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

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author	Matthew Ranostay <mranostay@embeddedalley.com>	2008-04-14 07:32:54 -0400
committer	Takashi Iwai <tiwai@suse.de>	2008-04-24 06:00:35 -0400
commit	0fc9dec46fae19da9899c580a6b870202103f8bb (patch)
tree	e744a618b904a65969ee27fd3ed441e761bfbe60 /sound
parent	780c8be4ab6c7baf5cdfa1102f56480acb8a2479 (diff)

[ALSA] hda: EAPD power management

Power management support for EAPD enabled laptops, when headphones are sensed it pulls the EAPD GPIO line low to power it down. Signed-off-by: Matthew Ranostay <mranostay@embeddedalley.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>

Diffstat (limited to 'sound')

-rw-r--r--

sound/pci/hda/patch_sigmatel.c

1 files changed, 19 insertions, 6 deletions

         unsigned int hp_detect: 1;
         /* gpio lines */
+        unsigned int eapd_mask;
         unsigned int gpio_mask;
         unsigned int gpio_dir;
         unsigned int gpio_data;
                 for (i = 0; i < cfg->speaker_outs; i++)
                         stac92xx_reset_pinctl(codec, cfg->speaker_pins[i],
                                                 AC_PINCTL_OUT_EN);
+                if (spec->eapd_mask)
+                        stac_gpio_set(codec, spec->gpio_mask,
+                                spec->gpio_dir, spec->gpio_data &
+                                ~spec->eapd_mask);
         } else {
                 /* enable lineouts, disable hp */
                 for (i = 0; i < cfg->line_outs; i++)
                 for (i = 0; i < cfg->speaker_outs; i++)
                         stac92xx_set_pinctl(codec, cfg->speaker_pins[i],
                                                 AC_PINCTL_OUT_EN);
+                if (spec->eapd_mask)
+                        stac_gpio_set(codec, spec->gpio_mask,
+                                spec->gpio_dir, spec->gpio_data |
+                                spec->eapd_mask);
         }
 }
         spec->num_dmuxes = ARRAY_SIZE(stac92hd73xx_dmux_nids);
         spec->dinput_mux = &stac92hd73xx_dmux;
         /* GPIO0 High = Enable EAPD */
-        spec->gpio_mask = spec->gpio_dir = 0x1;
+        spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x1;
         spec->gpio_data = 0x01;
         switch (spec->board_config) {
         spec->aloopback_shift = 0;
         /* GPIO0 High = EAPD */
-        spec->gpio_mask = spec->gpio_dir = spec->gpio_data = 0x1;
+        spec->gpio_mask = 0x01;
+        spec->gpio_dir = 0x01;
+        spec->gpio_mask = 0x01;
+        spec->gpio_data = 0x01;
         spec->mux_nids = stac92hd71bxx_mux_nids;
         spec->adc_nids = stac92hd71bxx_adc_nids;
         case STAC_D965_3ST:
         case STAC_D965_5ST:
                 /* GPIO0 High = Enable EAPD */
-                spec->gpio_mask = spec->gpio_dir = 0x01;
+                spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x01;
                 spec->gpio_data = 0x01;
                 spec->num_dmics = 0;
                 /* fallthru */
         case STAC_DELL_3ST:
                 /* GPIO2 High = Enable EAPD */
-                spec->gpio_mask = spec->gpio_dir = 0x04;
+                spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x04;
                 spec->gpio_data = 0x04;
                 spec->dmic_nids = stac927x_dmic_nids;
                 spec->num_dmics = STAC927X_NUM_DMICS;
                 break;
         default:
                 /* GPIO0 High = Enable EAPD */
-                spec->gpio_mask = spec->gpio_dir = 0x1;
+                spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x1;
                 spec->gpio_data = 0x01;
                 spec->num_dmics = 0;
                                           (AC_USRSP_EN | STAC_HP_EVENT));
                 spec->gpio_dir = 0x0b;
+                spec->eapd_mask = 0x01;
                 spec->gpio_mask = 0x1b;
                 spec->gpio_mute = 0x10;
                 /* GPIO0 High = EAPD, GPIO1 Low = Headphone Mute,
                 break;
         default:
                 /* GPIO0 High = EAPD */
-                spec->gpio_mask = spec->gpio_dir = 0x1;
+                spec->eapd_mask = spec->gpio_mask = spec->gpio_dir = 0x1;
                 spec->gpio_data = 0x01;
                 break;
         }

