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1/**
2 * OMAP1 Dual-Mode Timers - platform device registration
3 *
4 * Contains first level initialization routines which internally
5 * generates timer device information and registers with linux
6 * device model. It also has low level function to chnage the timer
7 * input clock source.
8 *
9 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
10 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
11 * Thara Gopinath <thara@ti.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
18 * kind, whether express or implied; without even the implied warranty
19 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 */
22
23#include <linux/clk.h>
24#include <linux/io.h>
25#include <linux/err.h>
26#include <linux/slab.h>
27#include <linux/platform_device.h>
28#include <linux/platform_data/dmtimer-omap.h>
29
30#include <mach/irqs.h>
31
32#include <plat/dmtimer.h>
33
34#define OMAP1610_GPTIMER1_BASE 0xfffb1400
35#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
36#define OMAP1610_GPTIMER3_BASE 0xfffb2400
37#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
38#define OMAP1610_GPTIMER5_BASE 0xfffb3400
39#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
40#define OMAP1610_GPTIMER7_BASE 0xfffb7400
41#define OMAP1610_GPTIMER8_BASE 0xfffbd400
42
43#define OMAP1_DM_TIMER_COUNT 8
44
45static int omap1_dm_timer_set_src(struct platform_device *pdev,
46 int source)
47{
48 int n = (pdev->id - 1) << 1;
49 u32 l;
50
51 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
52 l |= source << n;
53 omap_writel(l, MOD_CONF_CTRL_1);
54
55 return 0;
56}
57
58static int __init omap1_dm_timer_init(void)
59{
60 int i;
61 int ret;
62 struct dmtimer_platform_data *pdata;
63 struct platform_device *pdev;
64
65 if (!cpu_is_omap16xx())
66 return 0;
67
68 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
69 struct resource res[2];
70 u32 base, irq;
71
72 switch (i) {
73 case 1:
74 base = OMAP1610_GPTIMER1_BASE;
75 irq = INT_1610_GPTIMER1;
76 break;
77 case 2:
78 base = OMAP1610_GPTIMER2_BASE;
79 irq = INT_1610_GPTIMER2;
80 break;
81 case 3:
82 base = OMAP1610_GPTIMER3_BASE;
83 irq = INT_1610_GPTIMER3;
84 break;
85 case 4:
86 base = OMAP1610_GPTIMER4_BASE;
87 irq = INT_1610_GPTIMER4;
88 break;
89 case 5:
90 base = OMAP1610_GPTIMER5_BASE;
91 irq = INT_1610_GPTIMER5;
92 break;
93 case 6:
94 base = OMAP1610_GPTIMER6_BASE;
95 irq = INT_1610_GPTIMER6;
96 break;
97 case 7:
98 base = OMAP1610_GPTIMER7_BASE;
99 irq = INT_1610_GPTIMER7;
100 break;
101 case 8:
102 base = OMAP1610_GPTIMER8_BASE;
103 irq = INT_1610_GPTIMER8;
104 break;
105 default:
106 /*
107 * not supposed to reach here.
108 * this is to remove warning.
109 */
110 return -EINVAL;
111 }
112
113 pdev = platform_device_alloc("omap_timer", i);
114 if (!pdev) {
115 pr_err("%s: Failed to device alloc for dmtimer%d\n",
116 __func__, i);
117 return -ENOMEM;
118 }
119
120 memset(res, 0, 2 * sizeof(struct resource));
121 res[0].start = base;
122 res[0].end = base + 0x46;
123 res[0].flags = IORESOURCE_MEM;
124 res[1].start = irq;
125 res[1].end = irq;
126 res[1].flags = IORESOURCE_IRQ;
127 ret = platform_device_add_resources(pdev, res,
128 ARRAY_SIZE(res));
129 if (ret) {
130 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
131 __func__);
132 goto err_free_pdev;
133 }
134
135 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
136 if (!pdata) {
137 dev_err(&pdev->dev, "%s: Failed to allocate pdata.\n",
138 __func__);
139 ret = -ENOMEM;
140 goto err_free_pdata;
141 }
142
143 pdata->set_timer_src = omap1_dm_timer_set_src;
144 pdata->timer_capability = OMAP_TIMER_ALWON |
145 OMAP_TIMER_NEEDS_RESET | OMAP_TIMER_HAS_DSP_IRQ;
146
147 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
148 if (ret) {
149 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
150 __func__);
151 goto err_free_pdata;
152 }
153
154 ret = platform_device_add(pdev);
155 if (ret) {
156 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
157 __func__);
158 goto err_free_pdata;
159 }
160
161 dev_dbg(&pdev->dev, " Registered.\n");
162 }
163
164 return 0;
165
166err_free_pdata:
167 kfree(pdata);
168
169err_free_pdev:
170 platform_device_unregister(pdev);
171
172 return ret;
173}
174arch_initcall(omap1_dm_timer_init);
1/**
2 * OMAP1 Dual-Mode Timers - platform device registration
3 *
4 * Contains first level initialization routines which internally
5 * generates timer device information and registers with linux
6 * device model. It also has low level function to chnage the timer
7 * input clock source.
