diff options
Diffstat (limited to 'drivers/mfd/mcp-sa11x0.c')
| -rw-r--r-- | drivers/mfd/mcp-sa11x0.c | 182 |
1 files changed, 116 insertions, 66 deletions
diff --git a/drivers/mfd/mcp-sa11x0.c b/drivers/mfd/mcp-sa11x0.c index 2dab02d9ac8b..9adc2eb69492 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"); |