/*****************************************************************************/ /* * moxa.c -- MOXA Intellio family multiport serial driver. * * Copyright (C) 1999-2000 Moxa Technologies (support@moxa.com). * Copyright (c) 2007 Jiri Slaby <jirislaby@gmail.com> * * This code is loosely based on the Linux serial driver, written by * Linus Torvalds, Theodore T'so and others. * * 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. */ /* * MOXA Intellio Series Driver * for : LINUX * date : 1999/1/7 * version : 5.1 */ #include <linux/module.h> #include <linux/types.h> #include <linux/mm.h> #include <linux/ioport.h> #include <linux/errno.h> #include <linux/firmware.h> #include <linux/signal.h> #include <linux/sched.h> #include <linux/timer.h> #include <linux/interrupt.h> #include <linux/tty.h> #include <linux/tty_flip.h> #include <linux/major.h> #include <linux/string.h> #include <linux/fcntl.h> #include <linux/ptrace.h> #include <linux/serial.h> #include <linux/tty_driver.h> #include <linux/delay.h> #include <linux/pci.h> #include <linux/init.h> #include <linux/bitops.h> #include <linux/slab.h> #include <linux/ratelimit.h> #include <asm/io.h> #include <asm/uaccess.h> #include "moxa.h" #define MOXA_VERSION "6.0k" #define MOXA_FW_HDRLEN 32 #define MOXAMAJOR 172 #define MAX_BOARDS 4 /* Don't change this value */ #define MAX_PORTS_PER_BOARD 32 /* Don't change this value */ #define MAX_PORTS (MAX_BOARDS * MAX_PORTS_PER_BOARD) #define MOXA_IS_320(brd) ((brd)->boardType == MOXA_BOARD_C320_ISA || \ (brd)->boardType == MOXA_BOARD_C320_PCI) /* * Define the Moxa PCI vendor and device IDs. */ #define MOXA_BUS_TYPE_ISA 0 #define MOXA_BUS_TYPE_PCI 1 enum { MOXA_BOARD_C218_PCI = 1, MOXA_BOARD_C218_ISA, MOXA_BOARD_C320_PCI, MOXA_BOARD_C320_ISA, MOXA_BOARD_CP204J, }; static char *moxa_brdname[] = { "C218 Turbo PCI series", "C218 Turbo ISA series", "C320 Turbo PCI series", "C320 Turbo ISA series", "CP-204J series", }; #ifdef CONFIG_PCI static struct pci_device_id moxa_pcibrds[] = { { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C218), .driver_data = MOXA_BOARD_C218_PCI }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_C320), .driver_data = MOXA_BOARD_C320_PCI }, { PCI_DEVICE(PCI_VENDOR_ID_MOXA, PCI_DEVICE_ID_MOXA_CP204J), .driver_data = MOXA_BOARD_CP204J }, { 0 } }; MODULE_DEVICE_TABLE(pci, moxa_pcibrds); #endif /* CONFIG_PCI */ struct moxa_port; static struct moxa_board_conf { int boardType; int numPorts; int busType; unsigned int ready; struct moxa_port *ports; void __iomem *basemem; void __iomem *intNdx; void __iomem *intPend; void __iomem *intTable; } moxa_boards[MAX_BOARDS]; struct mxser_mstatus { tcflag_t cflag; int cts; int dsr; int ri; int dcd; }; struct moxaq_str { int inq; int outq; }; struct moxa_port { struct tty_port port; struct moxa_board_conf *board; void __iomem *tableAddr; int type; int cflag; unsigned long statusflags; u8 DCDState; /* Protected by the port lock */ u8 lineCtrl; u8 lowChkFlag; }; struct mon_str { int tick; int rxcnt[MAX_PORTS]; int txcnt[MAX_PORTS]; }; /* statusflags */ #define TXSTOPPED 1 #define LOWWAIT 2 #define EMPTYWAIT 3 #define SERIAL_DO_RESTART #define WAKEUP_CHARS 256 static int ttymajor = MOXAMAJOR; static struct mon_str moxaLog; static unsigned int moxaFuncTout = HZ / 2; static unsigned int moxaLowWaterChk; static DEFINE_MUTEX(moxa_openlock); static DEFINE_SPINLOCK(moxa_lock); static unsigned long baseaddr[MAX_BOARDS]; static unsigned int type[MAX_BOARDS]; static unsigned int numports[MAX_BOARDS]; MODULE_AUTHOR("William Chen"); MODULE_DESCRIPTION("MOXA Intellio Family Multiport Board Device Driver"); MODULE_LICENSE("GPL"); MODULE_FIRMWARE("c218tunx.cod"); MODULE_FIRMWARE("cp204unx.cod"); MODULE_FIRMWARE("c320tunx.cod"); module_param_array(type, uint, NULL, 0); MODULE_PARM_DESC(type, "card type: C218=2, C320=4"); module_param_array(baseaddr, ulong, NULL, 0); MODULE_PARM_DESC(baseaddr, "base address"); module_param_array(numports, uint, NULL, 0); MODULE_PARM_DESC(numports, "numports (ignored for C218)"); module_param(ttymajor, int, 0); /* * static functions: */ static int moxa_open(struct tty_struct *, struct file *); static void moxa_close(struct tty_struct *, struct file *); static int moxa_write(struct tty_struct *, const unsigned char *, int); static int moxa_write_room(struct tty_struct *); static void moxa_flush_buffer(struct tty_struct *); static int moxa_chars_in_buffer(struct tty_struct *); static void moxa_set_termios(struct tty_struct *, struct ktermios *); static void moxa_stop(struct tty_struct *); static void moxa_start(struct tty_struct *); static void moxa_hangup(struct tty_struct *); static int moxa_tiocmget(struct tty_struct *tty); static int moxa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear); static void moxa_poll(unsigned long); static void moxa_set_tty_param(struct tty_struct *, struct ktermios *); static void moxa_shutdown(struct tty_port *); static int moxa_carrier_raised(struct tty_port *); static void moxa_dtr_rts(struct tty_port *, int); /* * moxa board interface functions: */ static void MoxaPortEnable(struct moxa_port *); static void MoxaPortDisable(struct moxa_port *); static int MoxaPortSetTermio(struct moxa_port *, struct ktermios *, speed_t); static int MoxaPortGetLineOut(struct moxa_port *, int *, int *); static void MoxaPortLineCtrl(struct moxa_port *, int, int); static void MoxaPortFlowCtrl(struct moxa_port *, int, int, int, int, int); static int MoxaPortLineStatus(struct moxa_port *); static void MoxaPortFlushData(struct