761 lines
17 KiB
C
761 lines
17 KiB
C
/*
|
|
* 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.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
|
|
*/
|
|
#include <linux/delay.h>
|
|
#include <linux/dma-mapping.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/init.h>
|
|
#include <linux/io.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/dma-mapping.h>
|
|
#include <mach/dma-register.h>
|
|
#include <mach/r8a7740.h>
|
|
#include <mach/pm-rmobile.h>
|
|
#include <mach/common.h>
|
|
#include <mach/irqs.h>
|
|
#include <asm/mach-types.h>
|
|
#include <asm/mach/map.h>
|
|
#include <asm/mach/arch.h>
|
|
#include <asm/mach/time.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)
|
|
{
|
|
iotable_init(r8a7740_io_desc, ARRAY_SIZE(r8a7740_io_desc));
|
|
|
|
/*
|
|
* DMA memory at 0xff200000 - 0xffdfffff. The default 2MB size isn't
|
|
* enough to allocate the frame buffer memory.
|
|
*/
|
|
init_consistent_dma_size(12 << 20);
|
|
}
|
|
|
|
/* SCIFA0 */
|
|
static struct plat_sci_port scif0_platform_data = {
|
|
.mapbase = 0xe6c40000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c00)),
|
|
};
|
|
|
|
static struct platform_device scif0_device = {
|
|
.name = "sh-sci",
|
|
.id = 0,
|
|
.dev = {
|
|
.platform_data = &scif0_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA1 */
|
|
static struct plat_sci_port scif1_platform_data = {
|
|
.mapbase = 0xe6c50000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c20)),
|
|
};
|
|
|
|
static struct platform_device scif1_device = {
|
|
.name = "sh-sci",
|
|
.id = 1,
|
|
.dev = {
|
|
.platform_data = &scif1_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA2 */
|
|
static struct plat_sci_port scif2_platform_data = {
|
|
.mapbase = 0xe6c60000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c40)),
|
|
};
|
|
|
|
static struct platform_device scif2_device = {
|
|
.name = "sh-sci",
|
|
.id = 2,
|
|
.dev = {
|
|
.platform_data = &scif2_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA3 */
|
|
static struct plat_sci_port scif3_platform_data = {
|
|
.mapbase = 0xe6c70000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0c60)),
|
|
};
|
|
|
|
static struct platform_device scif3_device = {
|
|
.name = "sh-sci",
|
|
.id = 3,
|
|
.dev = {
|
|
.platform_data = &scif3_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA4 */
|
|
static struct plat_sci_port scif4_platform_data = {
|
|
.mapbase = 0xe6c80000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d20)),
|
|
};
|
|
|
|
static struct platform_device scif4_device = {
|
|
.name = "sh-sci",
|
|
.id = 4,
|
|
.dev = {
|
|
.platform_data = &scif4_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA5 */
|
|
static struct plat_sci_port scif5_platform_data = {
|
|
.mapbase = 0xe6cb0000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d40)),
|
|
};
|
|
|
|
static struct platform_device scif5_device = {
|
|
.name = "sh-sci",
|
|
.id = 5,
|
|
.dev = {
|
|
.platform_data = &scif5_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA6 */
|
|
static struct plat_sci_port scif6_platform_data = {
|
|
.mapbase = 0xe6cc0000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x04c0)),
|
|
};
|
|
|
|
static struct platform_device scif6_device = {
|
|
.name = "sh-sci",
|
|
.id = 6,
|
|
.dev = {
|
|
.platform_data = &scif6_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFA7 */
|
|
static struct plat_sci_port scif7_platform_data = {
|
|
.mapbase = 0xe6cd0000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFA,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x04e0)),
|
|
};
|
|
|
|
static struct platform_device scif7_device = {
|
|
.name = "sh-sci",
|
|
.id = 7,
|
|
.dev = {
|
|
.platform_data = &scif7_platform_data,
|
|
},
|
|
};
|
|
|
|
/* SCIFB */
|
|
static struct plat_sci_port scifb_platform_data = {
|
|
.mapbase = 0xe6c30000,
|
|
.flags = UPF_BOOT_AUTOCONF,
|
|
.scscr = SCSCR_RE | SCSCR_TE,
|
|
.scbrr_algo_id = SCBRR_ALGO_4,
|
|
.type = PORT_SCIFB,
|
|
.irqs = SCIx_IRQ_MUXED(evt2irq(0x0d60)),
|
|
};
|
|
|
|
static struct platform_device scifb_device = {
|
|
.name = "sh-sci",
|
|
.id = 8,
|
|
.dev = {
|
|
.platform_data = &scifb_platform_data,
|
|
},
|
|
};
|
|
|
|
/* CMT */
|
|
static struct sh_timer_config cmt10_platform_data = {
|
|
.name = "CMT10",
|
|
.channel_offset = 0x10,
|
|
.timer_bit = 0,
|
|
.clockevent_rating = 125,
|
|
.clocksource_rating = 125,
|
|
};
|
|
|
|
static struct resource cmt10_resources[] = {
