diff options
Diffstat (limited to 'arch/arm/mach-shmobile/setup-r8a7740.c')
| -rw-r--r-- | arch/arm/mach-shmobile/setup-r8a7740.c | 859 |
1 files changed, 859 insertions, 0 deletions
diff --git a/arch/arm/mach-shmobile/setup-r8a7740.c b/arch/arm/mach-shmobile/setup-r8a7740.c new file mode 100644 index 000000000..9832e4839 --- /dev/null +++ b/arch/arm/mach-shmobile/setup-r8a7740.c @@ -0,0 +1,859 @@ +/* + * R8A7740 processor support + * + * Copyright (C) 2011 Renesas Solutions Corp. + * Copyright (C) 2011 Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; version 2 of the License. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + */ +#include <linux/delay.h> +#include <linux/dma-mapping.h> +#include <linux/kernel.h> +#include <linux/init.h> +#include <linux/io.h> +#include <linux/irqchip.h> +#include <linux/irqchip/arm-gic.h> +#include <linux/platform_data/irq-renesas-intc-irqpin.h> +#include <linux/platform_device.h> +#include <linux/of_platform.h> +#include <linux/serial_sci.h> +#include <linux/sh_dma.h> +#include <linux/sh_timer.h> +#include <linux/platform_data/sh_ipmmu.h> + +#include <asm/mach-types.h> +#include <asm/mach/map.h> +#include <asm/mach/arch.h> +#include <asm/mach/time.h> +#include <asm/hardware/cache-l2x0.h> + +#include "common.h" +#include "dma-register.h" +#include "irqs.h" +#include "pm-rmobile.h" +#include "r8a7740.h" + +static struct map_desc r8a7740_io_desc[] __initdata = { + /* + * for CPGA/INTC/PFC + * 0xe6000000-0xefffffff -> 0xe6000000-0xefffffff + */ + { + .virtual = 0xe6000000, + .pfn = __phys_to_pfn(0xe6000000), + .length = 160 << 20, + .type = MT_DEVICE_NONSHARED + }, +#ifdef CONFIG_CACHE_L2X0 + /* + * for l2x0_init() + * 0xf0100000-0xf0101000 -> 0xf0002000-0xf0003000 + */ + { + .virtual = 0xf0002000, + .pfn = __phys_to_pfn(0xf0100000), + .length = PAGE_SIZE, + .type = MT_DEVICE_NONSHARED + }, +#endif +}; + +void __init r8a7740_map_io(void) +{ + debug_ll_io_init(); + iotable_init(r8a7740_io_desc, ARRAY_SIZE(r8a7740_io_desc)); +} + +/* PFC */ +static const struct resource pfc_resources[] = { + DEFINE_RES_MEM(0xe6050000, 0x8000), + DEFINE_RES_MEM(0xe605800c, 0x0020), +}; + +void __init r8a7740_pinmux_init(void) +{ + platform_device_register_simple("pfc-r8a7740", -1, pfc_resources, + ARRAY_SIZE(pfc_resources)); +} + +static struct renesas_intc_irqpin_config irqpin0_platform_data = { + .irq_base = irq_pin(0), /* IRQ0 -> IRQ7 */ +}; + +static struct resource irqpin0_resources[] = { + DEFINE_RES_MEM(0xe6900000, 4), /* ICR1A */ + DEFINE_RES_MEM(0xe6900010, 4), /* INTPRI00A */ + DEFINE_RES_MEM(0xe6900020, 1), /* INTREQ00A */ + DEFINE_RES_MEM(0xe6900040, 1), /* INTMSK00A */ + DEFINE_RES_MEM(0xe6900060, 1), /* INTMSKCLR00A */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ0 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ1 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ2 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ3 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ4 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ5 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ6 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ7 */ +}; + +static struct