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linux-next/arch/arm/mach-imx/mach-armadillo5x0.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

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/*
* armadillo5x0.c
*
* Copyright 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com>
* updates in http://alberdroid.blogspot.com/
*
* Based on Atmark Techno, Inc. armadillo 500 BSP 2008
* Based on mx31ads.c and pcm037.c Great Work!
*
* 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.
*
* 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 Street, Fifth Floor, Boston,
* MA 02110-1301, USA.
*/
#include <linux/types.h>
#include <linux/init.h>
#include <linux/clk.h>
#include <linux/platform_device.h>
#include <linux/gpio.h>
#include <linux/smsc911x.h>
#include <linux/interrupt.h>
#include <linux/irq.h>
#include <linux/mtd/physmap.h>
#include <linux/io.h>
#include <linux/input.h>
#include <linux/i2c.h>
#include <linux/usb/otg.h>
#include <linux/usb/ulpi.h>
#include <linux/delay.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.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>
#include "common.h"
#include "devices-imx31.h"
#include "crmregs-imx3.h"
#include "ehci.h"
#include "hardware.h"
#include "iomux-mx3.h"
#include "ulpi.h"
static int armadillo5x0_pins[] = {
/* UART1 */
MX31_PIN_CTS1__CTS1,
MX31_PIN_RTS1__RTS1,
MX31_PIN_TXD1__TXD1,
MX31_PIN_RXD1__RXD1,
/* UART2 */
MX31_PIN_CTS2__CTS2,
MX31_PIN_RTS2__RTS2,
MX31_PIN_TXD2__TXD2,
MX31_PIN_RXD2__RXD2,
/* LAN9118_IRQ */
IOMUX_MODE(MX31_PIN_GPIO1_0, IOMUX_CONFIG_GPIO),
/* SDHC1 */
MX31_PIN_SD1_DATA3__SD1_DATA3,
MX31_PIN_SD1_DATA2__SD1_DATA2,
MX31_PIN_SD1_DATA1__SD1_DATA1,
MX31_PIN_SD1_DATA0__SD1_DATA0,
MX31_PIN_SD1_CLK__SD1_CLK,
MX31_PIN_SD1_CMD__SD1_CMD,
/* Framebuffer */
MX31_PIN_LD0__LD0,
MX31_PIN_LD1__LD1,
MX31_PIN_LD2__LD2,
MX31_PIN_LD3__LD3,
MX31_PIN_LD4__LD4,
MX31_PIN_LD5__LD5,
MX31_PIN_LD6__LD6,
MX31_PIN_LD7__LD7,
MX31_PIN_LD8__LD8,
MX31_PIN_LD9__LD9,
MX31_PIN_LD10__LD10,
MX31_PIN_LD11__LD11,
MX31_PIN_LD12__LD12,
MX31_PIN_LD13__LD13,
MX31_PIN_LD14__LD14,
MX31_PIN_LD15__LD15,
MX31_PIN_LD16__LD16,
MX31_PIN_LD17__LD17,
MX31_PIN_VSYNC3__VSYNC3,
MX31_PIN_HSYNC__HSYNC,
MX31_PIN_FPSHIFT__FPSHIFT,
MX31_PIN_DRDY0__DRDY0,
IOMUX_MODE(MX31_PIN_LCS1, IOMUX_CONFIG_GPIO), /*ADV7125_PSAVE*/
/* I2C2 */
MX31_PIN_CSPI2_MOSI__SCL,
MX31_PIN_CSPI2_MISO__SDA,
/* OTG */
MX31_PIN_USBOTG_DATA0__USBOTG_DATA0,
MX31_PIN_USBOTG_DATA1__USBOTG_DATA1,
MX31_PIN_USBOTG_DATA2__USBOTG_DATA2,
MX31_PIN_USBOTG_DATA3__USBOTG_DATA3,
MX31_PIN_USBOTG_DATA4__USBOTG_DATA4,
MX31_PIN_USBOTG_DATA5__USBOTG_DATA5,
MX31_PIN_USBOTG_DATA6__USBOTG_DATA6,
MX31_PIN_USBOTG_DATA7__USBOTG_DATA7,
MX31_PIN_USBOTG_CLK__USBOTG_CLK,
MX31_PIN_USBOTG_DIR__USBOTG_DIR,
MX31_PIN_USBOTG_NXT__USBOTG_NXT,
MX31_PIN_USBOTG_STP__USBOTG_STP,
/* USB host 2 */
IOMUX_MODE(MX31_PIN_USBH2_CLK, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DIR, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_NXT, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_STP, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA0, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_USBH2_DATA1, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_STXD3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SRXD3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SCK3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SFS3, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_STXD6, IOMUX_CONFIG_FUNC),
IOMUX_MODE(MX31_PIN_SRXD6, IOMUX_CONFIG_FUNC),
};
/* USB */
#define OTG_RESET IOMUX_TO_GPIO(MX31_PIN_STXD4)
