphore = &mlc->osem; - hp_sdc_mlc_priv.got5x = 0; - - mlc->cts = &hp_sdc_mlc_cts; - mlc->in = &hp_sdc_mlc_in; - mlc->out = &hp_sdc_mlc_out; - mlc->priv = &hp_sdc_mlc_priv; - - err = hil_mlc_register(mlc); - if (err) { - printk(KERN_WARNING PREFIX "Failed to register MLC structure with hil_mlc\n"); - return err; - } - - if (hp_sdc_request_hil_irq(&hp_sdc_mlc_isr)) { - printk(KERN_WARNING PREFIX "Request for raw HIL ISR hook denied\n"); - if (hil_mlc_unregister(mlc)) - printk(KERN_ERR PREFIX "Failed to unregister MLC structure with hil_mlc.\n" - "This is bad. Could cause an oops.\n"); - return -EBUSY; - } - - return 0; -} - -static void __exit hp_sdc_mlc_exit(void) -{ - hil_mlc *mlc = &hp_sdc_mlc; - - if (hp_sdc_release_hil_irq(&hp_sdc_mlc_isr)) - printk(KERN_ERR PREFIX "Failed to release the raw HIL ISR hook.\n" - "This is bad. Could cause an oops.\n"); - - if (hil_mlc_unregister(mlc)) - printk(KERN_ERR PREFIX "Failed to unregister MLC structure with hil_mlc.\n" - "This is bad. Could cause an oops.\n"); -} - -module_init(hp_sdc_mlc_init); -module_exit(hp_sdc_mlc_exit); -- cgit