Esempio n. 1
0
int adc_qmsi_init(struct device *dev)
{
	qm_adc_config_t cfg;

	struct adc_info *info = dev->driver_data;

	dev->driver_api = &api_funcs;

	/* Enable the ADC and set the clock divisor */
	clk_periph_enable(CLK_PERIPH_CLK | CLK_PERIPH_ADC |
				CLK_PERIPH_ADC_REGISTER);
	/* ADC clock  divider*/
	clk_adc_set_div(CONFIG_ADC_QMSI_CLOCK_RATIO);

	/* Set up config */
	/* Clock cycles between the start of each sample */
	cfg.window = CONFIG_ADC_QMSI_SERIAL_DELAY;
	cfg.resolution = CONFIG_ADC_QMSI_SAMPLE_WIDTH;

	qm_adc_set_config(QM_ADC_0, &cfg);

	device_sync_call_init(&info->sync);

	nano_sem_init(&info->sem);
	nano_sem_give(&info->sem);
	info->state = ADC_STATE_IDLE;

	adc_config_irq();

	return 0;
}
Esempio n. 2
0
int spi_dw_init(struct device *dev)
{
	struct spi_dw_config *info = dev->config->config_info;
	struct spi_dw_data *spi = dev->driver_data;

	_clock_config(dev);
	_clock_on(dev);

#ifndef CONFIG_SOC_QUARK_SE_SS
	if (read_ssi_comp_version(info->regs) != DW_SSI_COMP_VERSION) {
		_clock_off(dev);
		return DEV_NOT_CONFIG;
	}
#endif

	dev->driver_api = &dw_spi_api;

	info->config_func();

	device_sync_call_init(&spi->sync);

	_spi_config_cs(dev);

	/* Masking interrupt and making sure controller is disabled */
	write_imr(DW_SPI_IMR_MASK, info->regs);
	clear_bit_ssienr(info->regs);

	DBG("Designware SPI driver initialized on device: %p\n", dev);

	return DEV_OK;
}
Esempio n. 3
0
int i2c_qse_ss_initialize(struct device *dev)
{
	struct i2c_qse_ss_rom_config * const rom = dev->config->config_info;
	struct i2c_qse_ss_dev_config * const dw = dev->driver_data;

	dev->driver_api = &ss_funcs;

	if (rom->config_func) {
		rom->config_func(dev);
	}

	/* Enable clock for controller so we can talk to it */
	_i2c_qse_ss_reg_write_or(dev, REG_CON, IC_CON_CLK_ENA);

	device_sync_call_init(&dw->sync);

	if (i2c_qse_ss_runtime_configure(dev, dw->app_config.raw) != DEV_OK) {
		DBG("I2C_SS: Cannot set default configuration 0x%x\n",
		    dw->app_config.raw);
		return DEV_NOT_CONFIG;
	}

	dw->state = I2C_QSE_SS_STATE_READY;

	return DEV_OK;
}
Esempio n. 4
0
static int spi_qmsi_init(struct device *dev)
{
	struct spi_qmsi_config *spi_config = dev->config->config_info;
	struct spi_qmsi_runtime *context = dev->driver_data;

	dev->driver_api = &spi_qmsi_api;

	switch (spi_config->spi) {
	case QM_SPI_MST_0:
		IRQ_CONNECT(CONFIG_SPI_QMSI_PORT_0_IRQ,
			    CONFIG_SPI_QMSI_PORT_0_PRI, qm_spi_master_0_isr,
			    0, IOAPIC_LEVEL | IOAPIC_HIGH);
		irq_enable(CONFIG_SPI_QMSI_PORT_0_IRQ);
		clk_periph_enable(CLK_PERIPH_CLK | CLK_PERIPH_SPI_M0_REGISTER);
		QM_SCSS_INT->int_spi_mst_0_mask &= ~BIT(0);
		break;
	case QM_SPI_MST_1:
		IRQ_CONNECT(CONFIG_SPI_QMSI_PORT_1_IRQ,
			    CONFIG_SPI_QMSI_PORT_1_PRI, qm_spi_master_1_isr,
			    0, IOAPIC_LEVEL | IOAPIC_HIGH);
		irq_enable(CONFIG_SPI_QMSI_PORT_1_IRQ);
		clk_periph_enable(CLK_PERIPH_CLK | CLK_PERIPH_SPI_M1_REGISTER);
		QM_SCSS_INT->int_spi_mst_1_mask &= ~BIT(0);
		break;
	default:
		return DEV_FAIL;
	}

