Release 4.7 drivers/spi/spi-coldfire-qspi.c

Directory: drivers/spi
/*
 * Freescale/Motorola Coldfire Queued SPI driver
 *
 * Copyright 2010 Steven King <sfking@fdwdc.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.
*/

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/interrupt.h>
#include <linux/errno.h>
#include <linux/platform_device.h>
#include <linux/sched.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/err.h>
#include <linux/spi/spi.h>
#include <linux/pm_runtime.h>

#include <asm/coldfire.h>
#include <asm/mcfsim.h>
#include <asm/mcfqspi.h>


#define	DRIVER_NAME "mcfqspi"


#define	MCFQSPI_BUSCLK			(MCF_BUSCLK / 2)


#define	MCFQSPI_QMR			0x00

#define		MCFQSPI_QMR_MSTR	0x8000

#define		MCFQSPI_QMR_CPOL	0x0200

#define		MCFQSPI_QMR_CPHA	0x0100

#define	MCFQSPI_QDLYR			0x04

#define		MCFQSPI_QDLYR_SPE	0x8000

#define	MCFQSPI_QWR			0x08

#define		MCFQSPI_QWR_HALT	0x8000

#define		MCFQSPI_QWR_WREN	0x4000

#define		MCFQSPI_QWR_CSIV	0x1000

#define	MCFQSPI_QIR			0x0C

#define		MCFQSPI_QIR_WCEFB	0x8000

#define		MCFQSPI_QIR_ABRTB	0x4000

#define		MCFQSPI_QIR_ABRTL	0x1000

#define		MCFQSPI_QIR_WCEFE	0x0800

#define		MCFQSPI_QIR_ABRTE	0x0400

#define		MCFQSPI_QIR_SPIFE	0x0100

#define		MCFQSPI_QIR_WCEF	0x0008

#define		MCFQSPI_QIR_ABRT	0x0004

#define		MCFQSPI_QIR_SPIF	0x0001

#define	MCFQSPI_QAR			0x010

#define		MCFQSPI_QAR_TXBUF	0x00

#define		MCFQSPI_QAR_RXBUF	0x10

#define		MCFQSPI_QAR_CMDBUF	0x20

#define	MCFQSPI_QDR			0x014

#define	MCFQSPI_QCR			0x014

#define		MCFQSPI_QCR_CONT	0x8000

#define		MCFQSPI_QCR_BITSE	0x4000

#define		MCFQSPI_QCR_DT		0x2000


struct mcfqspi {
	
void __iomem *iobase;
	
int irq;
	
struct clk *clk;
	
struct mcfqspi_cs_control *cs_control;

	
wait_queue_head_t waitq;
};



static void mcfqspi_wr_qmr(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QMR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static void mcfqspi_wr_qdlyr(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QDLYR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static u16 mcfqspi_rd_qdlyr(struct mcfqspi *mcfqspi)
{
	return readw(mcfqspi->iobase + MCFQSPI_QDLYR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void mcfqspi_wr_qwr(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QWR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static void mcfqspi_wr_qir(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QIR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static void mcfqspi_wr_qar(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QAR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static void mcfqspi_wr_qdr(struct mcfqspi *mcfqspi, u16 val)
{
	writew(val, mcfqspi->iobase + MCFQSPI_QDR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 25 100.00% 1 100.00%
Total 25 100.00% 1 100.00%



static u16 mcfqspi_rd_qdr(struct mcfqspi *mcfqspi)
{
	return readw(mcfqspi->iobase + MCFQSPI_QDR);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 21 100.00% 1 100.00%
Total 21 100.00% 1 100.00%



static void mcfqspi_cs_select(struct mcfqspi *mcfqspi, u8 chip_select,
			    bool cs_high)
{
	mcfqspi->cs_control->select(mcfqspi->cs_control, chip_select, cs_high);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static void mcfqspi_cs_deselect(struct mcfqspi *mcfqspi, u8 chip_select,
				bool cs_high)
{
	mcfqspi->cs_control->deselect(mcfqspi->cs_control, chip_select, cs_high);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 32 100.00% 1 100.00%
Total 32 100.00% 1 100.00%



