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Diffstat (limited to 'target/linux/ipq806x/patches-4.4/709-spi-qup-Fix-fifo-and-dma-support-for-IPQ806x.patch')
-rw-r--r--target/linux/ipq806x/patches-4.4/709-spi-qup-Fix-fifo-and-dma-support-for-IPQ806x.patch129
1 files changed, 0 insertions, 129 deletions
diff --git a/target/linux/ipq806x/patches-4.4/709-spi-qup-Fix-fifo-and-dma-support-for-IPQ806x.patch b/target/linux/ipq806x/patches-4.4/709-spi-qup-Fix-fifo-and-dma-support-for-IPQ806x.patch
deleted file mode 100644
index fa78a0aeda..0000000000
--- a/target/linux/ipq806x/patches-4.4/709-spi-qup-Fix-fifo-and-dma-support-for-IPQ806x.patch
+++ /dev/null
@@ -1,129 +0,0 @@
-From 16d2871830ff3fe12a6bff582549a9264adff278 Mon Sep 17 00:00:00 2001
-From: Ram Chandra Jangir <rjangi@codeaurora.org>
-Date: Tue, 10 May 2016 20:19:31 +0530
-Subject: [PATCH] spi: qup: Fix fifo and dma support for IPQ806x
-
-Signed-off-by: Ram Chandra Jangir <rjangi@codeaurora.org>
----
- drivers/spi/spi-qup.c | 54 +++++++++++++++++++++++++++++++++++++++++++++++++--
- 1 file changed, 52 insertions(+), 2 deletions(-)
-
---- a/drivers/spi/spi-qup.c
-+++ b/drivers/spi/spi-qup.c
-@@ -24,6 +24,7 @@
- #include <linux/spi/spi.h>
- #include <linux/dmaengine.h>
- #include <linux/dma-mapping.h>
-+#include <linux/gpio.h>
-
- #define QUP_CONFIG 0x0000
- #define QUP_STATE 0x0004
-@@ -152,6 +153,7 @@ struct spi_qup {
- int use_dma;
- struct dma_slave_config rx_conf;
- struct dma_slave_config tx_conf;
-+ int mode;
- };
-
-
-@@ -370,7 +372,8 @@ static int spi_qup_do_pio(struct spi_mas
- return ret;
- }
-
-- spi_qup_fifo_write(qup, xfer);
-+ if (qup->mode == QUP_IO_M_MODE_FIFO)
-+ spi_qup_fifo_write(qup, xfer);
-
- return 0;
- }
-@@ -448,6 +451,7 @@ spi_qup_get_mode(struct spi_master *mast
- {
- struct spi_qup *qup = spi_master_get_devdata(master);
- u32 mode;
-+ size_t dma_align = dma_get_cache_alignment();
-
- qup->w_size = 4;
-
-@@ -458,6 +462,14 @@ spi_qup_get_mode(struct spi_master *mast
-
- qup->n_words = xfer->len / qup->w_size;
-
-+ if (!IS_ERR_OR_NULL(master->dma_rx) &&
-+ IS_ALIGNED((size_t)xfer->tx_buf, dma_align) &&
-+ IS_ALIGNED((size_t)xfer->rx_buf, dma_align) &&
-+ !is_vmalloc_addr(xfer->tx_buf) &&
-+ !is_vmalloc_addr(xfer->rx_buf) &&
-+ (xfer->len > 3*qup->in_blk_sz))
-+ qup->use_dma = 1;
-+
- if (qup->n_words <= (qup->in_fifo_sz / sizeof(u32)))
- mode = QUP_IO_M_MODE_FIFO;
- else
-@@ -491,7 +503,7 @@ static int spi_qup_io_config(struct spi_
- return -EIO;
- }
-
-- mode = spi_qup_get_mode(spi->master, xfer);
-+ controller->mode = mode = spi_qup_get_mode(spi->master, xfer);
- n_words = controller->n_words;
-
- if (mode == QUP_IO_M_MODE_FIFO) {
-@@ -500,6 +512,7 @@ static int spi_qup_io_config(struct spi_
- /* must be zero for FIFO */
- writel_relaxed(0, controller->base + QUP_MX_INPUT_CNT);
- writel_relaxed(0, controller->base + QUP_MX_OUTPUT_CNT);
-+ controller->use_dma = 0;
- } else if (!controller->use_dma) {
- writel_relaxed(n_words, controller->base + QUP_MX_INPUT_CNT);
- writel_relaxed(n_words, controller->base + QUP_MX_OUTPUT_CNT);
-@@ -750,6 +763,38 @@ err_tx:
- return ret;
- }
-
-+static void spi_qup_set_cs(struct spi_device *spi, bool val)
-+{
-+ struct spi_qup *controller;
-+ u32 spi_ioc;
-+ u32 spi_ioc_orig;
-+
-+ controller = spi_master_get_devdata(spi->master);
-+ spi_ioc = readl_relaxed(controller->base + SPI_IO_CONTROL);
-+ spi_ioc_orig = spi_ioc;
-+ if (!val)
-+ spi_ioc |= SPI_IO_C_FORCE_CS;
-+ else
-+ spi_ioc &= ~SPI_IO_C_FORCE_CS;
-+
-+ if (spi_ioc != spi_ioc_orig)
-+ writel_relaxed(spi_ioc, controller->base + SPI_IO_CONTROL);
-+}
-+
-+static int spi_qup_setup(struct spi_device *spi)
-+{
-+ if (spi->cs_gpio >= 0) {
-+ if (spi->mode & SPI_CS_HIGH)
-+ gpio_set_value(spi->cs_gpio, 0);
-+ else
-+ gpio_set_value(spi->cs_gpio, 1);
-+
-+ udelay(10);
-+ }
-+
-+ return 0;
-+}
-+
- static int spi_qup_probe(struct platform_device *pdev)
- {
- struct spi_master *master;
-@@ -846,6 +891,11 @@ static int spi_qup_probe(struct platform
- if (of_device_is_compatible(dev->of_node, "qcom,spi-qup-v1.1.1"))
- controller->qup_v1 = 1;
-
-+ if (!controller->qup_v1)
-+ master->set_cs = spi_qup_set_cs;
-+ else
-+ master->setup = spi_qup_setup;
-+
- spin_lock_init(&controller->lock);
- init_completion(&controller->done);
-