Re: [PATCH v4 01/11] mfd: add pruss mfd driver.

From: Marc Kleine-Budde
Date: Fri Apr 22 2011 - 12:00:26 EST

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In reply to: Subhasish Ghosh: "[PATCH v4 01/11] mfd: add pruss mfd driver."
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On 04/22/2011 02:08 PM, Subhasish Ghosh wrote:
> This patch adds the pruss MFD driver and associated include files.
> For details regarding the PRUSS please refer the folowing link:
> http://processors.wiki.ti.com/index.php/Programmable_Realtime_Unit_Subsystem
>
> The rational behind the MFD driver being the fact that multiple devices can
> be implemented on the cores independently. This is determined by the nature
> of the program which is loaded into the PRU's instruction memory.
> A device may be de-initialized and another loaded or two different devices
> can be run simultaneously on the two cores.
> It's also possible, as in our case, to implement a single device on both
> the PRU's resulting in improved load sharing.
>
> Signed-off-by: Subhasish Ghosh <subhasish@xxxxxxxxxxxxxxxxxxxx>
> ---
> drivers/mfd/Kconfig | 10 +
> drivers/mfd/Makefile | 1 +
> drivers/mfd/pruss.c | 513 ++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/pruss.h | 130 ++++++++++
> include/linux/mfd/pruss_core.h | 128 ++++++++++
> 5 files changed, 782 insertions(+), 0 deletions(-)
> create mode 100644 drivers/mfd/pruss.c
> create mode 100644 include/linux/mfd/pruss.h
> create mode 100644 include/linux/mfd/pruss_core.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index 0284c53..41479e4 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -92,6 +92,16 @@ config MFD_TI_SSP
> To compile this driver as a module, choose M here: the
> module will be called ti-ssp.
>
> +config MFD_DA8XX_PRUSS
> + tristate "Texas Instruments DA8XX PRUSS support"
> + depends on ARCH_DAVINCI_DA850
> + select MFD_CORE
> + help
> + This driver provides support API for the programmable
> + realtime unit (PRU) present on TI's da8xx processors. It
> + provides basic read, write, config, enable, disable
> + routines to facilitate devices emulated on it.
> +
> config HTC_EGPIO
> bool "HTC EGPIO support"
> depends on GENERIC_HARDIRQS && GPIOLIB && ARM
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index c56b6c7..8015dea 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -13,6 +13,7 @@ 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_DA8XX_PRUSS) += pruss.o
> obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
> obj-$(CONFIG_MFD_TI_SSP) += ti-ssp.o
>
> diff --git a/drivers/mfd/pruss.c b/drivers/mfd/pruss.c
> new file mode 100644
> index 0000000..6836d5a
> --- /dev/null
> +++ b/drivers/mfd/pruss.c
> @@ -0,0 +1,513 @@
> +/*
> + * Copyright (C) 2010, 2011 Texas Instruments Incorporated
> + *
> + * 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 version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
> + * whether express or implied; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + */
> +
> +#include <linux/init.h>
> +#include <linux/kernel.h>
> +#include <linux/types.h>
> +#include <linux/module.h>
> +#include <linux/bitops.h>
> +#include <linux/interrupt.h>
> +#include <linux/spinlock.h>
> +#include <linux/errno.h>
> +#include <linux/platform_device.h>
> +#include <linux/clk.h>
> +#include <linux/mfd/pruss.h>
> +#include <linux/mfd/core.h>
> +#include <linux/io.h>
> +#include <linux/slab.h>
> +#include <linux/err.h>
> +
> +struct pruss_priv {
> + struct device *dev;
> + spinlock_t lock;
> + struct resource *res;
> + struct clk *clk;
> + void __iomem *ioaddr;
> +};
> +
> +s32 pruss_disable(struct device *dev, u8 pruss_num)
make it a int function
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + struct prusscore_regs __iomem *h_pruss;
> + struct pruss_map __iomem *pruss_mmap = pruss->ioaddr;
> + u32 temp_reg;
> +
> + if ((pruss_num != PRUCORE_0) && (pruss_num != PRUCORE_1))
> + return -EINVAL;
> +
> + spin_lock(&pruss->lock);
> +
> + /* pruss deinit */
> + iowrite32(0xFFFFFFFF, &pruss_mmap->intc.statclrint[pruss_num]);
> +
> + /* Disable PRU */
> + h_pruss = &pruss_mmap->core[pruss_num];
> + temp_reg = ioread32(&h_pruss->control);
> + temp_reg = (temp_reg &
> + ~PRUCORE_CONTROL_COUNTENABLE_MASK) |
> + ((PRUCORE_CONTROL_COUNTENABLE_DISABLE <<
> + PRUCORE_CONTROL_COUNTENABLE_SHIFT) &
> + PRUCORE_CONTROL_COUNTENABLE_MASK);
> + iowrite32(temp_reg, &h_pruss->control);
> +
> + temp_reg = ioread32(&h_pruss->control);
> + temp_reg = (temp_reg &
> + ~PRUCORE_CONTROL_ENABLE_MASK) |
> + ((PRUCORE_CONTROL_ENABLE_DISABLE <<
> + PRUCORE_CONTROL_ENABLE_SHIFT) &
> + PRUCORE_CONTROL_ENABLE_MASK);
> + iowrite32(temp_reg, &h_pruss->control);
> +
> + /* Reset PRU */
> + iowrite32(PRUCORE_CONTROL_RESETVAL,
> + &h_pruss->control);
> + spin_unlock(&pruss->lock);
> +
> + return 0;

