static void davinci_source_power(struct musb *musb, int is_on, int immediate)
{
#if defined(CONFIG_MACH_DAVINCI_EVM) || defined(CONFIG_MACH_DAVINCI_DM6467_EVM)
if (is_on)
is_on = 1;
if (vbus_state == is_on)
return;
vbus_state = !is_on; /* 0/1 vs "-1 == unknown/init" */
if (machine_is_davinci_evm() || machine_is_davinci_dm6467_evm()) {
static DECLARE_WORK(evm_vbus_work, evm_deferred_drvvbus);
if (immediate) {
if (machine_is_davinci_evm())
gpio_set_value_cansleep(GPIO_nVBUS_DRV,
vbus_state);
if (machine_is_davinci_dm6467_evm())
usb_vbus_control(vbus_state);
} else
schedule_work(&evm_vbus_work);
}
if (immediate)
vbus_state = is_on;
#endif
if (cpu_is_davinci_dm365())
gpio_set_value(33, is_on);
}
/* I2C operations are always synchronous, and require a task context.
* With unloaded systems, using the shared workqueue seems to suffice
* to satisfy the 100msec A_WAIT_VRISE timeout...
*/
static void evm_deferred_drvvbus(struct work_struct *ignored)
{
if (machine_is_davinci_evm())
gpio_set_value_cansleep(GPIO_nVBUS_DRV, vbus_state);
if (machine_is_davinci_dm6467_evm())
usb_vbus_control(vbus_state);
vbus_state = !vbus_state;
}
static int evm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
int ret = 0;
unsigned sysclk;
/* ASP1 on DM355 EVM is clocked by an external oscillator */
if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm() ||
machine_is_davinci_dm365_evm())
sysclk = 27000000;
/* ASP0 in DM6446 EVM is clocked by U55, as configured by
* board-dm644x-evm.c using GPIOs from U18. There are six
* options; here we "know" we use a 48 KHz sample rate.
*/
else if (machine_is_davinci_evm())
sysclk = 12288000;
else if (machine_is_davinci_da830_evm() ||
machine_is_davinci_da850_evm())
sysclk = 24576000;
/* On AM335X, CODEC gets MCLK from external Xtal (12MHz). */
else if (machine_is_am335xevm())
sysclk = 12000000;
else
return -EINVAL;
/* set codec DAI configuration */
ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
if (ret < 0)
return ret;
/* set cpu DAI configuration */
ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
if (ret < 0)
return ret;
/* set the codec system clock */
ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
return 0;
}
static int __init evm_init(void)
{
struct snd_soc_card *evm_snd_dev_data;
int index;
int ret;
/*
* If dtb is there, the devices will be created dynamically.
* Only register platfrom driver structure.
*/
#if defined(CONFIG_OF)
if (of_have_populated_dt())
return platform_driver_register(&davinci_evm_driver);
#endif
if (machine_is_davinci_evm()) {
evm_snd_dev_data = &dm6446_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm355_evm()) {
evm_snd_dev_data = &dm355_snd_soc_card_evm;
index = 1;
} else if (machine_is_davinci_dm365_evm()) {
evm_snd_dev_data = &dm365_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm6467_evm()) {
evm_snd_dev_data = &dm6467_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_da830_evm()) {
evm_snd_dev_data = &da830_snd_soc_card;
index = 1;
} else if (machine_is_davinci_da850_evm()) {
evm_snd_dev_data = &da850_snd_soc_card;
index = 0;
} else
return -EINVAL;
evm_snd_device = platform_device_alloc("soc-audio", index);
if (!evm_snd_device)
return -ENOMEM;
platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
ret = platform_device_add(evm_snd_device);
if (ret)
platform_device_put(evm_snd_device);
return ret;
}
static int __init evm_init(void)
{
struct snd_soc_card *evm_snd_dev_data;
int index;
int ret;
if (machine_is_davinci_evm()) {
evm_snd_dev_data = &dm6446_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm355_evm()) {
evm_snd_dev_data = &dm355_snd_soc_card_evm;
index = 1;
} else if (machine_is_davinci_dm365_evm()) {
evm_snd_dev_data = &dm365_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_dm6467_evm()) {
evm_snd_dev_data = &dm6467_snd_soc_card_evm;
index = 0;
} else if (machine_is_davinci_da830_evm()) {
evm_snd_dev_data = &da830_snd_soc_card;
index = 1;
} else if (machine_is_davinci_da850_evm()) {
evm_snd_dev_data = &da850_snd_soc_card;
