linux_dsm_epyc7002/arch/arm/mach-pxa/pcm990-baseboard.c
Linus Torvalds 6b5a12dbca ARM: SoC multiplatform code changes for v4.5
This branch is the culmination of 5 years of effort to bring the ARMv6
 and ARMv7 platforms together such that they can all be enabled and
 boot the same kernel. It has been a tremendous amount of cleanup and
 refactoring by a huge number of people, and creation of several new
 (and major) subsystems to better abstract out all the platform details
 in an appropriate manner.
 
 The bulk of this branch is a large patchset from Arnd that brings several
 of the more minor and older platforms we have closer to multiplatform
 support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0 and realview
 Much of this is moving around header files from old mach directories,
 but there are also some cleanup patches of debug_ll (lowlevel debug
 per-platform options) and other parts.
 
 Linus Walleij also has some patchs to clean up the older ARM Realview
 platforms by finally introducing DT support, and Rob Herring has some
 for ARM Versatile which is now DT-only. Both of these platforms are
 now multiplatform.
 
 Finally, a couple of patches from Russell for Dove PMU, and a fix from
 Valentin Rothberg for Exynos ADC, which were rebased on top of the
 series to avoid conflicts.
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Merge tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc

Pull ARM SoC multiplatform code updates from Arnd Bergmann:
 "This branch is the culmination of 5 years of effort to bring the ARMv6
  and ARMv7 platforms together such that they can all be enabled and
  boot the same kernel.  It has been a tremendous amount of cleanup and
  refactoring by a huge number of people, and creation of several new
  (and major) subsystems to better abstract out all the platform details
  in an appropriate manner.

  The bulk of this branch is a large patchset from Arnd that brings
  several of the more minor and older platforms we have closer to
  multiplatform support.  Among these are MMP, S3C64xx, Orion5x, mv78xx0
  and realview Much of this is moving around header files from old mach
  directories, but there are also some cleanup patches of debug_ll
  (lowlevel debug per-platform options) and other parts.

  Linus Walleij also has some patchs to clean up the older ARM Realview
  platforms by finally introducing DT support, and Rob Herring has some
  for ARM Versatile which is now DT-only.  Both of these platforms are
  now multiplatform.

  Finally, a couple of patches from Russell for Dove PMU, and a fix from
  Valentin Rothberg for Exynos ADC, which were rebased on top of the
  series to avoid conflicts"

* tag 'armsoc-multiplatform' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (75 commits)
  ARM: realview: don't select SMP_ON_UP for UP builds
  ARM: s3c: simplify s3c_irqwake_{e,}intallow definition
  ARM: s3c64xx: fix pm-debug compilation
  iio: exynos-adc: fix irqf_oneshot.cocci warnings
  ARM: realview: build realview-dt SMP support only when used
  ARM: realview: select apropriate targets
  ARM: realview: clean up header files
  ARM: realview: make all header files local
  ARM: no longer make CPU targets visible separately
  ARM: integrator: use explicit core module options
  ARM: realview: enable multiplatform
  ARM: make default platform work for NOMMU
  ARM: debug-ll: move DEBUG_LL_UART_EFM32 to correct Kconfig location
  ARM: defconfig: use correct debug_ll settings
  ARM: versatile: convert to multi-platform
  ARM: versatile: merge mach code into a single file
  ARM: versatile: switch to DT only booting and remove legacy code
  ARM: versatile: add DT based PCI detection
  ARM: pxa: mark ezx structures as __maybe_unused
  ARM: pxa: mark raumfeld init functions as __maybe_unused
  ...
2016-01-20 18:03:56 -08:00

