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alistair23-linux/arch/arm/mach-imx/mach-mx31ads.c
Johannes Berg c553138fbd ARM: imx: use endian-safe readl/readw/writel/writew 
Instead of __raw_*, define imx_* to *_relaxed and use those.

Using imx_* was requested by Arnd because *_relaxed tends to
indicate that the code was carefully reviewed to not require
any synchronisation and otherwise be safe, which isn't the
case here with the automatic conversion.

The conversion itself was done using the following spatch
(since that automatically adjusts the coding style unlike
a simple search&replace).

@@
expression E1, E2;
@@
-__raw_writel(E1, E2)
+imx_writel(E1, E2)
@@
expression E1, E2;
@@
-__raw_writew(E1, E2)
+imx_writew(E1, E2)
@@
expression E1;
@@
-__raw_readl(E1)
+imx_readl(E1)
@@
expression E1;
@@
-__raw_readw(E1)
+imx_readw(E1)

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-02-02 13:24:17 +08:00

589 lines
15 KiB
C
Raw Blame History

/*
* Copyright (C) 2000 Deep Blue Solutions Ltd
* Copyright (C) 2002 Shane Nay (shane@minirl.com)
* Copyright 2005-2007 Freescale Semiconductor, Inc. All Rights Reserved.
*
* 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; either version 2 of the License, or
* (at your option) any later version.
*
* 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/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/serial_8250.h>
#include <linux/gpio.h>
#include <linux/i2c.h>
#include <linux/irq.h>
#include <linux/irqdomain.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/time.h>
#include <asm/memory.h>
#include <asm/mach/map.h>
#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
#include <linux/mfd/wm8350/audio.h>
#include <linux/mfd/wm8350/core.h>
#include <linux/mfd/wm8350/pmic.h>
#endif
#include "common.h"
#include "devices-imx31.h"
#include "hardware.h"
#include "iomux-mx3.h"
/* Base address of PBC controller */
#define PBC_BASE_ADDRESS MX31_CS4_BASE_ADDR_VIRT
/* PBC Board interrupt status register */
#define PBC_INTSTATUS 0x000016
/* PBC Board interrupt current status register */
#define PBC_INTCURR_STATUS 0x000018
/* PBC Interrupt mask register set address */
#define PBC_INTMASK_SET 0x00001A
/* PBC Interrupt mask register clear address */
#define PBC_INTMASK_CLEAR 0x00001C
/* External UART A */
#define PBC_SC16C652_UARTA 0x010000
/* External UART B */
#define PBC_SC16C652_UARTB 0x010010
#define PBC_INTSTATUS_REG (PBC_INTSTATUS + PBC_BASE_ADDRESS)
#define PBC_INTMASK_SET_REG (PBC_INTMASK_SET + PBC_BASE_ADDRESS)
#define PBC_INTMASK_CLEAR_REG (PBC_INTMASK_CLEAR + PBC_BASE_ADDRESS)
#define EXPIO_INT_XUART_INTA 10
#define EXPIO_INT_XUART_INTB 11
#define MXC_MAX_EXP_IO_LINES 16
/* CS8900 */
#define EXPIO_INT_ENET_INT 8
#define CS4_CS8900_MMIO_START 0x20000
static struct irq_domain *domain;
/*
* The serial port definition structure.
