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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,173 @@ | ||
| /** | ||
| * OMAP1 Dual-Mode Timers - platform device registration | ||
| * | ||
| * Contains first level initialization routines which internally | ||
| * generates timer device information and registers with linux | ||
| * device model. It also has low level function to chnage the timer | ||
| * input clock source. | ||
| * | ||
| * Copyright (C) 2011 Texas Instruments Incorporated - http://www.ti.com/ | ||
| * Tarun Kanti DebBarma <tarun.kanti@ti.com> | ||
| * Thara Gopinath <thara@ti.com> | ||
| * | ||
| * 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. | ||
| */ | ||
|
|
||
| #include <linux/clk.h> | ||
| #include <linux/io.h> | ||
| #include <linux/err.h> | ||
| #include <linux/slab.h> | ||
| #include <linux/platform_device.h> | ||
|
|
||
| #include <mach/irqs.h> | ||
|
|
||
| #include <plat/dmtimer.h> | ||
|
|
||
| #define OMAP1610_GPTIMER1_BASE 0xfffb1400 | ||
| #define OMAP1610_GPTIMER2_BASE 0xfffb1c00 | ||
| #define OMAP1610_GPTIMER3_BASE 0xfffb2400 | ||
| #define OMAP1610_GPTIMER4_BASE 0xfffb2c00 | ||
| #define OMAP1610_GPTIMER5_BASE 0xfffb3400 | ||
| #define OMAP1610_GPTIMER6_BASE 0xfffb3c00 | ||
| #define OMAP1610_GPTIMER7_BASE 0xfffb7400 | ||
| #define OMAP1610_GPTIMER8_BASE 0xfffbd400 | ||
|
|
||
| #define OMAP1_DM_TIMER_COUNT 8 | ||
|
|
||
| static int omap1_dm_timer_set_src(struct platform_device *pdev, | ||
| int source) | ||
| { | ||
| int n = (pdev->id - 1) << 1; | ||
| u32 l; | ||
|
|
||
| l = __raw_readl(MOD_CONF_CTRL_1) & ~(0x03 << n); | ||
| l |= source << n; | ||
| __raw_writel(l, MOD_CONF_CTRL_1); | ||
|
|
||
| return 0; | ||
| } | ||
|
|
||
|
|
||
| int __init omap1_dm_timer_init(void) | ||
| { | ||
| int i; | ||
| int ret; | ||
| struct dmtimer_platform_data *pdata; | ||
| struct platform_device *pdev; | ||
|
|
||
| if (!cpu_is_omap16xx()) | ||
| return 0; | ||
|
|
||
| for (i = 1; i <= OMAP1_DM_TIMER_COUNT; i++) { | ||
| struct resource res[2]; | ||
| u32 base, irq; | ||
|
|
||
| switch (i) { | ||
| case 1: | ||
| base = OMAP1610_GPTIMER1_BASE; | ||
| irq = INT_1610_GPTIMER1; | ||
| break; | ||
| case 2: | ||
| base = OMAP1610_GPTIMER2_BASE; | ||
| irq = INT_1610_GPTIMER2; | ||
| break; | ||
| case 3: | ||
| base = OMAP1610_GPTIMER3_BASE; | ||
| irq = INT_1610_GPTIMER3; | ||
| break; | ||
| case 4: | ||
| base = OMAP1610_GPTIMER4_BASE; | ||
| irq = INT_1610_GPTIMER4; | ||
| break; | ||
| case 5: | ||
| base = OMAP1610_GPTIMER5_BASE; | ||
| irq = INT_1610_GPTIMER5; | ||
| break; | ||
| case 6: | ||
| base = OMAP1610_GPTIMER6_BASE; | ||
| irq = INT_1610_GPTIMER6; | ||
| break; | ||
| case 7: | ||
| base = OMAP1610_GPTIMER7_BASE; | ||
| irq = INT_1610_GPTIMER7; | ||
| break; | ||
| case 8: | ||
| base = OMAP1610_GPTIMER8_BASE; | ||
| irq = INT_1610_GPTIMER8; | ||
| break; | ||
| default: | ||
| /* | ||
| * not supposed to reach here. | ||
| * this is to remove warning. | ||
| */ | ||
| return -EINVAL; | ||
| } | ||
|
|
||
| pdev = platform_device_alloc("omap_timer", i); | ||
| if (!pdev) { | ||
| pr_err("%s: Failed to device alloc for dmtimer%d\n", | ||
| __func__, i); | ||
| return -ENOMEM; | ||
| } | ||
|
|
||
| memset(res, 0, 2 * sizeof(struct resource)); | ||
| res[0].start = base; | ||
| res[0].end = base + 0x46; | ||
| res[0].flags = IORESOURCE_MEM; | ||
| res[1].start = irq; | ||
| res[1].end = irq; | ||
| res[1].flags = IORESOURCE_IRQ; | ||
| ret = platform_device_add_resources(pdev, res, | ||
| ARRAY_SIZE(res)); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Failed to add resources.\n", | ||
| __func__); | ||
| goto err_free_pdev; | ||
| } | ||
|
|
||
| pdata = kzalloc(sizeof(*pdata), GFP_KERNEL); | ||
| if (!pdata) { | ||
| dev_err(&pdev->dev, "%s: Failed to allocate pdata.\n", | ||
| __func__); | ||
| ret = -ENOMEM; | ||
| goto err_free_pdata; | ||
| } | ||
|
|
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| pdata->set_timer_src = omap1_dm_timer_set_src; | ||
| pdata->needs_manual_reset = 1; | ||
|
|
||
| ret = platform_device_add_data(pdev, pdata, sizeof(*pdata)); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Failed to add platform data.\n", | ||
| __func__); | ||
| goto err_free_pdata; | ||
| } | ||
|
|
||
| ret = platform_device_add(pdev); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Failed to add platform device.\n", | ||
| __func__); | ||
| goto err_free_pdata; | ||
| } | ||
|
|
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| dev_dbg(&pdev->dev, " Registered.\n"); | ||
| } | ||
|
|
||
| return 0; | ||
|
|
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| err_free_pdata: | ||
| kfree(pdata); | ||
|
|
||
| err_free_pdev: | ||
| platform_device_unregister(pdev); | ||
|
|
||
| return ret; | ||
| } | ||
| arch_initcall(omap1_dm_timer_init); |
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