moxa_port *, int); static int MoxaPortWriteData(struct tty_struct *, const unsigned char *, int); static int MoxaPortReadData(struct moxa_port *); static int MoxaPortTxQueue(struct moxa_port *); static int MoxaPortRxQueue(struct moxa_port *); static int MoxaPortTxFree(struct moxa_port *); static void MoxaPortTxDisable(struct moxa_port *); static void MoxaPortTxEnable(struct moxa_port *); static int moxa_get_serial_info(struct moxa_port *, struct serial_struct __user *); static int moxa_set_serial_info(struct moxa_port *, struct serial_struct __user *); static void MoxaSetFifo(struct moxa_port *port, int enable); /* * I/O functions */ static DEFINE_SPINLOCK(moxafunc_lock); static void moxa_wait_finish(void __iomem *ofsAddr) { unsigned long end = jiffies + moxaFuncTout; while (readw(ofsAddr + FuncCode) != 0) if (time_after(jiffies, end)) return; if (readw(ofsAddr + FuncCode) != 0) printk_ratelimited(KERN_WARNING "moxa function expired\n"); } static void moxafunc(void __iomem *ofsAddr, u16 cmd, u16 arg) { unsigned long flags; spin_lock_irqsave(&moxafunc_lock, flags); writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); moxa_wait_finish(ofsAddr); spin_unlock_irqrestore(&moxafunc_lock, flags); } static int moxafuncret(void __iomem *ofsAddr, u16 cmd, u16 arg) { unsigned long flags; u16 ret; spin_lock_irqsave(&moxafunc_lock, flags); writew(arg, ofsAddr + FuncArg); writew(cmd, ofsAddr + FuncCode); moxa_wait_finish(ofsAddr); ret = readw(ofsAddr + FuncArg); spin_unlock_irqrestore(&moxafunc_lock, flags); return ret; } static void moxa_low_water_check(void __iomem *ofsAddr) { u16 rptr, wptr, mask, len; if (readb(ofsAddr + FlagStat) & Xoff_state) { rptr = readw(ofsAddr + RXrptr); wptr = readw(ofsAddr + RXwptr); mask = readw(ofsAddr + RX_mask); len = (wptr - rptr) & mask; if (len <= Low_water) moxafunc(ofsAddr, FC_SendXon, 0); } } /* * TTY operations */ static int moxa_ioctl(struct tty_struct *tty, unsigned int cmd, unsigned long arg) { struct moxa_port *ch = tty->driver_data; void __user *argp = (void __user *)arg; int status, ret = 0; if (tty->index == MAX_PORTS) { if (cmd != MOXA_GETDATACOUNT && cmd != MOXA_GET_IOQUEUE && cmd != MOXA_GETMSTATUS) return -EINVAL; } else if (!ch) return -ENODEV; switch (cmd) { case MOXA_GETDATACOUNT: moxaLog.tick = jiffies; if (copy_to_user(argp, &moxaLog, sizeof(moxaLog))) ret = -EFAULT; break; case MOXA_FLUSH_QUEUE: MoxaPortFlushData(ch, arg); break; case MOXA_GET_IOQUEUE: { struct moxaq_str __user *argm = argp; struct moxaq_str tmp; struct moxa_port *p; unsigned int i, j; for (i = 0; i < MAX_BOARDS; i++) { p = moxa_boards[i].ports; for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { memset(&tmp, 0, sizeof(tmp)); spin_lock_bh(&moxa_lock); if (moxa_boards[i].ready) { tmp.inq = MoxaPortRxQueue(p); tmp.outq = MoxaPortTxQueue(p); } spin_unlock_bh(&moxa_lock); if (copy_to_user(argm, &tmp, sizeof(tmp))) return -EFAULT; } } break; } case MOXA_GET_OQUEUE: status = MoxaPortTxQueue(ch); ret = put_user(status, (unsigned long __user *)argp); break; case MOXA_GET_IQUEUE: status = MoxaPortRxQueue(ch); ret = put_user(status, (unsigned long __user *)argp); break; case MOXA_GETMSTATUS: { struct mxser_mstatus __user *argm = argp; struct mxser_mstatus tmp; struct moxa_port *p; unsigned int i, j; for (i = 0; i < MAX_BOARDS; i++) { p = moxa_boards[i].ports; for (j = 0; j < MAX_PORTS_PER_BOARD; j++, p++, argm++) { struct tty_struct *ttyp; memset(&tmp, 0, sizeof(tmp)); spin_lock_bh(&moxa_lock); if (!moxa_boards[i].ready) { spin_unlock_bh(&moxa_lock); goto copy; } status = MoxaPortLineStatus(p); spin_unlock_bh(&moxa_lock); if (status & 1) tmp.cts = 1; if (status & 2) tmp.dsr = 1; if (status & 4) tmp.dcd = 1; ttyp = tty_port_tty_get(&p->port); if (!ttyp || !ttyp->termios) tmp.cflag = p->cflag; else tmp.cflag = ttyp->termios->c_cflag; tty_kref_put(ttyp); copy: if (copy_to_user(argm, &tmp, sizeof(tmp))) return -EFAULT; } } break; } case TIOCGSERIAL: mutex_lock(&ch->port.mutex); ret = moxa_get_serial_info(ch, argp); mutex_unlock(&ch->port.mutex); break; case TIOCSSERIAL: mutex_lock(&ch->port.mutex); ret = moxa_set_serial_info(ch, argp); mutex_unlock(&ch->port.mutex); break; default: ret = -ENOIOCTLCMD; } return ret; } static int moxa_break_ctl(struct tty_struct *tty, int state) { struct moxa_port *port = tty->driver_data; moxafunc(port->tableAddr, state ? FC_SendBreak : FC_StopBreak, Magic_code); return 0; } static const struct tty_operations moxa_ops = { .open = moxa_open, .close = moxa_close, .write = moxa_write, .write_room = moxa_write_room, .flush_buffer = moxa_flush_buffer, .chars_in_buffer = moxa_chars_in_buffer, .ioctl = moxa_ioctl, .set_termios = moxa_set_termios, .stop = moxa_stop, .start = moxa_start, .hangup = moxa_hangup, .break_ctl = moxa_break_ctl, .tiocmget = moxa_tiocmget, .tiocmset = moxa_tiocmset, }; static const struct tty_port_operations moxa_port_ops = { .carrier_raised = moxa_carrier_raised, .dtr_rts = moxa_dtr_rts, .shutdown = moxa_shutdown, }; static struct tty_driver *moxaDriver; static DEFINE_TIMER(moxaTimer, moxa_poll, 0, 0); /* * HW init */ static int moxa_check_fw_model(struct moxa_board_conf *brd, u8 model) { switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: if (model != 1) goto err; break; case MOXA_BOARD_CP204J: if (model != 3) goto err; break; default: if (model != 2) goto err; break; } return 0; err: return -EINVAL; } static int moxa_check_fw(const void *ptr) { const __le16 *lptr = ptr; if (*lptr != cpu_to_le16(0x7980)) return -EINVAL; return 0; } static int moxa_load_bios(struct moxa_board_conf *brd, const u8 *buf, size_t len) { void __iomem *baseAddr = brd->basemem; u16 tmp; writeb(HW_reset, baseAddr + Control_reg); /* reset */ msleep(10); memset_io(baseAddr, 0, 4096); memcpy_toio(baseAddr, buf, len); /* download BIOS */ writeb(0, baseAddr + Control_reg); /* restart */ msleep(2000); switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: tmp = readw(baseAddr + C218_key); if (tmp != C218_KeyCode) goto err; break; case MOXA_BOARD_CP204J: tmp = readw(baseAddr + C218_key); if (tmp != CP204J_KeyCode) goto err; break; default: tmp = readw(baseAddr + C320_key); if (tmp != C320_KeyCode) goto err; tmp = readw(baseAddr + C320_status); if (tmp != STS_init) { printk(KERN_ERR "MOXA: bios upload failed -- CPU/Basic " "module not found\n"); return -EIO; } break; } return 0; err: printk(KERN_ERR "MOXA: bios upload failed -- board not found\n"); return -EIO; } static int moxa_load_320b(struct moxa_board_conf *brd, const u8 *ptr, size_t len) { void __iomem *baseAddr = brd->basemem; if (len < 7168) { printk(KERN_ERR "MOXA: invalid 320 bios -- too short\n"); return -EINVAL; } writew(len - 7168 - 2, baseAddr + C320bapi_len); writeb(1, baseAddr + Control_reg); /* Select Page 1 */ memcpy_toio(baseAddr + DynPage_addr, ptr, 7168); writeb(2, baseAddr + Control_reg); /* Select Page 2 */ memcpy_toio(baseAddr + DynPage_addr, ptr + 7168, len - 7168); return 0; } static int moxa_real_load_code(struct moxa_board_conf *brd, const void *ptr, size_t len) { void __iomem *baseAddr = brd->basemem; const __le16 *uptr = ptr; size_t wlen, len2, j; unsigned long key, loadbuf, loadlen, checksum, checksum_ok; unsigned int i, retry; u16 usum, keycode; keycode = (brd->boardType == MOXA_BOARD_CP204J) ? CP204J_KeyCode : C218_KeyCode; switch (brd->boardType) { case MOXA_BOARD_CP204J: case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: key = C218_key; loadbuf = C218_LoadBuf; loadlen = C218DLoad_len; checksum = C218check_sum; checksum_ok = C218chksum_ok; break; default: key = C320_key; keycode = C320_KeyCode; loadbuf = C320_LoadBuf; loadlen = C320DLoad_len; checksum = C320check_sum; checksum_ok = C320chksum_ok; break; } usum = 0; wlen = len >> 1; for (i = 0; i < wlen; i++) usum += le16_to_cpu(uptr[i]); retry = 0; do { wlen = len >> 1; j = 0; while (wlen) { len2 = (wlen > 2048) ? 2048 : wlen; wlen -= len2; memcpy_toio(baseAddr + loadbuf, ptr + j, len2 << 1); j += len2 << 1; writew(len2, baseAddr + loadlen); writew(0, baseAddr + key); for (i = 0; i < 100; i++) { if (readw(baseAddr + key) == keycode) break; msleep(10); } if (readw(baseAddr + key) != keycode) return -EIO; } writew(0, baseAddr + loadlen); writew(usum, baseAddr + checksum); writew(0, baseAddr + key); for (i = 0; i < 100; i++) { if (readw(baseAddr + key) == keycode) break; msleep(10); } retry++; } while ((readb(baseAddr + checksum_ok) != 1) && (retry < 3)); if (readb(baseAddr + checksum_ok) != 1) return -EIO; writew(0, baseAddr + key); for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; if (MOXA_IS_320(brd)) { if (brd->busType == MOXA_BUS_TYPE_PCI) { /* ASIC board */ writew(0x3800, baseAddr + TMS320_PORT1); writew(0x3900, baseAddr + TMS320_PORT2); writew(28499, baseAddr + TMS320_CLOCK); } else { writew(0x3200, baseAddr + TMS320_PORT1); writew(0x3400, baseAddr + TMS320_PORT2); writew(19999, baseAddr + TMS320_CLOCK); } } writew(1, baseAddr + Disable_IRQ); writew(0, baseAddr + Magic_no); for (i = 0; i < 500; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; if (MOXA_IS_320(brd)) { j = readw(baseAddr + Module_cnt); if (j <= 0) return -EIO; brd->numPorts = j * 8; writew(j, baseAddr + Module_no); writew(0, baseAddr + Magic_no); for (i = 0; i < 600; i++) { if (readw(baseAddr + Magic_no) == Magic_code) break; msleep(10); } if (readw(baseAddr + Magic_no) != Magic_code) return -EIO; } brd->intNdx = baseAddr + IRQindex; brd->intPend = baseAddr + IRQpending; brd->intTable = baseAddr + IRQtable; return 0; } static int moxa_load_code(struct moxa_board_conf *brd, const void *ptr, size_t len) { void __iomem *ofsAddr, *baseAddr = brd->basemem; struct moxa_port *port; int retval, i; if (len % 2) { printk(KERN_ERR "MOXA: bios length is not even\n"); return -EINVAL; } retval = moxa_real_load_code(brd, ptr, len); /* may change numPorts */ if (retval) return