diff options
| author | John Crispin <john@openwrt.org> | 2015-10-07 12:12:35 +0000 |
|---|---|---|
| committer | John Crispin <john@openwrt.org> | 2015-10-07 12:12:35 +0000 |
| commit | 33f9165a6365d4e50c195734dbe11021db9c87af (patch) | |
| tree | 0232d91ce076bc00aa189abac85b22e3124778d5 /target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch | |
| parent | 325a69486e3258447dd684aca621460e60ff2e16 (diff) | |
| download | upstream-33f9165a6365d4e50c195734dbe11021db9c87af.tar.gz upstream-33f9165a6365d4e50c195734dbe11021db9c87af.tar.bz2 upstream-33f9165a6365d4e50c195734dbe11021db9c87af.zip | |
lantiq: spi driver fix
adds a missing wait busy. based on the UGW patch 2060..
Signed-off-by: John Crispin <blogic@openwrt.org>
SVN-Revision: 47158
Diffstat (limited to 'target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch')
| -rw-r--r-- | target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch | 42 |
1 files changed, 28 insertions, 14 deletions
diff --git a/target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch b/target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch index 124b6c2341..13a1d9a9e9 100644 --- a/target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch +++ b/target/linux/lantiq/patches-4.1/0033-SPI-MIPS-lantiq-adds-spi-xway.patch @@ -18,13 +18,13 @@ Signed-off-by: John Crispin <blogic@openwrt.org> --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig -@@ -626,6 +626,14 @@ config SPI_NUC900 +@@ -626,6 +626,14 @@ help SPI driver for Nuvoton NUC900 series ARM SoCs +config SPI_XWAY -+ tristate "Lantiq XWAY SPI controller" -+ depends on LANTIQ && SOC_TYPE_XWAY ++ tristate "Lantiq SPI controller" ++ depends on LANTIQ + select SPI_BITBANG + help + This driver supports the Lantiq SoC SPI controller in master @@ -35,14 +35,14 @@ Signed-off-by: John Crispin <blogic@openwrt.org> # --- a/drivers/spi/Makefile +++ b/drivers/spi/Makefile -@@ -90,3 +90,4 @@ obj-$(CONFIG_SPI_TXX9) += spi-txx9.o +@@ -90,3 +90,4 @@ obj-$(CONFIG_SPI_XCOMM) += spi-xcomm.o obj-$(CONFIG_SPI_XILINX) += spi-xilinx.o obj-$(CONFIG_SPI_XTENSA_XTFPGA) += spi-xtensa-xtfpga.o +obj-$(CONFIG_SPI_XWAY) += spi-xway.o --- /dev/null +++ b/drivers/spi/spi-xway.c -@@ -0,0 +1,975 @@ +@@ -0,0 +1,989 @@ +/* + * Lantiq SoC SPI controller + * @@ -184,8 +184,10 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + +#define LTQ_SPI_IRNEN_F BIT(3) /* Frame end interrupt request */ +#define LTQ_SPI_IRNEN_E BIT(2) /* Error end interrupt request */ -+#define LTQ_SPI_IRNEN_T BIT(1) /* Transmit end interrupt request */ -+#define LTQ_SPI_IRNEN_R BIT(0) /* Receive end interrupt request */ ++#define LTQ_SPI_IRNEN_T BIT(0) /* Transmit end interrupt request */ ++#define LTQ_SPI_IRNEN_R BIT(1) /* Receive end interrupt request */ ++#define LTQ_SPI_IRNEN_T_XWAY BIT(1) /* Transmit end interrupt request */ ++#define LTQ_SPI_IRNEN_R_XWAY BIT(0) /* Receive end interrupt request */ +#define LTQ_SPI_IRNEN_ALL 0xF + +struct ltq_spi { @@ -214,6 +216,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + u16 rxfs; + unsigned dma_support:1; + unsigned cfg_mode:1; ++ ++ u32 irnen_t; ++ u32 irnen_r; +}; + +static inline struct ltq_spi *ltq_spi_to_hw(struct spi_device *spi) @@ -517,6 +522,9 @@ Signed-off-by: John Crispin <blogic@openwrt.org> +{ + struct ltq_spi *hw = ltq_spi_to_hw(spi); + ++ if (ltq_spi_wait_ready(hw)) ++ dev_err(&spi->dev, "wait failed\n"); ++ + switch (cs) { + case BITBANG_CS_ACTIVE: + ltq_spi_bits_per_word_set(spi); @@ -547,8 +555,6 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + if (bits_per_word > 32) + return -EINVAL; + -+ ltq_spi_config_mode_set(hw); -+ + return 0; +} + @@ -780,17 +786,17 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + if (hw->tx) { + /* Initially fill TX FIFO with as much data as possible */ + ltq_spi_txfifo_write(hw); -+ irq_flags |= LTQ_SPI_IRNEN_T; ++ irq_flags |= hw->irnen_t; + + /* Always enable RX interrupt in Full Duplex mode */ + if (hw->rx) -+ irq_flags |= LTQ_SPI_IRNEN_R; ++ irq_flags |= hw->irnen_r; + } else if (hw->rx) { + /* Start RX clock */ + ltq_spi_rxreq_set(hw); + + /* Enable RX interrupt to receive data from RX FIFOs */ -+ irq_flags |= LTQ_SPI_IRNEN_R; ++ irq_flags |= hw->irnen_r; + } + + /* Enable TX or RX interrupts */ @@ -895,10 +901,18 @@ Signed-off-by: John Crispin <blogic@openwrt.org> + hw->bitbang.setup_transfer = ltq_spi_setup_transfer; + hw->bitbang.txrx_bufs = ltq_spi_txrx_bufs; + -+ if (of_machine_is_compatible("lantiq,ase")) ++ if (of_machine_is_compatible("lantiq,ase")) { + master->num_chipselect = 3; -+ else ++ ++ hw->irnen_t = LTQ_SPI_IRNEN_T_XWAY; ++ hw->irnen_r = LTQ_SPI_IRNEN_R_XWAY; ++ } else { + master->num_chipselect = 6; ++ ++ hw->irnen_t = LTQ_SPI_IRNEN_T; ++ hw->irnen_r = LTQ_SPI_IRNEN_R; ++ } ++ + master->bus_num = pdev->id; + master->setup = ltq_spi_setup; + master->cleanup = ltq_spi_cleanup; |