make it a void function?
> +}
> +EXPORT_SYMBOL_GPL(pruss_disable);
> +
> +s32 pruss_enable(struct device *dev, u8 pruss_num)
int?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + struct prusscore_regs __iomem *h_pruss;
> + struct pruss_map __iomem *pruss_mmap = pruss->ioaddr;
> + u32 i;
> +
> + if ((pruss_num != PRUCORE_0) && (pruss_num != PRUCORE_1))
> + return -EINVAL;
> +
> + h_pruss = &pruss_mmap->core[pruss_num];
> +
> + /* Reset PRU */
> + spin_lock(&pruss->lock);
> + iowrite32(PRUCORE_CONTROL_RESETVAL, &h_pruss->control);

no need to lock the ram reset below?

> + spin_unlock(&pruss->lock);
> +
> + /* Reset any garbage in the ram */
> + if (pruss_num == PRUCORE_0)
> + for (i = 0; i < PRUSS_PRU0_RAM_SZ; i++)
> + iowrite32(0x0, &pruss_mmap->dram0[i]);
> + else if (pruss_num == PRUCORE_1)
> + for (i = 0; i < PRUSS_PRU1_RAM_SZ; i++)
> + iowrite32(0x0, &pruss_mmap->dram1[i]);

if you make a array for these

+struct pruss_map {
+ u8 dram0[512];
+ u8 res1[7680];

+ u8 dram1[512];
+ u8 res2[7680];
..}

you don't need the if..else..

> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_enable);
> +
> +/* Load the specified PRU with code */
> +s32 pruss_load(struct device *dev, u8 pruss_num,
> + u32 *pruss_code, u32 code_size_in_words)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + struct pruss_map __iomem *pruss_mmap = pruss->ioaddr;
> + u32 __iomem *pruss_iram;
> + u32 i;
> +
> + if (pruss_num == PRUCORE_0)
> + pruss_iram = (u32 __iomem *)&pruss_mmap->iram0;
> + else if (pruss_num == PRUCORE_1)
> + pruss_iram = (u32 __iomem *)&pruss_mmap->iram1;
> + else

