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path: root/drivers/mfd/t7l66xb.c
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Diffstat (limited to 'drivers/mfd/t7l66xb.c')
-rw-r--r--drivers/mfd/t7l66xb.c186
1 files changed, 108 insertions, 78 deletions
diff --git a/drivers/mfd/t7l66xb.c b/drivers/mfd/t7l66xb.c
index 49a0fffc02a..9e04a748598 100644
--- a/drivers/mfd/t7l66xb.c
+++ b/drivers/mfd/t7l66xb.c
@@ -24,8 +24,11 @@
#include <linux/kernel.h>
#include <linux/module.h>
+#include <linux/err.h>
#include <linux/io.h>
+#include <linux/slab.h>
#include <linux/irq.h>
+#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <linux/mfd/tmio.h>
@@ -36,6 +39,19 @@ enum {
T7L66XB_CELL_MMC,
};
+static const struct resource t7l66xb_mmc_resources[] = {
+ {
+ .start = 0x800,
+ .end = 0x9ff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_T7L66XB_MMC,
+ .end = IRQ_T7L66XB_MMC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
#define SCR_REVID 0x08 /* b Revision ID */
#define SCR_IMR 0x42 /* b Interrupt Mask */
#define SCR_DEV_CTL 0xe0 /* b Device control */
@@ -56,6 +72,8 @@ struct t7l66xb {
spinlock_t lock;
struct resource rscr;
+ struct clk *clk48m;
+ struct clk *clk32k;
int irq;
int irq_base;
};
@@ -65,13 +83,11 @@ struct t7l66xb {
static int t7l66xb_mmc_enable(struct platform_device *mmc)
{
struct platform_device *dev = to_platform_device(mmc->dev.parent);
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
unsigned long flags;
u8 dev_ctl;
- if (pdata->enable_clk32k)
- pdata->enable_clk32k(dev);
+ clk_enable(t7l66xb->clk32k);
spin_lock_irqsave(&t7l66xb->lock, flags);
@@ -81,13 +97,15 @@ static int t7l66xb_mmc_enable(struct platform_device *mmc)
spin_unlock_irqrestore(&t7l66xb->lock, flags);
+ tmio_core_mmc_enable(t7l66xb->scr + 0x200, 0,
+ t7l66xb_mmc_resources[0].start & 0xfffe);
+
return 0;
}
static int t7l66xb_mmc_disable(struct platform_device *mmc)
{
struct platform_device *dev = to_platform_device(mmc->dev.parent);
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
unsigned long flags;
u8 dev_ctl;
@@ -100,33 +118,36 @@ static int t7l66xb_mmc_disable(struct platform_device *mmc)
spin_unlock_irqrestore(&t7l66xb->lock, flags);
- if (pdata->disable_clk32k)
- pdata->disable_clk32k(dev);
+ clk_disable(t7l66xb->clk32k);
return 0;
}
+static void t7l66xb_mmc_pwr(struct platform_device *mmc, int state)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_pwr(t7l66xb->scr + 0x200, 0, state);
+}
+
+static void t7l66xb_mmc_clk_div(struct platform_device *mmc, int state)
+{
+ struct platform_device *dev = to_platform_device(mmc->dev.parent);
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+
+ tmio_core_mmc_clk_div(t7l66xb->scr + 0x200, 0, state);
+}
+
/*--------------------------------------------------------------------------*/
-const static struct resource t7l66xb_mmc_resources[] = {
- {
- .start = 0x800,
- .end = 0x9ff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = 0x200,
- .end = 0x2ff,
- .flags = IORESOURCE_MEM,
- },
- {
- .start = IRQ_T7L66XB_MMC,
- .end = IRQ_T7L66XB_MMC,
- .flags = IORESOURCE_IRQ,
- },
+static struct tmio_mmc_data t7166xb_mmc_data = {
+ .hclk = 24000000,
+ .set_pwr = t7l66xb_mmc_pwr,
+ .set_clk_div = t7l66xb_mmc_clk_div,
};
-const static struct resource t7l66xb_nand_resources[] = {
+static const struct resource t7l66xb_nand_resources[] = {
{
.start = 0xc00,
.end = 0xc07,
@@ -149,6 +170,8 @@ static struct mfd_cell t7l66xb_cells[] = {
.name = "tmio-mmc",
.enable = t7l66xb_mmc_enable,
.disable = t7l66xb_mmc_disable,
+ .platform_data = &t7166xb_mmc_data,
+ .pdata_size = sizeof(t7166xb_mmc_data),
.num_resources = ARRAY_SIZE(t7l66xb_mmc_resources),
.resources = t7l66xb_mmc_resources,
},
@@ -164,7 +187,7 @@ static struct mfd_cell t7l66xb_cells[] = {
