mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-08-21 16:29:59 +00:00
![Geert Uytterhoeven](/assets/img/avatar_default.png)
As of commit 03e361b25e
("mfd: Stop setting
refcounting pointers in original mfd_cell arrays"), the "cell" parameter of
mfd_add_devices() is "const" again. Hence make all cell data passed to
mfd_add_devices() const where possible.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
242 lines
5.4 KiB
C
242 lines
5.4 KiB
C
/*
|
|
* Toshiba TC6387XB support
|
|
* Copyright (c) 2005 Ian Molton
|
|
*
|
|
* 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 file contains TC6387XB base support.
|
|
*
|
|
*/
|
|
|
|
#include <linux/module.h>
|
|
#include <linux/platform_device.h>
|
|
#include <linux/clk.h>
|
|
#include <linux/err.h>
|
|
#include <linux/mfd/core.h>
|
|
#include <linux/mfd/tmio.h>
|
|
#include <linux/mfd/tc6387xb.h>
|
|
#include <linux/slab.h>
|
|
|
|
enum {
|
|
TC6387XB_CELL_MMC,
|
|
};
|
|
|
|
struct tc6387xb {
|
|
void __iomem *scr;
|
|
struct clk *clk32k;
|
|
struct resource rscr;
|
|
};
|
|
|
|
static struct resource tc6387xb_mmc_resources[] = {
|
|
{
|
|
.start = 0x800,
|
|
.end = 0x9ff,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
{
|
|
.start = 0,
|
|
.end = 0,
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
#ifdef CONFIG_PM
|
|
static int tc6387xb_suspend(struct platform_device *dev, pm_message_t state)
|
|
{
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
|
|
|
|
if (pdata && pdata->suspend)
|
|
pdata->suspend(dev);
|
|
clk_disable(tc6387xb->clk32k);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tc6387xb_resume(struct platform_device *dev)
|
|
{
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
|
|
|
|
clk_enable(tc6387xb->clk32k);
|
|
if (pdata && pdata->resume)
|
|
pdata->resume(dev);
|
|
|
|
tmio_core_mmc_resume(tc6387xb->scr + 0x200, 0,
|
|
tc6387xb_mmc_resources[0].start & 0xfffe);
|
|
|
|
return 0;
|
|
}
|
|
#else
|
|
#define tc6387xb_suspend NULL
|
|
#define tc6387xb_resume NULL
|
|
#endif
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
static void tc6387xb_mmc_pwr(struct platform_device *mmc, int state)
|
|
{
|
|
struct platform_device *dev = to_platform_device(mmc->dev.parent);
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
|
|
tmio_core_mmc_pwr(tc6387xb->scr + 0x200, 0, state);
|
|
}
|
|
|
|
static void tc6387xb_mmc_clk_div(struct platform_device *mmc, int state)
|
|
{
|
|
struct platform_device *dev = to_platform_device(mmc->dev.parent);
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
|
|
tmio_core_mmc_clk_div(tc6387xb->scr + 0x200, 0, state);
|
|
}
|
|
|
|
|
|
static int tc6387xb_mmc_enable(struct platform_device *mmc)
|
|
{
|
|
struct platform_device *dev = to_platform_device(mmc->dev.parent);
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
|
|
clk_enable(tc6387xb->clk32k);
|
|
|
|
tmio_core_mmc_enable(tc6387xb->scr + 0x200, 0,
|
|
tc6387xb_mmc_resources[0].start & 0xfffe);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int tc6387xb_mmc_disable(struct platform_device *mmc)
|
|
{
|
|
struct platform_device *dev = to_platform_device(mmc->dev.parent);
