diff options
author | Stefan Lippers-Hollmann <s.l-h@gmx.de> | 2018-05-18 04:50:09 +0200 |
---|---|---|
committer | John Crispin <john@phrozen.org> | 2018-05-24 17:24:31 +0200 |
commit | 63c17199888e6b7977d41a22851ee854cffc8103 (patch) | |
tree | 9ebe408f39f9408a73085f3abbb5264c79672eb2 /target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch | |
parent | 2301bbdf880b8e222008fbd350cd903fdd447d3e (diff) | |
download | upstream-63c17199888e6b7977d41a22851ee854cffc8103.tar.gz upstream-63c17199888e6b7977d41a22851ee854cffc8103.tar.bz2 upstream-63c17199888e6b7977d41a22851ee854cffc8103.zip |
ipq806x: drop linux 4.9 support
Signed-off-by: Stefan Lippers-Hollmann <s.l-h@gmx.de>
(cherry picked from commit 2819732219904a81205abe0fa3fbe9c06884f119)
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch')
-rw-r--r-- | target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch | 268 |
1 files changed, 0 insertions, 268 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch b/target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch deleted file mode 100644 index 39a1aecab1..0000000000 --- a/target/linux/ipq806x/patches-4.9/0011-spi-qup-allow-block-mode-to-generate-multiple-transa.patch +++ /dev/null @@ -1,268 +0,0 @@ -From 6858a6a75f1ed364764afba938d77bbb57f80559 Mon Sep 17 00:00:00 2001 -From: Matthew McClintock <mmcclint@codeaurora.org> -Date: Tue, 26 Apr 2016 15:46:24 -0500 -Subject: [PATCH 11/69] spi: qup: allow block mode to generate multiple - transactions - -This let's you write more to the SPI bus than 64K-1 which is important -if the block size of a SPI device is >= 64K or some other device wants -to something larger. - -This has the benefit of completly removing spi_message from the spi-qup -transactions - -Signed-off-by: Matthew McClintock <mmcclint@codeaurora.org> ---- - drivers/spi/spi-qup.c | 120 +++++++++++++++++++++++++++++++------------------- - 1 file changed, 75 insertions(+), 45 deletions(-) - ---- a/drivers/spi/spi-qup.c -+++ b/drivers/spi/spi-qup.c -@@ -120,7 +120,7 @@ - - #define SPI_NUM_CHIPSELECTS 4 - --#define SPI_MAX_DMA_XFER (SZ_64K - 64) -+#define SPI_MAX_XFER (SZ_64K - 64) - - /* high speed mode is when bus rate is greater then 26MHz */ - #define SPI_HS_MIN_RATE 26000000 -@@ -150,6 +150,8 @@ struct spi_qup { - int n_words; - int tx_bytes; - int rx_bytes; -+ const u8 *tx_buf; -+ u8 *rx_buf; - int qup_v1; - - int mode; -@@ -172,6 +174,12 @@ static inline bool spi_qup_is_dma_xfer(i - return false; - } - -+/* get's the transaction size length */ -+static inline unsigned spi_qup_len(struct spi_qup *controller) -+{ -+ return controller->n_words * controller->w_size; -+} -+ - static inline bool spi_qup_is_valid_state(struct spi_qup *controller) - { - u32 opstate = readl_relaxed(controller->base + QUP_STATE); -@@ -224,10 +232,9 @@ static int spi_qup_set_state(struct spi_ - return 0; - } - --static void spi_qup_read_from_fifo(struct spi_qup *controller, -- struct spi_transfer *xfer, u32 num_words) -+static void spi_qup_read_from_fifo(struct spi_qup *controller, u32 num_words) - { -- u8 *rx_buf = xfer->rx_buf; -+ u8 *rx_buf = controller->rx_buf; - int i, shift, num_bytes; - u32 word; - -@@ -235,7 +242,7 @@ static void spi_qup_read_from_fifo(struc - - word = readl_relaxed(controller->base + QUP_INPUT_FIFO); - -- num_bytes = min_t(int, xfer->len - controller->rx_bytes, -+ num_bytes = min_t(int, spi_qup_len(controller) - controller->rx_bytes, - controller->w_size); - - if (!rx_buf) { -@@ -257,13 +264,12 @@ static void spi_qup_read_from_fifo(struc - } - } - --static void spi_qup_read(struct spi_qup *controller, -- struct spi_transfer *xfer) -+static void spi_qup_read(struct spi_qup *controller) - { - u32 remainder, words_per_block, num_words; - bool is_block_mode = controller->mode == QUP_IO_M_MODE_BLOCK; - -- remainder = DIV_ROUND_UP(xfer->len - controller->rx_bytes, -+ remainder = DIV_ROUND_UP(spi_qup_len(controller) - controller->rx_bytes, - controller->w_size); - words_per_block = controller->in_blk_sz >> 2; - -@@ -284,7 +290,7 @@ static void spi_qup_read(struct spi_qup - } - - /* read up to the maximum transfer size available */ -- spi_qup_read_from_fifo(controller, xfer, num_words); -+ spi_qup_read_from_fifo(controller, num_words); - - remainder -= num_words; - -@@ -306,17 +312,16 @@ static void spi_qup_read(struct spi_qup - - } - --static void spi_qup_write_to_fifo(struct spi_qup *controller, -- struct spi_transfer *xfer, u32 num_words) -+static void spi_qup_write_to_fifo(struct spi_qup *controller, u32 num_words) - { -- const u8 *tx_buf = xfer->tx_buf; -+ const u8 *tx_buf = controller->tx_buf; - int i, num_bytes; - u32 word, data; - - for (; num_words; num_words--) { - word = 0; - -- num_bytes = min_t(int, xfer->len - controller->tx_bytes, -+ num_bytes = min_t(int, spi_qup_len(controller) - controller->tx_bytes, - controller->w_size); - if (tx_buf) - for (i = 0; i < num_bytes; i++) { -@@ -337,13 +342,12 @@ static void spi_qup_dma_done(void *data) - complete(done); - } - --static void spi_qup_write(struct spi_qup *controller, -- struct spi_transfer *xfer) -+static void spi_qup_write(struct spi_qup *controller) - { - bool is_block_mode = controller->mode == QUP_IO_M_MODE_BLOCK; - u32 remainder, words_per_block, num_words; - -- remainder = DIV_ROUND_UP(xfer->len - controller->tx_bytes, -+ remainder = DIV_ROUND_UP(spi_qup_len(controller) - controller->tx_bytes, - controller->w_size); - words_per_block = controller->out_blk_sz >> 2; - -@@ -363,7 +367,7 @@ static void spi_qup_write(struct spi_qup - num_words = 1; - } - -- spi_qup_write_to_fifo(controller, xfer, num_words); -+ spi_qup_write_to_fifo(controller, num_words); - - remainder -= num_words; - -@@ -629,35 +633,61 @@ static int spi_qup_do_pio(struct spi_dev - { - struct spi_master *master = spi->master; - struct spi_qup *qup = spi_master_get_devdata(master); -- int ret; -+ int ret, n_words, iterations, offset = 0; - -- ret = spi_qup_io_config(spi, xfer); -- if (ret) -- return ret; -+ n_words = qup->n_words; -+ iterations = n_words / SPI_MAX_XFER; /* round down */ - -- ret = spi_qup_set_state(qup, QUP_STATE_RUN); -- if (ret) { -- dev_warn(qup->dev, "cannot set RUN state\n"); -- return ret; -- } -+ qup->rx_buf = xfer->rx_buf; -+ qup->tx_buf = xfer->tx_buf; - -- ret = spi_qup_set_state(qup, QUP_STATE_PAUSE); -- if (ret) { -- dev_warn(qup->dev, "cannot set PAUSE state\n"); -- return ret; -- } -+ do { -+ if (iterations) -+ qup->n_words = SPI_MAX_XFER; -+ else -+ qup->n_words = n_words % SPI_MAX_XFER; -+ -+ if (qup->tx_buf && offset) -+ qup->tx_buf = xfer->tx_buf + offset * SPI_MAX_XFER; -+ -+ if (qup->rx_buf && offset) -+ qup->rx_buf = xfer->rx_buf + offset * SPI_MAX_XFER; -+ -+ /* if the transaction is small enough, we need -+ * to fallback to FIFO mode */ -+ if (qup->n_words <= (qup->in_fifo_sz / sizeof(u32))) -+ qup->mode = QUP_IO_M_MODE_FIFO; - -- if (qup->mode == QUP_IO_M_MODE_FIFO) -- spi_qup_write(qup, xfer); -+ ret = spi_qup_io_config(spi, xfer); -+ if (ret) -+ return ret; - -- ret = spi_qup_set_state(qup, QUP_STATE_RUN); -- if (ret) { -- dev_warn(qup->dev, "cannot set RUN state\n"); -- return ret; -- } -+ ret = spi_qup_set_state(qup, QUP_STATE_RUN); -+ if (ret) { -+ dev_warn(qup->dev, "cannot set RUN state\n"); -+ return ret; -+ } - -- if (!wait_for_completion_timeout(&qup->done, timeout)) -- return -ETIMEDOUT; -+ ret = spi_qup_set_state(qup, QUP_STATE_PAUSE); -+ if (ret) { -+ dev_warn(qup->dev, "cannot set PAUSE state\n"); -+ return ret; -+ } -+ -+ if (qup->mode == QUP_IO_M_MODE_FIFO) -+ spi_qup_write(qup); -+ -+ ret = spi_qup_set_state(qup, QUP_STATE_RUN); -+ if (ret) { -+ dev_warn(qup->dev, "cannot set RUN state\n"); -+ return ret; -+ } -+ -+ if (!wait_for_completion_timeout(&qup->done, timeout)) -+ return -ETIMEDOUT; -+ -+ offset++; -+ } while (iterations--); - - return 0; - } -@@ -722,17 +752,17 @@ static irqreturn_t spi_qup_qup_irq(int i - complete(&controller->dma_tx_done); - } else { - if (opflags & QUP_OP_IN_SERVICE_FLAG) -- spi_qup_read(controller, xfer); -+ spi_qup_read(controller); - - if (opflags & QUP_OP_OUT_SERVICE_FLAG) -- spi_qup_write(controller, xfer); -+ spi_qup_write(controller); - } - - /* re-read opflags as flags may have changed due to actions above */ - if (opflags & QUP_OP_OUT_SERVICE_FLAG) - opflags = readl_relaxed(controller->base + QUP_OPERATIONAL); - -- if ((controller->rx_bytes == xfer->len && -+ if ((controller->rx_bytes == spi_qup_len(controller) && - (opflags & QUP_OP_MAX_INPUT_DONE_FLAG)) || error) - done = true; - -@@ -794,7 +824,7 @@ static int spi_qup_transfer_one(struct s - return ret; - - timeout = DIV_ROUND_UP(xfer->speed_hz, MSEC_PER_SEC); -- timeout = DIV_ROUND_UP(xfer->len * 8, timeout); -+ timeout = DIV_ROUND_UP(min_t(unsigned long, SPI_MAX_XFER, xfer->len) * 8, timeout); - timeout = 100 * msecs_to_jiffies(timeout); - - if (spi_qup_is_dma_xfer(controller->mode)) -@@ -983,7 +1013,7 @@ static int spi_qup_probe(struct platform - master->dev.of_node = pdev->dev.of_node; - master->auto_runtime_pm = true; - master->dma_alignment = dma_get_cache_alignment(); -- master->max_dma_len = SPI_MAX_DMA_XFER; -+ master->max_dma_len = SPI_MAX_XFER; - - platform_set_drvdata(pdev, master); - |