same here
> + return -EINVAL;
> +
> + pruss_enable(dev, pruss_num);
> +
> + spin_lock(&pruss->lock);
> + /* Copy dMAX code to its instruction RAM */
> + for (i = 0; i < code_size_in_words; i++)
> + iowrite32(pruss_code[i], (pruss_iram + i));
> +
> + spin_unlock(&pruss->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_load);
> +
> +s32 pruss_run(struct device *dev, u8 pruss_num)
int?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + struct prusscore_regs __iomem *h_pruss;
> + struct pruss_map __iomem *pruss_mmap = pruss->ioaddr;
> + u32 temp_reg;
> +
> + if ((pruss_num != PRUCORE_0) && (pruss_num != PRUCORE_1))
> + return -EINVAL;
> +
> + h_pruss = &pruss_mmap->core[pruss_num];
> +
> + /* Enable dMAX, let it execute the code we just copied */
> + spin_lock(&pruss->lock);
> + temp_reg = ioread32(&h_pruss->control);
> + temp_reg = (temp_reg &
> + ~PRUCORE_CONTROL_COUNTENABLE_MASK) |
> + ((PRUCORE_CONTROL_COUNTENABLE_ENABLE <<
> + PRUCORE_CONTROL_COUNTENABLE_SHIFT) &
> + PRUCORE_CONTROL_COUNTENABLE_MASK);
> + iowrite32(temp_reg, &h_pruss->control);
> +
> + temp_reg = ioread32(&h_pruss->control);
> + temp_reg = (temp_reg &
> + ~PRUCORE_CONTROL_ENABLE_MASK) |
> + ((PRUCORE_CONTROL_ENABLE_ENABLE <<
> + PRUCORE_CONTROL_ENABLE_SHIFT) &
> + PRUCORE_CONTROL_ENABLE_MASK);
> + iowrite32(temp_reg, &h_pruss->control);
> + spin_unlock(&pruss->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_run);
> +
> +s32 pruss_wait_for_halt(struct device *dev, u8 pruss_num, u32 timeout)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + struct prusscore_regs __iomem *h_pruss;
> + struct pruss_map __iomem *pruss_mmap = pruss->ioaddr;
> + u32 temp_reg;
> + u32 cnt = timeout;
> +
> + if ((pruss_num != PRUCORE_0) && (pruss_num != PRUCORE_1))
> + return -EINVAL;
> +
> + h_pruss = &pruss_mmap->core[pruss_num];
> +
> + while (cnt--) {
> + temp_reg = ioread32(&h_pruss->control);
> + if (((temp_reg & PRUCORE_CONTROL_RUNSTATE_MASK) >>
> + PRUCORE_CONTROL_RUNSTATE_SHIFT) ==
> + PRUCORE_CONTROL_RUNSTATE_HALT)
> + break;

how long might this take? what about some delay, sleep, or reschedule?

> + }
> + if (!cnt)
> + return -EBUSY;
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_wait_for_halt);
> +
> +s32 pruss_writeb(struct device *dev, u32 offset, u8 pdatatowrite)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstowrite;

