[PATCH v5 01/12] misc: add driver for sequencer serial port
Grant Likely
grant.likely at secretlab.ca
Tue Nov 16 02:10:47 EST 2010
On Mon, Nov 15, 2010 at 02:12:03PM -0500, Cyril Chemparathy wrote:
> TI's sequencer serial port (TI-SSP) is a jack-of-all-trades type of serial port
> device. It has a built-in programmable execution engine that can be programmed
> to operate as almost any serial bus (I2C, SPI, EasyScale, and others).
>
> This patch adds a driver for this controller device. The driver does not
> expose a user-land interface. Protocol drivers built on top of this layer are
> expected to remain in-kernel.
>
> Signed-off-by: Cyril Chemparathy <cyril at ti.com>
> ---
> drivers/mfd/Kconfig | 11 +
> drivers/mfd/Makefile | 1 +
> drivers/mfd/ti-ssp.c | 475 ++++++++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/ti_ssp.h | 87 ++++++++
> 4 files changed, 574 insertions(+), 0 deletions(-)
> create mode 100644 drivers/mfd/ti-ssp.c
> create mode 100644 include/linux/mfd/ti_ssp.h
>
> diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
> index db51ea1..6bedf53 100644
> --- a/drivers/mfd/Kconfig
> +++ b/drivers/mfd/Kconfig
> @@ -81,6 +81,17 @@ config MFD_DM355EVM_MSP
> boards. MSP430 firmware manages resets and power sequencing,
> inputs from buttons and the IR remote, LEDs, an RTC, and more.
>
> +config MFD_TI_SSP
> + tristate "TI Sequencer Serial Port support"
> + depends on ARCH_DAVINCI_TNETV107X
> + select MFD_CORE
> + ---help---
> + Say Y here if you want support for the Sequencer Serial Port
> + in a Texas Instruments TNETV107X SoC.
> +
> + To compile this driver as a module, choose M here: the
> + module will be called ti-ssp.
> +
> config HTC_EGPIO
> bool "HTC EGPIO support"
> depends on GENERIC_HARDIRQS && GPIOLIB && ARM
> diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
> index feaeeae..098a932 100644
> --- a/drivers/mfd/Makefile
> +++ b/drivers/mfd/Makefile
> @@ -14,6 +14,7 @@ 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_TI_SSP) += ti-ssp.o
>
> obj-$(CONFIG_MFD_STMPE) += stmpe.o
> obj-$(CONFIG_MFD_TC35892) += tc35892.o
> diff --git a/drivers/mfd/ti-ssp.c b/drivers/mfd/ti-ssp.c
> new file mode 100644
> index 0000000..ac3171a
> --- /dev/null
> +++ b/drivers/mfd/ti-ssp.c
> @@ -0,0 +1,475 @@
> +/*
> + * Sequencer Serial Port (SSP) driver for Texas Instruments' SoCs
> + *
> + * Copyright (C) 2010 Texas Instruments Inc
> + *
> + * 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/errno.h>
> +#include <linux/kernel.h>
> +#include <linux/module.h>
> +#include <linux/slab.h>
> +#include <linux/err.h>
> +#include <linux/init.h>
> +#include <linux/wait.h>
> +#include <linux/clk.h>
> +#include <linux/interrupt.h>
> +#include <linux/device.h>
> +#include <linux/spinlock.h>
> +#include <linux/platform_device.h>
> +#include <linux/delay.h>
> +#include <linux/io.h>
> +#include <linux/mfd/core.h>
> +#include <linux/mfd/ti_ssp.h>
> +
> +/* Register Offsets */
> +#define REG_REV 0x00
> +#define REG_IOSEL_1 0x04
> +#define REG_IOSEL_2 0x08
> +#define REG_PREDIV 0x0c
> +#define REG_INTR_ST 0x10
> +#define REG_INTR_EN 0x14
> +#define REG_TEST_CTRL 0x18
> +
> +/* Per port registers */
> +#define PORT_CFG_2 0x00
> +#define PORT_ADDR 0x04
> +#define PORT_DATA 0x08
> +#define PORT_CFG_1 0x0c
> +#define PORT_STATE 0x10
> +
> +#define SSP_PORT_CONFIG_MASK (SSP_EARLY_DIN | SSP_DELAY_DOUT)
> +#define SSP_PORT_CLKRATE_MASK 0x0f
> +
> +#define SSP_SEQRAM_WR_EN BIT(4)
> +#define SSP_SEQRAM_RD_EN BIT(5)
> +#define SSP_START BIT(15)
> +#define SSP_BUSY BIT(10)
> +#define SSP_PORT_ASL BIT(7)
> +#define SSP_PORT_CFO1 BIT(6)
> +
> +#define SSP_PORT_SEQRAM_SIZE 32
> +
> +static const int ssp_port_base[] = {0x040, 0x080};
> +static const int ssp_port_seqram[] = {0x100, 0x180};
> +
> +struct ti_ssp {
> + struct resource *res;
> + struct device *dev;
> + void __iomem *regs;
> + spinlock_t lock;
> + struct clk *clk;
> + int irq;
> + wait_queue_head_t wqh;
> +};
> +
> +static inline struct ti_ssp *dev_to_ssp(struct device *dev)
> +{
> + return dev_get_drvdata(dev->parent);
> +}
> +
> +static inline int dev_to_port(struct device *dev)
> +{
> + return to_platform_device(dev)->id;
> +}
> +
> +/* Register Access Helpers, rmw() functions need to run locked */
> +static inline u32 ssp_read(struct ti_ssp *ssp, int reg)
> +{
> + return __raw_readl(ssp->regs + reg);
> +}
> +
> +static inline void ssp_write(struct ti_ssp *ssp, int reg, u32 val)
> +{
> + __raw_writel(val, ssp->regs + reg);
> +}
I'm pretty sure it was resolved that __raw_ versions should not be
used here.
