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drivers: power: report battery voltage in AOSP compatible format
[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / parport / parport_gsc.h
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1da177e4
LT		 1/*
2 * Low-level parallel-support for PC-style hardware integrated in the
3 * LASI-Controller (on GSC-Bus) for HP-PARISC Workstations
4 *
5 * (C) 1999-2001 by Helge Deller <deller@gmx.de>
6 *
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
21 *
22 * based on parport_pc.c by
23 * Grant Guenther <grant@torque.net>
24 * Phil Blundell <Philip.Blundell@pobox.com>
25 * Tim Waugh <tim@cyberelk.demon.co.uk>
26 * Jose Renau <renau@acm.org>
bdca3f20 27 * David Campbell
1da177e4
LT		 28 * Andrea Arcangeli
29 */
30
31#ifndef __DRIVERS_PARPORT_PARPORT_GSC_H
32#define __DRIVERS_PARPORT_PARPORT_GSC_H
33
34#include <asm/io.h>
35#include <linux/delay.h>
36
37#undef DEBUG_PARPORT /* undefine for production */
38#define DELAY_TIME 0
39
40#if DELAY_TIME == 0
41#define parport_readb gsc_readb
42#define parport_writeb gsc_writeb
43#else
44static __inline__ unsigned char parport_readb( unsigned long port )
45{
46 udelay(DELAY_TIME);
47 return gsc_readb(port);
48}
49
50static __inline__ void parport_writeb( unsigned char value, unsigned long port )
51{
52 gsc_writeb(value,port);
53 udelay(DELAY_TIME);
54}
55#endif
56
57/* --- register definitions ------------------------------- */
58
59#define EPPDATA(p) ((p)->base + 0x4)
60#define EPPADDR(p) ((p)->base + 0x3)
61#define CONTROL(p) ((p)->base + 0x2)
62#define STATUS(p) ((p)->base + 0x1)
63#define DATA(p) ((p)->base + 0x0)
64
65struct parport_gsc_private {
66 /* Contents of CTR. */
67 unsigned char ctr;
68
69 /* Bitmask of writable CTR bits. */
70 unsigned char ctr_writable;
71
72 /* Number of bytes per portword. */
73 int pword;
74
75 /* Not used yet. */
76 int readIntrThreshold;
77 int writeIntrThreshold;
78
79 /* buffer suitable for DMA, if DMA enabled */
80 char *dma_buf;
81 dma_addr_t dma_handle;
82 struct pci_dev *dev;
83};
84
85static inline void parport_gsc_write_data(struct parport *p, unsigned char d)
86{
87#ifdef DEBUG_PARPORT
88 printk (KERN_DEBUG "parport_gsc_write_data(%p,0x%02x)\n", p, d);
89#endif
90 parport_writeb(d, DATA(p));
91}
92
93static inline unsigned char parport_gsc_read_data(struct parport *p)
94{
95 unsigned char val = parport_readb (DATA (p));
96#ifdef DEBUG_PARPORT
97 printk (KERN_DEBUG "parport_gsc_read_data(%p) = 0x%02x\n",
98 p, val);
99#endif
100 return val;
101}
102
103/* __parport_gsc_frob_control differs from parport_gsc_frob_control in that
104 * it doesn't do any extra masking. */
105static inline unsigned char __parport_gsc_frob_control(struct parport *p,
106 unsigned char mask,
107 unsigned char val)
108{
109 struct parport_gsc_private *priv = p->physport->private_data;
110 unsigned char ctr = priv->ctr;
111#ifdef DEBUG_PARPORT
112 printk (KERN_DEBUG
113 "__parport_gsc_frob_control(%02x,%02x): %02x -> %02x\n",
114 mask, val, ctr, ((ctr & ~mask) ^ val) & priv->ctr_writable);
115#endif
116 ctr = (ctr & ~mask) ^ val;
117 ctr &= priv->ctr_writable; /* only write writable bits. */
