diff options
| -rw-r--r-- | Documentation/devicetree/bindings/arm/primecell.txt | 19 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/ata/pata-arasan.txt | 22 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/serial/pl011.txt | 17 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/spi/spi_pl022.txt | 36 | ||||
| -rw-r--r-- | arch/arm/boot/dts/spear1340.dtsi | 3 | ||||
| -rw-r--r-- | arch/arm/boot/dts/spear13xx.dtsi | 25 | ||||
| -rw-r--r-- | arch/arm/mach-spear/generic.h | 5 | ||||
| -rw-r--r-- | arch/arm/mach-spear/include/mach/spear.h | 2 | ||||
| -rw-r--r-- | arch/arm/mach-spear/spear1310.c | 30 | ||||
| -rw-r--r-- | arch/arm/mach-spear/spear1340.c | 32 | ||||
| -rw-r--r-- | arch/arm/mach-spear/spear13xx-dma.h | 128 | ||||
| -rw-r--r-- | arch/arm/mach-spear/spear13xx.c | 58 | ||||
| -rw-r--r-- | drivers/ata/pata_arasan_cf.c | 37 | ||||
| -rw-r--r-- | drivers/spi/spi-pl022.c | 43 | ||||
| -rw-r--r-- | drivers/tty/serial/amba-pl011.c | 62 | ||||
| -rw-r--r-- | include/linux/pata_arasan_cf_data.h | 2 |
16 files changed, 219 insertions, 302 deletions
diff --git a/Documentation/devicetree/bindings/arm/primecell.txt b/Documentation/devicetree/bindings/arm/primecell.txt index 64fc82bc892..0df6acacfae 100644 --- a/Documentation/devicetree/bindings/arm/primecell.txt +++ b/Documentation/devicetree/bindings/arm/primecell.txt @@ -16,14 +16,31 @@ Optional properties: - clocks : From common clock binding. First clock is phandle to clock for apb pclk. Additional clocks are optional and specific to those peripherals. - clock-names : From common clock binding. Shall be "apb_pclk" for first clock. +- dmas : From common DMA binding. If present, refers to one or more dma channels. +- dma-names : From common DMA binding, needs to match the 'dmas' property. + Devices with exactly one receive and transmit channel shall name + these "rx" and "tx", respectively. +- pinctrl-<n> : Pinctrl states as described in bindings/pinctrl/pinctrl-bindings.txt +- pinctrl-names : Names corresponding to the numbered pinctrl states +- interrupts : one or more interrupt specifiers +- interrupt-names : names corresponding to the interrupts properties Example: serial@fff36000 { compatible = "arm,pl011", "arm,primecell"; arm,primecell-periphid = <0x00341011>; + clocks = <&pclk>; clock-names = "apb_pclk"; - + + dmas = <&dma-controller 4>, <&dma-controller 5>; + dma-names = "rx", "tx"; + + pinctrl-0 = <&uart0_default_mux>, <&uart0_default_mode>; + pinctrl-1 = <&uart0_sleep_mode>; + pinctrl-names = "default","sleep"; + + interrupts = <0 11 0x4>; }; diff --git a/Documentation/devicetree/bindings/ata/pata-arasan.txt b/Documentation/devicetree/bindings/ata/pata-arasan.txt index 95ec7f825ed..2aff154be84 100644 --- a/Documentation/devicetree/bindings/ata/pata-arasan.txt +++ b/Documentation/devicetree/bindings/ata/pata-arasan.txt @@ -6,6 +6,26 @@ Required properties: - interrupt-parent: Should be the phandle for the interrupt controller that services interrupts for this device - interrupt: Should contain the CF interrupt number +- clock-frequency: Interface clock rate, in Hz, one of + 25000000 + 33000000 + 40000000 + 50000000 + 66000000 + 75000000 + 100000000 + 125000000 + 150000000 + 166000000 + 200000000 + +Optional properties: +- arasan,broken-udma: if present, UDMA mode is unusable +- arasan,broken-mwdma: if present, MWDMA mode is unusable +- arasan,broken-pio: if present, PIO mode is unusable +- dmas: one DMA channel, as described in bindings/dma/dma.txt + required unless both UDMA and MWDMA mode are broken +- dma-names: the corresponding channel name, must be "data" Example: @@ -14,4 +34,6 @@ Example: reg = <0xfc000000 0x1000>; interrupt-parent = <&vic1>; interrupts = <12>; + dmas = <&dma-controller 23>; + dma-names = "data"; }; diff --git a/Documentation/devicetree/bindings/serial/pl011.txt b/Documentation/devicetree/bindings/serial/pl011.txt new file mode 100644 index 00000000000..5d2e840ae65 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/pl011.txt @@ -0,0 +1,17 @@ +* ARM AMBA Primecell PL011 serial UART + +Required properties: +- compatible: must be "arm,primecell", "arm,pl011" +- reg: exactly one register range with length 0x1000 +- interrupts: exactly one interrupt specifier + +Optional properties: +- pinctrl: When present, must have one state named "sleep" + and one state named "default" +- clocks: When present, must refer to exactly one clock named + "apb_pclk" +- dmas: When present, may have one or two dma channels. + The first one must be named "rx", the second one + must be named "tx". + +See also bindings/arm/primecell.txt diff --git a/Documentation/devicetree/bindings/spi/spi_pl022.txt b/Documentation/devicetree/bindings/spi/spi_pl022.txt index f158fd31cfd..22ed6797216 100644 --- a/Documentation/devicetree/bindings/spi/spi_pl022.txt +++ b/Documentation/devicetree/bindings/spi/spi_pl022.txt @@ -16,6 +16,11 @@ Optional properties: device will be suspended immediately - pl022,rt : indicates the controller should run the message pump with realtime priority to minimise the transfer latency on the bus (boolean) +- dmas : Two or more DMA channel specifiers following the convention outlined + in bindings/dma/dma.txt +- dma-names: Names for the dma channels, if present. There must be at + least one channel named "tx" for transmit and named "rx" for + receive. SPI slave nodes must be children of the SPI master node and can @@ -32,3 +37,34 @@ contain the following properties. - pl022,wait-state : Microwire interface: Wait state - pl022,duplex : Microwire interface: Full/Half duplex + +Example: + + spi@e0100000 { + compatible = "arm,pl022", "arm,primecell"; + reg = <0xe0100000 0x1000>; + #address-cells = <1>; + #size-cells = <0>; + interrupts = <0 31 0x4>; + dmas = <&dma-controller 23 1>, + <&dma-controller 24 0>; + dma-names = "rx", "tx"; + + m25p80@1 { + compatible = "st,m25p80"; + reg = <1>; + spi-max-frequency = <12000000>; + spi-cpol; + spi-cpha; + pl022,hierarchy = <0>; + pl022,interface = <0>; + pl022,slave-tx-disable; + pl022,com-mode = <0x2>; + pl022,rx-level-trig = <0>; + pl022,tx-level-trig = <0>; + pl022,ctrl-len = <0x11>; + pl022,wait-state = <0>; + pl022,duplex = <0>; + }; + }; + diff --git a/arch/arm/boot/dts/spear1340.dtsi b/arch/arm/boot/dts/spear1340.dtsi index 34da11aa679..e1786a0b2fc 100644 --- a/arch/arm/boot/dts/spear1340.dtsi +++ b/arch/arm/boot/dts/spear1340.dtsi @@ -113,6 +113,9 @@ reg = <0xb4100000 0x1000>; interrupts = <0 105 0x4>; status = "disabled"; + dmas = <&dwdma0 0x600 0 0 1>, /* 0xC << 11 */ + <&dwdma0 0x680 0 1 0>; /* 0xD << 7 */ + dma-names = "tx", "rx"; }; thermal@e07008c4 { diff --git a/arch/arm/boot/dts/spear13xx.dtsi b/arch/arm/boot/dts/spear13xx.dtsi index b4ca60f4eb4..45597fd9105 100644 --- a/arch/arm/boot/dts/spear13xx.dtsi +++ b/arch/arm/boot/dts/spear13xx.dtsi @@ -98,13 +98,24 @@ reg = <0xb2800000 0x1000>; interrupts = <0 29 0x4>; status = "disabled"; + dmas = <&dwdma0 0 0 0 0>; + dma-names = "data"; }; - dma@ea800000 { + dwdma0: dma@ea800000 { compatible = "snps,dma-spear1340"; reg = <0xea800000 0x1000>; interrupts = <0 19 0x4>; status = "disabled"; + + dma-channels = <8>; + #dma-cells = <3>; + dma-requests = <32>; + chan_allocation_order = <1>; + chan_priority = <1>; + block_size = <0xfff>; + dma-masters = <2>; + data_width = <3 3 0 0>; }; dma@eb000000 { @@ -112,6 +123,15 @@ reg = <0xeb000000 0x1000>; interrupts = <0 59 0x4>; status = "disabled"; + + dma-requests = <32>; + dma-channels = <8>; + dma-masters = <2>; + #dma-cells = <3>; + chan_allocation_order = <1>; + chan_priority = <1>; + block_size = <0xfff>; + data_width = <3 3 0 0>; }; fsmc: flash@b0000000 { @@ -261,6 +281,9 @@ #size-cells = <0>; interrupts = <0 31 0x4>; status = "disabled"; + dmas = <&dwdma0 0x2000 0 0 0>, /* 0x4 << 11 */ + <&dwdma0 0x0280 0 0 0>; /* 0x5 << 7 */ + dma-names = "tx", "rx"; }; rtc@e0580000 { diff --git a/arch/arm/mach-spear/generic.h b/arch/arm/mach-spear/generic.h index 8ba7e75b648..a9fd45362fe 100644 --- a/arch/arm/mach-spear/generic.h +++ b/arch/arm/mach-spear/generic.h @@ -22,11 +22,6 @@ extern void spear13xx_timer_init(void); extern void spear3xx_timer_init(void); extern struct pl022_ssp_controller pl022_plat_data; extern struct pl08x_platform_data pl080_plat_data; -extern struct dw_dma_platform_data dmac_plat_data; -extern struct dw_dma_slave cf_dma_priv; -extern struct dw_dma_slave nand_read_dma_priv; -extern struct dw_dma_slave nand_write_dma_priv; -bool dw_dma_filter(struct dma_chan *chan, void *slave); void __init spear_setup_of_timer(void); void __init spear3xx_clk_init(void __iomem *misc_base, diff --git a/arch/arm/mach-spear/include/mach/spear.h b/arch/arm/mach-spear/include/mach/spear.h index 374ddc393df..cf3a5369eec 100644 --- a/arch/arm/mach-spear/include/mach/spear.h +++ b/arch/arm/mach-spear/include/mach/spear.h @@ -82,8 +82,6 @@ #define VA_L2CC_BASE IOMEM(UL(0xFB000000)) /* others */ -#define DMAC0_BASE UL(0xEA800000) -#define DMAC1_BASE UL(0xEB000000) #define MCIF_CF_BASE UL(0xB2800000) /* Debug uart for linux, will be used for debug and uncompress messages */ diff --git a/arch/arm/mach-spear/spear1310.c b/arch/arm/mach-spear/spear1310.c index ed3b5c287a7..9eaac2c881e 100644 --- a/arch/arm/mach-spear/spear1310.c +++ b/arch/arm/mach-spear/spear1310.c @@ -23,40 +23,12 @@ #include <mach/spear.h> /* Base addresses */ -#define SPEAR1310_SSP1_BASE UL(0x5D400000) -#define SPEAR1310_SATA0_BASE UL(0xB1000000) -#define SPEAR1310_SATA1_BASE UL(0xB1800000) -#define SPEAR1310_SATA2_BASE UL(0xB4000000) - #define SPEAR1310_RAS_GRP1_BASE UL(0xD8000000) #define VA_SPEAR1310_RAS_GRP1_BASE UL(0xFA000000) -static struct arasan_cf_pdata cf_pdata = { - .cf_if_clk = CF_IF_CLK_166M, - .quirk = CF_BROKEN_UDMA, - .dma_priv = &cf_dma_priv, -}; - -/* ssp device registration */ -static struct pl022_ssp_controller ssp1_plat_data = { - .enable_dma = 0, -}; - -/* Add SPEAr1310 auxdata to pass platform data */ -static struct of_dev_auxdata spear1310_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_pdata), - OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data), - OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data), - OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data), - - OF_DEV_AUXDATA("arm,pl022", SPEAR1310_SSP1_BASE, NULL, &ssp1_plat_data), - {} -}; - static void __init spear1310_dt_init(void) { - of_platform_populate(NULL, of_default_bus_match_table, - spear1310_auxdata_lookup, NULL); + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); } static