#define USBH2_RESET IOMUX_TO_GPIO(MX31_PIN_SCK6)
#define USBH2_CS IOMUX_TO_GPIO(MX31_PIN_GPIO1_3)
#define USB_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \
PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU)
static int usbotg_init(struct platform_device *pdev)
{
int err;
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA0, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA2, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA4, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA5, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA6, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DATA7, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_CLK, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_DIR, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_NXT, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBOTG_STP, USB_PAD_CFG);
/* Chip already enabled by hardware */
/* OTG phy reset*/
err = gpio_request(OTG_RESET, "USB-OTG-RESET");
if (err) {
pr_err("Failed to request the usb otg reset gpio\n");
return err;
}
err = gpio_direction_output(OTG_RESET, 1/*HIGH*/);
if (err) {
pr_err("Failed to reset the usb otg phy\n");
goto otg_free_reset;
}
gpio_set_value(OTG_RESET, 0/*LOW*/);
mdelay(5);
gpio_set_value(OTG_RESET, 1/*HIGH*/);
mdelay(10);
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
MXC_EHCI_INTERFACE_DIFF_UNI);
otg_free_reset:
gpio_free(OTG_RESET);
return err;
}
static int usbh2_init(struct platform_device *pdev)
{
int err;
mxc_iomux_set_pad(MX31_PIN_USBH2_CLK, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_DIR, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_NXT, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_STP, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA0, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_USBH2_DATA1, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SRXD6, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_STXD6, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SFS3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SCK3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_SRXD3, USB_PAD_CFG);
mxc_iomux_set_pad(MX31_PIN_STXD3, USB_PAD_CFG);
mxc_iomux_set_gpr(MUX_PGP_UH2, true);
/* Enable the chip */
err = gpio_request(USBH2_CS, "USB-H2-CS");
if (err) {
pr_err("Failed to request the usb host 2 CS gpio\n");
return err;
}
err = gpio_direction_output(USBH2_CS, 0/*Enabled*/);
if (err) {
pr_err("Failed to drive the usb host 2 CS gpio\n");
goto h2_free_cs;
}
/* H2 phy reset*/
err = gpio_request(USBH2_RESET, "USB-H2-RESET");
if (err) {
pr_err("Failed to request the usb host 2 reset gpio\n");
goto h2_free_cs;
}
err = gpio_direction_output(USBH2_RESET, 1/*HIGH*/);
if (err) {
pr_err("Failed to reset the usb host 2 phy\n");
goto h2_free_reset;
}
gpio_set_value(USBH2_RESET, 0/*LOW*/);
mdelay(5);
gpio_set_value(USBH2_RESET, 1/*HIGH*/);
mdelay(10);
return mx31_initialize_usb_hw(pdev->id, MXC_EHCI_POWER_PINS_ENABLED |
MXC_EHCI_INTERFACE_DIFF_UNI);
h2_free_reset:
gpio_free(USBH2_RESET);
h2_free_cs:
gpio_free(USBH2_CS);
return err;
}
static struct mxc_usbh_platform_data usbotg_pdata __initdata = {
.init = usbotg_init,
.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};
static struct mxc_usbh_platform_data usbh2_pdata __initdata = {
.init = usbh2_init,
.portsc = MXC_EHCI_MODE_ULPI | MXC_EHCI_UTMI_8BIT,
};
/* RTC over I2C*/
#define ARMADILLO5X0_RTC_GPIO IOMUX_TO_GPIO(MX31_PIN_SRXD4)
static struct i2c_board_info armadillo5x0_i2c_rtc = {
I2C_BOARD_INFO("s35390a", 0x30),
};