retval; switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: case MOXA_BOARD_CP204J: port = brd->ports; for (i = 0; i < brd->numPorts; i++, port++) { port->board = brd; port->DCDState = 0; port->tableAddr = baseAddr + Extern_table + Extern_size * i; ofsAddr = port->tableAddr; writew(C218rx_mask, ofsAddr + RX_mask); writew(C218tx_mask, ofsAddr + TX_mask); writew(C218rx_spage + i * C218buf_pageno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C218rx_pageno, ofsAddr + EndPage_rxb); writew(C218tx_spage + i * C218buf_pageno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C218tx_pageno, ofsAddr + EndPage_txb); } break; default: port = brd->ports; for (i = 0; i < brd->numPorts; i++, port++) { port->board = brd; port->DCDState = 0; port->tableAddr = baseAddr + Extern_table + Extern_size * i; ofsAddr = port->tableAddr; switch (brd->numPorts) { case 8: writew(C320p8rx_mask, ofsAddr + RX_mask); writew(C320p8tx_mask, ofsAddr + TX_mask); writew(C320p8rx_spage + i * C320p8buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p8rx_pgno, ofsAddr + EndPage_rxb); writew(C320p8tx_spage + i * C320p8buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C320p8tx_pgno, ofsAddr + EndPage_txb); break; case 16: writew(C320p16rx_mask, ofsAddr + RX_mask); writew(C320p16tx_mask, ofsAddr + TX_mask); writew(C320p16rx_spage + i * C320p16buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p16rx_pgno, ofsAddr + EndPage_rxb); writew(C320p16tx_spage + i * C320p16buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb) + C320p16tx_pgno, ofsAddr + EndPage_txb); break; case 24: writew(C320p24rx_mask, ofsAddr + RX_mask); writew(C320p24tx_mask, ofsAddr + TX_mask); writew(C320p24rx_spage + i * C320p24buf_pgno, ofsAddr + Page_rxb); writew(readw(ofsAddr + Page_rxb) + C320p24rx_pgno, ofsAddr + EndPage_rxb); writew(C320p24tx_spage + i * C320p24buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); break; case 32: writew(C320p32rx_mask, ofsAddr + RX_mask); writew(C320p32tx_mask, ofsAddr + TX_mask); writew(C320p32tx_ofs, ofsAddr + Ofs_txb); writew(C320p32rx_spage + i * C320p32buf_pgno, ofsAddr + Page_rxb); writew(readb(ofsAddr + Page_rxb), ofsAddr + EndPage_rxb); writew(C320p32tx_spage + i * C320p32buf_pgno, ofsAddr + Page_txb); writew(readw(ofsAddr + Page_txb), ofsAddr + EndPage_txb); break; } } break; } return 0; } static int moxa_load_fw(struct moxa_board_conf *brd, const struct firmware *fw) { const void *ptr = fw->data; char rsn[64]; u16 lens[5]; size_t len; unsigned int a, lenp, lencnt; int ret = -EINVAL; struct { __le32 magic; /* 0x34303430 */ u8 reserved1[2]; u8 type; /* UNIX = 3 */ u8 model; /* C218T=1, C320T=2, CP204=3 */ u8 reserved2[8]; __le16 len[5]; } const *hdr = ptr; BUILD_BUG_ON(ARRAY_SIZE(hdr->len) != ARRAY_SIZE(lens)); if (fw->size < MOXA_FW_HDRLEN) { strcpy(rsn, "too short (even header won't fit)"); goto err; } if (hdr->magic != cpu_to_le32(0x30343034)) { sprintf(rsn, "bad magic: %.8x", le32_to_cpu(hdr->magic)); goto err; } if (hdr->type != 3) { sprintf(rsn, "not for linux, type is %u", hdr->type); goto err; } if (moxa_check_fw_model(brd, hdr->model)) { sprintf(rsn, "not for this card, model is %u", hdr->model); goto err; } len = MOXA_FW_HDRLEN; lencnt = hdr->model == 2 ? 5 : 3; for (a = 0; a < ARRAY_SIZE(lens); a++) { lens[a] = le16_to_cpu(hdr->len[a]); if (lens[a] && len + lens[a] <= fw->size && moxa_check_fw(&fw->data[len])) printk(KERN_WARNING "MOXA firmware: unexpected input " "at offset %u, but going on\n", (u32)len); if (!lens[a] && a < lencnt) { sprintf(rsn, "too few entries in fw file"); goto err; } len += lens[a]; } if (len != fw->size) { sprintf(rsn, "bad length: %u (should be %u)", (u32)fw->size, (u32)len); goto err; } ptr += MOXA_FW_HDRLEN; lenp = 0; /* bios */ strcpy(rsn, "read above"); ret = moxa_load_bios(brd, ptr, lens[lenp]); if (ret) goto err; /* we skip the tty section (lens[1]), since we don't need it */ ptr += lens[lenp] + lens[lenp + 1]; lenp += 2; /* comm */ if (hdr->model == 2) { ret = moxa_load_320b(brd, ptr, lens[lenp]); if (ret) goto err; /* skip another tty */ ptr += lens[lenp] + lens[lenp + 1]; lenp += 2; } ret = moxa_load_code(brd, ptr, lens[lenp]); if (ret) goto err; return 0; err: printk(KERN_ERR "firmware failed to load, reason: %s\n", rsn); return ret; } static int moxa_init_board(struct moxa_board_conf *brd, struct device *dev) { const struct firmware *fw; const char *file; struct moxa_port *p; unsigned int i; int ret; brd->ports = kcalloc(MAX_PORTS_PER_BOARD, sizeof(*brd->ports), GFP_KERNEL); if (brd->ports == NULL) { printk(KERN_ERR "cannot allocate memory for ports\n"); ret = -ENOMEM; goto err; } for (i = 0, p = brd->ports; i < MAX_PORTS_PER_BOARD; i++, p++) { tty_port_init(&p->port); p->port.ops = &moxa_port_ops; p->type = PORT_16550A; p->cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; } switch (brd->boardType) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: file = "c218tunx.cod"; break; case MOXA_BOARD_CP204J: file = "cp204unx.cod"; break; default: file = "c320tunx.cod"; break; } ret = request_firmware(&fw, file, dev); if (ret) { printk(KERN_ERR "MOXA: request_firmware failed. Make sure " "you've placed '%s' file into your firmware " "loader directory (e.g. /lib/firmware)\n", file); goto err_free; } ret = moxa_load_fw(brd, fw); release_firmware(fw); if (ret) goto err_free; spin_lock_bh(&moxa_lock); brd->ready = 1; if (!timer_pending(&moxaTimer)) mod_timer(&moxaTimer, jiffies + HZ / 50); spin_unlock_bh(&moxa_lock); return 0; err_free: kfree(brd->ports); err: return ret; } static void moxa_board_deinit(struct moxa_board_conf *brd) { unsigned int a, opened; mutex_lock(&moxa_openlock); spin_lock_bh(&moxa_lock); brd->ready = 0; spin_unlock_bh(&moxa_lock); /* pci hot-un-plug support */ for (a = 0; a < brd->numPorts; a++) if (brd->ports[a].port.flags & ASYNC_INITIALIZED) { struct tty_struct *tty = tty_port_tty_get( &brd->ports[a].port); if (tty) { tty_hangup(tty); tty_kref_put(tty); } } while (1) { opened = 0; for (a = 0; a < brd->numPorts; a++) if (brd->ports[a].port.flags & ASYNC_INITIALIZED) opened++; mutex_unlock(&moxa_openlock); if (!opened) break; msleep(50); mutex_lock(&moxa_openlock); } iounmap(brd->basemem); brd->basemem = NULL; kfree(brd->ports); } #ifdef CONFIG_PCI static int __devinit moxa_pci_probe(struct pci_dev *pdev, const struct pci_device_id *ent) { struct moxa_board_conf *board; unsigned int i; int board_type = ent->driver_data; int retval; retval = pci_enable_device(pdev); if (retval) { dev_err(&pdev->dev, "can't enable pci device\n"); goto err; } for (i = 0; i < MAX_BOARDS; i++) if (moxa_boards[i].basemem == NULL) break; retval = -ENODEV; if (i >= MAX_BOARDS) { dev_warn(&pdev->dev, "more than %u MOXA Intellio family boards " "found. Board is ignored.\n", MAX_BOARDS); goto err; } board = &moxa_boards[i]; retval = pci_request_region(pdev, 2, "moxa-base"); if (retval) { dev_err(&pdev->dev, "can't request pci region 2\n"); goto err; } board->basemem = ioremap_nocache(pci_resource_start(pdev, 2), 0x4000); if (board->basemem == NULL) { dev_err(&pdev->dev, "can't remap io space 2\n"); goto err_reg; } board->boardType = board_type; switch (board_type) { case MOXA_BOARD_C218_ISA: case MOXA_BOARD_C218_PCI: board->numPorts = 8; break; case MOXA_BOARD_CP204J: board->numPorts = 4; break; default: board->numPorts = 0; break; } board->busType = MOXA_BUS_TYPE_PCI; retval = moxa_init_board(board, &pdev->dev); if (retval) goto err_base; pci_set_drvdata(pdev, board); dev_info(&pdev->dev, "board '%s' ready (%u ports, firmware loaded)\n", moxa_brdname[board_type - 1], board->numPorts); return 0; err_base: iounmap(board->basemem); board->basemem = NULL; err_reg: pci_release_region(pdev, 2); err: return retval; } static void __devexit moxa_pci_remove(struct pci_dev *pdev) { struct moxa_board_conf *brd = pci_get_drvdata(pdev); moxa_board_deinit(brd); pci_release_region(pdev, 2); } static struct pci_driver moxa_pci_driver = { .name = "moxa", .id_table = moxa_pcibrds, .probe = moxa_pci_probe, .remove = __devexit_p(moxa_pci_remove) }; #endif /* CONFIG_PCI */ static int __init moxa_init(void) { unsigned int isabrds = 0; int retval = 0; struct moxa_board_conf *brd = moxa_boards; unsigned int i; printk(KERN_INFO "MOXA Intellio family driver version %s\n", MOXA_VERSION); moxaDriver = alloc_tty_driver(MAX_PORTS + 1); if (!moxaDriver) return -ENOMEM; moxaDriver->name = "ttyMX"; moxaDriver->major = ttymajor; moxaDriver->minor_start = 0; moxaDriver->type = TTY_DRIVER_TYPE_SERIAL; moxaDriver->subtype = SERIAL_TYPE_NORMAL; moxaDriver->init_termios = tty_std_termios; moxaDriver->init_termios.c_cflag = B9600 | CS8 | CREAD | CLOCAL | HUPCL; moxaDriver->init_termios.c_ispeed = 9600; moxaDriver->init_termios.c_ospeed = 9600; moxaDriver->flags = TTY_DRIVER_REAL_RAW; tty_set_operations(moxaDriver, &moxa_ops); if (tty_register_driver(moxaDriver)) { printk(KERN_ERR "can't register MOXA Smartio tty driver!\n"); put_tty_driver(moxaDriver); return -1; } /* Find the boards defined from module args. */ for (i = 0; i < MAX_BOARDS; i++) { if (!baseaddr[i]) break; if (type[i] == MOXA_BOARD_C218_ISA || type[i] == MOXA_BOARD_C320_ISA) { pr_debug("Moxa board %2d: %s board(baseAddr=%lx)\n", isabrds + 1, moxa_brdname[type[i] - 1], baseaddr[i]); brd->boardType = type[i]; brd->numPorts = type[i] == MOXA_BOARD_C218_ISA ? 8 : numports[i]; brd->busType = MOXA_BUS_TYPE_ISA; brd->basemem = ioremap_nocache(baseaddr[i], 0x4000); if (!brd->basemem) { printk(KERN_ERR "MOXA: can't remap %lx\n", baseaddr[i]); continue; } if (moxa_init_board(brd, NULL)) { iounmap(brd->basemem); brd->basemem = NULL; continue; } printk(KERN_INFO "MOXA isa board found at 0x%.8lu and " "ready (%u ports, firmware loaded)\n", baseaddr[i], brd->numPorts); brd++; isabrds++; } } #ifdef CONFIG_PCI retval = pci_register_driver(&moxa_pci_driver); if (retval) { printk(KERN_ERR "Can't register MOXA pci driver!