From 63c17199888e6b7977d41a22851ee854cffc8103 Mon Sep 17 00:00:00 2001 From: Stefan Lippers-Hollmann Date: Fri, 18 May 2018 04:50:09 +0200 Subject: ipq806x: drop linux 4.9 support Signed-off-by: Stefan Lippers-Hollmann (cherry picked from commit 2819732219904a81205abe0fa3fbe9c06884f119) --- ...05-spi-qup-Fix-DMA-mode-to-work-correctly.patch | 219 --------------------- 1 file changed, 219 deletions(-) delete mode 100644 target/linux/ipq806x/patches-4.9/0005-spi-qup-Fix-DMA-mode-to-work-correctly.patch (limited to 'target/linux/ipq806x/patches-4.9/0005-spi-qup-Fix-DMA-mode-to-work-correctly.patch') diff --git a/target/linux/ipq806x/patches-4.9/0005-spi-qup-Fix-DMA-mode-to-work-correctly.patch b/target/linux/ipq806x/patches-4.9/0005-spi-qup-Fix-DMA-mode-to-work-correctly.patch deleted file mode 100644 index 20ab5c1..0000000 --- a/target/linux/ipq806x/patches-4.9/0005-spi-qup-Fix-DMA-mode-to-work-correctly.patch +++ /dev/null @@ -1,219 +0,0 @@ -From 1204ea49f3f7ded898d1ee202776093715a9ecf6 Mon Sep 17 00:00:00 2001 -From: Andy Gross -Date: Tue, 2 Feb 2016 17:00:53 -0600 -Subject: [PATCH 05/69] spi: qup: Fix DMA mode to work correctly - -This patch fixes a few issues with the DMA mode. The QUP needs to be -placed in the run mode before the DMA transactions are executed. The -conditions for being able to DMA vary between revisions of the QUP. -This is due to v1.1.1 using ADM DMA and later revisions using BAM. - -Signed-off-by: Andy Gross ---- - drivers/spi/spi-qup.c | 94 +++++++++++++++++++++++++++++++++------------------ - 1 file changed, 62 insertions(+), 32 deletions(-) - ---- a/drivers/spi/spi-qup.c -+++ b/drivers/spi/spi-qup.c -@@ -142,6 +142,7 @@ struct spi_qup { - - struct spi_transfer *xfer; - struct completion done; -+ struct completion dma_tx_done; - int error; - int w_size; /* bytes per SPI word */ - int n_words; -@@ -284,16 +285,16 @@ static void spi_qup_fifo_write(struct sp - - static void spi_qup_dma_done(void *data) - { -- struct spi_qup *qup = data; -+ struct completion *done = data; - -- complete(&qup->done); -+ complete(done); - } - - static int spi_qup_prep_sg(struct spi_master *master, struct spi_transfer *xfer, - enum dma_transfer_direction dir, -- dma_async_tx_callback callback) -+ dma_async_tx_callback callback, -+ void *data) - { -- struct spi_qup *qup = spi_master_get_devdata(master); - unsigned long flags = DMA_PREP_INTERRUPT | DMA_PREP_FENCE; - struct dma_async_tx_descriptor *desc; - struct scatterlist *sgl; -@@ -312,11 +313,11 @@ static int spi_qup_prep_sg(struct spi_ma - } - - desc = dmaengine_prep_slave_sg(chan, sgl, nents, dir, flags); -- if (!desc) -- return -EINVAL; -+ if (IS_ERR_OR_NULL(desc)) -+ return desc ? PTR_ERR(desc) : -EINVAL; - - desc->callback = callback; -- desc->callback_param = qup; -+ desc->callback_param = data; - - cookie = dmaengine_submit(desc); - -@@ -332,18 +333,29 @@ static void spi_qup_dma_terminate(struct - dmaengine_terminate_all(master->dma_rx); - } - --static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer) -+static int spi_qup_do_dma(struct spi_master *master, struct spi_transfer *xfer, -+unsigned long timeout) - { -+ struct spi_qup *qup = spi_master_get_devdata(master); - dma_async_tx_callback rx_done = NULL, tx_done = NULL; - int ret; - -+ /* before issuing the descriptors, set the QUP to run */ -+ ret = spi_qup_set_state(qup, QUP_STATE_RUN); -+ if (ret) { -+ dev_warn(qup->dev, "cannot set RUN state\n"); -+ return ret; -+ } -+ - if (xfer->rx_buf) - rx_done = spi_qup_dma_done; -- else if (xfer->tx_buf) -+ -+ if (xfer->tx_buf) - tx_done = spi_qup_dma_done; - - if (xfer->rx_buf) { -- ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM, rx_done); -+ ret = spi_qup_prep_sg(master, xfer, DMA_DEV_TO_MEM, rx_done, -+ &qup->done); - if (ret) - return ret; - -@@ -351,17 +363,25 @@ static int spi_qup_do_dma(struct spi_mas - } - - if (xfer->tx_buf) { -- ret = spi_qup_prep_sg(master, xfer, DMA_MEM_TO_DEV, tx_done); -+ ret = spi_qup_prep_sg(master, xfer, DMA_MEM_TO_DEV, tx_done, -+ &qup->dma_tx_done); - if (ret) - return ret; - - dma_async_issue_pending(master->dma_tx); - } - -- return 0; -+ if (xfer->rx_buf && !wait_for_completion_timeout(&qup->done, timeout)) -+ return -ETIMEDOUT; -+ -+ if (xfer->tx_buf && !wait_for_completion_timeout(&qup->dma_tx_done, timeout)) -+ ret = -ETIMEDOUT; -+ -+ return ret; - } - --static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer) -+static int spi_qup_do_pio(struct spi_master *master, struct spi_transfer *xfer, -+ unsigned long timeout) - { - struct spi_qup *qup = spi_master_get_devdata(master); - int ret; -@@ -380,6 +400,15 @@ static int spi_qup_do_pio(struct spi_mas - - spi_qup_fifo_write(qup, xfer); - -+ 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; -+ - return 0; - } - -@@ -428,7 +457,6 @@ static irqreturn_t spi_qup_qup_irq(int i - dev_warn(controller->dev, "CLK_OVER_RUN\n"); - if (spi_err & SPI_ERROR_CLK_UNDER_RUN) - dev_warn(controller->dev, "CLK_UNDER_RUN\n"); -- - error = -EIO; - } - -@@ -617,6 +645,7 @@ static int spi_qup_transfer_one(struct s - timeout = 100 * msecs_to_jiffies(timeout); - - reinit_completion(&controller->done); -+ reinit_completion(&controller->dma_tx_done); - - spin_lock_irqsave(&controller->lock, flags); - controller->xfer = xfer; -@@ -626,21 +655,13 @@ static int spi_qup_transfer_one(struct s - spin_unlock_irqrestore(&controller->lock, flags); - - if (spi_qup_is_dma_xfer(controller->mode)) -- ret = spi_qup_do_dma(master, xfer); -+ ret = spi_qup_do_dma(master, xfer, timeout); - else -- ret = spi_qup_do_pio(master, xfer); -+ ret = spi_qup_do_pio(master, xfer, timeout); - - if (ret) - goto exit; - -- if (spi_qup_set_state(controller, QUP_STATE_RUN)) { -- dev_warn(controller->dev, "cannot set EXECUTE state\n"); -- goto exit; -- } -- -- if (!wait_for_completion_timeout(&controller->done, timeout)) -- ret = -ETIMEDOUT; -- - exit: - spi_qup_set_state(controller, QUP_STATE_RESET); - spin_lock_irqsave(&controller->lock, flags); -@@ -662,15 +683,23 @@ static bool spi_qup_can_dma(struct spi_m - size_t dma_align = dma_get_cache_alignment(); - int n_words; - -- if (xfer->rx_buf && (xfer->len % qup->in_blk_sz || -- IS_ERR_OR_NULL(master->dma_rx) || -- !IS_ALIGNED((size_t)xfer->rx_buf, dma_align))) -- return false; -+ if (xfer->rx_buf) { -+ if (!IS_ALIGNED((size_t)xfer->rx_buf, dma_align) || -+ IS_ERR_OR_NULL(master->dma_rx)) -+ return false; - -- if (xfer->tx_buf && (xfer->len % qup->out_blk_sz || -- IS_ERR_OR_NULL(master->dma_tx) || -- !IS_ALIGNED((size_t)xfer->tx_buf, dma_align))) -- return false; -+ if (qup->qup_v1 && (xfer->len % qup->in_blk_sz)) -+ return false; -+ } -+ -+ if (xfer->tx_buf) { -+ if (!IS_ALIGNED((size_t)xfer->tx_buf, dma_align) || -+ IS_ERR_OR_NULL(master->dma_tx)) -+ return false; -+ -+ if (qup->qup_v1 && (xfer->len % qup->out_blk_sz)) -+ return false; -+ } - - n_words = xfer->len / DIV_ROUND_UP(xfer->bits_per_word, 8); - if (n_words <= (qup->in_fifo_sz / sizeof(u32))) -@@ -836,6 +865,7 @@ static int spi_qup_probe(struct platform - - spin_lock_init(&controller->lock); - init_completion(&controller->done); -+ init_completion(&controller->dma_tx_done); - - iomode = readl_relaxed(base + QUP_IO_M_MODES); - -- cgit v1.1