573 lines
14 KiB
C

/*
* arch/arm/mach-pxa/pcm990-baseboard.c
* Support for the Phytec phyCORE-PXA270 Development Platform (PCM-990).
*
* Refer
* http://www.phytec.com/products/rdk/ARM-XScale/phyCORE-XScale-PXA270.html
* for additional hardware info
*
* Author: Juergen Kilb
* Created: April 05, 2005
* Copyright: Phytec Messtechnik GmbH
* e-Mail: armlinux@phytec.de
*
* based on Intel Mainstone Board
*
* Copyright 2007 Juergen Beisert @ Pengutronix (j.beisert@pengutronix.de)
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
#include <linux/gpio.h>
#include <linux/irq.h>
#include <linux/platform_device.h>
#include <linux/i2c.h>
#include <linux/i2c/pxa-i2c.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <media/i2c/mt9v022.h>
#include <media/soc_camera.h>
#include <linux/platform_data/media/camera-pxa.h>
#include <asm/mach/map.h>
#include "pxa27x.h"
#include <mach/audio.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include "pcm990_baseboard.h"
#include <linux/platform_data/video-pxafb.h>
#include "devices.h"
#include "generic.h"
static unsigned long pcm990_pin_config[] __initdata = {
/* MMC */
GPIO32_MMC_CLK,
GPIO112_MMC_CMD,
GPIO92_MMC_DAT_0,
GPIO109_MMC_DAT_1,
GPIO110_MMC_DAT_2,
GPIO111_MMC_DAT_3,
/* USB */
GPIO88_USBH1_PWR,
GPIO89_USBH1_PEN,
/* PWM0 */
GPIO16_PWM0_OUT,
/* I2C */
GPIO117_I2C_SCL,
GPIO118_I2C_SDA,
/* AC97 */
GPIO28_AC97_BITCLK,
GPIO29_AC97_SDATA_IN_0,
GPIO30_AC97_SDATA_OUT,
GPIO31_AC97_SYNC,
};
static void __iomem *pcm990_cpld_base;
static u8 pcm990_cpld_readb(unsigned int reg)
{
return readb(pcm990_cpld_base + reg);
}
static void pcm990_cpld_writeb(u8 value, unsigned int reg)
{
writeb(value, pcm990_cpld_base + reg);
}
/*
* pcm990_lcd_power - control power supply to the LCD
* @on: 0 = switch off, 1 = switch on
*
* Called by the pxafb driver
*/
#ifndef CONFIG_PCM990_DISPLAY_NONE
static void pcm990_lcd_power(int on, struct fb_var_screeninfo *var)
{
if (on) {
/* enable LCD-Latches
* power on LCD
*/
pcm990_cpld_writeb(PCM990_CTRL_LCDPWR + PCM990_CTRL_LCDON,
PCM990_CTRL_REG3);
} else {
/* disable LCD-Latches
* power off LCD
*/
pcm990_cpld_writeb(0, PCM990_CTRL_REG3);
}
}
#endif
#if defined(CONFIG_PCM990_DISPLAY_SHARP)
static struct pxafb_mode_info fb_info_sharp_lq084v1dg21 = {
.pixclock = 28000,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 20,
.left_margin = 103,
.right_margin = 47,
.vsync_len = 6,
.upper_margin = 28,
.lower_margin = 5,
.sync = 0,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info pcm990_fbinfo __initdata = {
.modes = &fb_info_sharp_lq084v1dg21,
.num_modes = 1,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
.pxafb_lcd_power = pcm990_lcd_power,
};
#elif defined(CONFIG_PCM990_DISPLAY_NEC)
struct pxafb_mode_info fb_info_nec_nl6448bc20_18d = {
.pixclock = 39720,
.xres = 640,
.yres = 480,
.bpp = 16,
.hsync_len = 32,
.left_margin = 16,
.right_margin = 48,
.vsync_len = 2,
.upper_margin = 12,
.lower_margin = 17,
.sync = 0,
.cmap_greyscale = 0,
};
static struct pxafb_mach_info pcm990_fbinfo __initdata = {