index = 0;
} else if (machine_is_am335xevm()) {
evm_snd_dev_data = &am335x_snd_soc_card;
index = 0;
} else
return -EINVAL;
evm_snd_device = platform_device_alloc("soc-audio", index);
if (!evm_snd_device) {
return -ENOMEM;
}
platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
ret = platform_device_add(evm_snd_device);
if (ret)
platform_device_put(evm_snd_device);
return ret;
}
static int evm_hw_params(struct snd_pcm_substream *substream,
struct snd_pcm_hw_params *params)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *codec_dai = rtd->dai->codec_dai;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
int ret = 0;
unsigned sysclk;
if (machine_is_davinci_dm355_evm() || machine_is_davinci_dm6467_evm())
sysclk = 27000000;
else if (machine_is_davinci_evm())
sysclk = 12288000;
else if (machine_is_davinci_da830_evm() ||
machine_is_davinci_da850_evm())
sysclk = 24576000;
else
return -EINVAL;
ret = snd_soc_dai_set_fmt(codec_dai, AUDIO_FORMAT);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_fmt(cpu_dai, AUDIO_FORMAT);
if (ret < 0)
return ret;
ret = snd_soc_dai_set_sysclk(codec_dai, 0, sysclk, SND_SOC_CLOCK_OUT);
if (ret < 0)
return ret;
return 0;
}
static int __init evm_init(void)
{
struct snd_soc_device *evm_snd_dev_data;
int index;
int ret;
if (machine_is_davinci_evm()) {
evm_snd_dev_data = &evm_snd_devdata;
index = 0;
} else if (machine_is_davinci_dm355_evm()) {
evm_snd_dev_data = &evm_snd_devdata;
index = 1;
} else if (machine_is_davinci_dm6467_evm()) {
evm_snd_dev_data = &dm6467_evm_snd_devdata;
index = 0;
} else if (machine_is_davinci_da830_evm()) {
evm_snd_dev_data = &da830_evm_snd_devdata;
index = 1;
} else if (machine_is_davinci_da850_evm()) {
evm_snd_dev_data = &da850_evm_snd_devdata;
index = 0;
} else
return -EINVAL;
evm_snd_device = platform_device_alloc("soc-audio", index);
if (!evm_snd_device)
return -ENOMEM;
platform_set_drvdata(evm_snd_device, evm_snd_dev_data);
evm_snd_dev_data->dev = &evm_snd_device->dev;
ret = platform_device_add(evm_snd_device);
if (ret)
platform_device_put(evm_snd_device);
return ret;
}
static int __init i2c_davinci_init(void)
{
int status;
struct device *dev = NULL;
DEB0("%s %s", __TIME__, __DATE__);
DEB1("i2c_davinci_init()");
if (cpu_is_davinci_dm6467())
davinci_i2c_expander_op (0x3A, I2C_INT_DM646X, 0);
/*
* NOTE: On DaVinci EVM, the i2c bus frequency is set to 20kHz
* so that the MSP430, which is doing software i2c, has
* some extra processing time
*/
if (machine_is_davinci_evm())
i2c_davinci_busFreq = 20;
else if (machine_is_davinci_dm6467_evm())
i2c_davinci_busFreq = 100;
else if (i2c_davinci_busFreq > 200)
i2c_davinci_busFreq = 400; /*Fast mode */
else
i2c_davinci_busFreq = 100; /*Standard mode */
i2c_clock = clk_get (dev, "I2CCLK");
if (IS_ERR(i2c_clock))
return -1;
clk_use (i2c_clock);
clk_enable (i2c_clock);
i2c_davinci_inputClock = clk_get_rate (i2c_clock);
DEB1 ("IP CLOCK = %ld", i2c_davinci_inputClock);
memset(&i2c_davinci_dev, 0, sizeof(i2c_davinci_dev));
init_waitqueue_head(&i2c_davinci_dev.cmd_wait);
i2c_davinci_dev.regs = (davinci_i2cregsovly)I2C_BASE;
status = (int)request_region(I2C_BASE, I2C_IOSIZE, MODULE_NAME);
if (!status) {
i2c_err("I2C is already in use\n");
return -ENODEV;
}
status = request_irq(IRQ_I2C, i2c_davinci_isr, 0, "i2c",
&i2c_davinci_dev);
if (status) {
i2c_err("failed to request I2C IRQ");
goto do_release_region;
}
i2c_set_adapdata(&i2c_davinci_adap, &i2c_davinci_dev);
status = i2c_add_adapter(&i2c_davinci_adap);
if (status) {
i2c_err("failed to add adapter");
goto do_free_irq;
}
i2c_davinci_reset(&i2c_davinci_dev);
if (driver_register(&davinci_i2c_driver) != 0)
printk(KERN_ERR "Driver register failed for davinci_i2c\n");
if (platform_device_register(&davinci_i2c_device) != 0) {
printk(KERN_ERR "Device register failed for i2c\n");
driver_unregister(&davinci_i2c_driver);
}
return 0;
do_free_irq:
free_irq(IRQ_I2C, &i2c_davinci_dev);
do_release_region:
release_region(I2C_BASE, I2C_IOSIZE);
return status;
}
