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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * OMAP1 Dual-Mode Timers - platform device registration
4 *
5 * Contains first level initialization routines which internally
6 * generates timer device information and registers with linux
7 * device model. It also has a low level function to change the timer
8 * input clock source.
9 *
10 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
11 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
12 * Thara Gopinath <thara@ti.com>
13 */
14
15#include <linux/clk.h>
16#include <linux/io.h>
17#include <linux/err.h>
18#include <linux/slab.h>
19#include <linux/platform_device.h>
20#include <linux/platform_data/dmtimer-omap.h>
21#include <linux/soc/ti/omap1-io.h>
22
23#include <clocksource/timer-ti-dm.h>
24
25#include "soc.h"
26
27#define OMAP1610_GPTIMER1_BASE 0xfffb1400
28#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
29#define OMAP1610_GPTIMER3_BASE 0xfffb2400
30#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
31#define OMAP1610_GPTIMER5_BASE 0xfffb3400
32#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
33#define OMAP1610_GPTIMER7_BASE 0xfffb7400
34#define OMAP1610_GPTIMER8_BASE 0xfffbd400
35
36#define OMAP1_DM_TIMER_COUNT 8
37
38static int omap1_dm_timer_set_src(struct platform_device *pdev,
39 int source)
40{
41 int n = (pdev->id - 1) << 1;
42 u32 l;
43
44 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
45 l |= source << n;
46 omap_writel(l, MOD_CONF_CTRL_1);
47
48 return 0;
49}
50
51static int __init omap1_dm_timer_init(void)
52{
53 int i;
54 int ret;
55 struct dmtimer_platform_data *pdata;
56 struct platform_device *pdev;
57
58 if (!cpu_is_omap16xx())
59 return 0;
60
61 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
62 struct resource res[2];
63 u32 base, irq;
64
65 switch (i) {
66 case 1:
67 base = OMAP1610_GPTIMER1_BASE;
68 irq = INT_1610_GPTIMER1;
69 break;
70 case 2:
71 base = OMAP1610_GPTIMER2_BASE;
72 irq = INT_1610_GPTIMER2;
73 break;
74 case 3:
75 base = OMAP1610_GPTIMER3_BASE;
76 irq = INT_1610_GPTIMER3;
77 break;
78 case 4:
79 base = OMAP1610_GPTIMER4_BASE;
80 irq = INT_1610_GPTIMER4;
81 break;
82 case 5:
83 base = OMAP1610_GPTIMER5_BASE;
84 irq = INT_1610_GPTIMER5;
85 break;
86 case 6:
87 base = OMAP1610_GPTIMER6_BASE;
88 irq = INT_1610_GPTIMER6;
89 break;
90 case 7:
91 base = OMAP1610_GPTIMER7_BASE;
92 irq = INT_1610_GPTIMER7;
93 break;
94 case 8:
95 base = OMAP1610_GPTIMER8_BASE;
96 irq = INT_1610_GPTIMER8;
97 break;
98 default:
99 /*
100 * not supposed to reach here.
101 * this is to remove warning.
102 */
103 return -EINVAL;
104 }
105
106 pdev = platform_device_alloc("omap_timer", i);
107 if (!pdev) {
108 pr_err("%s: Failed to device alloc for dmtimer%d\n",
109 __func__, i);
110 return -ENOMEM;
111 }
112
113 memset(res, 0, 2 * sizeof(struct resource));
114 res[0].start = base;
115 res[0].end = base + 0x46;
116 res[0].flags = IORESOURCE_MEM;
117 res[1].start = irq;
118 res[1].end = irq;
119 res[1].flags = IORESOURCE_IRQ;
120 ret = platform_device_add_resources(pdev, res,
121 ARRAY_SIZE(res));
122 if (ret) {
123 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
124 __func__);
125 goto err_free_pdev;
126 }
127
128 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
129 if (!pdata) {
130 ret = -ENOMEM;
131 goto err_free_pdata;
132 }
133
134 pdata->set_timer_src = omap1_dm_timer_set_src;
135 pdata->timer_capability = OMAP_TIMER_ALWON |
136 OMAP_TIMER_NEEDS_RESET | OMAP_TIMER_HAS_DSP_IRQ;
137
138 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
139 if (ret) {
140 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
141 __func__);
142 goto err_free_pdata;
143 }
144
145 ret = platform_device_add(pdev);
146 if (ret) {
147 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
148 __func__);
149 goto err_free_pdata;
150 }
151
152 dev_dbg(&pdev->dev, " Registered.\n");
153 }
154
155 return 0;
156
157err_free_pdata:
158 kfree(pdata);
159
160err_free_pdev:
161 platform_device_put(pdev);
162
163 return ret;
164}
165arch_initcall(omap1_dm_timer_init);
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * OMAP1 Dual-Mode Timers - platform device registration
4 *
5 * Contains first level initialization routines which internally
6 * generates timer device information and registers with linux
7 * device model. It also has a low level function to change the timer
8 * input clock source.