> +
> +static inline void ssp_rmw(struct ti_ssp *ssp, int reg, u32 mask, u32 bits)
> +{
> + u32 val = ssp_read(ssp, reg);
> + val &= ~mask;
> + val |= bits;
> + ssp_write(ssp, reg, val);
or simply:
ssp_write(ssp, reg, (ssp_read(ssp, reg) & ~mask) | bits);
> +}
> +
> +static inline u32 ssp_port_read(struct ti_ssp *ssp, int port, int reg)
> +{
> + return ssp_read(ssp, ssp_port_base[port] + reg);
> +}
> +
> +static inline void ssp_port_write(struct ti_ssp *ssp, int port, int reg,
> + u32 val)
> +{
> + ssp_write(ssp, ssp_port_base[port] + reg, val);
> +}
> +
> +static inline void ssp_port_rmw(struct ti_ssp *ssp, int port, int reg,
> + u32 mask, u32 bits)
> +{
> + ssp_rmw(ssp, ssp_port_base[port] + reg, mask, bits);
> +}
> +
> +static inline void ssp_port_clr_bits(struct ti_ssp *ssp, int port, int reg,
> + u32 bits)
> +{
> + ssp_port_rmw(ssp, port, reg, bits, 0);
> +}
> +
> +static inline void ssp_port_set_bits(struct ti_ssp *ssp, int port, int reg,
> + u32 bits)
> +{
> + ssp_port_rmw(ssp, port, reg, 0, bits);
> +}
> +
> +/* Called to setup port clock mode, caller must hold ssp->lock */
> +static int __set_mode(struct ti_ssp *ssp, int port, int mode)
> +{
> + mode &= SSP_PORT_CONFIG_MASK;
> + ssp_port_rmw(ssp, port, PORT_CFG_1, SSP_PORT_CONFIG_MASK, mode);
> +
> + return 0;
> +}
> +
> +int ti_ssp_set_mode(struct device *dev, int mode)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + int ret;
> +
> + spin_lock(&ssp->lock);
> + ret = __set_mode(ssp, port, mode);
> + spin_unlock(&ssp->lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(ti_ssp_set_mode);
> +
> +/* Called to setup port iosel, caller must hold ssp->lock */
> +static int __set_iosel(struct ti_ssp *ssp, int port, u32 iosel)
> +{
> + unsigned val;
> +
> + /* IOSEL1 gets the least significant 16 bits */
> + val = ssp_read(ssp, REG_IOSEL_1);
> + val &= 0xffff << (port ? 0 : 16);
> + val |= (iosel & 0xffff) << (port ? 16 : 0);
> + ssp_write(ssp, REG_IOSEL_1, val);
> +
> + /* IOSEL2 gets the most significant 16 bits */
> + val = ssp_read(ssp, REG_IOSEL_2);
> + val &= 0x0007 << (port ? 0 : 16);
> + val |= (iosel & 0x00070000) >> (port ? 0 : 16);
> + ssp_write(ssp, REG_IOSEL_2, val);
> +
> + return 0;
> +}
> +
> +int ti_ssp_set_iosel(struct device *dev, u32 iosel)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + int ret;
> +
> + spin_lock(&ssp->lock);
> + ret = __set_iosel(ssp, port, iosel);
> + spin_unlock(&ssp->lock);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(ti_ssp_set_iosel);
> +
> +int ti_ssp_load(struct device *dev, int offs, u32* prog, int len)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + int i;
> +
> + if (len > SSP_PORT_SEQRAM_SIZE)
> + return -ENOSPC;
> +
> + spin_lock(&ssp->lock);
> +
> + /* Enable SeqRAM access */
> + ssp_port_set_bits(ssp, port, PORT_CFG_2, SSP_SEQRAM_WR_EN);
> +
> + /* Copy code */
> + for (i = 0; i < len; i++) {
> + __raw_writel(prog[i], ssp->regs + offs + 4*i +
> + ssp_port_seqram[port]);
> + }
> +
> + /* Disable SeqRAM access */
> + ssp_port_clr_bits(ssp, port, PORT_CFG_2, SSP_SEQRAM_WR_EN);
> +
> + spin_unlock(&ssp->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(ti_ssp_load);
> +