we usually don't use "p" variable names for pointers

> +
> + paddresstowrite = pruss->ioaddr + offset;
> + iowrite8(pdatatowrite, paddresstowrite);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_writeb);
> +
> +s32 pruss_rmwb(struct device *dev, u32 offset, u8 mask, u8 val)
void function?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddress;
> + u32 preg_data;
> +
> + paddress = pruss->ioaddr + offset;
> +
> + spin_lock(&pruss->lock);
> + preg_data = ioread8(paddress);
> + preg_data &= ~mask;
> + preg_data |= val;
> + iowrite8(preg_data, paddress);
> + spin_unlock(&pruss->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_rmwb);
> +
> +s32 pruss_readb(struct device *dev, u32 offset, u8 *pdatatoread)
void?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstoread;
> +
> + paddresstoread = pruss->ioaddr + offset ;
> + *pdatatoread = ioread8(paddresstoread);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_readb);
> +
> +s32 pruss_readb_multi(struct device *dev, u32 offset,
> + u8 *pdatatoread, u16 bytestoread)
viod?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + u8 __iomem *paddresstoread;
> + u16 i;
int?
> +
> + paddresstoread = pruss->ioaddr + offset;
> +
> + for (i = 0; i < bytestoread; i++)
> + *pdatatoread++ = ioread8(paddresstoread++);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_readb_multi);
> +
> +s32 pruss_writel(struct device *dev, u32 offset,
> + u32 pdatatowrite)
void?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstowrite;
> +
> + paddresstowrite = pruss->ioaddr + offset;
> + iowrite32(pdatatowrite, paddresstowrite);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_writel);
> +
> +s32 pruss_writel_multi(struct device *dev, u32 offset,
> + u32 *pdatatowrite, u16 wordstowrite)
void?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + u32 __iomem *paddresstowrite;
> + u16 i;
> +
> + paddresstowrite = pruss->ioaddr + offset;
> +
> + for (i = 0; i < wordstowrite; i++)
> + iowrite32(*pdatatowrite++, paddresstowrite++);
memcopy_to_iomem?
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_writel_multi);
> +
> +s32 pruss_rmwl(struct device *dev, u32 offset, u32 mask, u32 val)
void?
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddress;
> + u32 preg_data;
> +
> + paddress = pruss->ioaddr + offset;
> +
> + spin_lock(&pruss->lock);
> + preg_data = ioread32(paddress);
> + preg_data &= ~mask;
> + preg_data |= val;
> + iowrite32(preg_data, paddress);
> + spin_unlock(&pruss->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_rmwl);
> +
> +s32 pruss_readl(struct device *dev, u32 offset, u32 *pdatatoread)
void? or return the read value
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstoread;
> +
> + paddresstoread = pruss->ioaddr + offset;
> + *pdatatoread = ioread32(paddresstoread);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_readl);
> +
> +s32 pruss_readl_multi(struct device *dev, u32 offset,
> + u32 *pdatatoread, u16 wordstoread)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + u32 __iomem *paddresstoread;
> + u16 i;
> +
> + paddresstoread = pruss->ioaddr + offset;
> + for (i = 0; i < wordstoread; i++)
> + *pdatatoread++ = ioread32(paddresstoread++);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_readl_multi);
> +
> +s32 pruss_writew(struct device *dev, u32 offset, u16 pdatatowrite)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstowrite;
> +
> + paddresstowrite = pruss->ioaddr + offset;
> + iowrite16(pdatatowrite, paddresstowrite);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_writew);
> +
