1 // SPDX-License-Identifier: GPL-2.0-only
3 * OMAP1 Dual-Mode Timers - platform device registration
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
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>
15 #include <linux/clk.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>
23 #include <clocksource/timer-ti-dm.h>
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
36 #define OMAP1_DM_TIMER_COUNT 8
38 static int omap1_dm_timer_set_src(struct platform_device *pdev,
41 int n = (pdev->id - 1) << 1;
44 l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
46 omap_writel(l, MOD_CONF_CTRL_1);
51 static int __init omap1_dm_timer_init(void)
55 struct dmtimer_platform_data *pdata;
56 struct platform_device *pdev;
58 if (!cpu_is_omap16xx())
61 for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
62 struct resource res[2];
67 base = OMAP1610_GPTIMER1_BASE;
68 irq = INT_1610_GPTIMER1;
71 base = OMAP1610_GPTIMER2_BASE;
72 irq = INT_1610_GPTIMER2;
75 base = OMAP1610_GPTIMER3_BASE;
76 irq = INT_1610_GPTIMER3;
79 base = OMAP1610_GPTIMER4_BASE;
80 irq = INT_1610_GPTIMER4;
83 base = OMAP1610_GPTIMER5_BASE;
84 irq = INT_1610_GPTIMER5;
87 base = OMAP1610_GPTIMER6_BASE;
88 irq = INT_1610_GPTIMER6;
91 base = OMAP1610_GPTIMER7_BASE;
92 irq = INT_1610_GPTIMER7;
95 base = OMAP1610_GPTIMER8_BASE;
96 irq = INT_1610_GPTIMER8;
100 * not supposed to reach here.
101 * this is to remove warning.
106 pdev = platform_device_alloc("omap_timer", i);
108 pr_err("%s: Failed to device alloc for dmtimer%d\n",
113 memset(res, 0, 2 * sizeof(struct resource));
115 res[0].end = base + 0x46;
116 res[0].flags = IORESOURCE_MEM;
119 res[1].flags = IORESOURCE_IRQ;
120 ret = platform_device_add_resources(pdev, res,
123 dev_err(&pdev->dev, "%s: Failed to add resources.\n",
128 pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
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;
138 ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
140 dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
145 ret = platform_device_add(pdev);
147 dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
152 dev_dbg(&pdev->dev, " Registered.\n");
161 platform_device_put(pdev);
165 arch_initcall(omap1_dm_timer_init);