> +int ti_ssp_raw_read(struct device *dev)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + u32 val;
> +
> + val = ssp_read(ssp, REG_IOSEL_2);
> + val >>= (port ? 27 : 11);
> +
> + return val & 0x0f;
> +}
> +EXPORT_SYMBOL(ti_ssp_raw_read);
> +
> +int ti_ssp_raw_write(struct device *dev, u32 val)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + u32 mask;
> +
> + spin_lock(&ssp->lock);
> +
> + val &= 0x0f;
> + val <<= (port ? 22 : 6);
> + mask = 0x0f << (port ? 22 : 6);
> + ssp_rmw(ssp, REG_IOSEL_2, mask, val);
> +
> + spin_unlock(&ssp->lock);
> +
> + return 0;
> +}
> +EXPORT_SYMBOL(ti_ssp_raw_write);
> +
> +static inline int __xfer_done(struct ti_ssp *ssp, int port)
> +{
> + return !(ssp_port_read(ssp, port, PORT_CFG_1) & SSP_BUSY);
> +}
> +
> +int ti_ssp_run(struct device *dev, u32 pc, u32 input, u32 *output)
> +{
> + struct ti_ssp *ssp = dev_to_ssp(dev);
> + int port = dev_to_port(dev);
> + int ret;
> +
> + if (pc & ~(0x3f))
> + return -EINVAL;
> +
> + /* Grab ssp->lock to serialize rmw on ssp registers */
> + spin_lock(&ssp->lock);
> +
> + ssp_port_write(ssp, port, PORT_ADDR, input >> 16);
> + ssp_port_write(ssp, port, PORT_DATA, input & 0xffff);
> + ssp_port_rmw(ssp, port, PORT_CFG_1, 0x3f, pc);
> +
> + /* grab wait queue head lock to avoid race with the isr */
> + spin_lock_irq(&ssp->wqh.lock);
> +
> + /* kick off sequence execution in hardware */
> + ssp_port_set_bits(ssp, port, PORT_CFG_1, SSP_START);
> +
> + /* drop ssp lock; no register writes beyond this */
> + spin_unlock(&ssp->lock);
> +
> + ret = wait_event_interruptible_locked_irq(ssp->wqh,
> + __xfer_done(ssp, port));
> + spin_unlock_irq(&ssp->wqh.lock);
> +
> + if (ret < 0)
> + return ret;
> +
> + if (output) {
> + *output = (ssp_port_read(ssp, port, PORT_ADDR) << 16) |
> + (ssp_port_read(ssp, port, PORT_DATA) & 0xffff);
> + }
> +
> + ret = ssp_port_read(ssp, port, PORT_STATE) & 0x3f; /* stop address */
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(ti_ssp_run);
> +
> +static irqreturn_t ti_ssp_interrupt(int irq, void *dev_data)
> +{
> + struct ti_ssp *ssp = dev_data;
> +
> + spin_lock(&ssp->wqh.lock);
> +
> + ssp_write(ssp, REG_INTR_ST, 0x3);
> + wake_up_locked(&ssp->wqh);
> +
> + spin_unlock(&ssp->wqh.lock);
> +
> + return IRQ_HANDLED;
> +}
> +
> +static int __devinit ti_ssp_probe(struct platform_device *pdev)
> +{
> + static struct ti_ssp *ssp;
> + const struct ti_ssp_data *pdata = pdev->dev.platform_data;
> + int error = 0, prediv = 0xff, id;
> + unsigned long sysclk;
> + struct device *dev = &pdev->dev;
> + struct mfd_cell cells[2];
> +
> + ssp = kzalloc(sizeof(*ssp), GFP_KERNEL);
> + if (!ssp) {
> + dev_err(dev, "cannot allocate device info\n");
> + return -ENOMEM;
> + }
> +
> + ssp->dev = dev;
> + dev_set_drvdata(dev, ssp);
> +
> + ssp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> + if (!ssp->res) {
> + error = -ENODEV;
> + dev_err(dev, "cannot determine register area\n");
> + goto error_res;
> + }
> +
> + if (!request_mem_region(ssp->res->start, resource_size(ssp->res),
> + pdev->name)) {
> + error = -ENOMEM;
> + dev_err(dev, "cannot claim register memory\n");
> + goto error_res;
> + }
> +