\n"); if (isabrds) retval = 0; } #endif return retval; } static void __exit moxa_exit(void) { unsigned int i; #ifdef CONFIG_PCI pci_unregister_driver(&moxa_pci_driver); #endif for (i = 0; i < MAX_BOARDS; i++) /* ISA boards */ if (moxa_boards[i].ready) moxa_board_deinit(&moxa_boards[i]); del_timer_sync(&moxaTimer); if (tty_unregister_driver(moxaDriver)) printk(KERN_ERR "Couldn't unregister MOXA Intellio family " "serial driver\n"); put_tty_driver(moxaDriver); } module_init(moxa_init); module_exit(moxa_exit); static void moxa_shutdown(struct tty_port *port) { struct moxa_port *ch = container_of(port, struct moxa_port, port); MoxaPortDisable(ch); MoxaPortFlushData(ch, 2); } static int moxa_carrier_raised(struct tty_port *port) { struct moxa_port *ch = container_of(port, struct moxa_port, port); int dcd; spin_lock_irq(&port->lock); dcd = ch->DCDState; spin_unlock_irq(&port->lock); return dcd; } static void moxa_dtr_rts(struct tty_port *port, int onoff) { struct moxa_port *ch = container_of(port, struct moxa_port, port); MoxaPortLineCtrl(ch, onoff, onoff); } static int moxa_open(struct tty_struct *tty, struct file *filp) { struct moxa_board_conf *brd; struct moxa_port *ch; int port; port = tty->index; if (port == MAX_PORTS) { return capable(CAP_SYS_ADMIN) ? 0 : -EPERM; } if (mutex_lock_interruptible(&moxa_openlock)) return -ERESTARTSYS; brd = &moxa_boards[port / MAX_PORTS_PER_BOARD]; if (!brd->ready) { mutex_unlock(&moxa_openlock); return -ENODEV; } if (port % MAX_PORTS_PER_BOARD >= brd->numPorts) { mutex_unlock(&moxa_openlock); return -ENODEV; } ch = &brd->ports[port % MAX_PORTS_PER_BOARD]; ch->port.count++; tty->driver_data = ch; tty_port_tty_set(&ch->port, tty); mutex_lock(&ch->port.mutex); if (!(ch->port.flags & ASYNC_INITIALIZED)) { ch->statusflags = 0; moxa_set_tty_param(tty, tty->termios); MoxaPortLineCtrl(ch, 1, 1); MoxaPortEnable(ch); MoxaSetFifo(ch, ch->type == PORT_16550A); ch->port.flags |= ASYNC_INITIALIZED; } mutex_unlock(&ch->port.mutex); mutex_unlock(&moxa_openlock); return tty_port_block_til_ready(&ch->port, tty, filp); } static void moxa_close(struct tty_struct *tty, struct file *filp) { struct moxa_port *ch = tty->driver_data; ch->cflag = tty->termios->c_cflag; tty_port_close(&ch->port, tty, filp); } static int moxa_write(struct tty_struct *tty, const unsigned char *buf, int count) { struct moxa_port *ch = tty->driver_data; unsigned long flags; int len; if (ch == NULL) return 0; spin_lock_irqsave(&moxa_lock, flags); len = MoxaPortWriteData(tty, buf, count); spin_unlock_irqrestore(&moxa_lock, flags); set_bit(LOWWAIT, &ch->statusflags); return len; } static int moxa_write_room(struct tty_struct *tty) { struct moxa_port *ch; if (tty->stopped) return 0; ch = tty->driver_data; if (ch == NULL) return 0; return MoxaPortTxFree(ch); } static void moxa_flush_buffer(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; MoxaPortFlushData(ch, 1); tty_wakeup(tty); } static int moxa_chars_in_buffer(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; int chars; chars = MoxaPortTxQueue(ch); if (chars) /* * Make it possible to wakeup anything waiting for output * in tty_ioctl.c, etc. */ set_bit(EMPTYWAIT, &ch->statusflags); return chars; } static int moxa_tiocmget(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; int flag = 0, dtr, rts; MoxaPortGetLineOut(ch, &dtr, &rts); if (dtr) flag |= TIOCM_DTR; if (rts) flag |= TIOCM_RTS; dtr = MoxaPortLineStatus(ch); if (dtr & 1) flag |= TIOCM_CTS; if (dtr & 2) flag |= TIOCM_DSR; if (dtr & 4) flag |= TIOCM_CD; return flag; } static int moxa_tiocmset(struct tty_struct *tty, unsigned int set, unsigned int clear) { struct moxa_port *ch; int dtr, rts; mutex_lock(&moxa_openlock); ch = tty->driver_data; if (!ch) { mutex_unlock(&moxa_openlock); return -EINVAL; } MoxaPortGetLineOut(ch, &dtr, &rts); if (set & TIOCM_RTS) rts = 1; if (set & TIOCM_DTR) dtr = 1; if (clear & TIOCM_RTS) rts = 0; if (clear & TIOCM_DTR) dtr = 0; MoxaPortLineCtrl(ch, dtr, rts); mutex_unlock(&moxa_openlock); return 0; } static void moxa_set_termios(struct tty_struct *tty, struct ktermios *old_termios) { struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; moxa_set_tty_param(tty, old_termios); if (!