	context->gpio_cs = gpio_cs_init(spi_config);

	device_sync_call_init(&context->sync);

	return DEV_OK;
}
Esempio n. 5
0
int i2c_dw_initialize(struct device *port)
{
	struct i2c_dw_rom_config const * const rom = port->config->config_info;
	struct i2c_dw_dev_config * const dev = port->driver_data;

	volatile struct i2c_dw_registers *regs;

	if (!i2c_dw_pci_setup(port)) {
		port->driver_api = NULL;
		return -EPERM;
	}

	device_sync_call_init(&dev->sync);

	regs = (struct i2c_dw_registers *) rom->base_address;

	/* verify that we have a valid DesignWare register first */
	if (regs->ic_comp_type != I2C_DW_MAGIC_KEY) {
		port->driver_api = NULL;
		DBG("I2C: DesignWare magic key not found, check base address.");
		DBG(" Stopping initialization\n");
		return -EPERM;
	}

	/*
	 * grab the default value on initialization.  This should be set to the
	 * IC_MAX_SPEED_MODE in the hardware.  If it does support high speed we
	 * can move provide support for it
	 */
	if (regs->ic_con.bits.speed == I2C_DW_SPEED_HIGH) {
		DBG("I2C: high speed supported\n");
		dev->support_hs_mode = true;
	} else {
		DBG("I2C: high speed NOT supported\n");
		dev->support_hs_mode = false;
	}

	rom->config_func(port);

	if (i2c_dw_runtime_configure(port, dev->app_config.raw) != 0) {
		DBG("I2C: Cannot set default configuration 0x%x\n",
		    dev->app_config.raw);
		return -EPERM;
	}

	dev->state = I2C_DW_STATE_READY;

	return 0;
}
Esempio n. 6
0
int spi_k64_init(struct device *dev)
{
	struct spi_k64_config *info = dev->config->config_info;
	struct spi_k64_data *data = dev->driver_data;
	uint32_t mcr;

	dev->driver_api = &k64_spi_api;

	/* Enable module clocking */

	sys_set_bit(info->clk_gate_reg, info->clk_gate_bit);

	/*
	 * Ensure module operation is stopped and enabled before writing anything
	 * more to the registers.
	 * (Clear MCR[MDIS] and set MCR[HALT].)
	 */

	DBG("halt\n");
	mcr = SPI_K64_MCR_HALT;
	sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));

	while (sys_read32(info->regs + SPI_K64_REG_SR) & SPI_K64_SR_TXRXS) {
		DBG("SPI Controller dev %p is running.  Waiting for Halt.\n", dev);
	}

	/* Clear Tx and Rx FIFOs */

	mcr |= (SPI_K64_MCR_CLR_RXF | SPI_K64_MCR_CLR_TXF);

	DBG("fifo clr\n");
 	sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));

	/* Set master mode */

	mcr = SPI_K64_MCR_MSTR | SPI_K64_MCR_HALT;
	DBG("master mode\n");
 	sys_write32(mcr, (info->regs + SPI_K64_REG_MCR));

	/* Disable SPI module interrupt generation */

	DBG("irq disable\n");
	sys_write32(0, (info->regs + SPI_K64_REG_RSER));

	/* Clear status */

	DBG("status clr\n");
	sys_write32((SPI_K64_SR_RFDF | SPI_K64_SR_RFOF | SPI_K64_SR_TFUF |
				SPI_K64_SR_EOQF	| SPI_K64_SR_TCF),
				(info->regs + SPI_K64_REG_SR));

    /* Set up the synchronous call mechanism */

	device_sync_call_init(&data->sync_info);

	/* Configure and enable SPI module IRQs */

	info->config_func();

	irq_enable(info->irq);

	/* 
	 * Enable Rx overflow interrupt generation.
	 * Note that Tx underflow is only generated when in slave mode.
	 */

	DBG("rxfifo overflow enable\n");
	sys_write32(SPI_K64_RSER_RFOF_RE, (info->regs + SPI_K64_REG_RSER));

	DBG("K64 SPI Driver initialized on device: %p\n", dev);

	/* operation remains disabled (MCR[HALT] = 1)*/

	return DEV_OK;
}