9 *
10 * Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
11 * Tarun Kanti DebBarma <tarun.kanti@ti.com>
12 * Thara Gopinath <thara@ti.com>
13 */
14
15#include <linux/clk.h>
16#include <linux/io.h>
17#include <linux/err.h>
18#include <linux/slab.h>
19#include <linux/platform_device.h>
20#include <linux/platform_data/dmtimer-omap.h>
21#include <linux/soc/ti/omap1-io.h>
22
23#include <clocksource/timer-ti-dm.h>
24
25#include "soc.h"
26
27#define OMAP1610_GPTIMER1_BASE 0xfffb1400
28#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
29#define OMAP1610_GPTIMER3_BASE 0xfffb2400
30#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
31#define OMAP1610_GPTIMER5_BASE 0xfffb3400
32#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
33#define OMAP1610_GPTIMER7_BASE 0xfffb7400
34#define OMAP1610_GPTIMER8_BASE 0xfffbd400
35
36#define OMAP1_DM_TIMER_COUNT 8
37
38static int omap1_dm_timer_set_src(struct platform_device *pdev,
39 int source)
40{
41 int n = (pdev->id - 1) << 1;
42 u32 l;
43
44 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
45 l |= source << n;
46 omap_writel(l, MOD_CONF_CTRL_1);
47
48 return 0;
49}
50
51static int __init omap1_dm_timer_init(void)
52{
53 int i;
54 int ret;
55 struct dmtimer_platform_data *pdata;
56 struct platform_device *pdev;
57
58 if (!cpu_is_omap16xx())
59 return 0;
60
61 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
62 struct resource res[2];
63 u32 base, irq;
64
65 switch (i) {
66 case 1:
67 base = OMAP1610_GPTIMER1_BASE;
68 irq = INT_1610_GPTIMER1;
69 break;
70 case 2:
71 base = OMAP1610_GPTIMER2_BASE;
72 irq = INT_1610_GPTIMER2;
73 break;
74 case 3:
75 base = OMAP1610_GPTIMER3_BASE;
76 irq = INT_1610_GPTIMER3;
77 break;
78 case 4:
79 base = OMAP1610_GPTIMER4_BASE;
80 irq = INT_1610_GPTIMER4;
81 break;
82 case 5:
83 base = OMAP1610_GPTIMER5_BASE;
84 irq = INT_1610_GPTIMER5;
85 break;
86 case 6:
87 base = OMAP1610_GPTIMER6_BASE;
88 irq = INT_1610_GPTIMER6;
89 break;
90 case 7:
91 base = OMAP1610_GPTIMER7_BASE;
92 irq = INT_1610_GPTIMER7;
93 break;
94 case 8:
95 base = OMAP1610_GPTIMER8_BASE;
96 irq = INT_1610_GPTIMER8;
97 break;
98 default:
99 /*
100 * not supposed to reach here.
101 * this is to remove warning.
102 */
103 return -EINVAL;
104 }
105
106 pdev = platform_device_alloc("omap_timer", i);
107 if (!pdev) {
108 pr_err("%s: Failed to device alloc for dmtimer%d\n",
109 __func__, i);
110 return -ENOMEM;
111 }
112
113 memset(res, 0, 2 * sizeof(struct resource));
114 res[0].start = base;
115 res[0].end = base + 0x46;
116 res[0].flags = IORESOURCE_MEM;
117 res[1].start = irq;
118 res[1].end = irq;
119 res[1].flags = IORESOURCE_IRQ;
120 ret = platform_device_add_resources(pdev, res,
121 ARRAY_SIZE(res));
122 if (ret) {
123 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
124 __func__);
125 goto err_free_pdev;
126 }
127
128 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
129 if (!pdata) {
130 ret = -ENOMEM;
131 goto err_free_pdata;
132 }
133
134 pdata->set_timer_src = omap1_dm_timer_set_src;
135 pdata->timer_capability = OMAP_TIMER_ALWON |
136 OMAP_TIMER_NEEDS_RESET | OMAP_TIMER_HAS_DSP_IRQ;
137
138 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
139 if (ret) {
140 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
141 __func__);
142 goto err_free_pdata;
143 }
144
145 ret = platform_device_add(pdev);
146 if (ret) {
147 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
148 __func__);
149 goto err_free_pdata;
150 }
151
152 dev_dbg(&pdev->dev, " Registered.\n");
153 }
154
155 return 0;
156
157err_free_pdata:
158 kfree(pdata);
159
160err_free_pdev:
161 platform_device_put(pdev);
162
163 return ret;
164}
165arch_initcall(omap1_dm_timer_init);