From 76f267ef6c54cb4cd9c1bee6e21d09495ac2f733 Mon Sep 17 00:00:00 2001 From: Matti Laakso Date: Sun, 18 Mar 2018 17:26:24 +0200 Subject: pistachio: remove kernel 4.9 support Signed-off-by: Matti Laakso --- ...spi-img-spfi-Implement-dual-and-quad-mode.patch | 198 --------------------- 1 file changed, 198 deletions(-) delete mode 100644 target/linux/pistachio/patches-4.9/102-spi-img-spfi-Implement-dual-and-quad-mode.patch (limited to 'target/linux/pistachio/patches-4.9/102-spi-img-spfi-Implement-dual-and-quad-mode.patch') diff --git a/target/linux/pistachio/patches-4.9/102-spi-img-spfi-Implement-dual-and-quad-mode.patch b/target/linux/pistachio/patches-4.9/102-spi-img-spfi-Implement-dual-and-quad-mode.patch deleted file mode 100644 index 15a5d3c806..0000000000 --- a/target/linux/pistachio/patches-4.9/102-spi-img-spfi-Implement-dual-and-quad-mode.patch +++ /dev/null @@ -1,198 +0,0 @@ -From cd2a6af51553d38072cd31699b58d16ca6176ef5 Mon Sep 17 00:00:00 2001 -From: Ionela Voinescu -Date: Thu, 2 Feb 2017 16:46:14 +0000 -Subject: spi: img-spfi: Implement dual and quad mode - -For dual and quad modes to work the SPFI controller needs -to have information about command/address/dummy bytes in the -transaction register. This information is not relevant for -single mode, and therefore it can have any value in the -allowed range. Therefore, for any read or write transfers of less -than 8 bytes (cmd = 1 byte, addr up to 7 bytes), SPFI will be -configured, but not enabled (unless it is the last transfer in -the queue). The transfer will be enabled by the subsequent tranfer. -A pending transfer is determined by the content of the transaction -register: if command part is set and tsize is not. - -This way we ensure that for dual and quad transactions -the command request size will apear in the command/address part -of the transaction register, while the data size will be in -tsize, all data being sent/received in the same transaction (as -set up in the transaction register). - -Signed-off-by: Ionela Voinescu -Signed-off-by: Ezequiel Garcia ---- - drivers/spi/spi-img-spfi.c | 96 ++++++++++++++++++++++++++++++++++++++++------ - 1 file changed, 85 insertions(+), 11 deletions(-) - ---- a/drivers/spi/spi-img-spfi.c -+++ b/drivers/spi/spi-img-spfi.c -@@ -40,7 +40,8 @@ - #define SPFI_CONTROL_SOFT_RESET BIT(11) - #define SPFI_CONTROL_SEND_DMA BIT(10) - #define SPFI_CONTROL_GET_DMA BIT(9) --#define SPFI_CONTROL_SE BIT(8) -+#define SPFI_CONTROL_SE BIT(8) -+#define SPFI_CONTROL_TX_RX BIT(1) - #define SPFI_CONTROL_TMODE_SHIFT 5 - #define SPFI_CONTROL_TMODE_MASK 0x7 - #define SPFI_CONTROL_TMODE_SINGLE 0 -@@ -51,6 +52,10 @@ - #define SPFI_TRANSACTION 0x18 - #define SPFI_TRANSACTION_TSIZE_SHIFT 16 - #define SPFI_TRANSACTION_TSIZE_MASK 0xffff -+#define SPFI_TRANSACTION_CMD_SHIFT 13 -+#define SPFI_TRANSACTION_CMD_MASK 0x7 -+#define SPFI_TRANSACTION_ADDR_SHIFT 10 -+#define SPFI_TRANSACTION_ADDR_MASK 0x7 - - #define SPFI_PORT_STATE 0x1c - #define SPFI_PORT_STATE_DEV_SEL_SHIFT 20 -@@ -87,6 +92,7 @@ - */ - #define SPFI_32BIT_FIFO_SIZE 64 - #define SPFI_8BIT_FIFO_SIZE 16 -+#define SPFI_DATA_REQUEST_MAX_SIZE 8 - - struct img_spfi { - struct device *dev; -@@ -103,6 +109,8 @@ struct img_spfi { - struct dma_chan *tx_ch; - bool tx_dma_busy; - bool rx_dma_busy; -+ -+ bool complete; - }; - - struct img_spfi_device_data { -@@ -123,9 +131,11 @@ static inline void spfi_start(struct img - { - u32 val; - -- val = spfi_readl(spfi, SPFI_CONTROL); -- val |= SPFI_CONTROL_SPFI_EN; -- spfi_writel(spfi, val, SPFI_CONTROL); -+ if (spfi->complete) { -+ val = spfi_readl(spfi, SPFI_CONTROL); -+ val |= SPFI_CONTROL_SPFI_EN; -+ spfi_writel(spfi, val, SPFI_CONTROL); -+ } - } - - static inline void spfi_reset(struct img_spfi *spfi) -@@ -138,12 +148,21 @@ static int spfi_wait_all_done(struct img - { - unsigned long timeout = jiffies + msecs_to_jiffies(50); - -+ if (!