static int mcfqspi_cs_setup(struct mcfqspi *mcfqspi)
{
	return (mcfqspi->cs_control->setup) ?
		mcfqspi->cs_control->setup(mcfqspi->cs_control) : 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 33 100.00% 1 100.00%
Total 33 100.00% 1 100.00%



static void mcfqspi_cs_teardown(struct mcfqspi *mcfqspi)
{
	if (mcfqspi->cs_control->teardown)
		mcfqspi->cs_control->teardown(mcfqspi->cs_control);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 30 100.00% 1 100.00%
Total 30 100.00% 1 100.00%



static u8 mcfqspi_qmr_baud(u32 speed_hz)
{
	return clamp((MCFQSPI_BUSCLK + speed_hz - 1) / speed_hz, 2u, 255u);
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 27 100.00% 1 100.00%
Total 27 100.00% 1 100.00%



static bool mcfqspi_qdlyr_spe(struct mcfqspi *mcfqspi)
{
	return mcfqspi_rd_qdlyr(mcfqspi) & MCFQSPI_QDLYR_SPE;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 19 100.00% 1 100.00%
Total 19 100.00% 1 100.00%



static irqreturn_t mcfqspi_irq_handler(int this_irq, void *dev_id)
{
	struct mcfqspi *mcfqspi = dev_id;

	/* clear interrupt */
	mcfqspi_wr_qir(mcfqspi, MCFQSPI_QIR_SPIFE | MCFQSPI_QIR_SPIF);
	wake_up(&mcfqspi->waitq);

	return IRQ_HANDLED;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 41 100.00% 1 100.00%
Total 41 100.00% 1 100.00%



static void mcfqspi_transfer_msg8(struct mcfqspi *mcfqspi, unsigned count,
				  const u8 *txbuf, u8 *rxbuf)
{
	unsigned i, n, offset = 0;

	n = min(count, 16u);

	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_CMDBUF);
	for (i = 0; i < n; ++i)
		mcfqspi_wr_qdr(mcfqspi, MCFQSPI_QCR_BITSE);

	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_TXBUF);
	if (txbuf)
		for (i = 0; i < n; ++i)
			mcfqspi_wr_qdr(mcfqspi, *txbuf++);
	else
		for (i = 0; i < count; ++i)
			mcfqspi_wr_qdr(mcfqspi, 0);

	count -= n;
	if (count) {
		u16 qwr = 0xf08;
		mcfqspi_wr_qwr(mcfqspi, 0x700);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);

		do {
			wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
			mcfqspi_wr_qwr(mcfqspi, qwr);
			mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
			if (rxbuf) {
				mcfqspi_wr_qar(mcfqspi,
					       MCFQSPI_QAR_RXBUF + offset);
				for (i = 0; i < 8; ++i)
					*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
			}
			n = min(count, 8u);
			if (txbuf) {
				mcfqspi_wr_qar(mcfqspi,
					       MCFQSPI_QAR_TXBUF + offset);
				for (i = 0; i < n; ++i)
					mcfqspi_wr_qdr(mcfqspi, *txbuf++);
			}
			qwr = (offset ? 0x808 : 0) + ((n - 1) << 8);
			offset ^= 8;
			count -= n;
		} while (count);
		wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
		mcfqspi_wr_qwr(mcfqspi, qwr);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
		if (rxbuf) {
			mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);
			for (i = 0; i < 8; ++i)
				*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
			offset ^= 8;
		}
	} else {
		mcfqspi_wr_qwr(mcfqspi, (n - 1) << 8);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
	}
	wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
	if (rxbuf) {
		mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);
		for (i = 0; i < n; ++i)
			*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 438 100.00% 1 100.00%
Total 438 100.00% 1 100.00%



static void mcfqspi_transfer_msg16(struct mcfqspi *mcfqspi, unsigned count,
				   const u16 *txbuf, u16 *rxbuf)
{
	unsigned i, n, offset = 0;

	n = min(count, 16u);