> +s32 pruss_rmww(struct device *dev, u32 offset, u16 mask, u16 val)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddress;
> + u32 preg_data;
> +
> + paddress = pruss->ioaddr + offset;
> +
> + spin_lock(&pruss->lock);
> + preg_data = ioread16(paddress);
> + preg_data &= ~mask;
> + preg_data |= val;
> + iowrite16(preg_data, paddress);
> + spin_unlock(&pruss->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_rmww);
> +
> +s32 pruss_readw(struct device *dev, u32 offset, u16 *pdatatoread)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstoread;
> +
> + paddresstoread = pruss->ioaddr + offset;
> + *pdatatoread = ioread16(paddresstoread);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_readw);
> +
> +s32 pruss_idx_writel(struct device *dev, u32 offset, u32 value)
> +{
> + struct pruss_priv *pruss = dev_get_drvdata(dev->parent);
> + void __iomem *paddresstowrite;
> +
> + paddresstowrite = pruss->ioaddr + offset;
> + iowrite32(value, paddresstowrite);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL_GPL(pruss_idx_writel);
> +
> +static int pruss_mfd_add_devices(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct mfd_cell *cell = pdev->dev.platform_data;
> + s32 err, i, num_devices = 0;
> +
> + for (i = 0; cell[i].name; i++) {
> + err = mfd_add_devices(dev, 0, &cell[i], 1, NULL, 0);
> + if (err) {
> + dev_err(dev, "cannot add mfd cell: %s\n",
> + cell[i].name);
> + continue;
> + }
> + num_devices++;
> + dev_info(dev, "mfd: added %s device\n", cell[i].name);
> + }
> +
> + return num_devices;
> +}
> +
> +static int __devinit pruss_probe(struct platform_device *pdev)
> +{
> + struct pruss_priv *pruss_dev = NULL;
> + s32 err;
> +
> + pruss_dev = kzalloc(sizeof(struct pruss_priv), GFP_KERNEL);
> + if (!pruss_dev)
> + return -ENOMEM;
> +
> + pruss_dev->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!pruss_dev->res) {
> + dev_err(&pdev->dev,
> + "unable to get pruss memory resources!\n");
> + err = -ENODEV;
> + goto probe_exit_kfree;
> + }
> +
> + if (!request_mem_region(pruss_dev->res->start,
> + resource_size(pruss_dev->res), dev_name(&pdev->dev))) {
> + dev_err(&pdev->dev, "pruss memory region already claimed!\n");
> + err = -EBUSY;
> + goto probe_exit_kfree;
> + }
> +
> + pruss_dev->ioaddr = ioremap(pruss_dev->res->start,
> + resource_size(pruss_dev->res));
> + if (!pruss_dev->ioaddr) {
> + dev_err(&pdev->dev, "ioremap failed\n");
> + err = -ENOMEM;
> + goto probe_exit_free_region;
> + }
> +
> + pruss_dev->clk = clk_get(NULL, "pruss");
> + if (IS_ERR(pruss_dev->clk)) {
> + dev_err(&pdev->dev, "no clock available: pruss\n");
> + err = -ENODEV;
> + pruss_dev->clk = NULL;
> + goto probe_exit_iounmap;
> + }
> + spin_lock_init(&pruss_dev->lock);
> +
> + clk_enable(pruss_dev->clk);
> +
> + err = pruss_mfd_add_devices(pdev);
> + if (!err)
> + goto probe_exit_clock;
> +
> + platform_set_drvdata(pdev, pruss_dev);
> + pruss_dev->dev = &pdev->dev;
> + return 0;
> +
> +probe_exit_clock:
> + clk_put(pruss_dev->clk);
> + clk_disable(pruss_dev->clk);
> +probe_exit_iounmap:
> + iounmap(pruss_dev->ioaddr);
> +probe_exit_free_region:
> + release_mem_region(pruss_dev->res->start,
> + resource_size(pruss_dev->res));
> +probe_exit_kfree:
> + kfree(pruss_dev);
> + return err;
> +}
> +
> +static int __devexit pruss_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct pruss_priv *pruss = dev_get_drvdata(dev);
> +
> + mfd_remove_devices(dev);
> + pruss_disable(dev, PRUCORE_0);
> + pruss_disable(dev, PRUCORE_1);
> + clk_disable(pruss->clk);
> + clk_put(pruss->clk);
> + iounmap(pruss->ioaddr);
> + release_mem_region(pruss->res->start, resource_size(pruss->res));