(spfi->complete)) -+ return 0; -+ - while (time_before(jiffies, timeout)) { - u32 status = spfi_readl(spfi, SPFI_INTERRUPT_STATUS); - - if (status & SPFI_INTERRUPT_ALLDONETRIG) { - spfi_writel(spfi, SPFI_INTERRUPT_ALLDONETRIG, - SPFI_INTERRUPT_CLEAR); -+ /* -+ * Disable SPFI for it not to interfere with -+ * pending transactions -+ */ -+ spfi_writel(spfi, spfi_readl(spfi, SPFI_CONTROL) -+ & ~SPFI_CONTROL_SPFI_EN, SPFI_CONTROL); - return 0; - } - cpu_relax(); -@@ -494,9 +513,32 @@ static void img_spfi_config(struct spi_m - struct spi_transfer *xfer) - { - struct img_spfi *spfi = spi_master_get_devdata(spi->master); -- u32 val, div; -+ u32 val, div, transact; -+ bool is_pending; - - /* -+ * For read or write transfers of less than 8 bytes (cmd = 1 byte, -+ * addr up to 7 bytes), SPFI will be configured, but not enabled -+ * (unless it is the last transfer in the queue).The transfer will -+ * be enabled by the subsequent transfer. -+ * A pending transfer is determined by the content of the -+ * transaction register: if command part is set and tsize -+ * is not -+ */ -+ transact = spfi_readl(spfi, SPFI_TRANSACTION); -+ is_pending = ((transact >> SPFI_TRANSACTION_CMD_SHIFT) & -+ SPFI_TRANSACTION_CMD_MASK) && -+ (!((transact >> SPFI_TRANSACTION_TSIZE_SHIFT) & -+ SPFI_TRANSACTION_TSIZE_MASK)); -+ -+ /* If there are no pending transactions it's OK to soft reset */ -+ if (!is_pending) { -+ /* Start the transaction from a known (reset) state */ -+ spfi_reset(spfi); -+ } -+ -+ /* -+ * Before anything else, set up parameters. - * output = spfi_clk * (BITCLK / 512), where BITCLK must be a - * power of 2 up to 128 - */ -@@ -509,20 +551,52 @@ static void img_spfi_config(struct spi_m - val |= div << SPFI_DEVICE_PARAMETER_BITCLK_SHIFT; - spfi_writel(spfi, val, SPFI_DEVICE_PARAMETER(spi->chip_select)); - -- spfi_writel(spfi, xfer->len << SPFI_TRANSACTION_TSIZE_SHIFT, -- SPFI_TRANSACTION); -+ if (!list_is_last(&xfer->transfer_list, &master->cur_msg->transfers) && -+ /* -+ * For duplex mode (both the tx and rx buffers are !NULL) the -+ * CMD, ADDR, and DUMMY byte parts of the transaction register -+ * should always be 0 and therefore the pending transfer -+ * technique cannot be used. -+ */ -+ (xfer->tx_buf) && (!xfer->rx_buf) && -+ (xfer->len <= SPFI_DATA_REQUEST_MAX_SIZE) && !is_pending) { -+ transact = (1 & SPFI_TRANSACTION_CMD_MASK) << -+ SPFI_TRANSACTION_CMD_SHIFT; -+ transact |= ((xfer->len - 1) & SPFI_TRANSACTION_ADDR_MASK) << -+ SPFI_TRANSACTION_ADDR_SHIFT; -+ spfi->complete = false; -+ } else { -+ spfi->complete = true; -+ if (is_pending) { -+ /* Keep setup from pending transfer */ -+ transact |= ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) << -+ SPFI_TRANSACTION_TSIZE_SHIFT); -+ } else { -+ transact = ((xfer->len & SPFI_TRANSACTION_TSIZE_MASK) << -+ SPFI_TRANSACTION_TSIZE_SHIFT); -+ } -+ } -+ spfi_writel(spfi, transact, SPFI_TRANSACTION); - - val = spfi_readl(spfi, SPFI_CONTROL); - val &= ~(SPFI_CONTROL_SEND_DMA | SPFI_CONTROL_GET_DMA); -- if (xfer->tx_buf) -+ /* -+ * We set up send DMA for pending transfers also, as -+ * those are always send transfers -+ */ -+ if ((xfer->tx_buf) || is_pending) - val |= SPFI_CONTROL_SEND_DMA; -- if (xfer->rx_buf) -+ if (xfer->tx_buf) -+ val |= SPFI_CONTROL_TX_RX; -+ if (xfer->rx_buf) { - val |= SPFI_CONTROL_GET_DMA; -+ val &= ~SPFI_CONTROL_TX_RX; -+ } - val &= ~(SPFI_CONTROL_TMODE_MASK << SPFI_CONTROL_TMODE_SHIFT); -- if (xfer->tx_nbits == SPI_NBITS_DUAL && -+ if (xfer->tx_nbits == SPI_NBITS_DUAL || - xfer->rx_nbits == SPI_NBITS_DUAL) - val |= SPFI_CONTROL_TMODE_DUAL << SPFI_CONTROL_TMODE_SHIFT; -- else if (xfer->tx_nbits == SPI_NBITS_QUAD && -+ else if (xfer->tx_nbits == SPI_NBITS_QUAD || - xfer->rx_nbits == SPI_NBITS_QUAD) - val |= SPFI_CONTROL_TMODE_QUAD << SPFI_CONTROL_TMODE_SHIFT; - val |= SPFI_CONTROL_SE; -- cgit v1.2.3