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path: root/drivers/mfd/mcp-sa11x0.c
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Diffstat (limited to 'drivers/mfd/mcp-sa11x0.c')
-rw-r--r--drivers/mfd/mcp-sa11x0.c182
1 files changed, 116 insertions, 66 deletions
diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c
index 2dab02d9ac8..9adc2eb6949 100644
--- a/drivers/mfd/mcp-sa11x0.c
+++ b/drivers/mfd/mcp-sa11x0.c
@@ -19,6 +19,7 @@
#include <linux/spinlock.h>
#include <linux/platform_device.h>
#include <linux/mfd/mcp.h>
+#include <linux/io.h>
#include <mach/dma.h>
#include <mach/hardware.h>
@@ -26,12 +27,19 @@
#include <asm/system.h>
#include <mach/mcp.h>
-#include <mach/assabet.h>
-
+/* Register offsets */
+#define MCCR0 0x00
+#define MCDR0 0x08
+#define MCDR1 0x0C
+#define MCDR2 0x10
+#define MCSR 0x18
+#define MCCR1 0x00
struct mcp_sa11x0 {
- u32 mccr0;
- u32 mccr1;
+ u32 mccr0;
+ u32 mccr1;
+ unsigned char *mccr0_base;
+ unsigned char *mccr1_base;
};
#define priv(mcp) ((struct mcp_sa11x0 *)mcp_priv(mcp))
@@ -39,25 +47,25 @@ struct mcp_sa11x0 {
static void
mcp_sa11x0_set_telecom_divisor(struct mcp *mcp, unsigned int divisor)
{
- unsigned int mccr0;
+ struct mcp_sa11x0 *priv = priv(mcp);
divisor /= 32;
- mccr0 = Ser4MCCR0 & ~0x00007f00;
- mccr0 |= divisor << 8;
- Ser4MCCR0 = mccr0;
+ priv->mccr0 &= ~0x00007f00;
+ priv->mccr0 |= divisor << 8;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
}
static void
mcp_sa11x0_set_audio_divisor(struct mcp *mcp, unsigned int divisor)
{
- unsigned int mccr0;
+ struct mcp_sa11x0 *priv = priv(mcp);
divisor /= 32;
- mccr0 = Ser4MCCR0 & ~0x0000007f;
- mccr0 |= divisor;
- Ser4MCCR0 = mccr0;
+ priv->mccr0 &= ~0x0000007f;
+ priv->mccr0 |= divisor;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
}
/*
@@ -71,12 +79,16 @@ mcp_sa11x0_write(struct mcp *mcp, unsigned int reg, unsigned int val)
{
int ret = -ETIME;
int i;
+ u32 mcpreg;
+ struct mcp_sa11x0 *priv = priv(mcp);
- Ser4MCDR2 = reg << 17 | MCDR2_Wr | (val & 0xffff);
+ mcpreg = reg << 17 | MCDR2_Wr | (val & 0xffff);
+ __raw_writel(mcpreg, priv->mccr0_base + MCDR2);
for (i = 0; i < 2; i++) {
udelay(mcp->rw_timeout);
- if (Ser4MCSR & MCSR_CWC) {
+ mcpreg = __raw_readl(priv->mccr0_base + MCSR);
+ if (mcpreg & MCSR_CWC) {
ret = 0;
break;
}
@@ -97,13 +109,18 @@ mcp_sa11x0_read(struct mcp *mcp, unsigned int reg)
{
int ret = -ETIME;
int i;
+ u32 mcpreg;
+ struct mcp_sa11x0 *priv = priv(mcp);
- Ser4MCDR2 = reg << 17 | MCDR2_Rd;
+ mcpreg = reg << 17 | MCDR2_Rd;
+ __raw_writel(mcpreg, priv->mccr0_base + MCDR2);
for (i = 0; i < 2; i++) {
udelay(mcp->rw_timeout);
- if (Ser4MCSR & MCSR_CRC) {
- ret = Ser4MCDR2 & 0xffff;
+ mcpreg = __raw_readl(priv->mccr0_base + MCSR);
+ if (mcpreg & MCSR_CRC) {
