2 * OMAP1 Dual-Mode Timers - platform device registration
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
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>
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.
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.
23 #include <linux/clk.h>
25 #include <linux/err.h>
26 #include <linux/slab.h>
27 #include <linux/platform_device.h>
29 #include <mach/irqs.h>
31 #include <plat/dmtimer.h>
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
42 #define OMAP1_DM_TIMER_COUNT 8
44 static int omap1_dm_timer_set_src(struct platform_device *pdev,
47 int n = (pdev->id - 1) << 1;
50 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
52 omap_writel(l, MOD_CONF_CTRL_1);
57 static int __init omap1_dm_timer_init(void)
61 struct dmtimer_platform_data *pdata;
62 struct platform_device *pdev;
64 if (!cpu_is_omap16xx())
67 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
68 struct resource res[2];
73 base = OMAP1610_GPTIMER1_BASE;
74 irq = INT_1610_GPTIMER1;
77 base = OMAP1610_GPTIMER2_BASE;
78 irq = INT_1610_GPTIMER2;
81 base = OMAP1610_GPTIMER3_BASE;
82 irq = INT_1610_GPTIMER3;
85 base = OMAP1610_GPTIMER4_BASE;
86 irq = INT_1610_GPTIMER4;
89 base = OMAP1610_GPTIMER5_BASE;
90 irq = INT_1610_GPTIMER5;
93 base = OMAP1610_GPTIMER6_BASE;
94 irq = INT_1610_GPTIMER6;
97 base = OMAP1610_GPTIMER7_BASE;
98 irq = INT_1610_GPTIMER7;
101 base = OMAP1610_GPTIMER8_BASE;
102 irq = INT_1610_GPTIMER8;
106 * not supposed to reach here.
107 * this is to remove warning.
112 pdev = platform_device_alloc("omap_timer", i);
114 pr_err("%s: Failed to device alloc for dmtimer%d\n",
119 memset(res, 0, 2 * sizeof(struct resource));
121 res[0].end = base + 0x46;
122 res[0].flags = IORESOURCE_MEM;
125 res[1].flags = IORESOURCE_IRQ;
126 ret = platform_device_add_resources(pdev, res,
129 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
134 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
136 dev_err(&pdev->dev, "%s: Failed to allocate pdata.\n",
142 pdata->set_timer_src = omap1_dm_timer_set_src;
143 pdata->timer_capability = OMAP_TIMER_ALWON |
144 OMAP_TIMER_NEEDS_RESET;
146 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
148 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
153 ret = platform_device_add(pdev);
155 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
160 dev_dbg(&pdev->dev, " Registered.\n");
169 platform_device_unregister(pdev);
173 arch_initcall(omap1_dm_timer_init);