| /* |
| * arch/arm/mach-spear3xx/spear3xx.c |
| * |
| * SPEAr3XX machines common 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) "SPEAr3xx: " fmt |
| |
| #include <linux/amba/pl022.h> |
| #include <linux/amba/pl08x.h> |
| #include <linux/irqchip/spear-shirq.h> |
| #include <linux/of_irq.h> |
| #include <linux/io.h> |
| #include <asm/hardware/pl080.h> |
| #include <asm/hardware/vic.h> |
| #include <plat/pl080.h> |
| #include <mach/generic.h> |
| #include <mach/spear.h> |
| |
| /* ssp device registration */ |
| struct pl022_ssp_controller pl022_plat_data = { |
| .bus_id = 0, |
| .enable_dma = 1, |
| .dma_filter = pl08x_filter_id, |
| .dma_tx_param = "ssp0_tx", |
| .dma_rx_param = "ssp0_rx", |
| /* |
| * This is number of spi devices that can be connected to spi. There are |
| * two type of chipselects on which slave devices can work. One is chip |
| * select provided by spi masters other is controlled through external |
| * gpio's. We can't use chipselect provided from spi master (because as |
| * soon as FIFO becomes empty, CS is disabled and transfer ends). So |
| * this number now depends on number of gpios available for spi. each |
| * slave on each master requires a separate gpio pin. |
| */ |
| .num_chipselect = 2, |
| }; |
| |
| /* dmac device registration */ |
| struct pl08x_platform_data pl080_plat_data = { |
| .memcpy_channel = { |
| .bus_id = "memcpy", |
| .cctl_memcpy = |
| (PL080_BSIZE_16 << PL080_CONTROL_SB_SIZE_SHIFT | \ |
| PL080_BSIZE_16 << PL080_CONTROL_DB_SIZE_SHIFT | \ |
| PL080_WIDTH_32BIT << PL080_CONTROL_SWIDTH_SHIFT | \ |
| PL080_WIDTH_32BIT << PL080_CONTROL_DWIDTH_SHIFT | \ |
| PL080_CONTROL_PROT_BUFF | PL080_CONTROL_PROT_CACHE | \ |
| PL080_CONTROL_PROT_SYS), |
| }, |
| .lli_buses = PL08X_AHB1, |
| .mem_buses = PL08X_AHB1, |
| .get_signal = pl080_get_signal, |
| .put_signal = pl080_put_signal, |
| }; |
| |
| /* |
| * Following will create 16MB static virtual/physical mappings |
| * PHYSICAL VIRTUAL |
| * 0xD0000000 0xFD000000 |
| * 0xFC000000 0xFC000000 |
| */ |
| struct map_desc spear3xx_io_desc[] __initdata = { |
| { |
| .virtual = VA_SPEAR3XX_ICM1_2_BASE, |
| .pfn = __phys_to_pfn(SPEAR3XX_ICM1_2_BASE), |
| .length = SZ_16M, |
| .type = MT_DEVICE |
| }, { |
| .virtual = VA_SPEAR3XX_ICM3_SMI_CTRL_BASE, |
| .pfn = __phys_to_pfn(SPEAR3XX_ICM3_SMI_CTRL_BASE), |
| .length = SZ_16M, |
| .type = MT_DEVICE |
| }, |
| }; |
| |
| /* This will create static memory mapping for selected devices */ |
| void __init spear3xx_map_io(void) |
| { |
| iotable_init(spear3xx_io_desc, ARRAY_SIZE(spear3xx_io_desc)); |
| } |
| |
| static void __init spear3xx_timer_init(void) |
| { |
| char pclk_name[] = "pll3_clk"; |
| struct clk *gpt_clk, *pclk; |
| |
| spear3xx_clk_init(); |
| |
| /* get the system timer clock */ |
| gpt_clk = clk_get_sys("gpt0", NULL); |
| if (IS_ERR(gpt_clk)) { |
| pr_err("%s:couldn't get clk for gpt\n", __func__); |
| BUG(); |
| } |
| |
| /* get the suitable parent clock for timer*/ |
| pclk = clk_get(NULL, pclk_name); |
| if (IS_ERR(pclk)) { |
| pr_err("%s:couldn't get %s as parent for gpt\n", |
| __func__, pclk_name); |
| BUG(); |
| } |
| |
| clk_set_parent(gpt_clk, pclk); |
| clk_put(gpt_clk); |
| clk_put(pclk); |
| |
| spear_setup_of_timer(); |
| } |
| |
| struct sys_timer spear3xx_timer = { |
| .init = spear3xx_timer_init, |
| }; |
| |
| static const struct of_device_id vic_of_match[] __initconst = { |
| { .compatible = "arm,pl190-vic", .data = vic_of_init, }, |
| { .compatible = "st,spear300-shirq", .data = spear300_shirq_of_init, }, |
| { .compatible = "st,spear310-shirq", .data = spear310_shirq_of_init, }, |
| { .compatible = "st,spear320-shirq", .data = spear320_shirq_of_init, }, |
| { /* Sentinel */ } |
| }; |
| |
| void __init spear3xx_dt_init_irq(void) |
| { |
| of_irq_init(vic_of_match); |
| } |