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linux-next/arch/arm/mach-spear3xx/spear310.c
Russell King dc8d5f8de1 dmaengine: PL08x: get rid of unnecessary checks in dma_slave_config 
Get rid of the unnecessary checks in dma_slave_config utilizing
the DMA direction.  This allows us to move the computation of
cctl to the prepare function.

Acked-by: Linus Walleij <linus.walleij@linaro.org>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-07-01 14:15:48 +01:00

466 lines
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/*
* arch/arm/mach-spear3xx/spear310.c
*
* SPEAr310 machine source file
*
* Copyright (C) 2009-2012 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.
*/
#define pr_fmt(fmt) "SPEAr310: " fmt
#include <linux/amba/pl08x.h>
#include <linux/amba/serial.h>
#include <linux/of_platform.h>
#include <asm/hardware/vic.h>
#include <asm/mach/arch.h>
#include <plat/shirq.h>
#include <mach/generic.h>
#include <mach/spear.h>
#define SPEAR310_UART1_BASE UL(0xB2000000)
#define SPEAR310_UART2_BASE UL(0xB2080000)
#define SPEAR310_UART3_BASE UL(0xB2100000)
#define SPEAR310_UART4_BASE UL(0xB2180000)
#define SPEAR310_UART5_BASE UL(0xB2200000)
#define SPEAR310_SOC_CONFIG_BASE UL(0xB4000000)
/* Interrupt registers offsets and masks */
#define SPEAR310_INT_STS_MASK_REG 0x04
#define SPEAR310_SMII0_IRQ_MASK (1 << 0)
#define SPEAR310_SMII1_IRQ_MASK (1 << 1)
#define SPEAR310_SMII2_IRQ_MASK (1 << 2)
#define SPEAR310_SMII3_IRQ_MASK (1 << 3)
#define SPEAR310_WAKEUP_SMII0_IRQ_MASK (1 << 4)
#define SPEAR310_WAKEUP_SMII1_IRQ_MASK (1 << 5)
#define SPEAR310_WAKEUP_SMII2_IRQ_MASK (1 << 6)
#define SPEAR310_WAKEUP_SMII3_IRQ_MASK (1 << 7)
#define SPEAR310_UART1_IRQ_MASK (1 << 8)
#define SPEAR310_UART2_IRQ_MASK (1 << 9)
#define SPEAR310_UART3_IRQ_MASK (1 << 10)
#define SPEAR310_UART4_IRQ_MASK (1 << 11)
#define SPEAR310_UART5_IRQ_MASK (1 << 12)
#define SPEAR310_EMI_IRQ_MASK (1 << 13)
#define SPEAR310_TDM_HDLC_IRQ_MASK (1 << 14)
#define SPEAR310_RS485_0_IRQ_MASK (1 << 15)
#define SPEAR310_RS485_1_IRQ_MASK (1 << 16)
#define SPEAR310_SHIRQ_RAS1_MASK 0x000FF
#define SPEAR310_SHIRQ_RAS2_MASK 0x01F00
#define SPEAR310_SHIRQ_RAS3_MASK 0x02000
#define SPEAR310_SHIRQ_INTRCOMM_RAS_MASK 0x1C000
/* SPEAr310 Virtual irq definitions */
/* IRQs sharing IRQ_GEN_RAS_1 */
#define SPEAR310_VIRQ_SMII0 (SPEAR3XX_VIRQ_START + 0)
#define SPEAR310_VIRQ_SMII1 (SPEAR3XX_VIRQ_START + 1)
#define SPEAR310_VIRQ_SMII2 (SPEAR3XX_VIRQ_START + 2)
#define SPEAR310_VIRQ_SMII3 (SPEAR3XX_VIRQ_START + 3)
#define SPEAR310_VIRQ_WAKEUP_SMII0 (SPEAR3XX_VIRQ_START + 4)
#define SPEAR310_VIRQ_WAKEUP_SMII1 (SPEAR3XX_VIRQ_START + 5)
#define SPEAR310_VIRQ_WAKEUP_SMII2 (SPEAR3XX_VIRQ_START + 6)
#define SPEAR310_VIRQ_WAKEUP_SMII3 (SPEAR3XX_VIRQ_START + 7)
/* IRQs sharing IRQ_GEN_RAS_2 */
#define SPEAR310_VIRQ_UART1 (SPEAR3XX_VIRQ_START + 8)
#define SPEAR310_VIRQ_UART2 (SPEAR3XX_VIRQ_START + 9)
#define SPEAR310_VIRQ_UART3 (SPEAR3XX_VIRQ_START + 10)
#define SPEAR310_VIRQ_UART4 (SPEAR3XX_VIRQ_START + 11)
#define SPEAR310_VIRQ_UART5 (SPEAR3XX_VIRQ_START + 12)
/* IRQs sharing IRQ_GEN_RAS_3 */
#define SPEAR310_VIRQ_EMI (SPEAR3XX_VIRQ_START + 13)
#define SPEAR310_VIRQ_PLGPIO (SPEAR3XX_VIRQ_START + 14)
/* IRQs sharing IRQ_INTRCOMM_RAS_ARM */
#define SPEAR310_VIRQ_TDM_HDLC (SPEAR3XX_VIRQ_START + 15)
#define SPEAR310_VIRQ_RS485_0 (SPEAR3XX_VIRQ_START + 16)
#define SPEAR310_VIRQ_RS485_1 (SPEAR3XX_VIRQ_START + 17)
/* spear3xx shared irq */
static struct shirq_dev_config shirq_ras1_config[] = {
{
.virq = SPEAR310_VIRQ_SMII0,
.status_mask = SPEAR310_SMII0_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_SMII1,
.status_mask = SPEAR310_SMII1_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_SMII2,
.status_mask = SPEAR310_SMII2_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_SMII3,
.status_mask = SPEAR310_SMII3_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_WAKEUP_SMII0,