118 parport_writeb (ctr, CONTROL (p));
119 priv->ctr = ctr; /* Update soft copy */
120 return ctr;
121}
122
123static inline void parport_gsc_data_reverse(struct parport *p)
124{
125 __parport_gsc_frob_control (p, 0x20, 0x20);
126}
127
128static inline void parport_gsc_data_forward(struct parport *p)
129{
130 __parport_gsc_frob_control (p, 0x20, 0x00);
131}
132
133static inline void parport_gsc_write_control(struct parport *p,
134 unsigned char d)
135{
136 const unsigned char wm = (PARPORT_CONTROL_STROBE |
137 PARPORT_CONTROL_AUTOFD |
138 PARPORT_CONTROL_INIT |
139 PARPORT_CONTROL_SELECT);
140
141 /* Take this out when drivers have adapted to newer interface. */
142 if (d & 0x20) {
143 printk (KERN_DEBUG "%s (%s): use data_reverse for this!\n",
144 p->name, p->cad->name);
145 parport_gsc_data_reverse (p);
146 }
147
148 __parport_gsc_frob_control (p, wm, d & wm);
149}
150
151static inline unsigned char parport_gsc_read_control(struct parport *p)
152{
153 const unsigned char rm = (PARPORT_CONTROL_STROBE |
154 PARPORT_CONTROL_AUTOFD |
155 PARPORT_CONTROL_INIT |
156 PARPORT_CONTROL_SELECT);
157 const struct parport_gsc_private *priv = p->physport->private_data;
158 return priv->ctr & rm; /* Use soft copy */
159}
160
161static inline unsigned char parport_gsc_frob_control(struct parport *p,
162 unsigned char mask,
163 unsigned char val)
164{
165 const unsigned char wm = (PARPORT_CONTROL_STROBE |
166 PARPORT_CONTROL_AUTOFD |
167 PARPORT_CONTROL_INIT |
168 PARPORT_CONTROL_SELECT);
169
170 /* Take this out when drivers have adapted to newer interface. */
171 if (mask & 0x20) {
172 printk (KERN_DEBUG "%s (%s): use data_%s for this!\n",
173 p->name, p->cad->name,
174 (val & 0x20) ? "reverse" : "forward");
175 if (val & 0x20)
176 parport_gsc_data_reverse (p);
177 else
178 parport_gsc_data_forward (p);
179 }
180
181 /* Restrict mask and val to control lines. */
182 mask &= wm;
183 val &= wm;
184
185 return __parport_gsc_frob_control (p, mask, val);
186}
187
188static inline unsigned char parport_gsc_read_status(struct parport *p)
189{
190 return parport_readb (STATUS(p));
191}
192
193static inline void parport_gsc_disable_irq(struct parport *p)
194{
195 __parport_gsc_frob_control (p, 0x10, 0x00);
196}
197
198static inline void parport_gsc_enable_irq(struct parport *p)
199{
200 __parport_gsc_frob_control (p, 0x10, 0x10);
201}
202
203extern void parport_gsc_release_resources(struct parport *p);
204
205extern int parport_gsc_claim_resources(struct parport *p);
206
207extern void parport_gsc_init_state(struct pardevice *, struct parport_state *s);
208
209extern void parport_gsc_save_state(struct parport *p, struct parport_state *s);
210
211extern void parport_gsc_restore_state(struct parport *p, struct parport_state *s);
212
213extern void parport_gsc_inc_use_count(void);
214
215extern void parport_gsc_dec_use_count(void);
216
217extern struct parport *parport_gsc_probe_port(unsigned long base,
218 unsigned long base_hi,
219 int irq, int dma,
4edb3869 220 struct parisc_device *padev);
1da177e4
LT		 221
222#endif /* __DRIVERS_PARPORT_PARPORT_GSC_H */
kernel source for telekom puls (alcatel/mediatek)