const char * const spear1310_dt_board_compat[] = { diff --git a/arch/arm/mach-spear/spear1340.c b/arch/arm/mach-spear/spear1340.c index 75e38644bbf..a04a7fe76f7 100644 --- a/arch/arm/mach-spear/spear1340.c +++ b/arch/arm/mach-spear/spear1340.c @@ -16,18 +16,16 @@ #include <linux/ahci_platform.h> #include <linux/amba/serial.h> #include <linux/delay.h> -#include <linux/dw_dmac.h> #include <linux/of_platform.h> #include <linux/irqchip.h> #include <asm/mach/arch.h> #include "generic.h" #include <mach/spear.h> -#include "spear13xx-dma.h" +/* FIXME: Move SATA PHY code into a standalone driver */ /* Base addresses */ #define SPEAR1340_SATA_BASE UL(0xB1000000) -#define SPEAR1340_UART1_BASE UL(0xB4100000) /* Power Management Registers */ #define SPEAR1340_PCM_CFG (VA_MISC_BASE + 0x100) @@ -79,28 +77,6 @@ (SPEAR1340_MIPHY_OSC_BYPASS_EXT | \ SPEAR1340_MIPHY_PLL_RATIO_TOP(25)) -static struct dw_dma_slave uart1_dma_param[] = { - { - /* Tx */ - .cfg_hi = DWC_CFGH_DST_PER(SPEAR1340_DMA_REQ_UART1_TX), - .cfg_lo = 0, - .src_master = DMA_MASTER_MEMORY, - .dst_master = SPEAR1340_DMA_MASTER_UART1, - }, { - /* Rx */ - .cfg_hi = DWC_CFGH_SRC_PER(SPEAR1340_DMA_REQ_UART1_RX), - .cfg_lo = 0, - .src_master = SPEAR1340_DMA_MASTER_UART1, - .dst_master = DMA_MASTER_MEMORY, - } -}; - -static struct amba_pl011_data uart1_data = { - .dma_filter = dw_dma_filter, - .dma_tx_param = &uart1_dma_param[0], - .dma_rx_param = &uart1_dma_param[1], -}; - /* SATA device registration */ static int sata_miphy_init(struct device *dev, void __iomem *addr) { @@ -159,14 +135,8 @@ static struct ahci_platform_data sata_pdata = { /* Add SPEAr1340 auxdata to pass platform data */ static struct of_dev_auxdata spear1340_auxdata_lookup[] __initdata = { - OF_DEV_AUXDATA("arasan,cf-spear1340", MCIF_CF_BASE, NULL, &cf_dma_priv), - OF_DEV_AUXDATA("snps,dma-spear1340", DMAC0_BASE, NULL, &dmac_plat_data), - OF_DEV_AUXDATA("snps,dma-spear1340", DMAC1_BASE, NULL, &dmac_plat_data), - OF_DEV_AUXDATA("arm,pl022", SSP_BASE, NULL, &pl022_plat_data), - OF_DEV_AUXDATA("snps,spear-ahci", SPEAR1340_SATA_BASE, NULL, &sata_pdata), - OF_DEV_AUXDATA("arm,pl011", SPEAR1340_UART1_BASE, NULL, &uart1_data), {} }; diff --git a/arch/arm/mach-spear/spear13xx-dma.h b/arch/arm/mach-spear/spear13xx-dma.h deleted file mode 100644 index d50bdb60592..00000000000 --- a/arch/arm/mach-spear/spear13xx-dma.h +++ /dev/null @@ -1,128 +0,0 @@ -/* - * arch/arm/mach-spear13xx/include/mach/dma.h - * - * DMA information for SPEAr13xx machine family - * - * Copyright (C) 2012 ST Microelectronics - * Viresh Kumar <viresh.linux@gmail.com> - * - * This file is licensed under the terms of the GNU General Public - * License version 2. This program is licensed "as is" without any - * warranty of any kind, whether express or implied. - */ - -#ifndef __MACH_DMA_H -#define __MACH_DMA_H - -/* request id of all the peripherals */ -enum dma_master_info { - /* Accessible from only one master */ - DMA_MASTER_MCIF = 0, - DMA_MASTER_FSMC = 1, - /* Accessible from both 0 & 1 */ - DMA_MASTER_MEMORY = 0, - DMA_MASTER_ADC = 0, - DMA_MASTER_UART0 = 0, - DMA_MASTER_SSP0 = 0, - DMA_MASTER_I2C0 = 0, - -#ifdef CONFIG_MACH_SPEAR1310 - /* Accessible from only one master */ - SPEAR1310_DMA_MASTER_JPEG = 1, - - /* Accessible from both 0 & 1 */ - SPEAR1310_DMA_MASTER_I2S = 0, - SPEAR1310_DMA_MASTER_UART1 = 0, - SPEAR1310_DMA_MASTER_UART2 = 0, - SPEAR1310_DMA_MASTER_UART3 = 0, - SPEAR1310_DMA_MASTER_UART4 = 0, - SPEAR1310_DMA_MASTER_UART5 = 0, - SPEAR1310_DMA_MASTER_I2C1 = 0, - SPEAR1310_DMA_MASTER_I2C2 = 0, - SPEAR1310_DMA_MASTER_I2C3 = 0, - SPEAR1310_DMA_MASTER_I2C4 = 0, - SPEAR1310_DMA_MASTER_I2C5 = 0, - SPEAR1310_DMA_MASTER_I2C6 = 0, - SPEAR1310_DMA_MASTER_I2C7 = 0, - SPEAR1310_DMA_MASTER_SSP1 = 0, -#endif - -#ifdef CONFIG_MACH_SPEAR1340 - /* Accessible from only one master */ - SPEAR1340_DMA_MASTER_I2S_PLAY = 1, - SPEAR1340_DMA_MASTER_I2S_REC = 1, - SPEAR1340_DMA_MASTER_I2C1 = 1, - SPEAR1340_DMA_MASTER_UART1 = 1, - - /* following are accessible from both master 0 & 1 */ - SPEAR1340_DMA_MASTER_SPDIF = 0, - SPEAR1340_DMA_MASTER_CAM = 1, - SPEAR1340_DMA_MASTER_VIDEO_IN = 0, - SPEAR1340_DMA_MASTER_MALI = 0, -#endif -}; - -enum request_id { - DMA_REQ_ADC = 0, - DMA_REQ_SSP0_TX = 4, - DMA_REQ_SSP0_RX = 5, - DMA_REQ_UART0_TX = 6, - DMA_REQ_UART0_RX = 7, - DMA_REQ_I2C0_TX = 8, - DMA_REQ_I2C0_RX = 9, - -#ifdef CONFIG_MACH_SPEAR1310 - SPEAR1310_DMA_REQ_FROM_JPEG = 2, - SPEAR1310_DMA_REQ_TO_JPEG = 3, - SPEAR1310_DMA_REQ_I2S_TX = 10, - SPEAR1310_DMA_REQ_I2S_RX = 11, - - SPEAR1310_DMA_REQ_I2C1_RX = 0, - SPEAR1310_DMA_REQ_I2C1_TX = 1, - SPEAR1310_DMA_REQ_I2C2_RX = 2, - SPEAR1310_DMA_REQ_I2C2_TX = 3, - SPEAR1310_DMA_REQ_I2C3_RX = 4, - SPEAR1310_DMA_REQ_I2C3_TX = 5, - SPEAR1310_DMA_REQ_I2C4_RX = 6, - SPEAR1310_DMA_REQ_I2C4_TX = 7, - SPEAR1310_DMA_REQ_I2C5_RX = 8, - SPEAR1310_DMA_REQ_I2C5_TX = 9, - SPEAR1310_DMA_REQ_I2C6_RX = 10, - SPEAR1310_DMA_REQ_I2C6_TX = 11, - SPEAR1310_DMA_REQ_UART1_RX = 12, - SPEAR1310_DMA_REQ_UART1_TX = 13, - SPEAR1310_DMA_REQ_UART2_RX = 14, - SPEAR1310_DMA_REQ_UART2_TX = 15, - SPEAR1310_DMA_REQ_UART5_RX = 16, - SPEAR1310_DMA_REQ_UART5_TX = 17, - SPEAR1310_DMA_REQ_SSP1_RX = 18, - SPEAR1310_DMA_REQ_SSP1_TX = 19, - SPEAR1310_DMA_REQ_I2C7_RX = 20, - SPEAR1310_DMA_REQ_I2C7_TX = 21, - SPEAR1310_DMA_REQ_UART3_RX = 28, - SPEAR1310_DMA_REQ_UART3_TX = 29, - SPEAR1310_DMA_REQ_UART4_RX = 30, - SPEAR1310_DMA_REQ_UART4_TX = 31, -#endif - -#ifdef CONFIG_MACH_SPEAR1340 - SPEAR1340_DMA_REQ_SPDIF_TX = 2, - SPEAR1340_DMA_REQ_SPDIF_RX = 3, - SPEAR1340_DMA_REQ_I2S_TX = 10, - SPEAR1340_DMA_REQ_I2S_RX = 11, - SPEAR1340_DMA_REQ_UART1_TX = 12, - SPEAR1340_DMA_REQ_UART1_RX = 13, - SPEAR1340_DMA_REQ_I2C1_TX = 14, - SPEAR1340_DMA_REQ_I2C1_RX = 15, - SPEAR1340_DMA_REQ_CAM0_EVEN = 0, - SPEAR1340_DMA_REQ_CAM0_ODD = 1, - SPEAR1340_DMA_REQ_CAM1_EVEN = 2, - SPEAR1340_DMA_REQ_CAM1_ODD = 3, - SPEAR1340_DMA_REQ_CAM2_EVEN = 4, - SPEAR1340_DMA_REQ_CAM2_ODD = 5, - SPEAR1340_DMA_REQ_CAM3_EVEN = 6, - SPEAR1340_DMA_REQ_CAM3_ODD = 7, -#endif -}; - -#endif /* __MACH_DMA_H */ diff --git a/arch/arm/mach-spear/spear13xx.c b/arch/arm/mach-spear/spear13xx.c index 1b97e862347..3975916666a 100644 --- a/arch/arm/mach-spear/spear13xx.c +++ b/arch/arm/mach-spear/spear13xx.c @@ -15,7 +15,6 @@ #include <linux/amba/pl022.h> #include <linux/clk.h> -#include <linux/dw_dmac.h> #include <linux/err.h> #include <linux/of.h> #include <asm/hardware/cache-l2x0.h> @@ -24,63 +23,6 @@ #include "generic.h" #include <mach/spear.h> -#include "spear13xx-dma.h" - -/* common dw_dma filter routine to be used by peripherals */ -bool dw_dma_filter(struct dma_chan *chan, void *slave) -{ - struct dw_dma_slave *dws = (struct dw_dma_slave *)slave; - - if (chan->device->dev == dws->dma_dev) { - chan->private = slave; - return true; - } else { - return false; - } -} - -/* ssp device registration */ -static struct dw_dma_slave ssp_dma_param[] = { - { - /* Tx */ - .cfg_hi = DWC_CFGH_DST_PER(DMA_REQ_SSP0_TX), - .cfg_lo = 0, - .src_master = DMA_MASTER_MEMORY, - .dst_master = DMA_MASTER_SSP0, - }, { - /* Rx */ - .cfg_hi = DWC_CFGH_SRC_PER(DMA_REQ_SSP0_RX), - .cfg_lo = 0, - .src_master = DMA_MASTER_SSP0, - .dst_master = DMA_MASTER_MEMORY, - } -}; - -struct pl022_ssp_controller pl022_plat_data = { - .enable_dma = 1, - .dma_filter = dw_dma_filter, - .dma_rx_param = &ssp_dma_param[1], - .dma_tx_param = &ssp_dma_param[0], -}; - -/* CF device registration */ -struct dw_dma_slave cf_dma_priv = { - .cfg_hi = 0, - .cfg_lo = 0, - .src_master = 0, - .dst_master = 0, -}; - -/* dmac device registeration */ -struct dw_dma_platform_data dmac_plat_data = { - .nr_channels = 8, - .chan_allocation_order = CHAN_ALLOCATION_DESCENDING, - .chan_priority = CHAN_PRIORITY_DESCENDING, - .block_size = 4095U, - .nr_masters = 2, - .data_width = { 3, 3, 0, 0 }, -}; - void __init spear13xx_l2x0_init(void) { /* diff --git a/drivers/ata/pata_arasan_cf.c b/drivers/ata/pata_arasan_cf.c index 405022d302c..7638121cb5d 100644 --- a/drivers/ata/pata_arasan_cf.c +++ b/drivers/ata/pata_arasan_cf.c @@ -209,8 +209,6 @@ struct arasan_cf_dev { struct dma_chan *dma_chan; /* Mask for DMA transfers */ dma_cap_mask_t mask; - /* dma channel private data */ - void *dma_priv; /* DMA transfer work */ struct work_struct work; /* DMA delayed finish work */ @@ -308,6 +306,7 @@ static void cf_card_detect(struct arasan_cf_dev *acdev, bool hotplugged) static int cf_init(struct arasan_cf_dev *acdev) { struct arasan_cf_pdata *pdata = dev_get_platdata(acdev->host->dev); + unsigned int if_clk; unsigned long flags; int ret = 0; @@ -325,8 +324,12 @@ static int cf_init(struct arasan_cf_dev *acdev) spin_lock_irqsave(&acdev->host->lock, flags); /* configure CF interface clock */ - writel((pdata->cf_if_clk <= CF_IF_CLK_200M) ? pdata->cf_if_clk : - CF_IF_CLK_166M, acdev->vbase + CLK_CFG); + /* TODO: read from device tree */ + if_clk = CF_IF_CLK_166M; + if (pdata && pdata->cf_if_clk <= CF_IF_CLK_200M) + if_clk = pdata->cf_if_clk; + + writel(if_clk, acdev->vbase + CLK_CFG); writel(TRUE_IDE_MODE | CFHOST_ENB, acdev->vbase + OP_MODE); cf_interrupt_enable(acdev, CARD_DETECT_IRQ, 1); @@ -357,12 +360,6 @@ static void dma_callback(void *dev) complete(&acdev->dma_completion); } -static bool filter(struct dma_chan *chan, void *slave) -{ - chan->private = slave; - return true; -} - static inline void dma_complete(struct arasan_cf_dev *acdev) { struct ata_queued_cmd *qc = acdev->qc; @@ -530,8 +527,7 @@ static void data_xfer(struct work_struct *work) /* request dma channels */ /* dma_request_channel may sleep, so calling from process context */ - acdev->dma_chan = dma_request_channel(acdev->mask, filter, - acdev->dma_priv); + acdev->dma_chan = dma_request_slave_channel(acdev->host->dev, "data"); if (!acdev->dma_chan) { dev_err(acdev->host->dev, "Unable to get dma_chan\n"); goto chan_request_fail; @@ -798,6 +794,7 @@ static int arasan_cf_probe(struct platform_device *pdev) struct ata_host *host; struct ata_port *ap; struct resource *res; + u32 quirk; irq_handler_t irq_handler = NULL; int ret = 0; @@ -817,12 +814,17 @@ static int arasan_cf_probe(struct platform_device *pdev) return -ENOMEM; } + if (pdata) + quirk = pdata->quirk; + else + quirk = CF_BROKEN_UDMA; /* as it is on spear1340 */ + /* if irq is 0, support only PIO */ acdev->irq = platform_get_irq(pdev, 0); if (acdev->irq) irq_handler = arasan_cf_interrupt; else - pdata->quirk |= CF_BROKEN_MWDMA | CF_BROKEN_UDMA; + quirk |= CF_BROKEN_MWDMA | CF_BROKEN_UDMA; acdev->pbase = res->start; acdev->vbase = devm_ioremap_nocache(&pdev->dev, res->start, @@ -859,17 +861,16 @@ static int arasan_cf_probe(struct platform_device *pdev) INIT_WORK(&acdev->work, data_xfer); INIT_DELAYED_WORK(&acdev->dwork, delayed_finish); dma_cap_set(DMA_MEMCPY, acdev->mask); - acdev->dma_priv = pdata->dma_priv; /* Handle platform specific quirks */ - if (pdata->quirk) { - if (pdata->quirk & CF_BROKEN_PIO) { + if (quirk) { + if (quirk & CF_BROKEN_PIO) { ap->ops->set_piomode = NULL; ap->pio_mask = 0; } - if (pdata->quirk & CF_BROKEN_MWDMA) + if (quirk & CF_BROKEN_MWDMA) ap->mwdma_mask = 0; - if (pdata->quirk & CF_BROKEN_UDMA) + if (quirk & CF_BROKEN_UDMA) ap->udma_mask = 0; } ap->flags |= ATA_FLAG_PIO_POLLING | ATA_FLAG_NO_ATAPI; diff --git a/drivers/spi/spi-pl022.c b/drivers/spi/spi-pl022.c index b0fe393c882..371cc66f1a0 100644 --- a/drivers/spi/spi-pl022.c +++ b/drivers/spi/spi-pl022.c @@ -1139,6 +1139,35 @@ err_no_rxchan: return -ENODEV; } +static int pl022_dma_autoprobe(struct pl022 *pl022) +{ + struct device *dev = &pl022->adev->dev; + + /* automatically configure DMA channels from platform, normally using DT */ + pl022->dma_rx_channel = dma_request_slave_channel(dev, "rx"); + if (!pl022->dma_rx_channel) + goto err_no_rxchan; + + pl022->dma_tx_channel = dma_request_slave_channel(dev, "tx"); + if (!pl022->dma_tx_channel) + goto err_no_txchan; + + pl022->dummypage = kmalloc(PAGE_SIZE, GFP_KERNEL); + if (!pl022->dummypage) + goto err_no_dummypage; + + return 0; + +err_no_dummypage: + dma_release_channel(pl022->dma_tx_channel); + pl022->dma_tx_channel = NULL; +err_no_txchan: + dma_release_channel(pl022->dma_rx_channel); + pl022->dma_rx_channel = NULL; +err_no_rxchan: + return -ENODEV; +} + static void terminate_dma(struct pl022 *pl022) { struct dma_chan *rxchan = pl022->dma_rx_channel; @@ -1167,6 +1196,11 @@ static inline int configure_dma(struct pl022 *pl022) return -ENODEV; } +static inline int pl022_dma_autoprobe(struct pl022 *pl022) +{ + return 0; +} + static inline int pl022_dma_probe(struct pl022 *pl022) { return 0; @@ -2226,8 +2260,13 @@ static int pl022_probe(struct amba_device *adev, const struct amba_id *id) goto err_no_irq; } - /* Get DMA channels */ - if (platform_info->enable_dma) { + /* Get DMA channels, try autoconfiguration first */ + status = pl022_dma_autoprobe(pl022); + + /* If that failed, use channels from platform_info */ + if (status == 0) + platform_info->enable_dma = 1; + else if (platform_info->enable_dma) { status = pl022_dma_probe(pl022); if (status != 0) platform_info->enable_dma = 0; diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 3ea5408fcbe..c25b00ef9db 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -245,7 +245,7 @@ static void pl011_sgbuf_free(struct dma_chan *chan, struct pl011_sgbuf *sg, } } -static void pl011_dma_probe_initcall(struct uart_amba_port *uap) +static void pl011_dma_probe_initcall(struct device *dev, struct uart_amba_port *uap) { /* DMA is the sole user of the platform data right now */ struct amba_pl011_data *plat = uap->port.dev->platform_data; @@ -259,20 +259,25 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) struct dma_chan *chan; dma_cap_mask_t mask; - /* We need platform data */ - if (!plat || !plat->dma_filter) { - dev_info(uap->port.dev, "no DMA platform data\n"); - return; - } + chan = dma_request_slave_channel(dev, "tx"); - /* Try to acquire a generic DMA engine slave TX channel */ - dma_cap_zero(mask); - dma_cap_set(DMA_SLAVE, mask); - - chan = dma_request_channel(mask, plat->dma_filter, plat->dma_tx_param); if (!chan) { - dev_err(uap->port.dev, "no TX DMA channel!