/* Handle the T7L66XB interrupt mux */
static void t7l66xb_irq(unsigned int irq, struct irq_desc *desc)
{
- struct t7l66xb *t7l66xb = get_irq_data(irq);
+ struct t7l66xb *t7l66xb = irq_get_handler_data(irq);
unsigned int isr;
unsigned int i, irq_base;
@@ -177,37 +200,37 @@ static void t7l66xb_irq(unsigned int irq, struct irq_desc *desc)
generic_handle_irq(irq_base + i);
}
-static void t7l66xb_irq_mask(unsigned int irq)
+static void t7l66xb_irq_mask(struct irq_data *data)
{
- struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
+ struct t7l66xb *t7l66xb = irq_data_get_irq_chip_data(data);
unsigned long flags;
u8 imr;
spin_lock_irqsave(&t7l66xb->lock, flags);
imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
- imr |= 1 << (irq - t7l66xb->irq_base);
+ imr |= 1 << (data->irq - t7l66xb->irq_base);
tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
spin_unlock_irqrestore(&t7l66xb->lock, flags);
}
-static void t7l66xb_irq_unmask(unsigned int irq)
+static void t7l66xb_irq_unmask(struct irq_data *data)
{
- struct t7l66xb *t7l66xb = get_irq_chip_data(irq);
+ struct t7l66xb *t7l66xb = irq_data_get_irq_chip_data(data);
unsigned long flags;
u8 imr;
spin_lock_irqsave(&t7l66xb->lock, flags);
imr = tmio_ioread8(t7l66xb->scr + SCR_IMR);
- imr &= ~(1 << (irq - t7l66xb->irq_base));
+ imr &= ~(1 << (data->irq - t7l66xb->irq_base));
tmio_iowrite8(imr, t7l66xb->scr + SCR_IMR);
spin_unlock_irqrestore(&t7l66xb->lock, flags);
}
static struct irq_chip t7l66xb_chip = {
- .name = "t7l66xb",
- .ack = t7l66xb_irq_mask,
- .mask = t7l66xb_irq_mask,
- .unmask = t7l66xb_irq_unmask,
+ .name = "t7l66xb",
+ .irq_ack = t7l66xb_irq_mask,
+ .irq_mask = t7l66xb_irq_mask,
+ .irq_unmask = t7l66xb_irq_unmask,
};
/*--------------------------------------------------------------------------*/
@@ -221,17 +244,16 @@ static void t7l66xb_attach_irq(struct platform_device *dev)
irq_base = t7l66xb->irq_base;
for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
- set_irq_chip(irq, &t7l66xb_chip);
- set_irq_chip_data(irq, t7l66xb);
- set_irq_handler(irq, handle_level_irq);
+ irq_set_chip_and_handler(irq, &t7l66xb_chip, handle_level_irq);
+ irq_set_chip_data(irq, t7l66xb);
#ifdef CONFIG_ARM
set_irq_flags(irq, IRQF_VALID | IRQF_PROBE);
#endif
}
- set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
- set_irq_data(t7l66xb->irq, t7l66xb);
- set_irq_chained_handler(t7l66xb->irq, t7l66xb_irq);
+ irq_set_irq_type(t7l66xb->irq, IRQ_TYPE_EDGE_FALLING);
+ irq_set_handler_data(t7l66xb->irq, t7l66xb);
+ irq_set_chained_handler(t7l66xb->irq, t7l66xb_irq);
}
static void t7l66xb_detach_irq(struct platform_device *dev)
@@ -241,15 +263,15 @@ static void t7l66xb_detach_irq(struct platform_device *dev)
irq_base = t7l66xb->irq_base;
- set_irq_chained_handler(t7l66xb->irq, NULL);
- set_irq_data(t7l66xb->irq, NULL);
+ irq_set_chained_handler(t7l66xb->irq, NULL);
+ irq_set_handler_data(t7l66xb->irq, NULL);
for (irq = irq_base; irq < irq_base + T7L66XB_NR_IRQS; irq++) {
#ifdef CONFIG_ARM
set_irq_flags(irq, 0);
#endif
- set_irq_chip(irq, NULL);
- set_irq_chip_data(irq, NULL);
+ irq_set_chip(irq, NULL);
+ irq_set_chip_data(irq, NULL);
}
}
@@ -258,21 +280,28 @@ static void t7l66xb_detach_irq(struct platform_device *dev)
#ifdef CONFIG_PM
static int t7l66xb_suspend(struct platform_device *dev, pm_message_t state)
{
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
if (pdata && pdata->suspend)
pdata->suspend(dev);
+ clk_disable(t7l66xb->clk48m);
return 0;
}
static int t7l66xb_resume(struct platform_device *dev)
{
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
+ struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
+ clk_enable(t7l66xb->clk48m);
if (pdata && pdata->resume)
pdata->resume(dev);
