-
Notifications
You must be signed in to change notification settings - Fork 0
Commit
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
OMAP1: DMA: Implement in platform device model
Implement OMAP1 DMA as platform device and add support for registering through platform device layer using resource structures. Signed-off-by: G, Manjunath Kondaiah <manjugk@ti.com> Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
- Loading branch information
G, Manjunath Kondaiah
authored and
Tony Lindgren
committed
Dec 21, 2010
1 parent
531ce0d
commit 6568f7c
Showing
1 changed file
with
179 additions
and
0 deletions.
There are no files selected for viewing
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,179 @@ | ||
| /* | ||
| * OMAP1/OMAP7xx - specific DMA driver | ||
| * | ||
| * Copyright (C) 2003 - 2008 Nokia Corporation | ||
| * Author: Juha Yrjölä <juha.yrjola@nokia.com> | ||
| * DMA channel linking for 1610 by Samuel Ortiz <samuel.ortiz@nokia.com> | ||
| * Graphics DMA and LCD DMA graphics tranformations | ||
| * by Imre Deak <imre.deak@nokia.com> | ||
| * OMAP2/3 support Copyright (C) 2004-2007 Texas Instruments, Inc. | ||
| * Some functions based on earlier dma-omap.c Copyright (C) 2001 RidgeRun, Inc. | ||
| * | ||
| * Copyright (C) 2010 Texas Instruments Incorporated - http://www.ti.com/ | ||
| * Converted DMA library into platform driver | ||
| * - G, Manjunath Kondaiah <manjugk@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. | ||
| */ | ||
|
|
||
| #include <linux/err.h> | ||
| #include <linux/io.h> | ||
| #include <linux/slab.h> | ||
| #include <linux/module.h> | ||
| #include <linux/init.h> | ||
| #include <linux/device.h> | ||
|
|
||
| #include <plat/dma.h> | ||
| #include <plat/tc.h> | ||
| #include <plat/irqs.h> | ||
|
|
||
| #define OMAP1_DMA_BASE (0xfffed800) | ||
|
|
||
| static struct resource res[] __initdata = { | ||
| [0] = { | ||
| .start = OMAP1_DMA_BASE, | ||
| .end = OMAP1_DMA_BASE + SZ_2K - 1, | ||
| .flags = IORESOURCE_MEM, | ||
| }, | ||
| [1] = { | ||
| .name = "0", | ||
| .start = INT_DMA_CH0_6, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [2] = { | ||
| .name = "1", | ||
| .start = INT_DMA_CH1_7, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [3] = { | ||
| .name = "2", | ||
| .start = INT_DMA_CH2_8, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [4] = { | ||
| .name = "3", | ||
| .start = INT_DMA_CH3, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [5] = { | ||
| .name = "4", | ||
| .start = INT_DMA_CH4, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [6] = { | ||
| .name = "5", | ||
| .start = INT_DMA_CH5, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [7] = { | ||
| .name = "6", | ||
| .start = INT_1610_DMA_CH6, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| /* irq's for omap16xx and omap7xx */ | ||
| [8] = { | ||
| .name = "7", | ||
| .start = INT_1610_DMA_CH7, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [9] = { | ||
| .name = "8", | ||
| .start = INT_1610_DMA_CH8, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [10] = { | ||
| .name = "9", | ||
| .start = INT_1610_DMA_CH9, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [11] = { | ||
| .name = "10", | ||
| .start = INT_1610_DMA_CH10, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [12] = { | ||
| .name = "11", | ||
| .start = INT_1610_DMA_CH11, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [13] = { | ||
| .name = "12", | ||
| .start = INT_1610_DMA_CH12, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [14] = { | ||
| .name = "13", | ||
| .start = INT_1610_DMA_CH13, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [15] = { | ||
| .name = "14", | ||
| .start = INT_1610_DMA_CH14, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [16] = { | ||
| .name = "15", | ||
| .start = INT_1610_DMA_CH15, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| [17] = { | ||
| .name = "16", | ||
| .start = INT_DMA_LCD, | ||
| .flags = IORESOURCE_IRQ, | ||
| }, | ||
| }; | ||
|
|
||
| static int __init omap1_system_dma_init(void) | ||
| { | ||
| struct omap_system_dma_plat_info *p; | ||
| struct platform_device *pdev; | ||
| int ret; | ||
|
|
||
| pdev = platform_device_alloc("omap_dma_system", 0); | ||
| if (!pdev) { | ||
| pr_err("%s: Unable to device alloc for dma\n", | ||
| __func__); | ||
| return -ENOMEM; | ||
| } | ||
|
|
||
| ret = platform_device_add_resources(pdev, res, ARRAY_SIZE(res)); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", | ||
| __func__, pdev->name, pdev->id); | ||
| goto exit_device_del; | ||
| } | ||
|
|
||
| p = kzalloc(sizeof(struct omap_system_dma_plat_info), GFP_KERNEL); | ||
| if (!p) { | ||
| dev_err(&pdev->dev, "%s: Unable to allocate 'p' for %s\n", | ||
| __func__, pdev->name); | ||
| ret = -ENOMEM; | ||
| goto exit_device_put; | ||
| } | ||
|
|
||
| ret = platform_device_add_data(pdev, p, sizeof(*p)); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", | ||
| __func__, pdev->name, pdev->id); | ||
| goto exit_device_put; | ||
| } | ||
|
|
||
| ret = platform_device_add(pdev); | ||
| if (ret) { | ||
| dev_err(&pdev->dev, "%s: Unable to add resources for %s%d\n", | ||
| __func__, pdev->name, pdev->id); | ||
| goto exit_device_put; | ||
| } | ||
|
|
||
| return ret; | ||
|
|
||
| exit_device_put: | ||
| platform_device_put(pdev); | ||
| exit_device_del: | ||
| platform_device_del(pdev); | ||
|
|
||
| return ret; | ||
| } | ||
| arch_initcall(omap1_system_dma_init); |