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authorHaojian Zhuang <haojian.zhuang@marvell.com>2010-03-16 17:12:37 +0800
committerEric Miao <eric.y.miao@gmail.com>2010-05-11 17:24:58 +0200
commit54c39b420f017c546fb130a05c14bdb0a7910f98 (patch)
tree44d77ca073fc7c7efc3f32f1d419a4ee16b1fbd8 /arch/arm/mach-pxa/ssp.c
parentbe1194cca55961b4dd98ea17fb24f0ffc6fa2213 (diff)
[ARM] pxa: move ssp into common plat-pxa
Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
Diffstat (limited to 'arch/arm/mach-pxa/ssp.c')
-rw-r--r--arch/arm/mach-pxa/ssp.c223
1 files changed, 0 insertions, 223 deletions
diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c
deleted file mode 100644
index a9b2d3eb8f32..000000000000
--- a/arch/arm/mach-pxa/ssp.c
+++ /dev/null
@@ -1,223 +0,0 @@
-/*
- * linux/arch/arm/mach-pxa/ssp.c
- *
- * based on linux/arch/arm/mach-sa1100/ssp.c by Russell King
- *
- * Copyright (C) 2003 Russell King.
- * Copyright (C) 2003 Wolfson Microelectronics PLC
- *
- * 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.
- *
- * PXA2xx SSP driver. This provides the generic core for simple
- * IO-based SSP applications and allows easy port setup for DMA access.
- *
- * Author: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
- */
-
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/sched.h>
-#include <linux/slab.h>
-#include <linux/errno.h>
-#include <linux/interrupt.h>
-#include <linux/ioport.h>
-#include <linux/init.h>
-#include <linux/mutex.h>
-#include <linux/clk.h>
-#include <linux/err.h>
-#include <linux/platform_device.h>
-#include <linux/io.h>
-
-#include <asm/irq.h>
-#include <mach/hardware.h>
-#include <mach/ssp.h>
-
-static DEFINE_MUTEX(ssp_lock);
-static LIST_HEAD(ssp_list);
-
-struct ssp_device *ssp_request(int port, const char *label)
-{
- struct ssp_device *ssp = NULL;
-
- mutex_lock(&ssp_lock);
-
- list_for_each_entry(ssp, &ssp_list, node) {
- if (ssp->port_id == port && ssp->use_count == 0) {
- ssp->use_count++;
- ssp->label = label;
- break;
- }
- }
-
- mutex_unlock(&ssp_lock);
-
- if (&ssp->node == &ssp_list)
- return NULL;
-
- return ssp;
-}
-EXPORT_SYMBOL(ssp_request);
-
-void ssp_free(struct ssp_device *ssp)
-{
- mutex_lock(&ssp_lock);
- if (ssp->use_count) {
- ssp->use_count--;
- ssp->label = NULL;
- } else
- dev_err(&ssp->pdev->dev, "device already free\n");
- mutex_unlock(&ssp_lock);
-}
-EXPORT_SYMBOL(ssp_free);
-
-static int __devinit ssp_probe(struct platform_device *pdev)
-{
- const struct platform_device_id *id = platform_get_device_id(pdev);
- struct resource *res;
- struct ssp_device *ssp;
- int ret = 0;
-
- ssp = kzalloc(sizeof(struct ssp_device), GFP_KERNEL);
- if (ssp == NULL) {
- dev_err(&pdev->dev, "failed to allocate memory");
- return -ENOMEM;
- }
- ssp->pdev = pdev;
-
- ssp->clk = clk_get(&pdev->dev, NULL);
- if (IS_ERR(ssp->clk)) {
- ret = PTR_ERR(ssp->clk);
- goto err_free;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "no memory resource defined\n");
- ret = -ENODEV;
- goto err_free_clk;
- }
-
- res = request_mem_region(res->start, res->end - res->start + 1,
- pdev->name);
- if (res == NULL) {
- dev_err(&pdev->dev, "failed to request memory resource\n");
- ret = -EBUSY;
- goto err_free_clk;
- }
-
- ssp->phys_base = res->start;
-
- ssp->mmio_base = ioremap(res->start, res->end - res->start + 1);
- if (ssp->mmio_base == NULL) {
- dev_err(&pdev->dev, "failed to ioremap() registers\n");
- ret = -ENODEV;
- goto err_free_mem;
- }
-
- ssp->irq = platform_get_irq(pdev, 0);
- if (ssp->irq < 0) {
- dev_err(&pdev->dev, "no IRQ resource defined\n");
- ret = -ENODEV;
- goto err_free_io;
- }
-
- res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
- if (res == NULL) {
- dev_err(&pdev->dev, "no SSP RX DRCMR defined\n");
- ret = -ENODEV;
- goto err_free_io;
- }
- ssp->drcmr_rx = res->start;
-
- res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
- if (res == NULL) {
- dev_err(&pdev->dev, "no SSP TX DRCMR defined\n");
- ret = -ENODEV;
- goto err_free_io;
- }
- ssp->drcmr_tx = res->start;
-
- /* PXA2xx/3xx SSP ports starts from 1 and the internal pdev->id
- * starts from 0, do a translation here
- */
- ssp->port_id = pdev->id + 1;
- ssp->use_count = 0;
- ssp->type = (int)id->driver_data;
-
- mutex_lock(&ssp_lock);
- list_add(&ssp->node, &ssp_list);
- mutex_unlock(&ssp_lock);
-
- platform_set_drvdata(pdev, ssp);
- return 0;
-
-err_free_io:
- iounmap(ssp->mmio_base);
-err_free_mem:
- release_mem_region(res->start, res->end - res->start + 1);
-err_free_clk:
- clk_put(ssp->clk);
-err_free:
- kfree(ssp);
- return ret;
-}
-
-static int __devexit ssp_remove(struct platform_device *pdev)
-{
- struct resource *res;
- struct ssp_device *ssp;
-
- ssp = platform_get_drvdata(pdev);
- if (ssp == NULL)
- return -ENODEV;
-
- iounmap(ssp->mmio_base);
-
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- release_mem_region(res->start, res->end - res->start + 1);
-
- clk_put(ssp->clk);
-
- mutex_lock(&ssp_lock);
- list_del(&ssp->node);
- mutex_unlock(&ssp_lock);
-
- kfree(ssp);
- return 0;
-}
-
-static const struct platform_device_id ssp_id_table[] = {
- { "pxa25x-ssp", PXA25x_SSP },
- { "pxa25x-nssp", PXA25x_NSSP },
- { "pxa27x-ssp", PXA27x_SSP },
- { },
-};
-
-static struct platform_driver ssp_driver = {
- .probe = ssp_probe,
- .remove = __devexit_p(ssp_remove),
- .driver = {
- .owner = THIS_MODULE,
- .name = "pxa2xx-ssp",
- },
- .id_table = ssp_id_table,
-};
-
-static int __init pxa_ssp_init(void)
-{
- return platform_driver_register(&ssp_driver);
-}
-
-static void __exit pxa_ssp_exit(void)
-{
- platform_driver_unregister(&ssp_driver);
-}
-
-arch_initcall(pxa_ssp_init);
-module_exit(pxa_ssp_exit);
-
-MODULE_DESCRIPTION("PXA SSP driver");
-MODULE_AUTHOR("Liam Girdwood");
-MODULE_LICENSE("GPL");