> + ssp->regs = ioremap(ssp->res->start, resource_size(ssp->res));
> + if (!ssp->regs) {
> + error = -ENOMEM;
> + dev_err(dev, "cannot map register memory\n");
> + goto error_map;
> + }
> +
> + ssp->clk = clk_get(dev, NULL);
> + if (IS_ERR(ssp->clk)) {
> + error = PTR_ERR(ssp->clk);
> + dev_err(dev, "cannot claim device clock\n");
> + goto error_clk;
> + }
> +
> + ssp->irq = platform_get_irq(pdev, 0);
> + if (ssp->irq < 0) {
> + error = -ENODEV;
> + dev_err(dev, "unknown irq\n");
> + goto error_irq;
> + }
> +
> + error = request_threaded_irq(ssp->irq, NULL, ti_ssp_interrupt, 0,
> + dev_name(dev), ssp);
> + if (error < 0) {
> + dev_err(dev, "cannot acquire irq\n");
> + goto error_irq;
> + }
> +
> + spin_lock_init(&ssp->lock);
> + init_waitqueue_head(&ssp->wqh);
> +
> + /* Power on and initialize SSP */
> + error = clk_enable(ssp->clk);
> + if (error) {
> + dev_err(dev, "cannot enable device clock\n");
> + goto error_enable;
> + }
> +
> + /* Reset registers to a sensible known state */
> + ssp_write(ssp, REG_IOSEL_1, 0);
> + ssp_write(ssp, REG_IOSEL_2, 0);
> + ssp_write(ssp, REG_INTR_EN, 0x3);
> + ssp_write(ssp, REG_INTR_ST, 0x3);
> + ssp_write(ssp, REG_TEST_CTRL, 0);
> + ssp_port_write(ssp, 0, PORT_CFG_1, SSP_PORT_ASL);
> + ssp_port_write(ssp, 1, PORT_CFG_1, SSP_PORT_ASL);
> + ssp_port_write(ssp, 0, PORT_CFG_2, SSP_PORT_CFO1);
> + ssp_port_write(ssp, 1, PORT_CFG_2, SSP_PORT_CFO1);
> +
> + sysclk = clk_get_rate(ssp->clk);
> + if (pdata && pdata->out_clock)
> + prediv = (sysclk / pdata->out_clock) - 1;
> + prediv = clamp(prediv, 0, 0xff);
> + ssp_rmw(ssp, REG_PREDIV, 0xff, prediv);
> +
> + memset(cells, 0, sizeof(cells));
> + for (id = 0; id < 2; id++) {
> + const struct ti_ssp_dev_data *data = &pdata->dev_data[id];
> +
> + cells[id].id = id;
> + cells[id].name = data->dev_name;
> + cells[id].platform_data = data->pdata;
> + cells[id].data_size = data->pdata_size;
> + }
> +
> + error = mfd_add_devices(dev, 0, cells, 2, NULL, 0);
> + if (error < 0) {
> + dev_err(dev, "cannot add mfd cells\n");
> + goto error_enable;
> + }
> +
> + return 0;
> +
> +error_enable:
> + free_irq(ssp->irq, ssp);
> +error_irq:
> + clk_put(ssp->clk);
> +error_clk:
> + iounmap(ssp->regs);
> +error_map:
> + release_mem_region(ssp->res->start, resource_size(ssp->res));
> +error_res:
> + kfree(ssp);
> + return error;
> +}
> +
> +static int __devexit ti_ssp_remove(struct platform_device *pdev)
> +{
> + struct device *dev = &pdev->dev;
> + struct ti_ssp *ssp = dev_get_drvdata(dev);
> +
> + mfd_remove_devices(dev);
> + clk_disable(ssp->clk);
> + free_irq(ssp->irq, ssp);
> + clk_put(ssp->clk);
> + iounmap(ssp->regs);
> + release_mem_region(ssp->res->start, resource_size(ssp->res));
> + kfree(ssp);
> + dev_set_drvdata(dev, NULL);
> + return 0;
> +}
> +
> +static struct platform_driver ti_ssp_driver = {
> + .probe = ti_ssp_probe,
> + .remove = __devexit_p(ti_ssp_remove),
> + .driver = {
> + .name = "ti-ssp",
> + .owner = THIS_MODULE,
> + }
> +};
> +
> +static int __init ti_ssp_init(void)
> +{
> + return platform_driver_register(&ti_ssp_driver);
> +}
> +arch_initcall_sync(ti_ssp_init);
This should be module_init(). More on this when I reply to the spi
driver.