platform_device irqpin0_device = { + .name = "renesas_intc_irqpin", + .id = 0, + .resource = irqpin0_resources, + .num_resources = ARRAY_SIZE(irqpin0_resources), + .dev = { + .platform_data = &irqpin0_platform_data, + }, +}; + +static struct renesas_intc_irqpin_config irqpin1_platform_data = { + .irq_base = irq_pin(8), /* IRQ8 -> IRQ15 */ +}; + +static struct resource irqpin1_resources[] = { + DEFINE_RES_MEM(0xe6900004, 4), /* ICR2A */ + DEFINE_RES_MEM(0xe6900014, 4), /* INTPRI10A */ + DEFINE_RES_MEM(0xe6900024, 1), /* INTREQ10A */ + DEFINE_RES_MEM(0xe6900044, 1), /* INTMSK10A */ + DEFINE_RES_MEM(0xe6900064, 1), /* INTMSKCLR10A */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ8 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ9 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ10 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ11 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ12 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ13 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ14 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ15 */ +}; + +static struct platform_device irqpin1_device = { + .name = "renesas_intc_irqpin", + .id = 1, + .resource = irqpin1_resources, + .num_resources = ARRAY_SIZE(irqpin1_resources), + .dev = { + .platform_data = &irqpin1_platform_data, + }, +}; + +static struct renesas_intc_irqpin_config irqpin2_platform_data = { + .irq_base = irq_pin(16), /* IRQ16 -> IRQ23 */ +}; + +static struct resource irqpin2_resources[] = { + DEFINE_RES_MEM(0xe6900008, 4), /* ICR3A */ + DEFINE_RES_MEM(0xe6900018, 4), /* INTPRI30A */ + DEFINE_RES_MEM(0xe6900028, 1), /* INTREQ30A */ + DEFINE_RES_MEM(0xe6900048, 1), /* INTMSK30A */ + DEFINE_RES_MEM(0xe6900068, 1), /* INTMSKCLR30A */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ16 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ17 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ18 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ19 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ20 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ21 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ22 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ23 */ +}; + +static struct platform_device irqpin2_device = { + .name = "renesas_intc_irqpin", + .id = 2, + .resource = irqpin2_resources, + .num_resources = ARRAY_SIZE(irqpin2_resources), + .dev = { + .platform_data = &irqpin2_platform_data, + }, +}; + +static struct renesas_intc_irqpin_config irqpin3_platform_data = { + .irq_base = irq_pin(24), /* IRQ24 -> IRQ31 */ +}; + +static struct resource irqpin3_resources[] = { + DEFINE_RES_MEM(0xe690000c, 4), /* ICR3A */ + DEFINE_RES_MEM(0xe690001c, 4), /* INTPRI30A */ + DEFINE_RES_MEM(0xe690002c, 1), /* INTREQ30A */ + DEFINE_RES_MEM(0xe690004c, 1), /* INTMSK30A */ + DEFINE_RES_MEM(0xe690006c, 1), /* INTMSKCLR30A */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ24 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ25 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ26 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ27 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ28 