	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_CMDBUF);
	for (i = 0; i < n; ++i)
		mcfqspi_wr_qdr(mcfqspi, MCFQSPI_QCR_BITSE);

	mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_TXBUF);
	if (txbuf)
		for (i = 0; i < n; ++i)
			mcfqspi_wr_qdr(mcfqspi, *txbuf++);
	else
		for (i = 0; i < count; ++i)
			mcfqspi_wr_qdr(mcfqspi, 0);

	count -= n;
	if (count) {
		u16 qwr = 0xf08;
		mcfqspi_wr_qwr(mcfqspi, 0x700);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);

		do {
			wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
			mcfqspi_wr_qwr(mcfqspi, qwr);
			mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
			if (rxbuf) {
				mcfqspi_wr_qar(mcfqspi,
					       MCFQSPI_QAR_RXBUF + offset);
				for (i = 0; i < 8; ++i)
					*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
			}
			n = min(count, 8u);
			if (txbuf) {
				mcfqspi_wr_qar(mcfqspi,
					       MCFQSPI_QAR_TXBUF + offset);
				for (i = 0; i < n; ++i)
					mcfqspi_wr_qdr(mcfqspi, *txbuf++);
			}
			qwr = (offset ? 0x808 : 0x000) + ((n - 1) << 8);
			offset ^= 8;
			count -= n;
		} while (count);
		wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
		mcfqspi_wr_qwr(mcfqspi, qwr);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
		if (rxbuf) {
			mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);
			for (i = 0; i < 8; ++i)
				*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
			offset ^= 8;
		}
	} else {
		mcfqspi_wr_qwr(mcfqspi, (n - 1) << 8);
		mcfqspi_wr_qdlyr(mcfqspi, MCFQSPI_QDLYR_SPE);
	}
	wait_event(mcfqspi->waitq, !mcfqspi_qdlyr_spe(mcfqspi));
	if (rxbuf) {
		mcfqspi_wr_qar(mcfqspi, MCFQSPI_QAR_RXBUF + offset);
		for (i = 0; i < n; ++i)
			*rxbuf++ = mcfqspi_rd_qdr(mcfqspi);
	}
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 438 100.00% 1 100.00%
Total 438 100.00% 1 100.00%



static void mcfqspi_set_cs(struct spi_device *spi, bool enable)
{
	struct mcfqspi *mcfqspi = spi_master_get_devdata(spi->master);
	bool cs_high = spi->mode & SPI_CS_HIGH;

	if (enable)
		mcfqspi_cs_select(mcfqspi, spi->chip_select, cs_high);
	else
		mcfqspi_cs_deselect(mcfqspi, spi->chip_select, cs_high);
}

Contributors
Person Tokens Prop Commits CommitProp
axel lin axel lin 45 72.58% 1 33.33%
steven king steven king 17 27.42% 2 66.67%
Total 62 100.00% 3 100.00%



static int mcfqspi_transfer_one(struct spi_master *master,
				struct spi_device *spi,
				struct spi_transfer *t)
{
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);
	u16 qmr = MCFQSPI_QMR_MSTR;

	qmr |= t->bits_per_word << 10;
	if (spi->mode & SPI_CPHA)
		qmr |= MCFQSPI_QMR_CPHA;
	if (spi->mode & SPI_CPOL)
		qmr |= MCFQSPI_QMR_CPOL;
	qmr |= mcfqspi_qmr_baud(t->speed_hz);
	mcfqspi_wr_qmr(mcfqspi, qmr);

	mcfqspi_wr_qir(mcfqspi, MCFQSPI_QIR_SPIFE);
	if (t->bits_per_word == 8)
		mcfqspi_transfer_msg8(mcfqspi, t->len, t->tx_buf, t->rx_buf);
	else
		mcfqspi_transfer_msg16(mcfqspi, t->len / 2, t->tx_buf,
				       t->rx_buf);
	mcfqspi_wr_qir(mcfqspi, 0);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 127 86.99% 2 66.67%
axel lin axel lin 19 13.01% 1 33.33%
Total 146 100.00% 3 100.00%



static int mcfqspi_setup(struct spi_device *spi)
{
	mcfqspi_cs_deselect(spi_master_get_devdata(spi->master),
			    spi->chip_select, spi->mode & SPI_CS_HIGH);

	dev_dbg(&spi->dev,
			"bits per word %d, chip select %d, speed %d KHz\n",
			spi->bits_per_word, spi->chip_select,
			(MCFQSPI_BUSCLK / mcfqspi_qmr_baud(spi->max_speed_hz))
			/ 1000);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 65 100.00% 2 100.00%
Total 65 100.00% 2 100.00%



