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ARM: SPEAr13xx: Pass generic DW DMAC platform data from DT

Browse Source 
This replaces an earlier patch from Viresh Kumar to move
the spear platform over to the generic DMA binding. This
version is now based on the merged multiplatform capable
spear platform, rather than the separate spear13xx/3xx/6xx
directories.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Viresh Kumar <viresh.kumar@linaro.org>
Cc: Vinod Koul <vinod.koul@linux.intel.com>
Cc: devicetree-discuss@lists.ozlabs.org
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Cc: spear-devel@list.st.com
This commit is contained in:
Arnd Bergmann 2013-01-28 21:48:47 +00:00
parent 1ef865bb45
commit 6e8887f60f
8 changed files with 29 additions and 254 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/boot/dts/spear1340.dtsi
View File

@ -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 {

25
arch/arm/boot/dts/spear13xx.dtsi
View File

@ -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 {

5
arch/arm/mach-spear/generic.h
View File

@ -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,

2
arch/arm/mach-spear/include/mach/spear.h
View File

@ -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 */

30
arch/arm/mach-spear/spear1310.c
View File

@ -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[] = {

32
arch/arm/mach-spear/spear1340.c
View File

@ -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),
{}
};

128
arch/arm/mach-spear/spear13xx-dma.h
View File

@ -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 */

58
arch/arm/mach-spear/spear13xx.c
View File

@ -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)
{
/*