8 *
9 * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/
10 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
11 * Thara Gopinath <thara@ti.com>
12 *
13 * This program is free software; you can redistribute it and/or modify
14 * it under the terms of the GNU General Public License version 2 as
15 * published by the Free Software Foundation.
16 *
17 * This program is distributed "as is" WITHOUT ANY WARRANTY of any
18 * kind, whether express or implied; without even the implied warranty
19 * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 * GNU General Public License for more details.
21 */
22
23#include <linux/clk.h>
24#include <linux/io.h>
25#include <linux/err.h>
26#include <linux/slab.h>
27#include <linux/platform_device.h>
28
29#include <mach/irqs.h>
30
31#include <plat/dmtimer.h>
32
33#define OMAP1610_GPTIMER1_BASE 0xfffb1400
34#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
35#define OMAP1610_GPTIMER3_BASE 0xfffb2400
36#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
37#define OMAP1610_GPTIMER5_BASE 0xfffb3400
38#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
39#define OMAP1610_GPTIMER7_BASE 0xfffb7400
40#define OMAP1610_GPTIMER8_BASE 0xfffbd400
41
42#define OMAP1_DM_TIMER_COUNT 8
43
44static int omap1_dm_timer_set_src(struct platform_device *pdev,
45 int source)
46{
47 int n = (pdev->id - 1) << 1;
48 u32 l;
49
50 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
51 l |= source << n;
52 omap_writel(l, MOD_CONF_CTRL_1);
53
54 return 0;
55}
56
57static int __init omap1_dm_timer_init(void)
58{
59 int i;
60 int ret;
61 struct dmtimer_platform_data *pdata;
62 struct platform_device *pdev;
63
64 if (!cpu_is_omap16xx())
65 return 0;
66
67 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
68 struct resource res[2];
69 u32 base, irq;
70
71 switch (i) {
72 case 1:
73 base = OMAP1610_GPTIMER1_BASE;
74 irq = INT_1610_GPTIMER1;
75 break;
76 case 2:
77 base = OMAP1610_GPTIMER2_BASE;
78 irq = INT_1610_GPTIMER2;
79 break;
80 case 3:
81 base = OMAP1610_GPTIMER3_BASE;
82 irq = INT_1610_GPTIMER3;
83 break;
84 case 4:
85 base = OMAP1610_GPTIMER4_BASE;
86 irq = INT_1610_GPTIMER4;
87 break;
88 case 5:
89 base = OMAP1610_GPTIMER5_BASE;
90 irq = INT_1610_GPTIMER5;
91 break;
92 case 6:
93 base = OMAP1610_GPTIMER6_BASE;
94 irq = INT_1610_GPTIMER6;
95 break;
96 case 7:
97 base = OMAP1610_GPTIMER7_BASE;
98 irq = INT_1610_GPTIMER7;
99 break;
100 case 8:
101 base = OMAP1610_GPTIMER8_BASE;
102 irq = INT_1610_GPTIMER8;
103 break;
104 default:
105 /*
106 * not supposed to reach here.
107 * this is to remove warning.
108 */
109 return -EINVAL;
110 }
111
112 pdev = platform_device_alloc("omap_timer", i);
113 if (!pdev) {
114 pr_err("%s: Failed to device alloc for dmtimer%d\n",
115 __func__, i);
116 return -ENOMEM;
117 }
118
119 memset(res, 0, 2 * sizeof(struct resource));
120 res[0].start = base;
121 res[0].end = base + 0x46;
122 res[0].flags = IORESOURCE_MEM;
123 res[1].start = irq;
124 res[1].end = irq;
125 res[1].flags = IORESOURCE_IRQ;
126 ret = platform_device_add_resources(pdev, res,
127 ARRAY_SIZE(res));
128 if (ret) {
129 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
130 __func__);
131 goto err_free_pdev;
132 }
133
134 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
135 if (!pdata) {
136 dev_err(&pdev->dev, "%s: Failed to allocate pdata.\n",
137 __func__);
138 ret = -ENOMEM;
139 goto err_free_pdata;
140 }
141
142 pdata->set_timer_src = omap1_dm_timer_set_src;
143 pdata->needs_manual_reset = 1;
144
145 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
146 if (ret) {
147 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
148 __func__);
149 goto err_free_pdata;
150 }
151
152 ret = platform_device_add(pdev);
153 if (ret) {
154 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
155 __func__);
156 goto err_free_pdata;
157 }
158
159 dev_dbg(&pdev->dev, " Registered.\n");
160 }
161
162 return 0;
163
164err_free_pdata:
165 kfree(pdata);
166
167err_free_pdev:
168 platform_device_unregister(pdev);
169
170 return ret;
171}
172arch_initcall(omap1_dm_timer_init);