(old_termios->c_cflag & CLOCAL) && C_CLOCAL(tty)) wake_up_interruptible(&ch->port.open_wait); } static void moxa_stop(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; MoxaPortTxDisable(ch); set_bit(TXSTOPPED, &ch->statusflags); } static void moxa_start(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; if (ch == NULL) return; if (!test_bit(TXSTOPPED, &ch->statusflags)) return; MoxaPortTxEnable(ch); clear_bit(TXSTOPPED, &ch->statusflags); } static void moxa_hangup(struct tty_struct *tty) { struct moxa_port *ch = tty->driver_data; tty_port_hangup(&ch->port); } static void moxa_new_dcdstate(struct moxa_port *p, u8 dcd) { struct tty_struct *tty; unsigned long flags; dcd = !!dcd; spin_lock_irqsave(&p->port.lock, flags); if (dcd != p->DCDState) { p->DCDState = dcd; spin_unlock_irqrestore(&p->port.lock, flags); tty = tty_port_tty_get(&p->port); if (tty && C_CLOCAL(tty) && !dcd) tty_hangup(tty); tty_kref_put(tty); } else spin_unlock_irqrestore(&p->port.lock, flags); } static int moxa_poll_port(struct moxa_port *p, unsigned int handle, u16 __iomem *ip) { struct tty_struct *tty = tty_port_tty_get(&p->port); void __iomem *ofsAddr; unsigned int inited = p->port.flags & ASYNC_INITIALIZED; u16 intr; if (tty) { if (test_bit(EMPTYWAIT, &p->statusflags) && MoxaPortTxQueue(p) == 0) { clear_bit(EMPTYWAIT, &p->statusflags); tty_wakeup(tty); } if (test_bit(LOWWAIT, &p->statusflags) && !tty->stopped && MoxaPortTxQueue(p) <= WAKEUP_CHARS) { clear_bit(LOWWAIT, &p->statusflags); tty_wakeup(tty); } if (inited && !test_bit(TTY_THROTTLED, &tty->flags) && MoxaPortRxQueue(p) > 0) { /* RX */ MoxaPortReadData(p); tty_schedule_flip(tty); } } else { clear_bit(EMPTYWAIT, &p->statusflags); MoxaPortFlushData(p, 0); /* flush RX */ } if (!handle) /* nothing else to do */ goto put; intr = readw(ip); /* port irq status */ if (intr == 0) goto put; writew(0, ip); /* ACK port */ ofsAddr = p->tableAddr; if (intr & IntrTx) /* disable tx intr */ writew(readw(ofsAddr + HostStat) & ~WakeupTx, ofsAddr + HostStat); if (!inited) goto put; if (tty && (intr & IntrBreak) && !I_IGNBRK(tty)) { /* BREAK */ tty_insert_flip_char(tty, 0, TTY_BREAK); tty_schedule_flip(tty); } if (intr & IntrLine) moxa_new_dcdstate(p, readb(ofsAddr + FlagStat) & DCD_state); put: tty_kref_put(tty); return 0; } static void moxa_poll(unsigned long ignored) { struct moxa_board_conf *brd; u16 __iomem *ip; unsigned int card, port, served = 0; spin_lock(&moxa_lock); for (card = 0; card < MAX_BOARDS; card++) { brd = &moxa_boards[card]; if (!brd->ready) continue; served++; ip = NULL; if (readb(brd->intPend) == 0xff) ip = brd->intTable + readb(brd->intNdx); for (port = 0; port < brd->numPorts; port++) moxa_poll_port(&brd->ports[port], !!ip, ip + port); if (ip) writeb(0, brd->intPend); /* ACK */ if (moxaLowWaterChk) { struct moxa_port *p = brd->ports; for (port = 0; port < brd->numPorts; port++, p++) if (p->lowChkFlag) { p->lowChkFlag = 0; moxa_low_water_check(p->tableAddr); } } } moxaLowWaterChk = 0; if (served) mod_timer(&moxaTimer, jiffies + HZ / 50); spin_unlock(&moxa_lock); } /******************************************************************************/ static void moxa_set_tty_param(struct tty_struct *tty, struct ktermios *old_termios) { register struct ktermios *ts = tty->termios; struct moxa_port *ch = tty->driver_data; int rts, cts, txflow, rxflow, xany, baud; rts = cts = txflow = rxflow = xany = 0; if (ts->c_cflag & CRTSCTS) rts = cts = 1; if (ts->c_iflag & IXON) txflow = 1; if (ts->c_iflag & IXOFF) rxflow = 1; if (ts->c_iflag & IXANY) xany = 1; /* Clear the features we don't support */ ts->c_cflag &= ~CMSPAR; MoxaPortFlowCtrl(ch, rts, cts, txflow, rxflow, xany); baud = MoxaPortSetTermio(ch, ts, tty_get_baud_rate(tty)); if (baud == -1) baud = tty_termios_baud_rate(old_termios); /* Not put the baud rate into the termios data */ tty_encode_baud_rate(tty, baud, baud); } /***************************************************************************** * Driver level functions: * *****************************************************************************/ static void MoxaPortFlushData(struct moxa_port *port, int mode) { void __iomem *ofsAddr; if (mode < 0 || mode > 2) return; ofsAddr = port->tableAddr; moxafunc(ofsAddr, FC_FlushQueue, mode); if (mode != 1) { port->lowChkFlag = 0; moxa_low_water_check(ofsAddr); } } /* * Moxa Port Number Description: * * MOXA serial driver supports up to 4 MOXA-C218/C320 boards. And, * the port number using in MOXA driver functions will be 0 to 31 for * first MOXA board, 32 to 63 for second, 64 to 95 for third and 96 * to 127 for fourth. For example, if you setup three MOXA boards, * first board is C218, second board is C320-16 and third board is * C320-32. The port number of first board (C218 - 8 ports) is from * 0 to 7. The port number of second board (C320 - 16 ports) is form * 32 to 47. The port number of third board (C320 - 32 ports) is from * 64 to 95. And those port numbers form 8 to 31, 48 to 63 and 96 to * 127 will be invalid. * * * Moxa Functions Description: * * Function 1: Driver initialization routine, this routine must be * called when initialized driver. * Syntax: * void MoxaDriverInit(); * * * Function 2: Moxa driver private IOCTL command processing. * Syntax: * int MoxaDriverIoctl(unsigned int cmd, unsigned long arg, int port); * * unsigned int cmd : IOCTL command * unsigned long arg : IOCTL argument * int port : port number (0 - 127) * * return: 0 (OK) * -EINVAL * -ENOIOCTLCMD * * * Function 6: Enable this port to start Tx/Rx data. * Syntax:


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