/* GPIO BUTTONS */
static struct gpio_keys_button armadillo5x0_buttons[] = {
{
.code = KEY_ENTER, /*28*/
.gpio = IOMUX_TO_GPIO(MX31_PIN_SCLK0),
.active_low = 1,
.desc = "menu",
.wakeup = 1,
}, {
.code = KEY_BACK, /*158*/
.gpio = IOMUX_TO_GPIO(MX31_PIN_SRST0),
.active_low = 1,
.desc = "back",
.wakeup = 1,
}
};
static const struct gpio_keys_platform_data
armadillo5x0_button_data __initconst = {
.buttons = armadillo5x0_buttons,
.nbuttons = ARRAY_SIZE(armadillo5x0_buttons),
};
/*
* NAND Flash
*/
static const struct mxc_nand_platform_data
armadillo5x0_nand_board_info __initconst = {
.width = 1,
.hw_ecc = 1,
};
/*
* MTD NOR Flash
*/
static struct mtd_partition armadillo5x0_nor_flash_partitions[] = {
{
.name = "nor.bootloader",
.offset = 0x00000000,
.size = 4*32*1024,
}, {
.name = "nor.kernel",
.offset = MTDPART_OFS_APPEND,
.size = 16*128*1024,
}, {
.name = "nor.userland",
.offset = MTDPART_OFS_APPEND,
.size = 110*128*1024,
}, {
.name = "nor.config",
.offset = MTDPART_OFS_APPEND,
.size = 1*128*1024,
},
};
static const struct physmap_flash_data
armadillo5x0_nor_flash_pdata __initconst = {
.width = 2,
.parts = armadillo5x0_nor_flash_partitions,
.nr_parts = ARRAY_SIZE(armadillo5x0_nor_flash_partitions),
};
static const struct resource armadillo5x0_nor_flash_resource __initconst = {
.flags = IORESOURCE_MEM,
.start = MX31_CS0_BASE_ADDR,
.end = MX31_CS0_BASE_ADDR + SZ_64M - 1,
};
/*
* FB support
*/
static const struct fb_videomode fb_modedb[] = {
{ /* 640x480 @ 60 Hz */
.name = "CRT-VGA",
.refresh = 60,
.xres = 640,
.yres = 480,
.pixclock = 39721,
.left_margin = 35,
.right_margin = 115,
.upper_margin = 43,
.lower_margin = 1,
.hsync_len = 10,
.vsync_len = 1,
.sync = FB_SYNC_OE_ACT_HIGH,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
}, {/* 800x600 @ 56 Hz */
.name = "CRT-SVGA",
.refresh = 56,
.xres = 800,
.yres = 600,
.pixclock = 30000,
.left_margin = 30,
.right_margin = 108,
.upper_margin = 13,
.lower_margin = 10,
.hsync_len = 10,
.vsync_len = 1,
.sync = FB_SYNC_OE_ACT_HIGH | FB_SYNC_HOR_HIGH_ACT |
FB_SYNC_VERT_HIGH_ACT,
.vmode = FB_VMODE_NONINTERLACED,
.flag = 0,
},
};
static struct mx3fb_platform_data mx3fb_pdata __initdata = {
.name = "CRT-VGA",
.mode = fb_modedb,
.num_modes = ARRAY_SIZE(fb_modedb),
};
/*
* SDHC 1
* MMC support
*/
static int armadillo5x0_sdhc1_get_ro(struct device *dev)
{
return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B));
}
static int armadillo5x0_sdhc1_init(struct device *dev,
irq_handler_t detect_irq, void *data)
{
int ret;
int gpio_det, gpio_wp;
gpio_det = IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK);
gpio_wp = IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B);
ret = gpio_request(gpio_det, "sdhc-card-detect");
if (ret)
return ret;
gpio_direction_input(gpio_det);
ret = gpio_request(gpio_wp, "sdhc-write-protect");
if (ret)
goto err_gpio_free;
gpio_direction_input(gpio_wp);
/* When supported the trigger type have to be BOTH */
ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK)),
detect_irq, IRQF_TRIGGER_FALLING,
"sdhc-detect", data);
if (ret)
goto err_gpio_free_2;
return 0;
err_gpio_free_2:
gpio_free(gpio_wp);
err_gpio_free:
gpio_free(gpio_det);
return ret;
}
static void armadillo5x0_sdhc1_exit(struct device *dev, void *data)
{
free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK)), data);
gpio_free(IOMUX_TO_GPIO(MX31_PIN_ATA_DMACK));
gpio_free(IOMUX_TO_GPIO(MX31_PIN_ATA_RESET_B));
}
static const struct imxmmc_platform_data sdhc_pdata __initconst = {
.get_ro = armadillo5x0_sdhc1_get_ro,
.init = armadillo5x0_sdhc1_init,
