ipq806x: Add support for IPQ806x chip family

Patches are generated using the "format-patch" command from the
following location:
*https://www.codeaurora.org/cgit/quic/kernel/galak-msm/log/?h=apq_ipq_base
*rev=0771849495b4128cac2faf7d49c85c729fc48b20
Patches numbered 76/77/102/103 have already been integrated in 3.14.12,
so they're not in this list.

All these patches are either integrated are pending integration into
kernel.org, therefore these patches should go away once the kernel
gets upgraded to 3.16.

Support is currently limited to AP148 board but can be extended to other
platforms in the future.

These changes do not cover ethernet connectivity.

Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>

SVN-Revision: 42334

1 files changed, 167 insertions, 0 deletions

diff --git a/target/linux/ipq806x/patches/0073-spi-qup-Get-rid-of-using-struct-spi_qup_device.patch b/target/linux/ipq806x/patches/0073-spi-qup-Get-rid-of-using-struct-spi_qup_device.patch
new file mode 100644
index 0000000000..69b4609a5f
--- /dev/null
+++ b/target/linux/ipq806x/patches/0073-spi-qup-Get-rid-of-using-struct-spi_qup_device.patch
@@ -0,0 +1,167 @@
+From 3027505ab8c8cb17291e53bca1d7bd770539d468 Mon Sep 17 00:00:00 2001
+From: Axel Lin <axel.lin@ingics.com>
+Date: Mon, 24 Feb 2014 23:07:36 +0800
+Subject: [PATCH 073/182] spi: qup: Get rid of using struct spi_qup_device
+
+Current code uses struct spi_qup_device to store spi->mode and spi->chip_select
+settings. We can get these settings in spi_qup_transfer_one and spi_qup_set_cs
+without using struct spi_qup_device. Refactor the code a bit to remove
+spi_qup_setup(), spi_qup_cleanup(), and struct spi_qup_device.
+
+Signed-off-by: Axel Lin <axel.lin@ingics.com>
+Tested-by: Ivan T. Ivanov <iivanov@mm-sol.com>
+Signed-off-by: Mark Brown <broonie@linaro.org>
+---
+ drivers/spi/spi-qup.c |   61 ++++++++-----------------------------------------
+ 1 file changed, 9 insertions(+), 52 deletions(-)
+
+diff --git a/drivers/spi/spi-qup.c b/drivers/spi/spi-qup.c
+index 203f0d4..b032e88 100644
+--- a/drivers/spi/spi-qup.c
++++ b/drivers/spi/spi-qup.c
+@@ -123,11 +123,6 @@
+ #define SPI_DELAY_THRESHOLD		1
+ #define SPI_DELAY_RETRY			10
+ 
+-struct spi_qup_device {
+-	int select;
+-	u16 mode;
+-};
+-
+ struct spi_qup {
+ 	void __iomem		*base;
+ 	struct device		*dev;
+@@ -338,14 +333,13 @@ static irqreturn_t spi_qup_qup_irq(int irq, void *dev_id)
+ 
+ 
+ /* set clock freq ... bits per word */
+-static int spi_qup_io_config(struct spi_qup *controller,
+-			   struct spi_qup_device *chip,
+-			   struct spi_transfer *xfer)
++static int spi_qup_io_config(struct spi_device *spi, struct spi_transfer *xfer)
+ {
++	struct spi_qup *controller = spi_master_get_devdata(spi->master);
+ 	u32 config, iomode, mode;
+ 	int ret, n_words, w_size;
+ 
+-	if (chip->mode & SPI_LOOP && xfer->len > controller->in_fifo_sz) {
++	if (spi->mode & SPI_LOOP && xfer->len > controller->in_fifo_sz) {
+ 		dev_err(controller->dev, "too big size for loopback %d > %d\n",
+ 			xfer->len, controller->in_fifo_sz);
+ 		return -EIO;
+@@ -399,12 +393,12 @@ static int spi_qup_io_config(struct spi_qup *controller,
+ 
+ 	config = readl_relaxed(controller->base + SPI_CONFIG);
+ 
+-	if (chip->mode & SPI_LOOP)
