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path: root/drivers/mfd/tc6387xb.c
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Diffstat (limited to 'drivers/mfd/tc6387xb.c')
-rw-r--r--drivers/mfd/tc6387xb.c164
1 files changed, 107 insertions, 57 deletions
diff --git a/drivers/mfd/tc6387xb.c b/drivers/mfd/tc6387xb.c
index 43222c12fec..591a331d8d8 100644
--- a/drivers/mfd/tc6387xb.c
+++ b/drivers/mfd/tc6387xb.c
@@ -17,33 +17,58 @@
#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 clk *clk32k = platform_get_drvdata(dev);
- struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
+ 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(clk32k);
+ clk_disable(tc6387xb->clk32k);
return 0;
}
static int tc6387xb_resume(struct platform_device *dev)
{
- struct clk *clk32k = platform_get_drvdata(dev);
- struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
+ struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
+ struct tc6387xb_platform_data *pdata = dev_get_platdata(&dev->dev);
- clk_enable(clk32k);
+ 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
@@ -53,12 +78,32 @@ static int tc6387xb_resume(struct platform_device *dev)
/*--------------------------------------------------------------------------*/
+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 clk *clk32k = platform_get_drvdata(dev);
+ struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
+
+ clk_enable(tc6387xb->clk32k);
- clk_enable(clk32k);
+ tmio_core_mmc_enable(tc6387xb->scr + 0x200, 0,
+ tc6387xb_mmc_resources[0].start & 0xfffe);
return 0;
}
@@ -66,38 +111,28 @@ static int tc6387xb_mmc_enable(struct platform_device *mmc)
static int tc6387xb_mmc_disable(struct platform_device *mmc)
{
struct platform_device *dev = to_platform_device(mmc->dev.parent);
- struct clk *clk32k = platform_get_drvdata(dev);
+ struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
- clk_disable(clk32k);
+ clk_disable(tc6387xb->clk32k);
return 0;
}
-/*--------------------------------------------------------------------------*/
-
-static struct resource tc6387xb_mmc_resources[] = {
- {
- .start = 0x800,
- .end = 0x9ff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = 0x200,
- .end = 0x2ff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = 0,
- .end = 0,
- .flags = IORESOURCE_IRQ,
- },
+static struct tmio_mmc_data tc6387xb_mmc_data = {
+ .hclk = 24000000,
+ .set_pwr = tc6387xb_mmc_pwr,
+ .set_clk_div = tc6387xb_mmc_clk_div,
};
-static struct mfd_cell tc6387xb_cells[] = {
+/*--------------------------------------------------------------------------*/
+
+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,
},
@@ -105,9 +140,10 @@ static struct mfd_cell tc6387xb_cells[] = {
static int tc6387xb_probe(struct platform_device *dev)
{
- struct tc6387xb_platform_data *pdata = dev->dev.platform_data;
- struct resource *iomem;
+ 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);
@@ -115,48 +151,73 @@ static int tc6387xb_probe(struct platform_device *dev)
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_resource;
+ 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;
}
- platform_set_drvdata(dev, clk32k);
+
+ tc6387xb->clk32k = clk32k;
+ platform_set_drvdata(dev, tc6387xb);
if (pdata && pdata->enable)
pdata->enable(dev);
printk(KERN_INFO "Toshiba tc6387xb initialised\n");
- tc6387xb_cells[TC6387XB_CELL_MMC].platform_data =
- &tc6387xb_cells[TC6387XB_CELL_MMC];
- tc6387xb_cells[TC6387XB_CELL_MMC].data_size =
- sizeof(tc6387xb_cells[TC6387XB_CELL_MMC]);
-
ret = mfd_add_devices(&dev->dev, dev->id, tc6387xb_cells,
- ARRAY_SIZE(tc6387xb_cells), iomem, irq);
+ ARRAY_SIZE(tc6387xb_cells), iomem, irq, NULL);
if (!ret)
return 0;
- clk_put(clk32k);
+ 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 clk *clk32k = platform_get_drvdata(dev);
+ struct tc6387xb *tc6387xb = platform_get_drvdata(dev);
mfd_remove_devices(&dev->dev);
- clk_disable(clk32k);
- clk_put(clk32k);
- platform_set_drvdata(dev, NULL);
+ iounmap(tc6387xb->scr);
+ release_resource(&tc6387xb->rscr);
+ clk_disable(tc6387xb->clk32k);
+ clk_put(tc6387xb->clk32k);
+ kfree(tc6387xb);
return 0;
}
@@ -172,21 +233,10 @@ static struct platform_driver tc6387xb_platform_driver = {
.resume = tc6387xb_resume,
};
-
-static int __init tc6387xb_init(void)
-{
- return platform_driver_register(&tc6387xb_platform_driver);
-}
-
-static void __exit tc6387xb_exit(void)
-{
- platform_driver_unregister(&tc6387xb_platform_driver);
-}
-
-module_init(tc6387xb_init);
-module_exit(tc6387xb_exit);
+module_platform_driver(tc6387xb_platform_driver);
MODULE_DESCRIPTION("Toshiba TC6387XB core driver");
MODULE_LICENSE("GPL v2");
MODULE_AUTHOR("Ian Molton");
MODULE_ALIAS("platform:tc6387xb");
+
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-10 19:26:48 +0000