.status_mask = SPEAR310_WAKEUP_SMII0_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_WAKEUP_SMII1,
.status_mask = SPEAR310_WAKEUP_SMII1_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_WAKEUP_SMII2,
.status_mask = SPEAR310_WAKEUP_SMII2_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_WAKEUP_SMII3,
.status_mask = SPEAR310_WAKEUP_SMII3_IRQ_MASK,
},
};
static struct spear_shirq shirq_ras1 = {
.irq = SPEAR3XX_IRQ_GEN_RAS_1,
.dev_config = shirq_ras1_config,
.dev_count = ARRAY_SIZE(shirq_ras1_config),
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
.status_reg_mask = SPEAR310_SHIRQ_RAS1_MASK,
.clear_reg = -1,
},
};
static struct shirq_dev_config shirq_ras2_config[] = {
{
.virq = SPEAR310_VIRQ_UART1,
.status_mask = SPEAR310_UART1_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_UART2,
.status_mask = SPEAR310_UART2_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_UART3,
.status_mask = SPEAR310_UART3_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_UART4,
.status_mask = SPEAR310_UART4_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_UART5,
.status_mask = SPEAR310_UART5_IRQ_MASK,
},
};
static struct spear_shirq shirq_ras2 = {
.irq = SPEAR3XX_IRQ_GEN_RAS_2,
.dev_config = shirq_ras2_config,
.dev_count = ARRAY_SIZE(shirq_ras2_config),
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
.status_reg_mask = SPEAR310_SHIRQ_RAS2_MASK,
.clear_reg = -1,
},
};
static struct shirq_dev_config shirq_ras3_config[] = {
{
.virq = SPEAR310_VIRQ_EMI,
.status_mask = SPEAR310_EMI_IRQ_MASK,
},
};
static struct spear_shirq shirq_ras3 = {
.irq = SPEAR3XX_IRQ_GEN_RAS_3,
.dev_config = shirq_ras3_config,
.dev_count = ARRAY_SIZE(shirq_ras3_config),
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
.status_reg_mask = SPEAR310_SHIRQ_RAS3_MASK,
.clear_reg = -1,
},
};
static struct shirq_dev_config shirq_intrcomm_ras_config[] = {
{
.virq = SPEAR310_VIRQ_TDM_HDLC,
.status_mask = SPEAR310_TDM_HDLC_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_RS485_0,
.status_mask = SPEAR310_RS485_0_IRQ_MASK,
}, {
.virq = SPEAR310_VIRQ_RS485_1,
.status_mask = SPEAR310_RS485_1_IRQ_MASK,
},
};
static struct spear_shirq shirq_intrcomm_ras = {
.irq = SPEAR3XX_IRQ_INTRCOMM_RAS_ARM,
.dev_config = shirq_intrcomm_ras_config,
.dev_count = ARRAY_SIZE(shirq_intrcomm_ras_config),
.regs = {
.enb_reg = -1,
.status_reg = SPEAR310_INT_STS_MASK_REG,
.status_reg_mask = SPEAR310_SHIRQ_INTRCOMM_RAS_MASK,
.clear_reg = -1,
},
};
/* DMAC platform data's slave info */
struct pl08x_channel_data spear310_dma_info[] = {
{
.bus_id = "uart0_rx",
.min_signal = 2,
.max_signal = 2,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart0_tx",
.min_signal = 3,
.max_signal = 3,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ssp0_rx",
.min_signal = 8,
.max_signal = 8,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ssp0_tx",
.min_signal = 9,
.max_signal = 9,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "i2c_rx",
.min_signal = 10,
.max_signal = 10,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "i2c_tx",
.min_signal = 11,
.max_signal = 11,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "irda",
.min_signal = 12,
.max_signal = 12,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "adc",
.min_signal = 13,
.max_signal = 13,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "to_jpeg",
.min_signal = 14,
.max_signal = 14,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "from_jpeg",
.min_signal = 15,
.max_signal = 15,
.muxval = 0,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart1_rx",
.min_signal = 0,
.max_signal = 0,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart1_tx",
.min_signal = 1,
.max_signal = 1,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart2_rx",
.min_signal = 2,
.max_signal = 2,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart2_tx",
.min_signal = 3,
.max_signal = 3,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart3_rx",