++	if (spi->mode & SPI_LOOP)
+ 		config |= SPI_CONFIG_LOOPBACK;
+ 	else
+ 		config &= ~SPI_CONFIG_LOOPBACK;
+ 
+-	if (chip->mode & SPI_CPHA)
++	if (spi->mode & SPI_CPHA)
+ 		config &= ~SPI_CONFIG_INPUT_FIRST;
+ 	else
+ 		config |= SPI_CONFIG_INPUT_FIRST;
+@@ -413,7 +407,7 @@ static int spi_qup_io_config(struct spi_qup *controller,
+ 	 * HS_MODE improves signal stability for spi-clk high rates,
+ 	 * but is invalid in loop back mode.
+ 	 */
+-	if ((xfer->speed_hz >= SPI_HS_MIN_RATE) && !(chip->mode & SPI_LOOP))
++	if ((xfer->speed_hz >= SPI_HS_MIN_RATE) && !(spi->mode & SPI_LOOP))
+ 		config |= SPI_CONFIG_HS_MODE;
+ 	else
+ 		config &= ~SPI_CONFIG_HS_MODE;
+@@ -433,7 +427,6 @@ static int spi_qup_io_config(struct spi_qup *controller,
+ static void spi_qup_set_cs(struct spi_device *spi, bool enable)
+ {
+ 	struct spi_qup *controller = spi_master_get_devdata(spi->master);
+-	struct spi_qup_device *chip = spi_get_ctldata(spi);
+ 
+ 	u32 iocontol, mask;
+ 
+@@ -444,9 +437,9 @@ static void spi_qup_set_cs(struct spi_device *spi, bool enable)
+ 	iocontol |= SPI_IO_C_FORCE_CS;
+ 
+ 	iocontol &= ~SPI_IO_C_CS_SELECT_MASK;
+-	iocontol |= SPI_IO_C_CS_SELECT(chip->select);
++	iocontol |= SPI_IO_C_CS_SELECT(spi->chip_select);
+ 
+-	mask = SPI_IO_C_CS_N_POLARITY_0 << chip->select;
++	mask = SPI_IO_C_CS_N_POLARITY_0 << spi->chip_select;
+ 
+ 	if (enable)
+ 		iocontol |= mask;
+@@ -461,11 +454,10 @@ static int spi_qup_transfer_one(struct spi_master *master,
+ 			      struct spi_transfer *xfer)
+ {
+ 	struct spi_qup *controller = spi_master_get_devdata(master);
+-	struct spi_qup_device *chip = spi_get_ctldata(spi);
+ 	unsigned long timeout, flags;
+ 	int ret = -EIO;
+ 
+-	ret = spi_qup_io_config(controller, chip, xfer);
++	ret = spi_qup_io_config(spi, xfer);
+ 	if (ret)
+ 		return ret;
+ 
+@@ -511,38 +503,6 @@ exit:
+ 	return ret;
+ }
+ 
+-static int spi_qup_setup(struct spi_device *spi)
+-{
+-	struct spi_qup *controller = spi_master_get_devdata(spi->master);
+-	struct spi_qup_device *chip = spi_get_ctldata(spi);
+-
+-	if (!chip) {
+-		/* First setup */
+-		chip = kzalloc(sizeof(*chip), GFP_KERNEL);
+-		if (!chip) {
+-			dev_err(controller->dev, "no memory for chip data\n");
+-			return -ENOMEM;
+-		}
+-
+-		chip->mode = spi->mode;
+-		chip->select = spi->chip_select;
+-		spi_set_ctldata(spi, chip);
+-	}
+-
+-	return 0;
+-}
+-
+-static void spi_qup_cleanup(struct spi_device *spi)
+-{
+-	struct spi_qup_device *chip = spi_get_ctldata(spi);
+-
+-	if (!chip)
+-		return;
+-
+-	spi_set_ctldata(spi, NULL);
+-	kfree(chip);
+-}
+-
+ static int spi_qup_probe(struct platform_device *pdev)
+ {
+ 	struct spi_master *master;
+@@ -561,7 +521,6 @@ static int spi_qup_probe(struct platform_device *pdev)
+ 		return PTR_ERR(base);
+ 
+ 	irq = platform_get_irq(pdev, 0);
+-
+ 	if (irq < 0)
+ 		return irq;
+ 
+@@ -617,8 +576,6 @@ static int spi_qup_probe(struct platform_device *pdev)
+ 	master->num_chipselect = SPI_NUM_CHIPSELECTS;
+ 	master->bits_per_word_mask = SPI_BPW_RANGE_MASK(4, 32);
+ 	master->max_speed_hz = max_freq;
+-	master->setup = spi_qup_setup;
+-	master->cleanup = spi_qup_cleanup;
+ 	master->set_cs = spi_qup_set_cs;
+ 	master->transfer_one = spi_qup_transfer_one;
+ 	master->dev.of_node = pdev->dev.of_node;
+-- 
+1.7.10.4
+