> + kfree(pruss);
> + dev_set_drvdata(dev, NULL);
> + return 0;
> +}
> +
> +static struct platform_driver pruss_driver = {
> + .probe = pruss_probe,
> + .remove = __devexit_p(pruss_remove),
> + .driver = {
> + .name = "pruss_mfd",
> + .owner = THIS_MODULE,
> + }
> +};
> +
> +static int __init pruss_init(void)
> +{
> + return platform_driver_register(&pruss_driver);
> +}
> +module_init(pruss_init);
> +
> +static void __exit pruss_exit(void)
> +{
> + platform_driver_unregister(&pruss_driver);
> +}
> +module_exit(pruss_exit);
> +
> +MODULE_DESCRIPTION("Programmable Realtime Unit (PRU) Driver");
> +MODULE_AUTHOR("Subhasish Ghosh");
> +MODULE_LICENSE("GPL");
> diff --git a/include/linux/mfd/pruss.h b/include/linux/mfd/pruss.h
> new file mode 100644
> index 0000000..8ef25b3
> --- /dev/null
> +++ b/include/linux/mfd/pruss.h
> @@ -0,0 +1,130 @@
> +/*
> + * Copyright (C) 2010, 2011 Texas Instruments Incorporated
> + * Author: Jitendra Kumar <jitendra@xxxxxxxxxxxxxxxxxxxx>
> + *
> + * 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 version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
> + * whether express or implied; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + */
> +
> +#ifndef _PRUSS_H_
> +#define _PRUSS_H_
> +
> +#include <linux/types.h>
> +#include <linux/platform_device.h>
> +#include "pruss_core.h"
> +
> +#define PRUSS_NUM0 PRUCORE_0
> +#define PRUSS_NUM1 PRUCORE_1
> +
> +#define PRUSS_PRU0_RAM_SZ 512
> +#define PRUSS_PRU1_RAM_SZ 512
> +#define PRUSS_PRU0_BASE_ADDRESS 0
> +#define PRUSS_PRU1_BASE_ADDRESS 0x2000
> +#define PRUSS_INTC_BASE_ADDRESS (PRUSS_PRU0_BASE_ADDRESS + 0x4000)
> +#define PRUSS_INTC_GLBLEN (PRUSS_INTC_BASE_ADDRESS + 0x10)
> +#define PRUSS_INTC_GLBLNSTLVL (PRUSS_INTC_BASE_ADDRESS + 0x1C)
> +#define PRUSS_INTC_STATIDXSET (PRUSS_INTC_BASE_ADDRESS + 0x20)
> +#define PRUSS_INTC_STATIDXCLR (PRUSS_INTC_BASE_ADDRESS + 0x24)
> +#define PRUSS_INTC_ENIDXSET (PRUSS_INTC_BASE_ADDRESS + 0x28)
> +#define PRUSS_INTC_ENIDXCLR (PRUSS_INTC_BASE_ADDRESS + 0x2C)
> +#define PRUSS_INTC_HSTINTENIDXSET (PRUSS_INTC_BASE_ADDRESS + 0x34)
> +#define PRUSS_INTC_HSTINTENIDXCLR (PRUSS_INTC_BASE_ADDRESS + 0x38)
> +#define PRUSS_INTC_GLBLPRIIDX (PRUSS_INTC_BASE_ADDRESS + 0x80)
> +#define PRUSS_INTC_STATSETINT0 (PRUSS_INTC_BASE_ADDRESS + 0x200)
> +#define PRUSS_INTC_STATSETINT1 (PRUSS_INTC_BASE_ADDRESS + 0x204)
> +#define PRUSS_INTC_STATCLRINT0 (PRUSS_INTC_BASE_ADDRESS + 0x280)
> +#define PRUSS_INTC_STATCLRINT1 (PRUSS_INTC_BASE_ADDRESS + 0x284)
> +#define PRUSS_INTC_ENABLESET0 (PRUSS_INTC_BASE_ADDRESS + 0x300)
> +#define PRUSS_INTC_ENABLESET1 (PRUSS_INTC_BASE_ADDRESS + 0x304)
> +#define PRUSS_INTC_ENABLECLR0 (PRUSS_INTC_BASE_ADDRESS + 0x380)
> +#define PRUSS_INTC_ENABLECLR1 (PRUSS_INTC_BASE_ADDRESS + 0x384)
> +#define PRUSS_INTC_CHANMAP0 (PRUSS_INTC_BASE_ADDRESS + 0x400)
> +#define PRUSS_INTC_CHANMAP1 (PRUSS_INTC_BASE_ADDRESS + 0x404)
> +#define PRUSS_INTC_CHANMAP2 (PRUSS_INTC_BASE_ADDRESS + 0x408)
> +#define PRUSS_INTC_CHANMAP3 (PRUSS_INTC_BASE_ADDRESS + 0x40C)
> +#define PRUSS_INTC_CHANMAP4 (PRUSS_INTC_BASE_ADDRESS + 0x410)
> +#define PRUSS_INTC_CHANMAP5 (PRUSS_INTC_BASE_ADDRESS + 0x414)
> +#define PRUSS_INTC_CHANMAP6 (PRUSS_INTC_BASE_ADDRESS + 0x418)
> +#define PRUSS_INTC_CHANMAP7 (PRUSS_INTC_BASE_ADDRESS + 0x41C)
> +#define PRUSS_INTC_CHANMAP8 (PRUSS_INTC_BASE_ADDRESS + 0x420)
> +#define PRUSS_INTC_CHANMAP9 (PRUSS_INTC_BASE_ADDRESS + 0x424)
> +#define PRUSS_INTC_CHANMAP10 (PRUSS_INTC_BASE_ADDRESS + 0x428)
> +#define PRUSS_INTC_CHANMAP11 (PRUSS_INTC_BASE_ADDRESS + 0x42C)
> +#define PRUSS_INTC_CHANMAP12 (PRUSS_INTC_BASE_ADDRESS + 0x430)