+ tmio_core_mmc_enable(t7l66xb->scr + 0x200, 0,
+ t7l66xb_mmc_resources[0].start & 0xfffe);
+
return 0;
}
#else
@@ -284,11 +313,14 @@ static int t7l66xb_resume(struct platform_device *dev)
static int t7l66xb_probe(struct platform_device *dev)
{
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
struct t7l66xb *t7l66xb;
struct resource *iomem, *rscr;
int ret;
+ if (pdata == NULL)
+ return -EINVAL;
+
iomem = platform_get_resource(dev, IORESOURCE_MEM, 0);
if (!iomem)
return -EINVAL;
@@ -309,6 +341,18 @@ static int t7l66xb_probe(struct platform_device *dev)
t7l66xb->irq_base = pdata->irq_base;
+ t7l66xb->clk32k = clk_get(&dev->dev, "CLK_CK32K");
+ if (IS_ERR(t7l66xb->clk32k)) {
+ ret = PTR_ERR(t7l66xb->clk32k);
+ goto err_clk32k_get;
+ }
+
+ t7l66xb->clk48m = clk_get(&dev->dev, "CLK_CK48M");
+ if (IS_ERR(t7l66xb->clk48m)) {
+ ret = PTR_ERR(t7l66xb->clk48m);
+ goto err_clk48m_get;
+ }
+
rscr = &t7l66xb->rscr;
rscr->name = "t7l66xb-core";
rscr->start = iomem->start;
@@ -319,12 +363,14 @@ static int t7l66xb_probe(struct platform_device *dev)
if (ret)
goto err_request_scr;
- t7l66xb->scr = ioremap(rscr->start, rscr->end - rscr->start + 1);
+ t7l66xb->scr = ioremap(rscr->start, resource_size(rscr));
if (!t7l66xb->scr) {
ret = -ENOMEM;
goto err_ioremap;
}
+ clk_enable(t7l66xb->clk48m);
+
if (pdata && pdata->enable)
pdata->enable(dev);
@@ -337,20 +383,12 @@ static int t7l66xb_probe(struct platform_device *dev)
t7l66xb_attach_irq(dev);
- t7l66xb_cells[T7L66XB_CELL_NAND].driver_data = pdata->nand_data;
- t7l66xb_cells[T7L66XB_CELL_NAND].platform_data =
- &t7l66xb_cells[T7L66XB_CELL_NAND];
- t7l66xb_cells[T7L66XB_CELL_NAND].data_size =
- sizeof(t7l66xb_cells[T7L66XB_CELL_NAND]);
-
- t7l66xb_cells[T7L66XB_CELL_MMC].platform_data =
- &t7l66xb_cells[T7L66XB_CELL_MMC];
- t7l66xb_cells[T7L66XB_CELL_MMC].data_size =
- sizeof(t7l66xb_cells[T7L66XB_CELL_MMC]);
+ t7l66xb_cells[T7L66XB_CELL_NAND].platform_data = pdata->nand_data;
+ t7l66xb_cells[T7L66XB_CELL_NAND].pdata_size = sizeof(*pdata->nand_data);
ret = mfd_add_devices(&dev->dev, dev->id,
t7l66xb_cells, ARRAY_SIZE(t7l66xb_cells),
- iomem, t7l66xb->irq_base);
+ iomem, t7l66xb->irq_base, NULL);
if (!ret)
return 0;
@@ -359,25 +397,31 @@ static int t7l66xb_probe(struct platform_device *dev)
iounmap(t7l66xb->scr);
err_ioremap:
release_resource(&t7l66xb->rscr);
-err_noirq:
err_request_scr:
+ clk_put(t7l66xb->clk48m);
+err_clk48m_get:
+ clk_put(t7l66xb->clk32k);
+err_clk32k_get:
+err_noirq:
kfree(t7l66xb);
return ret;
}
static int t7l66xb_remove(struct platform_device *dev)
{
- struct t7l66xb_platform_data *pdata = dev->dev.platform_data;
+ struct t7l66xb_platform_data *pdata = dev_get_platdata(&dev->dev);
struct t7l66xb *t7l66xb = platform_get_drvdata(dev);
int ret;
ret = pdata->disable(dev);
-
+ clk_disable(t7l66xb->clk48m);
+ clk_put(t7l66xb->clk48m);
+ clk_disable(t7l66xb->clk32k);
+ clk_put(t7l66xb->clk32k);
t7l66xb_detach_irq(dev);
iounmap(t7l66xb->scr);
release_resource(&t7l66xb->rscr);
mfd_remove_devices(&dev->dev);
- platform_set_drvdata(dev, NULL);
kfree(t7l66xb);
return ret;
@@ -397,21 +441,7 @@ static struct platform_driver t7l66xb_platform_driver = {
/*--------------------------------------------------------------------------*/
-static int __init t7l66xb_init(void)
-{
- int retval = 0;
-
- retval = platform_driver_register(&t7l66xb_platform_driver);
- return retval;
-}
-
-static void __exit t7l66xb_exit(void)
-{
- platform_driver_unregister(&t7l66xb_platform_driver);
-}
-
-module_init(t7l66xb_init);
-module_exit(t7l66xb_exit);
+module_platform_driver(t7l66xb_platform_driver);
MODULE_DESCRIPTION("Toshiba T7L66XB core driver");
MODULE_LICENSE("GPL v2");
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-12-05 18:25:53 +0000