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5a729246e5
Based on the normalized pattern:
this program is free software you can redistribute it and/or modify it
under the terms of the gnu general public license version 2 as
published by the free software foundation this program is distributed
as is without any warranty of any kind whether express or implied
without even the implied warranty of merchantability or fitness for a
particular purpose see the gnu general public license for more details
extracted by the scancode license scanner the SPDX license identifier
GPL-2.0-only
has been chosen to replace the boilerplate/reference.
Reviewed-by: Allison Randal <allison@lohutok.net>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
165 lines
3.7 KiB
C
165 lines
3.7 KiB
C
// SPDX-License-Identifier: GPL-2.0-only
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/*
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* OMAP1 Dual-Mode Timers - platform device registration
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*
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* Contains first level initialization routines which internally
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* generates timer device information and registers with linux
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* device model. It also has a low level function to change the timer
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* input clock source.
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*
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* Copyright (C) 2011 Texas Instruments Incorporated - https://www.ti.com/
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* Tarun Kanti DebBarma <tarun.kanti@ti.com>
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* Thara Gopinath <thara@ti.com>
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*/
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#include <linux/clk.h>
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#include <linux/io.h>
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#include <linux/err.h>
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#include <linux/slab.h>
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#include <linux/platform_device.h>
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#include <linux/platform_data/dmtimer-omap.h>
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#include <linux/soc/ti/omap1-io.h>
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#include <clocksource/timer-ti-dm.h>
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#include "soc.h"
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#define OMAP1610_GPTIMER1_BASE 0xfffb1400
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#define OMAP1610_GPTIMER2_BASE 0xfffb1c00
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#define OMAP1610_GPTIMER3_BASE 0xfffb2400
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#define OMAP1610_GPTIMER4_BASE 0xfffb2c00
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#define OMAP1610_GPTIMER5_BASE 0xfffb3400
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#define OMAP1610_GPTIMER6_BASE 0xfffb3c00
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#define OMAP1610_GPTIMER7_BASE 0xfffb7400
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#define OMAP1610_GPTIMER8_BASE 0xfffbd400
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#define OMAP1_DM_TIMER_COUNT 8
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static int omap1_dm_timer_set_src(struct platform_device *pdev,
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int source)
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{
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int n = (pdev->id - 1) << 1;
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u32 l;
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l = omap_readl(MOD_CONF_CTRL_1) & ~(0x03 << n);
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l |= source << n;
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omap_writel(l, MOD_CONF_CTRL_1);
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return 0;
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}
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static int __init omap1_dm_timer_init(void)
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{
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int i;
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int ret;
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struct dmtimer_platform_data *pdata;
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struct platform_device *pdev;
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if (!cpu_is_omap16xx())
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return 0;
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for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) {
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struct resource res[2];
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u32 base, irq;
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switch (i) {
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case 1:
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base = OMAP1610_GPTIMER1_BASE;
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irq = INT_1610_GPTIMER1;
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break;
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case 2:
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base = OMAP1610_GPTIMER2_BASE;
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irq = INT_1610_GPTIMER2;
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break;
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case 3:
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base = OMAP1610_GPTIMER3_BASE;
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irq = INT_1610_GPTIMER3;
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break;
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case 4:
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base = OMAP1610_GPTIMER4_BASE;
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irq = INT_1610_GPTIMER4;
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break;
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case 5:
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base = OMAP1610_GPTIMER5_BASE;
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irq = INT_1610_GPTIMER5;
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break;
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case 6:
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base = OMAP1610_GPTIMER6_BASE;
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irq = INT_1610_GPTIMER6;
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break;
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case 7:
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base = OMAP1610_GPTIMER7_BASE;
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irq = INT_1610_GPTIMER7;
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break;
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case 8:
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base = OMAP1610_GPTIMER8_BASE;
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irq = INT_1610_GPTIMER8;
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break;
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default:
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/*
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* not supposed to reach here.
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* this is to remove warning.
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*/
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return -EINVAL;
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}
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pdev = platform_device_alloc("omap_timer", i);
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if (!pdev) {
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pr_err("%s: Failed to device alloc for dmtimer%d\n",
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__func__, i);
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return -ENOMEM;
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}
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memset(res, 0, 2 * sizeof(struct resource));
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res[0].start = base;
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res[0].end = base + 0x46;
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res[0].flags = IORESOURCE_MEM;
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res[1].start = irq;
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res[1].end = irq;
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res[1].flags = IORESOURCE_IRQ;
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ret = platform_device_add_resources(pdev, res,
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ARRAY_SIZE(res));
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if (ret) {
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dev_err(&pdev->dev, "%s: Failed to add resources.\n",
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__func__);
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goto err_free_pdev;
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}
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pdata = kzalloc(sizeof(*pdata), GFP_KERNEL);
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if (!pdata) {
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ret = -ENOMEM;
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goto err_free_pdata;
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}
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pdata->set_timer_src = omap1_dm_timer_set_src;
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pdata->timer_capability = OMAP_TIMER_ALWON |
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OMAP_TIMER_NEEDS_RESET | OMAP_TIMER_HAS_DSP_IRQ;
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ret = platform_device_add_data(pdev, pdata, sizeof(*pdata));
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if (ret) {
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dev_err(&pdev->dev, "%s: Failed to add platform data.\n",
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__func__);
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goto err_free_pdata;
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}
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ret = platform_device_add(pdev);
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if (ret) {
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dev_err(&pdev->dev, "%s: Failed to add platform device.\n",
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__func__);
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goto err_free_pdata;
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}
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dev_dbg(&pdev->dev, " Registered.\n");
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}
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return 0;
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err_free_pdata:
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kfree(pdata);
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err_free_pdev:
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platform_device_unregister(pdev);
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return ret;
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}
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arch_initcall(omap1_dm_timer_init);
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