+ ret = __raw_readl(priv->mccr0_base + MCDR2)
+ & 0xffff;
break;
}
}
@@ -116,13 +133,19 @@ mcp_sa11x0_read(struct mcp *mcp, unsigned int reg)
static void mcp_sa11x0_enable(struct mcp *mcp)
{
- Ser4MCSR = -1;
- Ser4MCCR0 |= MCCR0_MCE;
+ struct mcp_sa11x0 *priv = priv(mcp);
+
+ __raw_writel(-1, priv->mccr0_base + MCSR);
+ priv->mccr0 |= MCCR0_MCE;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
}
static void mcp_sa11x0_disable(struct mcp *mcp)
{
- Ser4MCCR0 &= ~MCCR0_MCE;
+ struct mcp_sa11x0 *priv = priv(mcp);
+
+ priv->mccr0 &= ~MCCR0_MCE;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
}
/*
@@ -142,50 +165,69 @@ static int mcp_sa11x0_probe(struct platform_device *pdev)
struct mcp_plat_data *data = pdev->dev.platform_data;
struct mcp *mcp;
int ret;
+ struct mcp_sa11x0 *priv;
+ struct resource *res_mem0, *res_mem1;
+ u32 size0, size1;
if (!data)
return -ENODEV;
- if (!request_mem_region(0x80060000, 0x60, "sa11x0-mcp"))
+ if (!data->codec)
+ return -ENODEV;
+
+ res_mem0 = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!res_mem0)
+ return -ENODEV;
+ size0 = res_mem0->end - res_mem0->start + 1;
+
+ res_mem1 = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (!res_mem1)
+ return -ENODEV;
+ size1 = res_mem1->end - res_mem1->start + 1;
+
+ if (!request_mem_region(res_mem0->start, size0, "sa11x0-mcp"))
return -EBUSY;
+ if (!request_mem_region(res_mem1->start, size1, "sa11x0-mcp")) {
+ ret = -EBUSY;
+ goto release;
+ }
+
mcp = mcp_host_alloc(&pdev->dev, sizeof(struct mcp_sa11x0));
if (!mcp) {
ret = -ENOMEM;
- goto release;
+ goto release2;
}
+ priv = priv(mcp);
+
mcp->owner = THIS_MODULE;
mcp->ops = &mcp_sa11x0;
mcp->sclk_rate = data->sclk_rate;
- mcp->dma_audio_rd = DMA_Ser4MCP0Rd;
- mcp->dma_audio_wr = DMA_Ser4MCP0Wr;
- mcp->dma_telco_rd = DMA_Ser4MCP1Rd;
- mcp->dma_telco_wr = DMA_Ser4MCP1Wr;
- mcp->gpio_base = data->gpio_base;
+ mcp->dma_audio_rd = DDAR_DevAdd(res_mem0->start + MCDR0)
+ + DDAR_DevRd + DDAR_Brst4 + DDAR_8BitDev;
+ mcp->dma_audio_wr = DDAR_DevAdd(res_mem0->start + MCDR0)
+ + DDAR_DevWr + DDAR_Brst4 + DDAR_8BitDev;
+ mcp->dma_telco_rd = DDAR_DevAdd(res_mem0->start + MCDR1)
+ + DDAR_DevRd + DDAR_Brst4 + DDAR_8BitDev;
+ mcp->dma_telco_wr = DDAR_DevAdd(res_mem0->start + MCDR1)
+ + DDAR_DevWr + DDAR_Brst4 + DDAR_8BitDev;
+ mcp->codec = data->codec;
platform_set_drvdata(pdev, mcp);
- if (machine_is_assabet()) {
- ASSABET_BCR_set(ASSABET_BCR_CODEC_RST);
- }
-
- /*
- * Setup the PPC unit correctly.
- */
- PPDR &= ~PPC_RXD4;
- PPDR |= PPC_TXD4 | PPC_SCLK | PPC_SFRM;
- PSDR |= PPC_RXD4;
- PSDR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
- PPSR &= ~(PPC_TXD4 | PPC_SCLK | PPC_SFRM);
-
/*
* Initialise device. Note that we initially
* set the sampling rate to minimum.