*/
static struct plat_serial8250_port serial_platform_data[] = {
{
.membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTA),
.mapbase = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTA),
.uartclk = 14745600,
.regshift = 0,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
}, {
.membase = (void *)(PBC_BASE_ADDRESS + PBC_SC16C652_UARTB),
.mapbase = (unsigned long)(MX31_CS4_BASE_ADDR + PBC_SC16C652_UARTB),
.uartclk = 14745600,
.regshift = 0,
.iotype = UPIO_MEM,
.flags = UPF_BOOT_AUTOCONF | UPF_SKIP_TEST | UPF_AUTO_IRQ,
},
{},
};
static struct platform_device serial_device = {
.name = "serial8250",
.id = 0,
.dev = {
.platform_data = serial_platform_data,
},
};
static struct resource mx31ads_cs8900_resources[] __initdata = {
DEFINE_RES_MEM(MX31_CS4_BASE_ADDR + CS4_CS8900_MMIO_START, SZ_64K),
DEFINE_RES_IRQ(-1),
};
static const struct platform_device_info mx31ads_cs8900_devinfo __initconst = {
.name = "cs89x0",
.id = 0,
.res = mx31ads_cs8900_resources,
.num_res = ARRAY_SIZE(mx31ads_cs8900_resources),
};
static int __init mxc_init_extuart(void)
{
serial_platform_data[0].irq = irq_find_mapping(domain,
EXPIO_INT_XUART_INTA);
serial_platform_data[1].irq = irq_find_mapping(domain,
EXPIO_INT_XUART_INTB);
return platform_device_register(&serial_device);
}
static void __init mxc_init_ext_ethernet(void)
{
mx31ads_cs8900_resources[1].start =
irq_find_mapping(domain, EXPIO_INT_ENET_INT);
mx31ads_cs8900_resources[1].end =
irq_find_mapping(domain, EXPIO_INT_ENET_INT);
platform_device_register_full(
(struct platform_device_info *)&mx31ads_cs8900_devinfo);
}
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static unsigned int uart_pins[] = {
MX31_PIN_CTS1__CTS1,
MX31_PIN_RTS1__RTS1,
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1
};
static inline void mxc_init_imx_uart(void)
{
mxc_iomux_setup_multiple_pins(uart_pins, ARRAY_SIZE(uart_pins), "uart-0");
imx31_add_imx_uart0(&uart_pdata);
}
static void mx31ads_expio_irq_handler(struct irq_desc *desc)
{
u32 imr_val;
u32 int_valid;
u32 expio_irq;
imr_val = imx_readw(PBC_INTMASK_SET_REG);
int_valid = imx_readw(PBC_INTSTATUS_REG) & imr_val;
expio_irq = 0;
for (; int_valid != 0; int_valid >>= 1, expio_irq++) {
if ((int_valid & 1) == 0)
continue;
generic_handle_irq(irq_find_mapping(domain, expio_irq));
}
}
/*
* Disable an expio pin's interrupt by setting the bit in the imr.
* @param d an expio virtual irq description
*/
static void expio_mask_irq(struct irq_data *d)
{
u32 expio = d->hwirq;
/* mask the interrupt */
imx_writew(1 << expio, PBC_INTMASK_CLEAR_REG);
imx_readw(PBC_INTMASK_CLEAR_REG);
}
/*
* Acknowledge an expanded io pin's interrupt by clearing the bit in the isr.
* @param d an expio virtual irq description
*/
static void expio_ack_irq(struct irq_data *d)
{
u32 expio = d->hwirq;
/* clear the interrupt status */
imx_writew(1 << expio, PBC_INTSTATUS_REG);
}
/*
* Enable a expio pin's interrupt by clearing the bit in the imr.