> +#define PRUSS_INTC_CHANMAP13 (PRUSS_INTC_BASE_ADDRESS + 0x434)
> +#define PRUSS_INTC_CHANMAP14 (PRUSS_INTC_BASE_ADDRESS + 0x438)
> +#define PRUSS_INTC_CHANMAP15 (PRUSS_INTC_BASE_ADDRESS + 0x43C)
> +#define PRUSS_INTC_HOSTMAP0 (PRUSS_INTC_BASE_ADDRESS + 0x800)
> +#define PRUSS_INTC_HOSTMAP1 (PRUSS_INTC_BASE_ADDRESS + 0x804)
> +#define PRUSS_INTC_HOSTMAP2 (PRUSS_INTC_BASE_ADDRESS + 0x808)
> +#define PRUSS_INTC_POLARITY0 (PRUSS_INTC_BASE_ADDRESS + 0xD00)
> +#define PRUSS_INTC_POLARITY1 (PRUSS_INTC_BASE_ADDRESS + 0xD04)
> +#define PRUSS_INTC_TYPE0 (PRUSS_INTC_BASE_ADDRESS + 0xD80)
> +#define PRUSS_INTC_TYPE1 (PRUSS_INTC_BASE_ADDRESS + 0xD84)
> +#define PRUSS_INTC_HOSTINTEN (PRUSS_INTC_BASE_ADDRESS + 0x1500)
> +#define PRUSS_INTC_HOSTINTLVL_MAX 9
> +
> +#define PRU_INTC_HOSTMAP0_CHAN (0x03020100)
> +#define PRU_INTC_HOSTMAP1_CHAN (0x07060504)
> +#define PRU_INTC_HOSTMAP2_CHAN (0x00000908)
> +
> +#define PRU_INTC_CHANMAP7_SYS_EVT31 (0x00000000)
> +#define PRU_INTC_CHANMAP8_FULL (0x02020100)
> +#define PRU_INTC_CHANMAP9_FULL (0x04040303)
> +#define PRU_INTC_CHANMAP10_FULL (0x06060505)
> +#define PRU_INTC_CHANMAP11_FULL (0x08080707)
> +#define PRU_INTC_CHANMAP12_FULL (0x00010909)
> +#define PRU_INTC_CHANMAP8_HALF (0x03020100)
> +#define PRU_INTC_CHANMAP9_HALF (0x07060504)
> +#define PRU_INTC_CHANMAP10_HALF (0x03020908)
> +#define PRU_INTC_CHANMAP11_HALF (0x07060504)
> +#define PRU_INTC_CHANMAP12_HALF (0x00010908)
> +#define PRU_INTC_REGMAP_MASK (0xFFFFFFFF)
> +
> +s32 pruss_enable(struct device *dev, u8 pruss_num);
> +
> +s32 pruss_load(struct device *dev, u8 pruss_num,
> + u32 *pruss_code, u32 code_size_in_words);
> +
> +s32 pruss_run(struct device *dev, u8 pruss_num);
> +
> +s32 pruss_wait_for_halt(struct device *dev, u8 pruss_num, u32 timeout);
> +
> +s32 pruss_disable(struct device *dev, u8 pruss_num);
> +
> +s32 pruss_writeb(struct device *dev, u32 offset, u8 pdatatowrite);
> +
> +s32 pruss_rmwb(struct device *dev, u32 offset, u8 mask, u8 val);
> +
> +s32 pruss_readb(struct device *dev, u32 offset, u8 *pdatatoread);
> +
> +s32 pruss_readb_multi(struct device *dev, u32 offset,
> + u8 *pdatatoread, u16 bytestoread);
> +
> +s32 pruss_readl(struct device *dev, u32 offset, u32 *pdatatoread);
> +
> +s32 pruss_readl_multi(struct device *dev, u32 offset,
> + u32 *pdatatoread, u16 wordstoread);
> +
> +s32 pruss_writel(struct device *dev, u32 offset, u32 pdatatowrite);
> +
> +s32 pruss_writel_multi(struct device *dev, u32 offset,
> + u32 *pdatatowrite, u16 wordstowrite);
> +
> +s32 pruss_rmwl(struct device *dev, u32 offset, u32 mask, u32 val);
> +
> +s32 pruss_idx_writel(struct device *dev, u32 offset, u32 value);
> +
> +s32 pruss_writew(struct device *dev, u32 offset, u16 datatowrite);
> +
> +s32 pruss_rmww(struct device *dev, u32 offset, u16 mask, u16 val);
> +
> +s32 pruss_readw(struct device *dev, u32 offset, u16 *pdatatoread);
> +
> +#endif /* End _PRUSS_H_ */
> diff --git a/include/linux/mfd/pruss_core.h b/include/linux/mfd/pruss_core.h
> new file mode 100644
> index 0000000..48e2b99
> --- /dev/null
> +++ b/include/linux/mfd/pruss_core.h
> @@ -0,0 +1,128 @@
> +/*
> + * Copyright (C) 2010, 2011 Texas Instruments Incorporated
> + * Author: Jitendra Kumar <jitendra@xxxxxxxxxxxxxxxxxxxx>
> + *
> + * 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 version 2.
> + *
> + * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind,
> + * whether express or implied; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
> + * General Public License for more details.
> + */
> +
> +#ifndef _PRUSS_CORE_H_
