Rev 4669 | Only display areas with differences | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed
Rev 4669 | Rev 4691 | ||
---|---|---|---|
1 | /* |
1 | /* |
2 | * Copyright (c) 2009 Vineeth Pillai |
2 | * Copyright (c) 2009 Vineeth Pillai |
3 | * All rights reserved. |
3 | * All rights reserved. |
4 | * |
4 | * |
5 | * Redistribution and use in source and binary forms, with or without |
5 | * Redistribution and use in source and binary forms, with or without |
6 | * modification, are permitted provided that the following conditions |
6 | * modification, are permitted provided that the following conditions |
7 | * are met: |
7 | * are met: |
8 | * |
8 | * |
9 | * - Redistributions of source code must retain the above copyright |
9 | * - Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * - Redistributions in binary form must reproduce the above copyright |
11 | * - Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
13 | * documentation and/or other materials provided with the distribution. |
14 | * - The name of the author may not be used to endorse or promote products |
14 | * - The name of the author may not be used to endorse or promote products |
15 | * derived from this software without specific prior written permission. |
15 | * derived from this software without specific prior written permission. |
16 | * |
16 | * |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
27 | */ |
27 | */ |
28 | 28 | ||
29 | /** @addtogroup genarch |
29 | /** @addtogroup genarch |
30 | * @{ |
30 | * @{ |
31 | */ |
31 | */ |
32 | /** |
32 | /** |
33 | * @file |
33 | * @file |
34 | * @brief pl050 keyboard/mouse driver. |
34 | * @brief pl050 keyboard/mouse driver. |
35 | * |
35 | * |
36 | * It takes care of low-level keyboard functions. |
36 | * It takes care of low-level keyboard functions. |
37 | */ |
37 | */ |
38 | 38 | ||
39 | #include <genarch/drivers/pl050/pl050.h> |
39 | #include <genarch/drivers/pl050/pl050.h> |
40 | #include <arch/asm.h> |
40 | #include <arch/asm.h> |
41 | #include <console/chardev.h> |
41 | #include <console/chardev.h> |
42 | #include <mm/slab.h> |
42 | #include <mm/slab.h> |
43 | #include <ddi/device.h> |
43 | #include <ddi/device.h> |
44 | 44 | ||
45 | #define PL050_KEY_RELEASE 0xF0 |
45 | #define PL050_KEY_RELEASE 0xF0 |
46 | #define PL050_ESC_KEY 0xE0 |
46 | #define PL050_ESC_KEY 0xE0 |
47 | #define PL050_CAPS_SCAN_CODE 0x58 |
47 | #define PL050_CAPS_SCAN_CODE 0x58 |
48 | 48 | ||
49 | /** Structure for pl050's IRQ. */ |
49 | /** Structure for pl050's IRQ. */ |
50 | static pl050_t *pl050; |
50 | static pl050_t *pl050; |
51 | 51 | ||
52 | static irq_ownership_t pl050_claim(irq_t *irq) |
52 | static irq_ownership_t pl050_claim(irq_t *irq) |
53 | { |
53 | { |
54 | uint8_t status; |
54 | uint8_t status; |
55 | if ((status = pio_read_8(pl050->status)) & PL050_STAT_RXFULL) |
55 | if ((status = pio_read_8(pl050->status)) & PL050_STAT_RXFULL) |
56 | return IRQ_ACCEPT; |
56 | return IRQ_ACCEPT; |
57 | else { |
57 | else { |
58 | return IRQ_DECLINE; |
58 | return IRQ_DECLINE; |
59 | } |
59 | } |
60 | } |
60 | } |
61 | 61 | ||
62 | static void pl050_irq_handler(irq_t *irq) |
62 | static void pl050_irq_handler(irq_t *irq) |
63 | { |
63 | { |
64 | uint8_t data; |
64 | uint8_t data; |
65 | uint8_t status; |
65 | uint8_t status; |
66 | pl050_instance_t *instance = irq->instance; |
66 | pl050_instance_t *instance = irq->instance; |
67 | 67 | ||
68 | while ((status = pio_read_8(pl050->status)) & PL050_STAT_RXFULL) { |
68 | while ((status = pio_read_8(pl050->status)) & PL050_STAT_RXFULL) { |
69 | data = pio_read_8(pl050->data); |
69 | data = pio_read_8(pl050->data); |
70 | indev_push_character(instance->kbrdin, data); |
70 | indev_push_character(instance->kbrdin, data); |
71 | 71 | ||
72 | } |
72 | } |
73 | } |
73 | } |
74 | 74 | ||
75 | /** Initialize pl050. */ |
75 | /** Initialize pl050. */ |
76 | pl050_instance_t *pl050_init(pl050_t *dev, inr_t inr) |
76 | pl050_instance_t *pl050_init(pl050_t *dev, inr_t inr) |
77 | { |
77 | { |
78 | 78 | ||
79 | pl050_instance_t *instance = |
79 | pl050_instance_t *instance = |
80 | malloc(sizeof(pl050_instance_t), FRAME_ATOMIC); |
80 | malloc(sizeof(pl050_instance_t), FRAME_ATOMIC); |
81 | 81 | ||
82 | pl050 = dev; |
82 | pl050 = dev; |
83 | 83 | ||
84 | if (instance) { |
84 | if (instance) { |
85 | instance->pl050 = dev; |
85 | instance->pl050 = dev; |
86 | instance->kbrdin = NULL; |
86 | instance->kbrdin = NULL; |
87 | 87 | ||
88 | irq_initialize(&instance->irq); |
88 | irq_initialize(&instance->irq); |
89 | instance->irq.devno = device_assign_devno(); |
89 | instance->irq.devno = device_assign_devno(); |
90 | instance->irq.inr = inr; |
90 | instance->irq.inr = inr; |
91 | instance->irq.claim = pl050_claim; |
91 | instance->irq.claim = pl050_claim; |
92 | instance->irq.handler = pl050_irq_handler; |
92 | instance->irq.handler = pl050_irq_handler; |
93 | instance->irq.instance = instance; |
93 | instance->irq.instance = instance; |
94 | } |
94 | } |
95 | 95 | ||
96 | return instance; |
96 | return instance; |
97 | } |
97 | } |
98 | 98 | ||
99 | void pl050_wire(pl050_instance_t *instance, indev_t *kbrdin) |
99 | void pl050_wire(pl050_instance_t *instance, indev_t *kbrdin) |
100 | { |
100 | { |
101 | uint8_t val; |
101 | uint8_t val; |
102 | 102 | ||
103 | instance->kbrdin = kbrdin; |
103 | instance->kbrdin = kbrdin; |
104 | irq_register(&instance->irq); |
104 | irq_register(&instance->irq); |
105 | 105 | ||
106 | val = PL050_CR_RXINTR | PL050_CR_INTR; |
106 | val = PL050_CR_RXINTR | PL050_CR_INTR; |
107 | 107 | ||
108 | pio_write_8(pl050->ctrl, val); |
108 | pio_write_8(pl050->ctrl, val); |
109 | 109 | ||
110 | /* reset the data buffer */ |
110 | /* reset the data buffer */ |
111 | pio_read_8(pl050->data); |
111 | pio_read_8(pl050->data); |
112 | 112 | ||
113 | } |
113 | } |
114 | 114 | ||
115 | 115 | ||
116 | /** @} |
116 | /** @} |
117 | */ |
117 | */ |
118 | 118 |