.modes = &fb_info_nec_nl6448bc20_18d,
.num_modes = 1,
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
.pxafb_lcd_power = pcm990_lcd_power,
};
#endif
static struct pwm_lookup pcm990_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 0, "pwm-backlight.0", NULL, 78770,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data pcm990_backlight_data = {
.max_brightness = 1023,
.dft_brightness = 1023,
.enable_gpio = -1,
};
static struct platform_device pcm990_backlight_device = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa27x_device_pwm0.dev,
.platform_data = &pcm990_backlight_data,
},
};
/*
* The PCM-990 development baseboard uses PCM-027's hardware in the
* following way:
*
* - LCD support is in use
* - GPIO16 is output for back light on/off with PWM
* - GPIO58 ... GPIO73 are outputs for display data
* - GPIO74 is output output for LCDFCLK
* - GPIO75 is output for LCDLCLK
* - GPIO76 is output for LCDPCLK
* - GPIO77 is output for LCDBIAS
* - MMC support is in use
* - GPIO32 is output for MMCCLK
* - GPIO92 is MMDAT0
* - GPIO109 is MMDAT1
* - GPIO110 is MMCS0
* - GPIO111 is MMCS1
* - GPIO112 is MMCMD
* - IDE/CF card is in use
* - GPIO48 is output /POE
* - GPIO49 is output /PWE
* - GPIO50 is output /PIOR
* - GPIO51 is output /PIOW
* - GPIO54 is output /PCE2
* - GPIO55 is output /PREG
* - GPIO56 is input /PWAIT
* - GPIO57 is output /PIOS16
* - GPIO79 is output PSKTSEL
* - GPIO85 is output /PCE1
* - FFUART is in use
* - GPIO34 is input FFRXD
* - GPIO35 is input FFCTS
* - GPIO36 is input FFDCD
* - GPIO37 is input FFDSR
* - GPIO38 is input FFRI
* - GPIO39 is output FFTXD
* - GPIO40 is output FFDTR
* - GPIO41 is output FFRTS
* - BTUART is in use
* - GPIO42 is input BTRXD
* - GPIO43 is output BTTXD
* - GPIO44 is input BTCTS
* - GPIO45 is output BTRTS
* - IRUART is in use
* - GPIO46 is input STDRXD
* - GPIO47 is output STDTXD
* - AC97 is in use*)
* - GPIO28 is input AC97CLK
* - GPIO29 is input AC97DatIn
* - GPIO30 is output AC97DatO
* - GPIO31 is output AC97SYNC
* - GPIO113 is output AC97_RESET
* - SSP is in use
* - GPIO23 is output SSPSCLK
* - GPIO24 is output chip select to Max7301
* - GPIO25 is output SSPTXD
* - GPIO26 is input SSPRXD
* - GPIO27 is input for Max7301 IRQ
* - GPIO53 is input SSPSYSCLK
* - SSP3 is in use
* - GPIO81 is output SSPTXD3
* - GPIO82 is input SSPRXD3
* - GPIO83 is output SSPSFRM
* - GPIO84 is output SSPCLK3
*
* Otherwise claimed GPIOs:
* GPIO1 -> IRQ from user switch
* GPIO9 -> IRQ from power management
* GPIO10 -> IRQ from WML9712 AC97 controller
* GPIO11 -> IRQ from IDE controller
* GPIO12 -> IRQ from CF controller
* GPIO13 -> IRQ from CF controller
* GPIO14 -> GPIO free
* GPIO15 -> /CS1 selects baseboard's Control CPLD (U7, 16 bit wide data path)
* GPIO19 -> GPIO free
* GPIO20 -> /SDCS2
* GPIO21 -> /CS3 PC card socket select
* GPIO33 -> /CS5 network controller select
* GPIO78 -> /CS2 (16 bit wide data path)
* GPIO80 -> /CS4 (16 bit wide data path)
* GPIO86 -> GPIO free
* GPIO87 -> GPIO free
* GPIO90 -> LED0 on CPU module
* GPIO91 -> LED1 on CPI module
