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linux-sg2042/arch/arm/mach-shmobile/board-bonito.c

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/*
* bonito board 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/kernel.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/pinctrl/machine.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/regulator/fixed.h>
#include <linux/regulator/machine.h>
#include <linux/smsc911x.h>
#include <linux/videodev2.h>
#include <mach/common.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
#include <asm/hardware/cache-l2x0.h>
#include <mach/r8a7740.h>
#include <mach/irqs.h>
#include <video/sh_mobile_lcdc.h>
/*
* CS Address device note
*----------------------------------------------------------------
* 0 0x0000_0000 NOR Flash (64MB) SW12 : bit3 = OFF
* 2 0x0800_0000 ExtNOR (64MB) SW12 : bit3 = OFF
* 4 -
* 5A -
* 5B 0x1600_0000 SRAM (8MB)
* 6 0x1800_0000 FPGA (64K)
* 0x1801_0000 Ether (4KB)
* 0x1801_1000 USB (4KB)
*/
/*
* SW12
*
* bit1 bit2 bit3
*----------------------------------------------------------------------------
* ON NOR WriteProtect NAND WriteProtect CS0 ExtNOR / CS2 NOR
* OFF NOR Not WriteProtect NAND Not WriteProtect CS0 NOR / CS2 ExtNOR
*/
/*
* SCIFA5 (CN42)
*
* S38.3 = ON
* S39.6 = ON
* S43.1 = ON
*/
/*
* LCDC0 (CN3/CN4/CN7)
*
* S38.1 = OFF
* S38.2 = OFF
*/
/* Dummy supplies, where voltage doesn't matter */
static struct regulator_consumer_supply dummy_supplies[] = {
REGULATOR_SUPPLY("vddvario", "smsc911x"),
REGULATOR_SUPPLY("vdd33a", "smsc911x"),
};
/*
* FPGA
*/
#define IRQSR0 0x0020
#define IRQSR1 0x0022
#define IRQMR0 0x0030
#define IRQMR1 0x0032
#define BUSSWMR1 0x0070
#define BUSSWMR2 0x0072
#define BUSSWMR3 0x0074
#define BUSSWMR4 0x0076
#define LCDCR 0x10B4
#define DEVRSTCR1 0x10D0
#define DEVRSTCR2 0x10D2
#define A1MDSR 0x10E0
#define BVERR 0x1100
/* FPGA IRQ */
#define FPGA_IRQ_BASE (512)
#define FPGA_IRQ0 (FPGA_IRQ_BASE)
#define FPGA_IRQ1 (FPGA_IRQ_BASE + 16)
#define FPGA_ETH_IRQ (FPGA_IRQ0 + 15)
static u16 bonito_fpga_read(u32 offset)
{
return __raw_readw(IOMEM(0xf0003000) + offset);
}
static void bonito_fpga_write(u32 offset, u16 val)
{
__raw_writew(val, IOMEM(0xf0003000) + offset);
}
static void bonito_fpga_irq_disable(struct irq_data *data)
{
unsigned int irq = data->irq;
u32 addr = (irq < 1016) ? IRQMR0 : IRQMR1;
int shift = irq % 16;
bonito_fpga_write(addr, bonito_fpga_read(addr) | (1 << shift));
}
static void bonito_fpga_irq_enable(struct irq_data *data)
{
unsigned int irq = data->irq;
u32 addr = (irq < 1016) ? IRQMR0 : IRQMR1;
int shift = irq % 16;
bonito_fpga_write(addr, bonito_fpga_read(addr) & ~(1 << shift));
}
static struct irq_chip bonito_fpga_irq_chip __read_mostly = {
.name = "bonito FPGA",
.irq_mask = bonito_fpga_irq_disable,
.irq_unmask = bonito_fpga_irq_enable,
};
static void bonito_fpga_irq_demux(unsigned int irq, struct irq_desc *desc)
{
u32 val = bonito_fpga_read(IRQSR1) << 16 |
bonito_fpga_read(IRQSR0);
u32 mask = bonito_fpga_read(IRQMR1) << 16 |
bonito_fpga_read(IRQMR0);
int i;
val &= ~mask;
for (i = 0; i < 32; i++) {
if (!(val & (1 << i)))
continue;
generic_handle_irq(FPGA_IRQ_BASE + i);
}
}
static void bonito_fpga_init(void)
{
int i;
bonito_fpga_write(IRQMR0, 0xffff); /* mask all */
bonito_fpga_write(IRQMR1, 0xffff); /* mask all */
/* Device reset */
bonito_fpga_write(DEVRSTCR1,
(1 << 2)); /* Eth */
/* FPGA irq require special handling */
for (i = FPGA_IRQ_BASE; i < FPGA_IRQ_BASE + 32; i++) {
irq_set_chip_and_handler_name(i, &bonito_fpga_irq_chip,
handle_level_irq, "level");
set_irq_flags(i, IRQF_VALID); /* yuck */
}
irq_set_chained_handler(evt2irq(0x0340), bonito_fpga_irq_demux);
irq_set_irq_type(evt2irq(0x0340), IRQ_TYPE_LEVEL_LOW);
}
/*
* PMIC settings
*
* FIXME
*
* bonito board needs some settings by pmic which use i2c access.