static int mcfqspi_probe(struct platform_device *pdev)
{
	struct spi_master *master;
	struct mcfqspi *mcfqspi;
	struct resource *res;
	struct mcfqspi_platform_data *pdata;
	int status;

	pdata = dev_get_platdata(&pdev->dev);
	if (!pdata) {
		dev_dbg(&pdev->dev, "platform data is missing\n");
		return -ENOENT;
	}

	if (!pdata->cs_control) {
		dev_dbg(&pdev->dev, "pdata->cs_control is NULL\n");
		return -EINVAL;
	}

	master = spi_alloc_master(&pdev->dev, sizeof(*mcfqspi));
	if (master == NULL) {
		dev_dbg(&pdev->dev, "spi_alloc_master failed\n");
		return -ENOMEM;
	}

	mcfqspi = spi_master_get_devdata(master);

	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
	mcfqspi->iobase = devm_ioremap_resource(&pdev->dev, res);
	if (IS_ERR(mcfqspi->iobase)) {
		status = PTR_ERR(mcfqspi->iobase);
		goto fail0;
	}

	mcfqspi->irq = platform_get_irq(pdev, 0);
	if (mcfqspi->irq < 0) {
		dev_dbg(&pdev->dev, "platform_get_irq failed\n");
		status = -ENXIO;
		goto fail0;
	}

	status = devm_request_irq(&pdev->dev, mcfqspi->irq, mcfqspi_irq_handler,
				0, pdev->name, mcfqspi);
	if (status) {
		dev_dbg(&pdev->dev, "request_irq failed\n");
		goto fail0;
	}

	mcfqspi->clk = devm_clk_get(&pdev->dev, "qspi_clk");
	if (IS_ERR(mcfqspi->clk)) {
		dev_dbg(&pdev->dev, "clk_get failed\n");
		status = PTR_ERR(mcfqspi->clk);
		goto fail0;
	}
	clk_enable(mcfqspi->clk);

	master->bus_num = pdata->bus_num;
	master->num_chipselect = pdata->num_chipselect;

	mcfqspi->cs_control = pdata->cs_control;
	status = mcfqspi_cs_setup(mcfqspi);
	if (status) {
		dev_dbg(&pdev->dev, "error initializing cs_control\n");
		goto fail1;
	}

	init_waitqueue_head(&mcfqspi->waitq);

	master->mode_bits = SPI_CS_HIGH | SPI_CPOL | SPI_CPHA;
	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(8, 16);
	master->setup = mcfqspi_setup;
	master->set_cs = mcfqspi_set_cs;
	master->transfer_one = mcfqspi_transfer_one;
	master->auto_runtime_pm = true;

	platform_set_drvdata(pdev, master);
	pm_runtime_enable(&pdev->dev);

	status = devm_spi_register_master(&pdev->dev, master);
	if (status) {
		dev_dbg(&pdev->dev, "spi_register_master failed\n");
		goto fail2;
	}

	dev_info(&pdev->dev, "Coldfire QSPI bus driver\n");

	return 0;

fail2:
	pm_runtime_disable(&pdev->dev);
	mcfqspi_cs_teardown(mcfqspi);
fail1:
	clk_disable(mcfqspi->clk);
fail0:
	spi_master_put(master);

	dev_dbg(&pdev->dev, "Coldfire QSPI probe failed\n");

	return status;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 398 76.10% 2 18.18%
jingoo han jingoo han 37 7.07% 2 18.18%
axel lin axel lin 31 5.93% 2 18.18%
wei yongjun wei yongjun 27 5.16% 1 9.09%
wolfram sang wolfram sang 16 3.06% 1 9.09%
stephen warren stephen warren 11 2.10% 1 9.09%
mark brown mark brown 2 0.38% 1 9.09%
yong zhang yong zhang 1 0.19% 1 9.09%
Total 523 100.00% 11 100.00%



static int mcfqspi_remove(struct platform_device *pdev)
{
	struct spi_master *master = platform_get_drvdata(pdev);
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);

	pm_runtime_disable(&pdev->dev);
	/* disable the hardware (set the baud rate to 0) */
	mcfqspi_wr_qmr(mcfqspi, MCFQSPI_QMR_MSTR);

	mcfqspi_cs_teardown(mcfqspi);
	clk_disable(mcfqspi->clk);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 60 96.77% 2 66.67%
axel lin axel lin 2 3.23% 1 33.33%
Total 62 100.00% 3 100.00%