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ29 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ30 */ + DEFINE_RES_IRQ(gic_spi(149)), /* IRQ31 */ +}; + +static struct platform_device irqpin3_device = { + .name = "renesas_intc_irqpin", + .id = 3, + .resource = irqpin3_resources, + .num_resources = ARRAY_SIZE(irqpin3_resources), + .dev = { + .platform_data = &irqpin3_platform_data, + }, +}; + +/* SCIF */ +#define R8A7740_SCIF(scif_type, index, baseaddr, irq) \ +static struct plat_sci_port scif##index##_platform_data = { \ + .type = scif_type, \ + .flags = UPF_BOOT_AUTOCONF, \ + .scscr = SCSCR_RE | SCSCR_TE, \ +}; \ + \ +static struct resource scif##index##_resources[] = { \ + DEFINE_RES_MEM(baseaddr, 0x100), \ + DEFINE_RES_IRQ(irq), \ +}; \ + \ +static struct platform_device scif##index##_device = { \ + .name = "sh-sci", \ + .id = index, \ + .resource = scif##index##_resources, \ + .num_resources = ARRAY_SIZE(scif##index##_resources), \ + .dev = { \ + .platform_data = &scif##index##_platform_data, \ + }, \ +} + +R8A7740_SCIF(PORT_SCIFA, 0, 0xe6c40000, gic_spi(100)); +R8A7740_SCIF(PORT_SCIFA, 1, 0xe6c50000, gic_spi(101)); +R8A7740_SCIF(PORT_SCIFA, 2, 0xe6c60000, gic_spi(102)); +R8A7740_SCIF(PORT_SCIFA, 3, 0xe6c70000, gic_spi(103)); +R8A7740_SCIF(PORT_SCIFA, 4, 0xe6c80000, gic_spi(104)); +R8A7740_SCIF(PORT_SCIFA, 5, 0xe6cb0000, gic_spi(105)); +R8A7740_SCIF(PORT_SCIFA, 6, 0xe6cc0000, gic_spi(106)); +R8A7740_SCIF(PORT_SCIFA, 7, 0xe6cd0000, gic_spi(107)); +R8A7740_SCIF(PORT_SCIFB, 8, 0xe6c30000, gic_spi(108)); + +/* CMT */ +static struct sh_timer_config cmt1_platform_data = { + .channels_mask = 0x3f, +}; + +static struct resource cmt1_resources[] = { + DEFINE_RES_MEM(0xe6138000, 0x170), + DEFINE_RES_IRQ(gic_spi(58)), +}; + +static struct platform_device cmt1_device = { + .name = "sh-cmt-48", + .id = 1, + .dev = { + .platform_data = &cmt1_platform_data, + }, + .resource = cmt1_resources, + .num_resources = ARRAY_SIZE(cmt1_resources), +}; + +/* TMU */ +static struct sh_timer_config tmu0_platform_data = { + .channels_mask = 7, +}; + +static struct resource tmu0_resources[] = { + DEFINE_RES_MEM(0xfff80000, 0x2c), + DEFINE_RES_IRQ(gic_spi(198)), + DEFINE_RES_IRQ(gic_spi(199)), + DEFINE_RES_IRQ(gic_spi(200)), +}; + +static struct platform_device tmu0_device = { + .name = "sh-tmu", + .id = 0, + .dev = { + .platform_data = &tmu0_platform_data, + }, + .resource = tmu0_resources, + .num_resources = ARRAY_SIZE(tmu0_resources), +}; + +/* IPMMUI (an IPMMU module for ICB/LMB) */ +static struct resource ipmmu_resources[] = { + [0] = { + .name = "IPMMUI", + .start = 0xfe951000, + .end = 0xfe9510ff, + .flags = IORESOURCE_MEM, + }, +}; + +static const char * const ipmmu_dev_names[] = { + "sh_mobile_lcdc_fb.0", + "sh_mobile_lcdc_fb.1", + "sh_mobile_ceu.0", +}; + +static struct shmobile_ipmmu_platform_data ipmmu_platform_data = { + .dev_names = ipmmu_dev_names, + .num_dev_names = ARRAY_SIZE(ipmmu_dev_names), +}; + +static struct platform_device ipmmu_device = { + .name = "ipmmu", + .id = -1, + .dev = { + .platform_data = &ipmmu_platform_data, + }, + .resource = ipmmu_resources, + .num_resources = ARRAY_SIZE(ipmmu_resources), +}; + +static struct