*/
- Ser4MCSR = -1;
- Ser4MCCR1 = data->mccr1;
- Ser4MCCR0 = data->mccr0 | 0x7f7f;
+ priv->mccr0_base = ioremap(res_mem0->start, size0);
+ priv->mccr1_base = ioremap(res_mem1->start, size1);
+
+ __raw_writel(-1, priv->mccr0_base + MCSR);
+ priv->mccr1 = data->mccr1;
+ priv->mccr0 = data->mccr0 | 0x7f7f;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
+ __raw_writel(priv->mccr1, priv->mccr1_base + MCCR1);
/*
* Calculate the read/write timeout (us) from the bit clock
@@ -195,36 +237,53 @@ static int mcp_sa11x0_probe(struct platform_device *pdev)
mcp->rw_timeout = (64 * 3 * 1000000 + mcp->sclk_rate - 1) /
mcp->sclk_rate;
- ret = mcp_host_register(mcp);
+ ret = mcp_host_register(mcp, data->codec_pdata);
if (ret == 0)
goto out;
+ release2:
+ release_mem_region(res_mem1->start, size1);
release:
- release_mem_region(0x80060000, 0x60);
+ release_mem_region(res_mem0->start, size0);
platform_set_drvdata(pdev, NULL);
out:
return ret;
}
-static int mcp_sa11x0_remove(struct platform_device *dev)
+static int mcp_sa11x0_remove(struct platform_device *pdev)
{
- struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp *mcp = platform_get_drvdata(pdev);
+ struct mcp_sa11x0 *priv = priv(mcp);
+ struct resource *res_mem;
+ u32 size;
- platform_set_drvdata(dev, NULL);
+ platform_set_drvdata(pdev, NULL);
mcp_host_unregister(mcp);
- release_mem_region(0x80060000, 0x60);
+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (res_mem) {
+ size = res_mem->end - res_mem->start + 1;
+ release_mem_region(res_mem->start, size);
+ }
+ res_mem = platform_get_resource(pdev, IORESOURCE_MEM, 1);
+ if (res_mem) {
+ size = res_mem->end - res_mem->start + 1;
+ release_mem_region(res_mem->start, size);
+ }
+ iounmap(priv->mccr0_base);
+ iounmap(priv->mccr1_base);
return 0;
}
static int mcp_sa11x0_suspend(struct platform_device *dev, pm_message_t state)
{
struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp_sa11x0 *priv = priv(mcp);
+ u32 mccr0;
- priv(mcp)->mccr0 = Ser4MCCR0;
- priv(mcp)->mccr1 = Ser4MCCR1;
- Ser4MCCR0 &= ~MCCR0_MCE;
+ mccr0 = priv->mccr0 & ~MCCR0_MCE;
+ __raw_writel(mccr0, priv->mccr0_base + MCCR0);
return 0;
}
@@ -232,9 +291,10 @@ static int mcp_sa11x0_suspend(struct platform_device *dev, pm_message_t state)
static int mcp_sa11x0_resume(struct platform_device *dev)
{
struct mcp *mcp = platform_get_drvdata(dev);
+ struct mcp_sa11x0 *priv = priv(mcp);
- Ser4MCCR1 = priv(mcp)->mccr1;
- Ser4MCCR0 = priv(mcp)->mccr0;
+ __raw_writel(priv->mccr0, priv->mccr0_base + MCCR0);
+ __raw_writel(priv->mccr1, priv->mccr1_base + MCCR1);
return 0;
}
@@ -251,24 +311,14 @@ static struct platform_driver mcp_sa11x0_driver = {
.resume = mcp_sa11x0_resume,
.driver = {
.name = "sa11x0-mcp",
+ .owner = THIS_MODULE,
},
};
/*
* This needs re-working
*/
-static int __init mcp_sa11x0_init(void)
-{
- return platform_driver_register(&mcp_sa11x0_driver);
-}
-
-static void __exit mcp_sa11x0_exit(void)
-{
- platform_driver_unregister(&mcp_sa11x0_driver);
-}
-
-module_init(mcp_sa11x0_init);
-module_exit(mcp_sa11x0_exit);
+module_platform_driver(mcp_sa11x0_driver);
MODULE_AUTHOR("Russell King <rmk@arm.linux.org.uk>");
MODULE_DESCRIPTION("SA11x0 multimedia communications port driver");
generated by cgit v1.2.3-18-g5258 (git 2.32.0) at 2024-12-03 12:45:19 +0000