.exit = armadillo5x0_sdhc1_exit,
};
/*
* SMSC 9118
* Network support
*/
static struct resource armadillo5x0_smc911x_resources[] = {
{
.start = MX31_CS3_BASE_ADDR,
.end = MX31_CS3_BASE_ADDR + SZ_32M - 1,
.flags = IORESOURCE_MEM,
}, {
/* irq number is run-time assigned */
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
},
};
static struct smsc911x_platform_config smsc911x_info = {
.flags = SMSC911X_USE_16BIT,
.irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
.irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
};
static struct platform_device armadillo5x0_smc911x_device = {
.name = "smsc911x",
.id = -1,
.num_resources = ARRAY_SIZE(armadillo5x0_smc911x_resources),
.resource = armadillo5x0_smc911x_resources,
.dev = {
.platform_data = &smsc911x_info,
},
};
/* UART device data */
static const struct imxuart_platform_data uart_pdata __initconst = {
.flags = IMXUART_HAVE_RTSCTS,
};
static struct platform_device *devices[] __initdata = {
&armadillo5x0_smc911x_device,
};
static struct regulator_consumer_supply dummy_supplies[] = {
REGULATOR_SUPPLY("vdd33a", "smsc911x"),
REGULATOR_SUPPLY("vddvario", "smsc911x"),
};
/*
* Perform board specific initializations
*/
static void __init armadillo5x0_init(void)
{
imx31_soc_init();
mxc_iomux_setup_multiple_pins(armadillo5x0_pins,
ARRAY_SIZE(armadillo5x0_pins), "armadillo5x0");
regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
armadillo5x0_smc911x_resources[1].start =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
armadillo5x0_smc911x_resources[1].end =
gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_GPIO1_0));
platform_add_devices(devices, ARRAY_SIZE(devices));
imx_add_gpio_keys(&armadillo5x0_button_data);
imx31_add_imx_i2c1(NULL);
/* Register UART */
imx31_add_imx_uart0(&uart_pdata);
imx31_add_imx_uart1(&uart_pdata);
/* SMSC9118 IRQ pin */
gpio_direction_input(MX31_PIN_GPIO1_0);
/* Register SDHC */
imx31_add_mxc_mmc(0, &sdhc_pdata);
/* Register FB */
imx31_add_ipu_core();
imx31_add_mx3_sdc_fb(&mx3fb_pdata);
/* Register NOR Flash */
platform_device_register_resndata(NULL, "physmap-flash", -1,
&armadillo5x0_nor_flash_resource, 1,
&armadillo5x0_nor_flash_pdata,
sizeof(armadillo5x0_nor_flash_pdata));
/* Register NAND Flash */
imx31_add_mxc_nand(&armadillo5x0_nand_board_info);
/* set NAND page size to 2k if not configured via boot mode pins */
imx_writel(imx_readl(mx3_ccm_base + MXC_CCM_RCSR) | (1 << 30),
mx3_ccm_base + MXC_CCM_RCSR);
/* RTC */
/* Get RTC IRQ and register the chip */
if (gpio_request(ARMADILLO5X0_RTC_GPIO, "rtc") == 0) {
if (gpio_direction_input(ARMADILLO5X0_RTC_GPIO) == 0)
armadillo5x0_i2c_rtc.irq = gpio_to_irq(ARMADILLO5X0_RTC_GPIO);
else
gpio_free(ARMADILLO5X0_RTC_GPIO);
}
if (armadillo5x0_i2c_rtc.irq == 0)
pr_warn("armadillo5x0_init: failed to get RTC IRQ\n");
i2c_register_board_info(1, &armadillo5x0_i2c_rtc, 1);
/* USB */
usbotg_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (usbotg_pdata.otg)
imx31_add_mxc_ehci_otg(&usbotg_pdata);
usbh2_pdata.otg = imx_otg_ulpi_create(ULPI_OTG_DRVVBUS |
ULPI_OTG_DRVVBUS_EXT);
if (usbh2_pdata.otg)
imx31_add_mxc_ehci_hs(2, &usbh2_pdata);
}
static void __init armadillo5x0_timer_init(void)
{
mx31_clocks_init(26000000);
}
MACHINE_START(ARMADILLO5X0, "Armadillo-500")
/* Maintainer: Alberto Panizzo */
.atag_offset = 0x100,
.map_io = mx31_map_io,
.init_early = imx31_init_early,
.init_irq = mx31_init_irq,
.init_time = armadillo5x0_timer_init,
.init_machine = armadillo5x0_init,
.restart = mxc_restart,
MACHINE_END
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