* GPIO117 -> SCL
* GPIO118 -> SDA
*/
static unsigned long pcm990_irq_enabled;
static void pcm990_mask_ack_irq(struct irq_data *d)
{
int pcm990_irq = (d->irq - PCM027_IRQ(0));
pcm990_irq_enabled &= ~(1 << pcm990_irq);
pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
}
static void pcm990_unmask_irq(struct irq_data *d)
{
int pcm990_irq = (d->irq - PCM027_IRQ(0));
u8 val;
/* the irq can be acknowledged only if deasserted, so it's done here */
pcm990_irq_enabled |= (1 << pcm990_irq);
val = pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
val |= 1 << pcm990_irq;
pcm990_cpld_writeb(val, PCM990_CTRL_INTSETCLR);
pcm990_cpld_writeb(pcm990_irq_enabled, PCM990_CTRL_INTMSKENA);
}
static struct irq_chip pcm990_irq_chip = {
.irq_mask_ack = pcm990_mask_ack_irq,
.irq_unmask = pcm990_unmask_irq,
};
static void pcm990_irq_handler(struct irq_desc *desc)
{
unsigned int irq;
unsigned long pending;
pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
pending &= pcm990_irq_enabled;
do {
/* clear our parent IRQ */
desc->irq_data.chip->irq_ack(&desc->irq_data);
if (likely(pending)) {
irq = PCM027_IRQ(0) + __ffs(pending);
generic_handle_irq(irq);
}
pending = ~pcm990_cpld_readb(PCM990_CTRL_INTSETCLR);
pending &= pcm990_irq_enabled;
} while (pending);
}
static void __init pcm990_init_irq(void)
{
int irq;
/* setup extra PCM990 irqs */
for (irq = PCM027_IRQ(0); irq <= PCM027_IRQ(3); irq++) {
irq_set_chip_and_handler(irq, &pcm990_irq_chip,
handle_level_irq);
irq_clear_status_flags(irq, IRQ_NOREQUEST | IRQ_NOPROBE);
}
/* disable all Interrupts */
pcm990_cpld_writeb(0x0, PCM990_CTRL_INTMSKENA);
pcm990_cpld_writeb(0xff, PCM990_CTRL_INTSETCLR);
irq_set_chained_handler(PCM990_CTRL_INT_IRQ, pcm990_irq_handler);
irq_set_irq_type(PCM990_CTRL_INT_IRQ, PCM990_CTRL_INT_IRQ_EDGE);
}
static int pcm990_mci_init(struct device *dev, irq_handler_t mci_detect_int,
void *data)
{
int err;
err = request_irq(PCM027_MMCDET_IRQ, mci_detect_int, 0,
"MMC card detect", data);
if (err)
printk(KERN_ERR "pcm990_mci_init: MMC/SD: can't request MMC "
"card detect IRQ\n");
return err;
}
static int pcm990_mci_setpower(struct device *dev, unsigned int vdd)
{
struct pxamci_platform_data *p_d = dev->platform_data;
u8 val;
val = pcm990_cpld_readb(PCM990_CTRL_REG5);
if ((1 << vdd) & p_d->ocr_mask)
val |= PCM990_CTRL_MMC2PWR;
else
val &= ~PCM990_CTRL_MMC2PWR;
pcm990_cpld_writeb(PCM990_CTRL_MMC2PWR, PCM990_CTRL_REG5);
return 0;
}
static void pcm990_mci_exit(struct device *dev, void *data)
{
free_irq(PCM027_MMCDET_IRQ, data);
}
#define MSECS_PER_JIFFY (1000/HZ)
static struct pxamci_platform_data pcm990_mci_platform_data = {
.detect_delay_ms = 250,
.ocr_mask = MMC_VDD_32_33 | MMC_VDD_33_34,
.init = pcm990_mci_init,
.setpower = pcm990_mci_setpower,
.exit = pcm990_mci_exit,
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
};
static struct pxaohci_platform_data pcm990_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT1 | POWER_CONTROL_LOW | POWER_SENSE_LOW,
.power_on_delay = 10,
};
/*
* PXA27x Camera specific stuff
*/