platform_device *r8a7740_early_devices[] __initdata = { + &scif0_device, + &scif1_device, + &scif2_device, + &scif3_device, + &scif4_device, + &scif5_device, + &scif6_device, + &scif7_device, + &scif8_device, + &irqpin0_device, + &irqpin1_device, + &irqpin2_device, + &irqpin3_device, + &tmu0_device, + &ipmmu_device, + &cmt1_device, +}; + +/* DMA */ +static const struct sh_dmae_slave_config r8a7740_dmae_slaves[] = { + { + .slave_id = SHDMA_SLAVE_SDHI0_TX, + .addr = 0xe6850030, + .chcr = CHCR_TX(XMIT_SZ_16BIT), + .mid_rid = 0xc1, + }, { + .slave_id = SHDMA_SLAVE_SDHI0_RX, + .addr = 0xe6850030, + .chcr = CHCR_RX(XMIT_SZ_16BIT), + .mid_rid = 0xc2, + }, { + .slave_id = SHDMA_SLAVE_SDHI1_TX, + .addr = 0xe6860030, + .chcr = CHCR_TX(XMIT_SZ_16BIT), + .mid_rid = 0xc9, + }, { + .slave_id = SHDMA_SLAVE_SDHI1_RX, + .addr = 0xe6860030, + .chcr = CHCR_RX(XMIT_SZ_16BIT), + .mid_rid = 0xca, + }, { + .slave_id = SHDMA_SLAVE_SDHI2_TX, + .addr = 0xe6870030, + .chcr = CHCR_TX(XMIT_SZ_16BIT), + .mid_rid = 0xcd, + }, { + .slave_id = SHDMA_SLAVE_SDHI2_RX, + .addr = 0xe6870030, + .chcr = CHCR_RX(XMIT_SZ_16BIT), + .mid_rid = 0xce, + }, { + .slave_id = SHDMA_SLAVE_FSIA_TX, + .addr = 0xfe1f0024, + .chcr = CHCR_TX(XMIT_SZ_32BIT), + .mid_rid = 0xb1, + }, { + .slave_id = SHDMA_SLAVE_FSIA_RX, + .addr = 0xfe1f0020, + .chcr = CHCR_RX(XMIT_SZ_32BIT), + .mid_rid = 0xb2, + }, { + .slave_id = SHDMA_SLAVE_FSIB_TX, + .addr = 0xfe1f0064, + .chcr = CHCR_TX(XMIT_SZ_32BIT), + .mid_rid = 0xb5, + }, { + .slave_id = SHDMA_SLAVE_MMCIF_TX, + .addr = 0xe6bd0034, + .chcr = CHCR_TX(XMIT_SZ_32BIT), + .mid_rid = 0xd1, + }, { + .slave_id = SHDMA_SLAVE_MMCIF_RX, + .addr = 0xe6bd0034, + .chcr = CHCR_RX(XMIT_SZ_32BIT), + .mid_rid = 0xd2, + }, +}; + +#define DMA_CHANNEL(a, b, c) \ +{ \ + .offset = a, \ + .dmars = b, \ + .dmars_bit = c, \ + .chclr_offset = (0x220 - 0x20) + a \ +} + +static const struct sh_dmae_channel r8a7740_dmae_channels[] = { + DMA_CHANNEL(0x00, 0, 0), + DMA_CHANNEL(0x10, 0, 8), + DMA_CHANNEL(0x20, 4, 0), + DMA_CHANNEL(0x30, 4, 8), + DMA_CHANNEL(0x50, 8, 0), + DMA_CHANNEL(0x60, 8, 8), +}; + +static struct sh_dmae_pdata dma_platform_data = { + .slave = r8a7740_dmae_slaves, + .slave_num = ARRAY_SIZE(r8a7740_dmae_slaves), + .channel = r8a7740_dmae_channels, + .channel_num = ARRAY_SIZE(r8a7740_dmae_channels), + .ts_low_shift = TS_LOW_SHIFT, + .ts_low_mask = TS_LOW_BIT << TS_LOW_SHIFT, + .ts_high_shift = TS_HI_SHIFT, + .ts_high_mask = TS_HI_BIT << TS_HI_SHIFT, + .ts_shift = dma_ts_shift, + .ts_shift_num = ARRAY_SIZE(dma_ts_shift), + .dmaor_init = DMAOR_DME, + .chclr_present = 1, +}; + +/* Resource order important! */ +static struct resource r8a7740_dmae0_resources[] = { + { + /* Channel registers and DMAOR */ + .start = 0xfe008020, + .end = 0xfe00828f, + .flags = IORESOURCE_MEM, + }, + { + /* DMARSx */ + .start = 0xfe009000, + .end = 0xfe00900b, + .flags = IORESOURCE_MEM, + }, + { + .name = "error_irq", + .start = gic_spi(34), + .end = gic_spi(34), + .flags = IORESOURCE_IRQ, + }, + { + /* IRQ for channels 0-5 */ + .start = gic_spi(28), + .end = gic_spi(33), + .flags = IORESOURCE_IRQ, + }, +}; + +/* Resource order important! */ +static struct resource