.min_signal = 4,
.max_signal = 4,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart3_tx",
.min_signal = 5,
.max_signal = 5,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart4_rx",
.min_signal = 6,
.max_signal = 6,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart4_tx",
.min_signal = 7,
.max_signal = 7,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart5_rx",
.min_signal = 8,
.max_signal = 8,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "uart5_tx",
.min_signal = 9,
.max_signal = 9,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras5_rx",
.min_signal = 10,
.max_signal = 10,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras5_tx",
.min_signal = 11,
.max_signal = 11,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras6_rx",
.min_signal = 12,
.max_signal = 12,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras6_tx",
.min_signal = 13,
.max_signal = 13,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras7_rx",
.min_signal = 14,
.max_signal = 14,
.muxval = 1,
.periph_buses = PL08X_AHB1,
}, {
.bus_id = "ras7_tx",
.min_signal = 15,
.max_signal = 15,
.muxval = 1,
.periph_buses = PL08X_AHB1,
},
};
/* uart devices plat data */
static struct amba_pl011_data spear310_uart_data[] = {
{
.dma_filter = pl08x_filter_id,
.dma_tx_param = "uart1_tx",
.dma_rx_param = "uart1_rx",
}, {
.dma_filter = pl08x_filter_id,
.dma_tx_param = "uart2_tx",
.dma_rx_param = "uart2_rx",
}, {
.dma_filter = pl08x_filter_id,
.dma_tx_param = "uart3_tx",
.dma_rx_param = "uart3_rx",
}, {
.dma_filter = pl08x_filter_id,
.dma_tx_param = "uart4_tx",
.dma_rx_param = "uart4_rx",
}, {
.dma_filter = pl08x_filter_id,
.dma_tx_param = "uart5_tx",
.dma_rx_param = "uart5_rx",
},
};
/* Add SPEAr310 auxdata to pass platform data */
static struct of_dev_auxdata spear310_auxdata_lookup[] __initdata = {
OF_DEV_AUXDATA("arm,pl022", SPEAR3XX_ICM1_SSP_BASE, NULL,
&pl022_plat_data),
OF_DEV_AUXDATA("arm,pl080", SPEAR3XX_ICM3_DMA_BASE, NULL,
&pl080_plat_data),
OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART1_BASE, NULL,
&spear310_uart_data[0]),
OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART2_BASE, NULL,
&spear310_uart_data[1]),
OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART3_BASE, NULL,
&spear310_uart_data[2]),
OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART4_BASE, NULL,
&spear310_uart_data[3]),
OF_DEV_AUXDATA("arm,pl011", SPEAR310_UART5_BASE, NULL,
&spear310_uart_data[4]),
{}
};
static void __init spear310_dt_init(void)
{
void __iomem *base;
int ret;
pl080_plat_data.slave_channels = spear310_dma_info;
pl080_plat_data.num_slave_channels = ARRAY_SIZE(spear310_dma_info);
of_platform_populate(NULL, of_default_bus_match_table,
spear310_auxdata_lookup, NULL);
/* shared irq registration */
base = ioremap(SPEAR310_SOC_CONFIG_BASE, SZ_4K);
if (base) {
/* shirq 1 */
shirq_ras1.regs.base = base;
ret = spear_shirq_register(&shirq_ras1);
if (ret)
pr_err("Error registering Shared IRQ 1\n");
/* shirq 2 */
shirq_ras2.regs.base = base;
ret = spear_shirq_register(&shirq_ras2);
if (ret)
pr_err("Error registering Shared IRQ 2\n");
/* shirq 3 */
shirq_ras3.regs.base = base;
ret = spear_shirq_register(&shirq_ras3);
if (ret)
pr_err("Error registering Shared IRQ 3\n");
/* shirq 4 */
shirq_intrcomm_ras.regs.base = base;
ret = spear_shirq_register(&shirq_intrcomm_ras);
if (ret)
pr_err("Error registering Shared IRQ 4\n");
}
}
static const char * const spear310_dt_board_compat[] = {
"st,spear310",
"st,spear310-evb",
NULL,
};
static void __init spear310_map_io(void)
{
spear3xx_map_io();
}
DT_MACHINE_START(SPEAR310_DT, "ST SPEAr310 SoC with Flattened Device Tree")
.map_io = spear310_map_io,
.init_irq = spear3xx_dt_init_irq,
.handle_irq = vic_handle_irq,
.timer = &spear3xx_timer,
.init_machine = spear310_dt_init,
.restart = spear_restart,
.dt_compat = spear310_dt_board_compat,
MACHINE_END
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