* @param d an expio virtual irq description
*/
static void expio_unmask_irq(struct irq_data *d)
{
u32 expio = d->hwirq;
/* unmask the interrupt */
imx_writew(1 << expio, PBC_INTMASK_SET_REG);
}
static struct irq_chip expio_irq_chip = {
.name = "EXPIO(CPLD)",
.irq_ack = expio_ack_irq,
.irq_mask = expio_mask_irq,
.irq_unmask = expio_unmask_irq,
};
static void __init mx31ads_init_expio(void)
{
int irq_base;
int i, irq;
printk(KERN_INFO "MX31ADS EXPIO(CPLD) hardware\n");
/*
* Configure INT line as GPIO input
*/
mxc_iomux_alloc_pin(IOMUX_MODE(MX31_PIN_GPIO1_4, IOMUX_CONFIG_GPIO), "expio");
/* disable the interrupt and clear the status */
imx_writew(0xFFFF, PBC_INTMASK_CLEAR_REG);
imx_writew(0xFFFF, PBC_INTSTATUS_REG);
irq_base = irq_alloc_descs(-1, 0, MXC_MAX_EXP_IO_LINES, numa_node_id());
WARN_ON(irq_base < 0);
domain = irq_domain_add_legacy(NULL, MXC_MAX_EXP_IO_LINES, irq_base, 0,
&irq_domain_simple_ops, NULL);
WARN_ON(!domain);
for (i = irq_base; i < irq_base + MXC_MAX_EXP_IO_LINES; i++) {
irq_set_chip_and_handler(i, &expio_irq_chip, handle_level_irq);
irq_clear_status_flags(i, IRQ_NOREQUEST);
}
irq = gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_4));
irq_set_irq_type(irq, IRQ_TYPE_LEVEL_HIGH);
irq_set_chained_handler(irq, mx31ads_expio_irq_handler);
}
#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
/* This section defines setup for the Wolfson Microelectronics
* 1133-EV1 PMU/audio board. When other PMU boards are supported the
* regulator definitions may be shared with them, but for now they can
* only be used with this board so would generate warnings about
* unused statics and some of the configuration is specific to this
* module.
*/
/* CPU */
static struct regulator_consumer_supply sw1a_consumers[] = {
{
.supply = "cpu_vcc",
}
};
static struct regulator_init_data sw1a_data = {
.constraints = {
.name = "SW1A",
.min_uV = 1275000,
.max_uV = 1600000,
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE |
REGULATOR_CHANGE_MODE,
.valid_modes_mask = REGULATOR_MODE_NORMAL |
REGULATOR_MODE_FAST,
.state_mem = {
.uV = 1400000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
.initial_state = PM_SUSPEND_MEM,
.always_on = 1,
.boot_on = 1,
},
.num_consumer_supplies = ARRAY_SIZE(sw1a_consumers),
.consumer_supplies = sw1a_consumers,
};
/* System IO - High */
static struct regulator_init_data viohi_data = {
.constraints = {
.name = "VIOHO",
.min_uV = 2800000,
.max_uV = 2800000,
.state_mem = {
.uV = 2800000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
.initial_state = PM_SUSPEND_MEM,
.always_on = 1,
.boot_on = 1,
},
};
/* System IO - Low */
static struct regulator_init_data violo_data = {
.constraints = {
.name = "VIOLO",
.min_uV = 1800000,
.max_uV = 1800000,
.state_mem = {
.uV = 1800000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
.initial_state = PM_SUSPEND_MEM,
.always_on = 1,
.boot_on = 1,
},
};
/* DDR RAM */
static struct regulator_init_data sw2a_data = {
.constraints = {
.name = "SW2A",
.min_uV = 1800000,
.max_uV = 1800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.state_mem = {
.uV = 1800000,
.mode = REGULATOR_MODE_NORMAL,
.enabled = 1,
},
.state_disk = {
.mode = REGULATOR_MODE_NORMAL,
.enabled = 0,
},
.always_on = 1,