r8a7740_dmae1_resources[] = { + { + /* Channel registers and DMAOR */ + .start = 0xfe018020, + .end = 0xfe01828f, + .flags = IORESOURCE_MEM, + }, + { + /* DMARSx */ + .start = 0xfe019000, + .end = 0xfe01900b, + .flags = IORESOURCE_MEM, + }, + { + .name = "error_irq", + .start = gic_spi(41), + .end = gic_spi(41), + .flags = IORESOURCE_IRQ, + }, + { + /* IRQ for channels 0-5 */ + .start = gic_spi(35), + .end = gic_spi(40), + .flags = IORESOURCE_IRQ, + }, +}; + +/* Resource order important! */ +static struct resource r8a7740_dmae2_resources[] = { + { + /* Channel registers and DMAOR */ + .start = 0xfe028020, + .end = 0xfe02828f, + .flags = IORESOURCE_MEM, + }, + { + /* DMARSx */ + .start = 0xfe029000, + .end = 0xfe02900b, + .flags = IORESOURCE_MEM, + }, + { + .name = "error_irq", + .start = gic_spi(48), + .end = gic_spi(48), + .flags = IORESOURCE_IRQ, + }, + { + /* IRQ for channels 0-5 */ + .start = gic_spi(42), + .end = gic_spi(47), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device dma0_device = { + .name = "sh-dma-engine", + .id = 0, + .resource = r8a7740_dmae0_resources, + .num_resources = ARRAY_SIZE(r8a7740_dmae0_resources), + .dev = { + .platform_data = &dma_platform_data, + }, +}; + +static struct platform_device dma1_device = { + .name = "sh-dma-engine", + .id = 1, + .resource = r8a7740_dmae1_resources, + .num_resources = ARRAY_SIZE(r8a7740_dmae1_resources), + .dev = { + .platform_data = &dma_platform_data, + }, +}; + +static struct platform_device dma2_device = { + .name = "sh-dma-engine", + .id = 2, + .resource = r8a7740_dmae2_resources, + .num_resources = ARRAY_SIZE(r8a7740_dmae2_resources), + .dev = { + .platform_data = &dma_platform_data, + }, +}; + +/* USB-DMAC */ +static const struct sh_dmae_channel r8a7740_usb_dma_channels[] = { + { + .offset = 0, + }, { + .offset = 0x20, + }, +}; + +static const struct sh_dmae_slave_config r8a7740_usb_dma_slaves[] = { + { + .slave_id = SHDMA_SLAVE_USBHS_TX, + .chcr = USBTS_INDEX2VAL(USBTS_XMIT_SZ_8BYTE), + }, { + .slave_id = SHDMA_SLAVE_USBHS_RX, + .chcr = USBTS_INDEX2VAL(USBTS_XMIT_SZ_8BYTE), + }, +}; + +static struct sh_dmae_pdata usb_dma_platform_data = { + .slave = r8a7740_usb_dma_slaves, + .slave_num = ARRAY_SIZE(r8a7740_usb_dma_slaves), + .channel = r8a7740_usb_dma_channels, + .channel_num = ARRAY_SIZE(r8a7740_usb_dma_channels), + .ts_low_shift = USBTS_LOW_SHIFT, + .ts_low_mask = USBTS_LOW_BIT << USBTS_LOW_SHIFT, + .ts_high_shift = USBTS_HI_SHIFT, + .ts_high_mask = USBTS_HI_BIT << USBTS_HI_SHIFT, + .ts_shift = dma_usbts_shift, + .ts_shift_num = ARRAY_SIZE(dma_usbts_shift), + .dmaor_init = DMAOR_DME, + .chcr_offset = 0x14, + .chcr_ie_bit = 1 << 5, + .dmaor_is_32bit = 1, + .needs_tend_set = 1, + .no_dmars = 1, + .slave_only = 1, +}; + +static struct resource r8a7740_usb_dma_resources[] = { + { + /* Channel registers and DMAOR */ + .start = 0xe68a0020, + .end = 0xe68a0064 - 1, + .flags = IORESOURCE_MEM, + }, + { + /* VCR/SWR/DMICR */ + .start = 0xe68a0000, + .end = 0xe68a0014 - 1, + .flags = IORESOURCE_MEM, + }, + { + /* IRQ for channels */ + .start = gic_spi(49), + .end = gic_spi(49), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device usb_dma_device = { + .name = "sh-dma-engine", + .id = 3, + .resource = r8a7740_usb_dma_resources, + .num_resources = ARRAY_SIZE(r8a7740_usb_dma_resources), + .dev = { + .platform_data = &usb_dma_platform_data, + }, +}; + +/* I2C */ +static struct resource i2c0_resources[] = { + [0] = { + .name = "IIC0", + .start = 0xfff20000, + .end = 0xfff20425 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = gic_spi(201), + .end = gic_spi(204), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct resource i2c1_resources[] = { + [0] = { + .name = "IIC1", + .start = 0xe6c20000, + .end = 0xe6c20425 - 1, + .flags = IORESOURCE_MEM, + }, + [1] = { + .start = gic_spi(70), /* IIC1_ALI1 */ + .end = gic_spi(73), /* IIC1_DTEI1 */ + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device i2c0_device = { + .name = "i2c-sh_mobile", + .id = 0, + .resource = i2c0_resources, + .num_resources = ARRAY_SIZE(i2c0_resources), +}; + +static struct platform_device i2c1_device = { + .name = "i2c-sh_mobile", + .id = 1, + .resource = i2c1_resources, + .num_resources = ARRAY_SIZE(i2c1_resources), +}; + +static struct resource pmu_resources[] = { + [0] = { + .start = gic_spi(83), + .end = gic_spi(83), + .flags = IORESOURCE_IRQ, + }, +}; + +static struct platform_device pmu_device = { + .name = "armv7-pmu", + .id = -1, + .num_resources = ARRAY_SIZE(pmu_resources), + .resource = pmu_resources, +}; + +static struct platform_device *r8a7740_late_devices[] __initdata = { + &i2c0_device, + &i2c1_device, + &dma0_device, + &dma1_device, + &dma2_device, + &usb_dma_device, + &pmu_device, +}; + +/* + * r8a7740 chip has lasting errata on MERAM buffer. + * this is work-around for it. + * see + * "Media RAM (MERAM)" on r8a7740 documentation + */ +#define MEBUFCNTR 0xFE950098 +void __init r8a7740_meram_workaround(void) +{ + void __iomem *reg; + + reg = ioremap_nocache(MEBUFCNTR, 4); + if (reg) { + iowrite32(0x01600164, reg); + iounmap(reg); + } +} + +#define ICCR 0x0004 +#define ICSTART 0x0070 + +#define i2c_read(reg, offset) ioread8(reg + offset) +#define i2c_write(reg, offset, data) iowrite8(data, reg + offset) + +/* + * r8a7740 chip has lasting errata on I2C I/O pad reset. + * this is work-around for it. + */ +static void r8a7740_i2c_workaround(struct platform_device *pdev) +{ + struct resource *res; + void __iomem *reg; + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (unlikely(!res)) { + pr_err("r8a7740 i2c workaround fail (cannot find resource)\n"); + return; + } + + reg = ioremap(res->start, resource_size(res)); + if (unlikely(!reg)) { + pr_err("r8a7740 i2c workaround fail (cannot map IO)\n"); + return; + } + + i2c_write(reg, ICCR, i2c_read(reg, ICCR) | 0x80); + i2c_read(reg, ICCR); /* dummy read */ + + i2c_write(reg, ICSTART, i2c_read(reg, ICSTART) | 0x10); + i2c_read(reg, ICSTART); /* dummy read */ + + udelay(10); + + i2c_write(reg, ICCR, 0x01); + i2c_write(reg, ICSTART, 0x00); + + udelay(10); + + i2c_write(reg, ICCR, 0x10); + udelay(10); + i2c_write(reg, ICCR, 0x00); + udelay(10); + i2c_write(reg, ICCR, 0x10); + udelay(10); + + iounmap(reg); +} + +void __init r8a7740_add_standard_devices(void) +{ + static struct pm_domain_device domain_devices[] __initdata = { + { "A4R", &tmu0_device }, + { "A4R", &i2c0_device }, + { "A4S", &irqpin0_device }, + { "A4S", &irqpin1_device }, + { "A4S", &irqpin2_device }, + { "A4S", &irqpin3_device }, + { "A3SP", &scif0_device }, + { "A3SP", &scif1_device }, + { "A3SP", &scif2_device }, + { "A3SP", &scif3_device }, + { "A3SP", &scif4_device }, + { "A3SP", &scif5_device }, + { "A3SP", &scif6_device }, + { "A3SP", &scif7_device }, + { "A3SP", &scif8_device }, + { "A3SP", &i2c1_device }, + { "A3SP", &ipmmu_device }, + { "A3SP", &dma0_device }, + { "A3SP", &dma1_device }, + { "A3SP", &dma2_device }, + { "A3SP", &usb_dma_device }, + }; + + /* I2C work-around */ + r8a7740_i2c_workaround(&i2c0_device); + r8a7740_i2c_workaround(&i2c1_device); + + r8a7740_init_pm_domains(); + + /* add devices */ + platform_add_devices(r8a7740_early_devices, + ARRAY_SIZE(r8a7740_early_devices)); + platform_add_devices(r8a7740_late_devices, + ARRAY_SIZE(r8a7740_late_devices)); + + /* add devices to PM domain */ + rmobile_add_devices_to_domains(domain_devices, + ARRAY_SIZE(domain_devices)); +} + +void __init r8a7740_add_early_devices(void) +{ + early_platform_add_devices(r8a7740_early_devices, + ARRAY_SIZE(r8a7740_early_devices)); + + /* setup early console here as well */ + shmobile_setup_console(); +} + +#ifdef CONFIG_USE_OF + +void __init r8a7740_init_irq_of(void) +{ + void __iomem *intc_prio_base = ioremap_nocache(0xe6900010, 0x10); + void __iomem *intc_msk_base = ioremap_nocache(0xe6900040, 0x10); + void __iomem *pfc_inta_ctrl = ioremap_nocache(0xe605807c, 0x4); + +#ifdef CONFIG_ARCH_SHMOBILE_LEGACY + void __iomem *gic_dist_base = ioremap_nocache(0xc2800000, 0x1000); + void __iomem *gic_cpu_base = ioremap_nocache(0xc2000000, 0x1000); + + gic_init(0, 29, gic_dist_base, gic_cpu_base); +#else + irqchip_init(); +#endif + + /* route signals to GIC */ + iowrite32(0x0, pfc_inta_ctrl); + + /* + * To mask the shared interrupt to SPI 149 we must ensure to set + * PRIO *and* MASK. Else we run into IRQ floods when registering + * the intc_irqpin devices + */ + iowrite32(0x0, intc_prio_base + 0x0); + iowrite32(0x0, intc_prio_base + 0x4); + iowrite32(0x0, intc_prio_base + 0x8); + iowrite32(0x0, intc_prio_base + 0xc); + iowrite8(0xff, intc_msk_base + 0x0); + iowrite8(0xff, intc_msk_base + 0x4); + iowrite8(0xff, intc_msk_base + 0x8); + iowrite8(0xff, intc_msk_base + 0xc); + + iounmap(intc_prio_base); + iounmap(intc_msk_base); + iounmap(pfc_inta_ctrl); +} + +static void __init r8a7740_generic_init(void) +{ + r8a7740_meram_workaround(); + +#ifdef CONFIG_CACHE_L2X0 + /* Shared attribute override enable, 32K*8way */ + l2x0_init(IOMEM(0xf0002000), 0x00400000, 0xc20f0fff); +#endif + of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL); +} + +static const char *r8a7740_boards_compat_dt[] __initdata = { + "renesas,r8a7740", + NULL, +}; + +DT_MACHINE_START(R8A7740_DT, "Generic R8A7740 (Flattened Device Tree)") + .map_io = r8a7740_map_io, + .init_early = shmobile_init_delay, + .init_irq = r8a7740_init_irq_of, + .init_machine = r8a7740_generic_init, + .init_late = shmobile_init_late, + .dt_compat = r8a7740_boards_compat_dt, +MACHINE_END + +#endif /* CONFIG_USE_OF */ |