* pmic settings use device_initcall() here for use it.
*/
static __u8 *pmic_settings = NULL;
static __u8 pmic_do_2A[] = {
0x1C, 0x09,
0x1A, 0x80,
0xff, 0xff,
};
static int __init pmic_init(void)
{
struct i2c_adapter *a = i2c_get_adapter(0);
struct i2c_msg msg;
__u8 buf[2];
int i, ret;
if (!pmic_settings)
return 0;
if (!a)
return 0;
msg.addr = 0x46;
msg.buf = buf;
msg.len = 2;
msg.flags = 0;
for (i = 0; ; i += 2) {
buf[0] = pmic_settings[i + 0];
buf[1] = pmic_settings[i + 1];
if ((0xff == buf[0]) && (0xff == buf[1]))
break;
ret = i2c_transfer(a, &msg, 1);
if (ret < 0) {
pr_err("i2c transfer fail\n");
break;
}
}
return 0;
}
device_initcall(pmic_init);
/*
* LCDC0
*/
static const struct fb_videomode lcdc0_mode = {
.name = "WVGA Panel",
.xres = 800,
.yres = 480,
.left_margin = 88,
.right_margin = 40,
.hsync_len = 128,
.upper_margin = 20,
.lower_margin = 5,
.vsync_len = 5,
.sync = 0,
};
static struct sh_mobile_lcdc_info lcdc0_info = {
.clock_source = LCDC_CLK_BUS,
.ch[0] = {
.chan = LCDC_CHAN_MAINLCD,
.fourcc = V4L2_PIX_FMT_RGB565,
.interface_type = RGB24,
.clock_divider = 5,
.flags = 0,
.lcd_modes = &lcdc0_mode,
.num_modes = 1,
.panel_cfg = {
.width = 152,
.height = 91,
},
},
};
static struct resource lcdc0_resources[] = {
[0] = {
.name = "LCDC0",
.start = 0xfe940000,
.end = 0xfe943fff,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = intcs_evt2irq(0x0580),
.flags = IORESOURCE_IRQ,
},
};
static struct platform_device lcdc0_device = {
.name = "sh_mobile_lcdc_fb",
.id = 0,
.resource = lcdc0_resources,
.num_resources = ARRAY_SIZE(lcdc0_resources),
.dev = {
.platform_data = &lcdc0_info,
.coherent_dma_mask = ~0,
},
};
static const struct pinctrl_map lcdc0_pinctrl_map[] = {
/* LCD0 */
PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "pfc-r8a7740",
"lcd0_data24_1", "lcd0"),
PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "pfc-r8a7740",
"lcd0_lclk_1", "lcd0"),
PIN_MAP_MUX_GROUP_DEFAULT("sh_mobile_lcdc_fb.0", "pfc-r8a7740",
"lcd0_sync", "lcd0"),
};
/*
* SMSC 9221
*/
static struct resource smsc_resources[] = {
[0] = {
.start = 0x18010000,
.end = 0x18011000 - 1,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = FPGA_ETH_IRQ,
.flags = IORESOURCE_IRQ,
},
};
static struct smsc911x_platform_config smsc_platdata = {
.flags = SMSC911X_USE_16BIT,
.phy_interface = PHY_INTERFACE_MODE_MII,
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
};
static struct platform_device smsc_device = {
.name = "smsc911x",
.dev = {
.platform_data = &smsc_platdata,
},
.resource = smsc_resources,
.num_resources = ARRAY_SIZE(smsc_resources),
};
/*
* core board devices
*/
static struct platform_device *bonito_core_devices[] __initdata = {
};
/*
* base board devices
*/
static struct platform_device *bonito_base_devices[] __initdata = {
&lcdc0_device,
&smsc_device,
};
/*
* map I/O
*/
static struct map_desc bonito_io_desc[] __initdata = {
/*
* for FPGA (0x1800000-0x19ffffff)