> +
> +static void __exit ti_ssp_exit(void)
> +{
> + platform_driver_unregister(&ti_ssp_driver);
> +}
> +module_exit(ti_ssp_exit);
> +
> +MODULE_DESCRIPTION("Sequencer Serial Port (SSP) Driver");
> +MODULE_AUTHOR("Cyril Chemparathy");
> +MODULE_LICENSE("GPL");
> +MODULE_ALIAS("platform:ti-ssp");
> diff --git a/include/linux/mfd/ti_ssp.h b/include/linux/mfd/ti_ssp.h
> new file mode 100644
> index 0000000..021fe09
> --- /dev/null
> +++ b/include/linux/mfd/ti_ssp.h
> @@ -0,0 +1,87 @@
> +/*
> + * Sequencer Serial Port (SSP) driver for Texas Instruments' SoCs
> + *
> + * Copyright (C) 2010 Texas Instruments Inc
> + *
> + * 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 __TI_SSP_H__
> +#define __TI_SSP_H__
> +
> +struct ti_ssp_dev_data {
> + const char *dev_name;
> + void *pdata;
> + size_t pdata_size;
> +};
> +
> +struct ti_ssp_data {
> + unsigned long out_clock;
> + struct ti_ssp_dev_data dev_data[2];
> +};
> +
> +/*
> + * Sequencer port IO pin configuration bits. These do not correlate 1-1 with
> + * the hardware. The iosel field in the port data combines iosel1 and iosel2,
> + * and is therefore not a direct map to register space. It is best to use the
> + * macros below to construct iosel values.
> + *
> + * least significant 16 bits --> iosel1
> + * most significant 16 bits --> iosel2
> + */
> +
> +#define SSP_IN 0x0000
> +#define SSP_DATA 0x0001
> +#define SSP_CLOCK 0x0002
> +#define SSP_CHIPSEL 0x0003
> +#define SSP_OUT 0x0004
> +#define SSP_PIN_SEL(pin, v) ((v) << ((pin) * 3))
> +#define SSP_PIN_MASK(pin) SSP_PIN_SEL(pin, 0x7)
> +#define SSP_INPUT_SEL(pin) ((pin) << 16)
> +
> +/* Sequencer port config bits */
> +#define SSP_EARLY_DIN BIT(8)
> +#define SSP_DELAY_DOUT BIT(9)
> +
> +/* Sequence map definitions */
> +#define SSP_CLK_HIGH BIT(0)
> +#define SSP_CLK_LOW 0
> +#define SSP_DATA_HIGH BIT(1)
> +#define SSP_DATA_LOW 0
> +#define SSP_CS_HIGH BIT(2)
> +#define SSP_CS_LOW 0
> +#define SSP_OUT_MODE BIT(3)
> +#define SSP_IN_MODE 0
> +#define SSP_DATA_REG BIT(4)
> +#define SSP_ADDR_REG 0
> +
> +#define SSP_OPCODE_DIRECT ((0x0) << 5)
> +#define SSP_OPCODE_TOGGLE ((0x1) << 5)
> +#define SSP_OPCODE_SHIFT ((0x2) << 5)
> +#define SSP_OPCODE_BRANCH0 ((0x4) << 5)
> +#define SSP_OPCODE_BRANCH1 ((0x5) << 5)
> +#define SSP_OPCODE_BRANCH ((0x6) << 5)
> +#define SSP_OPCODE_STOP ((0x7) << 5)
> +#define SSP_BRANCH(addr) ((addr) << 8)
> +#define SSP_COUNT(cycles) ((cycles) << 8)
> +
> +int ti_ssp_raw_read(struct device *dev);
> +int ti_ssp_raw_write(struct device *dev, u32 val);
> +int ti_ssp_load(struct device *dev, int offs, u32* prog, int len);
> +int ti_ssp_run(struct device *dev, u32 pc, u32 input, u32 *output);
> +int ti_ssp_set_mode(struct device *dev, int mode);
> +int ti_ssp_set_iosel(struct device *dev, u32 iosel);
> +
> +#endif /* __TI_SSP_H__ */
> --
> 1.7.1
>
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