> +#define _PRUSS_CORE_H_
> +
> +#include <linux/types.h>
> +
> +#define PRUCORE_0 (0)
> +#define PRUCORE_1 (1)
> +
> +#define PRUCORE_CONTROL_PCRESETVAL_MASK (0xFFFF0000u)
> +#define PRUCORE_CONTROL_PCRESETVAL_SHIFT (0x00000010u)
> +#define PRUCORE_CONTROL_PCRESETVAL_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_RUNSTATE_MASK (0x00008000u)
> +#define PRUCORE_CONTROL_RUNSTATE_SHIFT (0x0000000Fu)
> +#define PRUCORE_CONTROL_RUNSTATE_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_RUNSTATE_HALT (0x00000000u)
> +#define PRUCORE_CONTROL_RUNSTATE_RUN (0x00000001u)
> +#define PRUCORE_CONTROL_SINGLESTEP_MASK (0x00000100u)
> +#define PRUCORE_CONTROL_SINGLESTEP_SHIFT (0x00000008u)
> +#define PRUCORE_CONTROL_SINGLESTEP_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_SINGLESTEP_FREERUN (0x00000000u)
> +#define PRUCORE_CONTROL_SINGLESTEP_SINGLE (0x00000001u)
> +#define PRUCORE_CONTROL_COUNTENABLE_MASK (0x00000008u)
> +#define PRUCORE_CONTROL_COUNTENABLE_SHIFT (0x00000003u)
> +#define PRUCORE_CONTROL_COUNTENABLE_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_COUNTENABLE_DISABLE (0x00000000u)
> +#define PRUCORE_CONTROL_COUNTENABLE_ENABLE (0x00000001u)
> +#define PRUCORE_CONTROL_SLEEPING_MASK (0x00000004u)
> +#define PRUCORE_CONTROL_SLEEPING_SHIFT (0x00000002u)
> +#define PRUCORE_CONTROL_SLEEPING_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_SLEEPING_NOTASLEEP (0x00000000u)
> +#define PRUCORE_CONTROL_SLEEPING_ASLEEP (0x00000001u)
> +#define PRUCORE_CONTROL_ENABLE_MASK (0x00000002u)
> +#define PRUCORE_CONTROL_ENABLE_SHIFT (0x00000001u)
> +#define PRUCORE_CONTROL_ENABLE_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_ENABLE_DISABLE (0x00000000u)
> +#define PRUCORE_CONTROL_ENABLE_ENABLE (0x00000001u)
> +#define PRUCORE_CONTROL_SOFTRESET_MASK (0x00000001u)
> +#define PRUCORE_CONTROL_SOFTRESET_SHIFT (0x00000000u)
> +#define PRUCORE_CONTROL_SOFTRESET_RESETVAL (0x00000000u)
> +#define PRUCORE_CONTROL_SOFTRESET_RESET (0x00000000u)
> +#define PRUCORE_CONTROL_SOFTRESET_OUT_OF_RESET (0x00000001u)
> +#define PRUCORE_CONTROL_RESETVAL (0x00000000u)
> +
> +struct prusscore_regs {
> + u32 control;
> + u32 status;
> + u32 wakeup;
> + u32 cyclecnt;
> + u32 stallcnt;
> + u8 rsvd0[12];
> + u32 contabblkidx0;
> + u32 contabblkidx1;
> + u32 contabproptr0;
> + u32 contabproptr1;
> + u8 rsvd1[976];
> + u32 intgpr[32];
> + u32 intcter[32];
> + u8 rsvd2[768];
> +};
> +
> +struct pruss_intc_regs {
> + u32 revid;
> + u32 control;
> + u8 res1[8];
> + u32 glblen;
> + u8 res2[8];
> + u32 glblnstlvl;
> + u32 statidxset;
> + u32 statidxclr;
> + u32 enidxset;
> + u32 enidxclr;
> + u8 res3[4];
> + u32 hostintenidxset;
> + u32 hostintenidxclr;
> + u8 res4[68];
> + u32 glblpriidx;
> + u8 res5[380];
> + u32 statsetint[2];
> + u8 res6[120];
> + u32 statclrint[2];
> + u8 res7[120];
> + u32 enableset[2];
> + u8 res8[120];
> + u32 enableclr[2];
> + u8 res9[120];
> + u32 chanmap[16];
> + u8 res10[960];
> + u32 hostmap[2];
> + u8 res11[248];
> + u32 hostintpriidx[10];
> + u8 res12[984];
> + u32 polarity[2];
> + u8 res13[120];
> + u32 type[2];
> + u8 res14[888];
> + u32 hostintnstlvl[10];
> + u8 res15[984];
> + u32 hostinten;
> + u8 res16[6907];
> +};
> +
> +struct pruss_map {
> + u8 dram0[512];
> + u8 res1[7680];
> + u8 dram1[512];
> + u8 res2[7680];
> + struct pruss_intc_regs intc;
> + struct prusscore_regs core[2];
> + u8 iram0[4096];
> + u8 res3[12288];
> + u8 iram1[4096];
> + u8 res4[12288];
> +};
> +#endif

regards, Marc

--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |

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