#ifdef CONFIG_PM_SLEEP


static int mcfqspi_suspend(struct device *dev)
{
	struct spi_master *master = dev_get_drvdata(dev);
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);
	int ret;

	ret = spi_master_suspend(master);
	if (ret)
		return ret;

	clk_disable(mcfqspi->clk);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 46 79.31% 2 66.67%
axel lin axel lin 12 20.69% 1 33.33%
Total 58 100.00% 3 100.00%



static int mcfqspi_resume(struct device *dev)
{
	struct spi_master *master = dev_get_drvdata(dev);
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);

	clk_enable(mcfqspi->clk);

	return spi_master_resume(master);
}
Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 40 90.91% 1 50.00%
axel lin axel lin 4 9.09% 1 50.00%
Total 44 100.00% 2 100.00%

#endif

#ifdef CONFIG_PM


static int mcfqspi_runtime_suspend(struct device *dev)
{
	struct spi_master *master = dev_get_drvdata(dev);
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);

	clk_disable(mcfqspi->clk);

	return 0;
}

Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 28 68.29% 2 50.00%
axel lin axel lin 13 31.71% 2 50.00%
Total 41 100.00% 4 100.00%



static int mcfqspi_runtime_resume(struct device *dev)
{
	struct spi_master *master = dev_get_drvdata(dev);
	struct mcfqspi *mcfqspi = spi_master_get_devdata(master);

	clk_enable(mcfqspi->clk);

	return 0;
}
Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 28 68.29% 2 50.00%
axel lin axel lin 13 31.71% 2 50.00%
Total 41 100.00% 4 100.00%

#endif


static const struct dev_pm_ops mcfqspi_pm = {
	SET_SYSTEM_SLEEP_PM_OPS(mcfqspi_suspend, mcfqspi_resume)
	SET_RUNTIME_PM_OPS(mcfqspi_runtime_suspend, mcfqspi_runtime_resume,
			NULL)
};


static struct platform_driver mcfqspi_driver = {
	.driver.name	= DRIVER_NAME,
	.driver.owner	= THIS_MODULE,
	.driver.pm	= &mcfqspi_pm,
	.probe		= mcfqspi_probe,
	.remove		= mcfqspi_remove,
};

module_platform_driver(mcfqspi_driver);

MODULE_AUTHOR("Steven King <sfking@fdwdc.com>");
MODULE_DESCRIPTION("Coldfire QSPI Controller Driver");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:" DRIVER_NAME);
Overall Contributors
Person Tokens Prop Commits CommitProp
steven king steven king 2374 90.68% 3 15.00%
axel lin axel lin 139 5.31% 6 30.00%
jingoo han jingoo han 37 1.41% 2 10.00%
wei yongjun wei yongjun 27 1.03% 1 5.00%
wolfram sang wolfram sang 16 0.61% 1 5.00%
stephen warren stephen warren 11 0.42% 1 5.00%
grant likely grant likely 6 0.23% 1 5.00%
greg ungerer greg ungerer 3 0.11% 1 5.00%
mark brown mark brown 2 0.08% 1 5.00%
jarkko nikula jarkko nikula 1 0.04% 1 5.00%
rafael j. wysocki rafael j. wysocki 1 0.04% 1 5.00%
yong zhang yong zhang 1 0.04% 1 5.00%
Total 2618 100.00% 20 100.00%
  Directory: drivers/spi

Information contained on this website is for historical information purposes only and does not indicate or represent copyright ownership.
	Person	Tokens	Prop	Commits	CommitProp
steven king	steven king	25	100.00%	1	100.00%
	Total	25	100.00%	1	100.00%
cregit-Linux how code gets into the kernel

Release 4.7 drivers/spi/spi-coldfire-qspi.c

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Contributors

Overall Contributors