.boot_on = 1,
.initial_state = PM_SUSPEND_MEM,
},
};
static struct regulator_init_data ldo1_data = {
.constraints = {
.name = "VCAM/VMMC1/VMMC2",
.min_uV = 2800000,
.max_uV = 2800000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.apply_uV = 1,
},
};
static struct regulator_consumer_supply ldo2_consumers[] = {
{ .supply = "AVDD", .dev_name = "1-001a" },
{ .supply = "HPVDD", .dev_name = "1-001a" },
};
/* CODEC and SIM */
static struct regulator_init_data ldo2_data = {
.constraints = {
.name = "VESIM/VSIM/AVDD",
.min_uV = 3300000,
.max_uV = 3300000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.valid_ops_mask = REGULATOR_CHANGE_STATUS,
.apply_uV = 1,
},
.num_consumer_supplies = ARRAY_SIZE(ldo2_consumers),
.consumer_supplies = ldo2_consumers,
};
/* General */
static struct regulator_init_data vdig_data = {
.constraints = {
.name = "VDIG",
.min_uV = 1500000,
.max_uV = 1500000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.apply_uV = 1,
.always_on = 1,
.boot_on = 1,
},
};
/* Tranceivers */
static struct regulator_init_data ldo4_data = {
.constraints = {
.name = "VRF1/CVDD_2.775",
.min_uV = 2500000,
.max_uV = 2500000,
.valid_modes_mask = REGULATOR_MODE_NORMAL,
.apply_uV = 1,
.always_on = 1,
.boot_on = 1,
},
};
static struct wm8350_led_platform_data wm8350_led_data = {
.name = "wm8350:white",
.default_trigger = "heartbeat",
.max_uA = 27899,
};
static struct wm8350_audio_platform_data imx32ads_wm8350_setup = {
.vmid_discharge_msecs = 1000,
.drain_msecs = 30,
.cap_discharge_msecs = 700,
.vmid_charge_msecs = 700,
.vmid_s_curve = WM8350_S_CURVE_SLOW,
.dis_out4 = WM8350_DISCHARGE_SLOW,
.dis_out3 = WM8350_DISCHARGE_SLOW,
.dis_out2 = WM8350_DISCHARGE_SLOW,
.dis_out1 = WM8350_DISCHARGE_SLOW,
.vroi_out4 = WM8350_TIE_OFF_500R,
.vroi_out3 = WM8350_TIE_OFF_500R,
.vroi_out2 = WM8350_TIE_OFF_500R,
.vroi_out1 = WM8350_TIE_OFF_500R,
.vroi_enable = 0,
.codec_current_on = WM8350_CODEC_ISEL_1_0,
.codec_current_standby = WM8350_CODEC_ISEL_0_5,
.codec_current_charge = WM8350_CODEC_ISEL_1_5,
};
static int mx31_wm8350_init(struct wm8350 *wm8350)
{
wm8350_gpio_config(wm8350, 0, WM8350_GPIO_DIR_IN,
WM8350_GPIO0_PWR_ON_IN, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_UP, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_ON);
wm8350_gpio_config(wm8350, 3, WM8350_GPIO_DIR_IN,
WM8350_GPIO3_PWR_OFF_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_ON);
wm8350_gpio_config(wm8350, 4, WM8350_GPIO_DIR_IN,
WM8350_GPIO4_MR_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
wm8350_gpio_config(wm8350, 7, WM8350_GPIO_DIR_IN,
WM8350_GPIO7_HIBERNATE_IN, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_DOWN, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
wm8350_gpio_config(wm8350, 6, WM8350_GPIO_DIR_OUT,
WM8350_GPIO6_SDOUT_OUT, WM8350_GPIO_ACTIVE_HIGH,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
wm8350_gpio_config(wm8350, 8, WM8350_GPIO_DIR_OUT,
WM8350_GPIO8_VCC_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
wm8350_gpio_config(wm8350, 9, WM8350_GPIO_DIR_OUT,
WM8350_GPIO9_BATT_FAULT_OUT, WM8350_GPIO_ACTIVE_LOW,
WM8350_GPIO_PULL_NONE, WM8350_GPIO_INVERT_OFF,
WM8350_GPIO_DEBOUNCE_OFF);
wm8350_register_regulator(wm8350, WM8350_DCDC_1, &sw1a_data);