* 0x18000000-0x18002000 -> 0xf0003000-0xf0005000
*/
{
.virtual = 0xf0003000,
.pfn = __phys_to_pfn(0x18000000),
.length = PAGE_SIZE * 2,
.type = MT_DEVICE_NONSHARED
}
};
static void __init bonito_map_io(void)
{
r8a7740_map_io();
iotable_init(bonito_io_desc, ARRAY_SIZE(bonito_io_desc));
}
/*
* board init
*/
#define BIT_ON(sw, bit) (sw & (1 << bit))
#define BIT_OFF(sw, bit) (!(sw & (1 << bit)))
#define VCCQ1CR IOMEM(0xE6058140)
#define VCCQ1LCDCR IOMEM(0xE6058186)
static void __init bonito_init(void)
{
u16 val;
regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
r8a7740_pinmux_init();
bonito_fpga_init();
pmic_settings = pmic_do_2A;
/*
* core board settings
*/
#ifdef CONFIG_CACHE_L2X0
/* Early BRESP enable, Shared attribute override enable, 32K*8way */
l2x0_init(IOMEM(0xf0002000), 0x40440000, 0x82000fff);
#endif
r8a7740_add_standard_devices();
platform_add_devices(bonito_core_devices,
ARRAY_SIZE(bonito_core_devices));
/*
* base board settings
*/
gpio_request_one(176, GPIOF_IN, NULL);
if (!gpio_get_value(176)) {
u16 bsw2;
u16 bsw3;
u16 bsw4;
/*
* FPGA
*/
gpio_request(GPIO_FN_CS5B, NULL);
gpio_request(GPIO_FN_CS6A, NULL);
gpio_request(GPIO_FN_CS5A_PORT105, NULL);
gpio_request(GPIO_FN_IRQ10, NULL);
val = bonito_fpga_read(BVERR);
pr_info("bonito version: cpu %02x, base %02x\n",
((val >> 8) & 0xFF),
((val >> 0) & 0xFF));
bsw2 = bonito_fpga_read(BUSSWMR2);
bsw3 = bonito_fpga_read(BUSSWMR3);
bsw4 = bonito_fpga_read(BUSSWMR4);
/*
* SCIFA5 (CN42)
*/
if (BIT_OFF(bsw2, 1) && /* S38.3 = ON */
BIT_OFF(bsw3, 9) && /* S39.6 = ON */
BIT_OFF(bsw4, 4)) { /* S43.1 = ON */
gpio_request(GPIO_FN_SCIFA5_TXD_PORT91, NULL);
gpio_request(GPIO_FN_SCIFA5_RXD_PORT92, NULL);
}
/*
* LCDC0 (CN3)
*/
if (BIT_ON(bsw2, 3) && /* S38.1 = OFF */
BIT_ON(bsw2, 2)) { /* S38.2 = OFF */
pinctrl_register_mappings(lcdc0_pinctrl_map,
ARRAY_SIZE(lcdc0_pinctrl_map));
gpio_request(GPIO_FN_LCDC0_SELECT, NULL);
gpio_request_one(61, GPIOF_OUT_INIT_HIGH,
NULL); /* LCDDON */
/* backlight on */
bonito_fpga_write(LCDCR, 1);
/* drivability Max */
__raw_writew(0x00FF , VCCQ1LCDCR);
__raw_writew(0xFFFF , VCCQ1CR);
}
platform_add_devices(bonito_base_devices,
ARRAY_SIZE(bonito_base_devices));
}
}
static void __init bonito_earlytimer_init(void)
{
u16 val;
u8 md_ck = 0;
/* read MD_CK value */
val = bonito_fpga_read(A1MDSR);
if (val & (1 << 10))
md_ck |= MD_CK2;
if (val & (1 << 9))
md_ck |= MD_CK1;
if (val & (1 << 8))
md_ck |= MD_CK0;
r8a7740_clock_init(md_ck);
shmobile_earlytimer_init();
}
static void __init bonito_add_early_devices(void)
{
r8a7740_add_early_devices();
}
MACHINE_START(BONITO, "bonito")
.map_io = bonito_map_io,
.init_early = bonito_add_early_devices,
.init_irq = r8a7740_init_irq,
.handle_irq = shmobile_handle_irq_intc,
.init_machine = bonito_init,
.init_late = shmobile_init_late,
.init_time = bonito_earlytimer_init,
MACHINE_END
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