\n"); - return; + /* We need platform data */ + if (!plat || !plat->dma_filter) { + dev_info(uap->port.dev, "no DMA platform data\n"); + return; + } + + /* Try to acquire a generic DMA engine slave TX channel */ + dma_cap_zero(mask); + dma_cap_set(DMA_SLAVE, mask); + + chan = dma_request_channel(mask, plat->dma_filter, + plat->dma_tx_param); + if (!chan) { + dev_err(uap->port.dev, "no TX DMA channel!\n"); + return; + } } dmaengine_slave_config(chan, &tx_conf); @@ -282,7 +287,18 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) dma_chan_name(uap->dmatx.chan)); /* Optionally make use of an RX channel as well */ - if (plat->dma_rx_param) { + chan = dma_request_slave_channel(dev, "rx"); + + if (!chan && plat->dma_rx_param) { + chan = dma_request_channel(mask, plat->dma_filter, plat->dma_rx_param); + + if (!chan) { + dev_err(uap->port.dev, "no RX DMA channel!\n"); + return; + } + } + + if (chan) { struct dma_slave_config rx_conf = { .src_addr = uap->port.mapbase + UART01x_DR, .src_addr_width = DMA_SLAVE_BUSWIDTH_1_BYTE, @@ -291,12 +307,6 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) .device_fc = false, }; - chan = dma_request_channel(mask, plat->dma_filter, plat->dma_rx_param); - if (!chan) { - dev_err(uap->port.dev, "no RX DMA channel!\n"); - return; - } - dmaengine_slave_config(chan, &rx_conf); uap->dmarx.chan = chan; @@ -315,6 +325,7 @@ static void pl011_dma_probe_initcall(struct uart_amba_port *uap) struct dma_uap { struct list_head node; struct uart_amba_port *uap; + struct device *dev; }; static LIST_HEAD(pl011_dma_uarts); @@ -325,7 +336,7 @@ static int __init pl011_dma_initcall(void) list_for_each_safe(node, tmp, &pl011_dma_uarts) { struct dma_uap *dmau = list_entry(node, struct dma_uap, node); - pl011_dma_probe_initcall(dmau->uap); + pl011_dma_probe_initcall(dmau->dev, dmau->uap); list_del(node); kfree(dmau); } @@ -334,18 +345,19 @@ static int __init pl011_dma_initcall(void) device_initcall(pl011_dma_initcall); -static void pl011_dma_probe(struct uart_amba_port *uap) +static void pl011_dma_probe(struct device *dev, struct uart_amba_port *uap) { struct dma_uap *dmau = kzalloc(sizeof(struct dma_uap), GFP_KERNEL); if (dmau) { dmau->uap = uap; + dmau->dev = dev; list_add_tail(&dmau->node, &pl011_dma_uarts); } } #else -static void pl011_dma_probe(struct uart_amba_port *uap) +static void pl011_dma_probe(struct device *dev, struct uart_amba_port *uap) { - pl011_dma_probe_initcall(uap); + pl011_dma_probe_initcall(dev, uap); } #endif @@ -2020,7 +2032,7 @@ static int pl011_probe(struct amba_device *dev, const struct amba_id *id) uap->port.ops = &amba_pl011_pops; uap->port.flags = UPF_BOOT_AUTOCONF; uap->port.line = i; - pl011_dma_probe(uap); + pl011_dma_probe(&dev->dev, uap); /* Ensure interrupts from this UART are masked and cleared */ writew(0, uap->port.membase + UART011_IMSC); diff --git a/include/linux/pata_arasan_cf_data.h b/include/linux/pata_arasan_cf_data.h index a7b4fc386e6..3cc21c9cc1e 100644 --- a/include/linux/pata_arasan_cf_data.h +++ b/include/linux/pata_arasan_cf_data.h @@ -37,8 +37,6 @@ struct arasan_cf_pdata { #define CF_BROKEN_PIO (1) #define CF_BROKEN_MWDMA (1 << 1) #define CF_BROKEN_UDMA (1 << 2) - /* This is platform specific data for the DMA controller */ - void *dma_priv; }; static inline void |