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
|
|
clk_disable(tc6387xb->clk32k);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static struct tmio_mmc_data tc6387xb_mmc_data = {
|
|
.hclk = 24000000,
|
|
.set_pwr = tc6387xb_mmc_pwr,
|
|
.set_clk_div = tc6387xb_mmc_clk_div,
|
|
};
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
static const struct mfd_cell tc6387xb_cells[] = {
|
|
[TC6387XB_CELL_MMC] = {
|
|
.name = "tmio-mmc",
|
|
.enable = tc6387xb_mmc_enable,
|
|
.disable = tc6387xb_mmc_disable,
|
|
.platform_data = &tc6387xb_mmc_data,
|
|
.pdata_size = sizeof(tc6387xb_mmc_data),
|
|
.num_resources = ARRAY_SIZE(tc6387xb_mmc_resources),
|
|
.resources = tc6387xb_mmc_resources,
|
|
},
|
|
};
|
|
|
|
static int tc6387xb_probe(struct platform_device *dev)
|
|
{
|
|
struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
|
|
struct resource *iomem, *rscr;
|
|
struct clk *clk32k;
|
|
struct tc6387xb *tc6387xb;
|
|
int irq, ret;
|
|
|
|
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
|
|
if (!iomem) {
|
|
return -EINVAL;
|
|
}
|
|
|
|
tc6387xb = kzalloc(sizeof *tc6387xb, GFP_KERNEL);
|
|
if (!tc6387xb)
|
|
return -ENOMEM;
|
|
|
|
ret = platform_get_irq(dev, 0);
|
|
if (ret >= 0)
|
|
irq = ret;
|
|
else
|
|
goto err_no_irq;
|
|
|
|
clk32k = clk_get(&dev->dev, "CLK_CK32K");
|
|
if (IS_ERR(clk32k)) {
|
|
ret = PTR_ERR(clk32k);
|
|
goto err_no_clk;
|
|
}
|
|
|
|
rscr = &tc6387xb->rscr;
|
|
rscr->name = "tc6387xb-core";
|
|
rscr->start = iomem->start;
|
|
rscr->end = iomem->start + 0xff;
|
|
rscr->flags = IORESOURCE_MEM;
|
|
|
|
ret = request_resource(iomem, rscr);
|
|
if (ret)
|
|
goto err_resource;
|
|
|
|
tc6387xb->scr = ioremap(rscr->start, resource_size(rscr));
|
|
if (!tc6387xb->scr) {
|
|
ret = -ENOMEM;
|
|
goto err_ioremap;
|
|
}
|
|
|
|
tc6387xb->clk32k = clk32k;
|
|
platform_set_drvdata(dev, tc6387xb);
|
|
|
|
if (pdata && pdata->enable)
|
|
pdata->enable(dev);
|
|
|
|
printk(KERN_INFO "Toshiba tc6387xb initialised\n");
|
|
|
|
ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells,
|
|
ARRAY_SIZE(tc6387xb_cells), iomem, irq, NULL);
|
|
|
|
if (!ret)
|
|
return 0;
|
|
|
|
iounmap(tc6387xb->scr);
|
|
err_ioremap:
|
|
release_resource(&tc6387xb->rscr);
|
|
err_resource:
|
|
clk_put(clk32k);
|
|
err_no_clk:
|
|
err_no_irq:
|
|
kfree(tc6387xb);
|
|
return ret;
|
|
}
|
|
|
|
static int tc6387xb_remove(struct platform_device *dev)
|
|
{
|
|
struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
|
|
|
|
mfd_remove_devices(&dev->dev);
|
|
iounmap(tc6387xb->scr);
|
|
release_resource(&tc6387xb->rscr);
|
|
clk_disable(tc6387xb->clk32k);
|
|
clk_put(tc6387xb->clk32k);
|
|
kfree(tc6387xb);
|
|
|
|
return 0;
|
|
}
|
|
|
|
|
|
static struct platform_driver tc6387xb_platform_driver = {
|
|
.driver = {
|
|
.name = "tc6387xb",
|
|
},
|
|
.probe = tc6387xb_probe,
|
|
.remove = tc6387xb_remove,
|
|
.suspend = tc6387xb_suspend,
|
|
.resume = tc6387xb_resume,
|
|
};
|
|
|
|
module_platform_driver(tc6387xb_platform_driver);
|
|
|
|
MODULE_DESCRIPTION("Toshiba TC6387XB core driver");
|
|
MODULE_LICENSE("GPL v2");
|
|
MODULE_AUTHOR("Ian Molton");
|
|
MODULE_ALIAS("platform:tc6387xb");
|
|
|