MFD: DaVinci Voice Codec (ca26308c) · Commits · e / devices / android_kernel_oneplus_sm7250

drivers/mfd/Kconfig

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		@@ -53,6 +53,10 @@ config MFD_SH_MOBILE_SDHI
		This driver supports the SDHI hardware block found in many
		SuperH Mobile SoCs.

		config MFD_DAVINCI_VOICECODEC
		tristate
		select MFD_CORE

		config MFD_DM355EVM_MSP
		bool "DaVinci DM355 EVM microcontroller"
		depends on I2C && MACH_DAVINCI_DM355_EVM

drivers/mfd/Makefile

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Original line number	Diff line number	Diff line
		@@ -12,6 +12,7 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
		obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
		obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o

		obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
		obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o

		obj-$(CONFIG_MFD_T7L66XB) += t7l66xb.o tmio_core.o

drivers/mfd/davinci_voicecodec.c

0 → 100644

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Original line number	Diff line number	Diff line
		/*
		* DaVinci Voice Codec Core Interface for TI platforms
		*
		* Copyright (C) 2010 Texas Instruments, Inc
		*
		* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#include <linux/init.h>
		#include <linux/module.h>
		#include <linux/device.h>
		#include <linux/delay.h>
		#include <linux/io.h>
		#include <linux/clk.h>

		#include <sound/pcm.h>

		#include <linux/mfd/davinci_voicecodec.h>

		u32 davinci_vc_read(struct davinci_vc *davinci_vc, int reg)
		{
		return __raw_readl(davinci_vc->base + reg);
		}

		void davinci_vc_write(struct davinci_vc *davinci_vc,
		int reg, u32 val)
		{
		__raw_writel(val, davinci_vc->base + reg);
		}

		static int __init davinci_vc_probe(struct platform_device *pdev)
		{
		struct davinci_vc *davinci_vc;
		struct resource res, mem;
		struct mfd_cell *cell = NULL;
		int ret;

		davinci_vc = kzalloc(sizeof(struct davinci_vc), GFP_KERNEL);
		if (!davinci_vc) {
		dev_dbg(&pdev->dev,
		"could not allocate memory for private data\n");
		return -ENOMEM;
		}

		davinci_vc->clk = clk_get(&pdev->dev, NULL);
		if (IS_ERR(davinci_vc->clk)) {
		dev_dbg(&pdev->dev,
		"could not get the clock for voice codec\n");
		ret = -ENODEV;
		goto fail1;
		}
		clk_enable(davinci_vc->clk);

		res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!res) {
		dev_err(&pdev->dev, "no mem resource\n");
		ret = -ENODEV;
		goto fail2;
		}

		davinci_vc->pbase = res->start;
		davinci_vc->base_size = resource_size(res);

		mem = request_mem_region(davinci_vc->pbase, davinci_vc->base_size,
		pdev->name);
		if (!mem) {
		dev_err(&pdev->dev, "VCIF region already claimed\n");
		ret = -EBUSY;
		goto fail2;
		}

		davinci_vc->base = ioremap(davinci_vc->pbase, davinci_vc->base_size);
		if (!davinci_vc->base) {
		dev_err(&pdev->dev, "can't ioremap mem resource.\n");
		ret = -ENOMEM;
		goto fail3;
		}

		res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
		if (!res) {
		dev_err(&pdev->dev, "no DMA resource\n");
		return -ENXIO;
		}

		davinci_vc->davinci_vcif.dma_tx_channel = res->start;
		davinci_vc->davinci_vcif.dma_tx_addr =
		(dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO);

		res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
		if (!res) {
		dev_err(&pdev->dev, "no DMA resource\n");
		return -ENXIO;
		}

		davinci_vc->davinci_vcif.dma_rx_channel = res->start;
		davinci_vc->davinci_vcif.dma_rx_addr =
		(dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_RFIFO);

		davinci_vc->dev = &pdev->dev;
		davinci_vc->pdev = pdev;

		/* Voice codec interface client */
		cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL];
		cell->name = "davinci_vcif";
		cell->driver_data = davinci_vc;

		/* Voice codec CQ93VC client */
		cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL];
		cell->name = "cq93vc";
		cell->driver_data = davinci_vc;

		ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells,
		DAVINCI_VC_CELLS, NULL, 0);
		if (ret != 0) {
		dev_err(&pdev->dev, "fail to register client devices\n");
		goto fail4;
		}

		return 0;

		fail4:
		iounmap(davinci_vc->base);
		fail3:
		release_mem_region(davinci_vc->pbase, davinci_vc->base_size);
		fail2:
		clk_disable(davinci_vc->clk);
		clk_put(davinci_vc->clk);
		davinci_vc->clk = NULL;
		fail1:
		kfree(davinci_vc);

		return ret;
		}

		static int __devexit davinci_vc_remove(struct platform_device *pdev)
		{
		struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);

		mfd_remove_devices(&pdev->dev);

		iounmap(davinci_vc->base);
		release_mem_region(davinci_vc->pbase, davinci_vc->base_size);

		clk_disable(davinci_vc->clk);
		clk_put(davinci_vc->clk);
		davinci_vc->clk = NULL;

		kfree(davinci_vc);

		return 0;
		}

		static struct platform_driver davinci_vc_driver = {
		.driver = {
		.name = "davinci_voicecodec",
		.owner = THIS_MODULE,
		},
		.remove = __devexit_p(davinci_vc_remove),
		};

		static int __init davinci_vc_init(void)
		{
		return platform_driver_probe(&davinci_vc_driver, davinci_vc_probe);
		}
		module_init(davinci_vc_init);

		static void __exit davinci_vc_exit(void)
		{
		platform_driver_unregister(&davinci_vc_driver);
		}
		module_exit(davinci_vc_exit);