|
|
[0] = {
|
|
.name = "CMT10",
|
|
.start = 0xe6138010,
|
|
.end = 0xe613801b,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = evt2irq(0x0b00),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct platform_device cmt10_device = {
|
|
.name = "sh_cmt",
|
|
.id = 10,
|
|
.dev = {
|
|
.platform_data = &cmt10_platform_data,
|
|
},
|
|
.resource = cmt10_resources,
|
|
.num_resources = ARRAY_SIZE(cmt10_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,
|
|
&scifb_device,
|
|
&cmt10_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,
|
|
},
|
|
};
|
|
|
|
#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 = evt2irq(0x20c0),
|
|
.end = evt2irq(0x20c0),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
/* IRQ for channels 0-5 */
|
|
.start = evt2irq(0x2000),
|
|
.end = evt2irq(0x20a0),
|
|
.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 = evt2irq(0x21c0),
|
|
.end = evt2irq(0x21c0),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
/* IRQ for channels 0-5 */
|
|
.start = evt2irq(0x2100),
|
|
.end = evt2irq(0x21a0),
|
|
.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 = evt2irq(0x22c0),
|
|
.end = evt2irq(0x22c0),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
{
|
|
/* IRQ for channels 0-5 */
|
|
.start = evt2irq(0x2200),
|
|
.end = evt2irq(0x22a0),
|
|
.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 = evt2irq(0x0a00),
|
|
.end = evt2irq(0x0a00),
|
|
.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 = intcs_evt2irq(0xe00),
|
|
.end = intcs_evt2irq(0xe60),
|
|
.flags = IORESOURCE_IRQ,
|
|
},
|
|
};
|
|
|
|
static struct resource i2c1_resources[] = {
|
|
[0] = {
|
|
.name = "IIC1",
|
|
.start = 0xe6c20000,
|
|
.end = 0xe6c20425 - 1,
|
|
.flags = IORESOURCE_MEM,
|
|
},
|
|
[1] = {
|
|
.start = evt2irq(0x780), /* IIC1_ALI1 */
|
|
.end = evt2irq(0x7e0), /* 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 platform_device *r8a7740_late_devices[] __initdata = {
|
|
&i2c0_device,
|
|
&i2c1_device,
|
|
&dma0_device,
|
|
&dma1_device,
|
|
&dma2_device,
|
|
&usb_dma_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 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)
|
|
{
|
|
/* 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_device_to_domain("A3SP", &scif0_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif1_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif2_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif3_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif4_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif5_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif6_device);
|
|
rmobile_add_device_to_domain("A3SP", &scif7_device);
|
|
rmobile_add_device_to_domain("A3SP", &scifb_device);
|
|
rmobile_add_device_to_domain("A3SP", &i2c1_device);
|
|
}
|
|
|
|
static void __init r8a7740_earlytimer_init(void)
|
|
{
|
|
r8a7740_clock_init(0);
|
|
shmobile_earlytimer_init();
|
|
}
|
|
|
|
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();
|
|
|
|
/* override timer setup with soc-specific code */
|
|
shmobile_timer.init = r8a7740_earlytimer_init;
|
|
}
|
|
|
|
#ifdef CONFIG_USE_OF
|
|
|
|
void __init r8a7740_add_early_devices_dt(void)
|
|
{
|
|
shmobile_setup_delay(800, 1, 3); /* Cortex-A9 @ 800MHz */
|
|
|
|
early_platform_add_devices(r8a7740_early_devices,
|
|
ARRAY_SIZE(r8a7740_early_devices));
|
|
|
|
/* setup early console here as well */
|
|
shmobile_setup_console();
|
|
}
|
|
|
|
static const struct of_dev_auxdata r8a7740_auxdata_lookup[] __initconst = {
|
|
{ }
|
|
};
|
|
|
|
void __init r8a7740_add_standard_devices_dt(void)
|
|
{
|
|
/* clocks are setup late during boot in the case of DT */
|
|
r8a7740_clock_init(0);
|
|
|
|
platform_add_devices(r8a7740_early_devices,
|
|
ARRAY_SIZE(r8a7740_early_devices));
|
|
|
|
of_platform_populate(NULL, of_default_bus_match_table,
|
|
r8a7740_auxdata_lookup, NULL);
|
|
}
|
|
|
|
static const char *r8a7740_boards_compat_dt[] __initdata = {
|
|
"renesas,r8a7740",
|
|
NULL,
|
|
};
|
|
|
|
DT_MACHINE_START(SH7372_DT, "Generic R8A7740 (Flattened Device Tree)")
|
|
.map_io = r8a7740_map_io,
|
|
.init_early = r8a7740_add_early_devices_dt,
|
|
.init_irq = r8a7740_init_irq,
|
|
.handle_irq = shmobile_handle_irq_intc,
|
|
.init_machine = r8a7740_add_standard_devices_dt,
|
|
.timer = &shmobile_timer,
|
|
.dt_compat = r8a7740_boards_compat_dt,
|
|
MACHINE_END
|
|
|
|
#endif /* CONFIG_USE_OF */
|