diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/arm/mach-omap/leds-h2p2-debug.c |
Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
Diffstat (limited to 'arch/arm/mach-omap/leds-h2p2-debug.c')
-rw-r--r-- | arch/arm/mach-omap/leds-h2p2-debug.c | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/arch/arm/mach-omap/leds-h2p2-debug.c b/arch/arm/mach-omap/leds-h2p2-debug.c new file mode 100644 index 000000000000..6e98290cca5c --- /dev/null +++ b/arch/arm/mach-omap/leds-h2p2-debug.c | |||
@@ -0,0 +1,144 @@ | |||
1 | /* | ||
2 | * linux/arch/arm/mach-omap/leds-h2p2-debug.c | ||
3 | * | ||
4 | * Copyright 2003 by Texas Instruments Incorporated | ||
5 | * | ||
6 | * There are 16 LEDs on the debug board (all green); four may be used | ||
7 | * for logical 'green', 'amber', 'red', and 'blue' (after "claiming"). | ||
8 | * | ||
9 | * The "surfer" expansion board and H2 sample board also have two-color | ||
10 | * green+red LEDs (in parallel), used here for timer and idle indicators. | ||
11 | */ | ||
12 | #include <linux/config.h> | ||
13 | #include <linux/init.h> | ||
14 | #include <linux/kernel_stat.h> | ||
15 | #include <linux/sched.h> | ||
16 | #include <linux/version.h> | ||
17 | |||
18 | #include <asm/io.h> | ||
19 | #include <asm/hardware.h> | ||
20 | #include <asm/leds.h> | ||
21 | #include <asm/system.h> | ||
22 | |||
23 | #include <asm/arch/fpga.h> | ||
24 | #include <asm/arch/gpio.h> | ||
25 | |||
26 | #include "leds.h" | ||
27 | |||
28 | |||
29 | #define GPIO_LED_RED 3 | ||
30 | #define GPIO_LED_GREEN OMAP_MPUIO(4) | ||
31 | |||
32 | |||
33 | #define LED_STATE_ENABLED 0x01 | ||
34 | #define LED_STATE_CLAIMED 0x02 | ||
35 | #define LED_TIMER_ON 0x04 | ||
36 | |||
37 | #define GPIO_IDLE GPIO_LED_GREEN | ||
38 | #define GPIO_TIMER GPIO_LED_RED | ||
39 | |||
40 | |||
41 | void h2p2_dbg_leds_event(led_event_t evt) | ||
42 | { | ||
43 | unsigned long flags; | ||
44 | |||
45 | static struct h2p2_dbg_fpga __iomem *fpga; | ||
46 | static u16 led_state, hw_led_state; | ||
47 | |||
48 | local_irq_save(flags); | ||
49 | |||
50 | if (!(led_state & LED_STATE_ENABLED) && evt != led_start) | ||
51 | goto done; | ||
52 | |||
53 | switch (evt) { | ||
54 | case led_start: | ||
55 | if (!fpga) | ||
56 | fpga = ioremap(H2P2_DBG_FPGA_START, | ||
57 | H2P2_DBG_FPGA_SIZE); | ||
58 | if (fpga) { | ||
59 | led_state |= LED_STATE_ENABLED; | ||
60 | __raw_writew(~0, &fpga->leds); | ||
61 | } | ||
62 | break; | ||
63 | |||
64 | case led_stop: | ||
65 | case led_halted: | ||
66 | /* all leds off during suspend or shutdown */ | ||
67 | omap_set_gpio_dataout(GPIO_TIMER, 0); | ||
68 | omap_set_gpio_dataout(GPIO_IDLE, 0); | ||
69 | __raw_writew(~0, &fpga->leds); | ||
70 | led_state &= ~LED_STATE_ENABLED; | ||
71 | if (evt == led_halted) { | ||
72 | iounmap(fpga); | ||
73 | fpga = NULL; | ||
74 | } | ||
75 | goto done; | ||
76 | |||
77 | case led_claim: | ||
78 | led_state |= LED_STATE_CLAIMED; | ||
79 | hw_led_state = 0; | ||
80 | break; | ||
81 | |||
82 | case led_release: | ||
83 | led_state &= ~LED_STATE_CLAIMED; | ||
84 | break; | ||
85 | |||
86 | #ifdef CONFIG_LEDS_TIMER | ||
87 | case led_timer: | ||
88 | led_state ^= LED_TIMER_ON; | ||
89 | omap_set_gpio_dataout(GPIO_TIMER, led_state & LED_TIMER_ON); | ||
90 | goto done; | ||
91 | #endif | ||
92 | |||
93 | #ifdef CONFIG_LEDS_CPU | ||
94 | case led_idle_start: | ||
95 | omap_set_gpio_dataout(GPIO_IDLE, 1); | ||
96 | goto done; | ||
97 | |||
98 | case led_idle_end: | ||
99 | omap_set_gpio_dataout(GPIO_IDLE, 0); | ||
100 | goto done; | ||
101 | #endif | ||
102 | |||
103 | case led_green_on: | ||
104 | hw_led_state |= H2P2_DBG_FPGA_LED_GREEN; | ||
105 | break; | ||
106 | case led_green_off: | ||
107 | hw_led_state &= ~H2P2_DBG_FPGA_LED_GREEN; | ||
108 | break; | ||
109 | |||
110 | case led_amber_on: | ||
111 | hw_led_state |= H2P2_DBG_FPGA_LED_AMBER; | ||
112 | break; | ||
113 | case led_amber_off: | ||
114 | hw_led_state &= ~H2P2_DBG_FPGA_LED_AMBER; | ||
115 | break; | ||
116 | |||
117 | case led_red_on: | ||
118 | hw_led_state |= H2P2_DBG_FPGA_LED_RED; | ||
119 | break; | ||
120 | case led_red_off: | ||
121 | hw_led_state &= ~H2P2_DBG_FPGA_LED_RED; | ||
122 | break; | ||
123 | |||
124 | case led_blue_on: | ||
125 | hw_led_state |= H2P2_DBG_FPGA_LED_BLUE; | ||
126 | break; | ||
127 | case led_blue_off: | ||
128 | hw_led_state &= ~H2P2_DBG_FPGA_LED_BLUE; | ||
129 | break; | ||
130 | |||
131 | default: | ||
132 | break; | ||
133 | } | ||
134 | |||
135 | |||
136 | /* | ||
137 | * Actually burn the LEDs | ||
138 | */ | ||
139 | if (led_state & LED_STATE_CLAIMED) | ||
140 | __raw_writew(~hw_led_state, &fpga->leds); | ||
141 | |||
142 | done: | ||
143 | local_irq_restore(flags); | ||
144 | } | ||