wm8350_register_regulator(wm8350, WM8350_DCDC_3, &viohi_data);
wm8350_register_regulator(wm8350, WM8350_DCDC_4, &violo_data);
wm8350_register_regulator(wm8350, WM8350_DCDC_6, &sw2a_data);
wm8350_register_regulator(wm8350, WM8350_LDO_1, &ldo1_data);
wm8350_register_regulator(wm8350, WM8350_LDO_2, &ldo2_data);
wm8350_register_regulator(wm8350, WM8350_LDO_3, &vdig_data);
wm8350_register_regulator(wm8350, WM8350_LDO_4, &ldo4_data);
/* LEDs */
wm8350_dcdc_set_slot(wm8350, WM8350_DCDC_5, 1, 1,
WM8350_DC5_ERRACT_SHUTDOWN_CONV);
wm8350_isink_set_flash(wm8350, WM8350_ISINK_A,
WM8350_ISINK_FLASH_DISABLE,
WM8350_ISINK_FLASH_TRIG_BIT,
WM8350_ISINK_FLASH_DUR_32MS,
WM8350_ISINK_FLASH_ON_INSTANT,
WM8350_ISINK_FLASH_OFF_INSTANT,
WM8350_ISINK_FLASH_MODE_EN);
wm8350_dcdc25_set_mode(wm8350, WM8350_DCDC_5,
WM8350_ISINK_MODE_BOOST,
WM8350_ISINK_ILIM_NORMAL,
WM8350_DC5_RMP_20V,
WM8350_DC5_FBSRC_ISINKA);
wm8350_register_led(wm8350, 0, WM8350_DCDC_5, WM8350_ISINK_A,
&wm8350_led_data);
wm8350->codec.platform_data = &imx32ads_wm8350_setup;
regulator_has_full_constraints();
return 0;
}
static struct wm8350_platform_data __initdata mx31_wm8350_pdata = {
.init = mx31_wm8350_init,
};
#endif
static struct i2c_board_info __initdata mx31ads_i2c1_devices[] = {
#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
{
I2C_BOARD_INFO("wm8350", 0x1a),
.platform_data = &mx31_wm8350_pdata,
/* irq number is run-time assigned */
},
#endif
};
static void __init mxc_init_i2c(void)
{
#ifdef CONFIG_MACH_MX31ADS_WM1133_EV1
mx31ads_i2c1_devices[0].irq =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_3));
#endif
i2c_register_board_info(1, mx31ads_i2c1_devices,
ARRAY_SIZE(mx31ads_i2c1_devices));
mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MOSI, IOMUX_CONFIG_ALT1));
mxc_iomux_mode(IOMUX_MODE(MX31_PIN_CSPI2_MISO, IOMUX_CONFIG_ALT1));
imx31_add_imx_i2c1(NULL);
}
static unsigned int ssi_pins[] = {
MX31_PIN_SFS5__SFS5,
MX31_PIN_SCK5__SCK5,
MX31_PIN_SRXD5__SRXD5,
MX31_PIN_STXD5__STXD5,
};
static void __init mxc_init_audio(void)
{
imx31_add_imx_ssi(0, NULL);
mxc_iomux_setup_multiple_pins(ssi_pins, ARRAY_SIZE(ssi_pins), "ssi");
}
/*
* Static mappings, starting from the CS4 start address up to the start address
* of the CS8900.
*/
static struct map_desc mx31ads_io_desc[] __initdata = {
{
.virtual = (unsigned long)MX31_CS4_BASE_ADDR_VIRT,
.pfn = __phys_to_pfn(MX31_CS4_BASE_ADDR),
.length = CS4_CS8900_MMIO_START,
.type = MT_DEVICE
},
};
static void __init mx31ads_map_io(void)
{
mx31_map_io();
iotable_init(mx31ads_io_desc, ARRAY_SIZE(mx31ads_io_desc));
}
static void __init mx31ads_init_irq(void)
{
mx31_init_irq();
mx31ads_init_expio();
}
static void __init mx31ads_init(void)
{
imx31_soc_init();
mxc_init_extuart();
mxc_init_imx_uart();
mxc_init_i2c();
mxc_init_audio();
mxc_init_ext_ethernet();
}
static void __init mx31ads_timer_init(void)
{
mx31_clocks_init(26000000);
}
MACHINE_START(MX31ADS, "Freescale MX31ADS")
/* Maintainer: Freescale Semiconductor, Inc. */
.atag_offset = 0x100,
.map_io = mx31ads_map_io,
.init_early = imx31_init_early,
.init_irq = mx31ads_init_irq,
.init_time = mx31ads_timer_init,
.init_machine = mx31ads_init,
.restart = mxc_restart,
MACHINE_END
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