		MODULE_AUTHOR("Miguel Aguilar");
		MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface");
		MODULE_LICENSE("GPL");

include/linux/mfd/davinci_voicecodec.h

0 → 100644

+126 −0

Original line number	Diff line number	Diff line
		/*
		* DaVinci Voice Codec Core Interface for TI platforms
		*
		* Copyright (C) 2010 Texas Instruments, Inc
		*
		* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
		*
		* This program is free software; you can redistribute it and/or modify
		* it under the terms of the GNU General Public License as published by
		* the Free Software Foundation; either version 2 of the License, or
		* (at your option) any later version.
		*
		* This program is distributed in the hope that it will be useful,
		* but WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
		* GNU General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
		*/

		#ifndef __LINUX_MFD_DAVINCI_VOICECODEC_H_
		#define __LINUX_MFD_DAVINIC_VOICECODEC_H_

		#include <linux/kernel.h>
		#include <linux/platform_device.h>
		#include <linux/mfd/core.h>

		#include <mach/edma.h>

		/*
		* Register values.
		*/
		#define DAVINCI_VC_PID 0x00
		#define DAVINCI_VC_CTRL 0x04
		#define DAVINCI_VC_INTEN 0x08
		#define DAVINCI_VC_INTSTATUS 0x0c
		#define DAVINCI_VC_INTCLR 0x10
		#define DAVINCI_VC_EMUL_CTRL 0x14
		#define DAVINCI_VC_RFIFO 0x20
		#define DAVINCI_VC_WFIFO 0x24
		#define DAVINCI_VC_FIFOSTAT 0x28
		#define DAVINCI_VC_TST_CTRL 0x2C
		#define DAVINCI_VC_REG05 0x94
		#define DAVINCI_VC_REG09 0xA4
		#define DAVINCI_VC_REG12 0xB0

		/* DAVINCI_VC_CTRL bit fields */
		#define DAVINCI_VC_CTRL_MASK 0x5500
		#define DAVINCI_VC_CTRL_RSTADC BIT(0)
		#define DAVINCI_VC_CTRL_RSTDAC BIT(1)
		#define DAVINCI_VC_CTRL_RD_BITS_8 BIT(4)
		#define DAVINCI_VC_CTRL_RD_UNSIGNED BIT(5)
		#define DAVINCI_VC_CTRL_WD_BITS_8 BIT(6)
		#define DAVINCI_VC_CTRL_WD_UNSIGNED BIT(7)
		#define DAVINCI_VC_CTRL_RFIFOEN BIT(8)
		#define DAVINCI_VC_CTRL_RFIFOCL BIT(9)
		#define DAVINCI_VC_CTRL_RFIFOMD_WORD_1 BIT(10)
		#define DAVINCI_VC_CTRL_WFIFOEN BIT(12)
		#define DAVINCI_VC_CTRL_WFIFOCL BIT(13)
		#define DAVINCI_VC_CTRL_WFIFOMD_WORD_1 BIT(14)

		/* DAVINCI_VC_INT bit fields */
		#define DAVINCI_VC_INT_MASK 0x3F
		#define DAVINCI_VC_INT_RDRDY_MASK BIT(0)
		#define DAVINCI_VC_INT_RERROVF_MASK BIT(1)
		#define DAVINCI_VC_INT_RERRUDR_MASK BIT(2)
		#define DAVINCI_VC_INT_WDREQ_MASK BIT(3)
		#define DAVINCI_VC_INT_WERROVF_MASKBIT BIT(4)
		#define DAVINCI_VC_INT_WERRUDR_MASK BIT(5)

		/* DAVINCI_VC_REG05 bit fields */
		#define DAVINCI_VC_REG05_PGA_GAIN 0x07

		/* DAVINCI_VC_REG09 bit fields */
		#define DAVINCI_VC_REG09_MUTE 0x40
		#define DAVINCI_VC_REG09_DIG_ATTEN 0x3F

		/* DAVINCI_VC_REG12 bit fields */
		#define DAVINCI_VC_REG12_POWER_ALL_ON 0xFD
		#define DAVINCI_VC_REG12_POWER_ALL_OFF 0x00

		#define DAVINCI_VC_CELLS 2

		enum davinci_vc_cells {
		DAVINCI_VC_VCIF_CELL,
		DAVINCI_VC_CQ93VC_CELL,
		};

		struct davinci_vcif {
		struct platform_device *pdev;
		u32 dma_tx_channel;
		u32 dma_rx_channel;
		dma_addr_t dma_tx_addr;
		dma_addr_t dma_rx_addr;
		};

		struct cq93vc {
		struct platform_device *pdev;
		struct snd_soc_codec *codec;
		u32 sysclk;
		};

		struct davinci_vc;

		struct davinci_vc {
		/* Device data */
		struct device *dev;
		struct platform_device *pdev;
		struct clk *clk;

		/* Memory resources */
		void __iomem *base;
		resource_size_t pbase;
		size_t base_size;

		/* MFD cells */
		struct mfd_cell cells[DAVINCI_VC_CELLS];

		/* Client devices */
		struct davinci_vcif davinci_vcif;
		struct cq93vc cq93vc;
		};

		#endif