#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
static unsigned long pcm990_camera_pin_config[] = {
/* CIF */
GPIO98_CIF_DD_0,
GPIO105_CIF_DD_1,
GPIO104_CIF_DD_2,
GPIO103_CIF_DD_3,
GPIO95_CIF_DD_4,
GPIO94_CIF_DD_5,
GPIO93_CIF_DD_6,
GPIO108_CIF_DD_7,
GPIO107_CIF_DD_8,
GPIO106_CIF_DD_9,
GPIO42_CIF_MCLK,
GPIO45_CIF_PCLK,
GPIO43_CIF_FV,
GPIO44_CIF_LV,
};
/*
* CICR4: PCLK_EN: Pixel clock is supplied by the sensor
* MCLK_EN: Master clock is generated by PXA
* PCP: Data sampled on the falling edge of pixel clock
*/
struct pxacamera_platform_data pcm990_pxacamera_platform_data = {
.flags = PXA_CAMERA_MASTER | PXA_CAMERA_DATAWIDTH_8 | PXA_CAMERA_DATAWIDTH_10 |
PXA_CAMERA_PCLK_EN | PXA_CAMERA_MCLK_EN/* | PXA_CAMERA_PCP*/,
.mclk_10khz = 1000,
};
#include <linux/platform_data/pca953x.h>
static struct pca953x_platform_data pca9536_data = {
.gpio_base = PXA_NR_BUILTIN_GPIO,
};
static int gpio_bus_switch = -EINVAL;
static int pcm990_camera_set_bus_param(struct soc_camera_link *link,
unsigned long flags)
{
if (gpio_bus_switch < 0) {
if (flags == SOCAM_DATAWIDTH_10)
return 0;
else
return -EINVAL;
}
if (flags & SOCAM_DATAWIDTH_8)
gpio_set_value_cansleep(gpio_bus_switch, 1);
else
gpio_set_value_cansleep(gpio_bus_switch, 0);
return 0;
}
static unsigned long pcm990_camera_query_bus_param(struct soc_camera_link *link)
{
int ret;
if (gpio_bus_switch < 0) {
ret = gpio_request(PXA_NR_BUILTIN_GPIO, "camera");
if (!ret) {
gpio_bus_switch = PXA_NR_BUILTIN_GPIO;
gpio_direction_output(gpio_bus_switch, 0);
}
}
if (gpio_bus_switch >= 0)
return SOCAM_DATAWIDTH_8 | SOCAM_DATAWIDTH_10;
else
return SOCAM_DATAWIDTH_10;
}
static void pcm990_camera_free_bus(struct soc_camera_link *link)
{
if (gpio_bus_switch < 0)
return;
gpio_free(gpio_bus_switch);
gpio_bus_switch = -EINVAL;
}
/* Board I2C devices. */
static struct i2c_board_info __initdata pcm990_i2c_devices[] = {
{
/* Must initialize before the camera(s) */
I2C_BOARD_INFO("pca9536", 0x41),
.platform_data = &pca9536_data,
},
};
static struct mt9v022_platform_data mt9v022_pdata = {
.y_skip_top = 1,
};
static struct i2c_board_info pcm990_camera_i2c[] = {
{
I2C_BOARD_INFO("mt9v022", 0x48),
}, {
I2C_BOARD_INFO("mt9m001", 0x5d),
},
};
static struct soc_camera_link iclink[] = {
{
.bus_id = 0, /* Must match with the camera ID */
.board_info = &pcm990_camera_i2c[0],
.priv = &mt9v022_pdata,
.i2c_adapter_id = 0,
.query_bus_param = pcm990_camera_query_bus_param,
.set_bus_param = pcm990_camera_set_bus_param,
.free_bus = pcm990_camera_free_bus,
}, {
.bus_id = 0, /* Must match with the camera ID */
.board_info = &pcm990_camera_i2c[1],
.i2c_adapter_id = 0,
.query_bus_param = pcm990_camera_query_bus_param,
.set_bus_param = pcm990_camera_set_bus_param,
.free_bus = pcm990_camera_free_bus,
},
};
static struct platform_device pcm990_camera[] = {
{
.name = "soc-camera-pdrv",
.id = 0,
.dev = {
.platform_data = &iclink[0],
},
}, {
.name = "soc-camera-pdrv",
.id = 1,
.dev = {
.platform_data = &iclink[1],
},
},
};
#endif /* CONFIG_VIDEO_PXA27x ||CONFIG_VIDEO_PXA27x_MODULE */
/*
* system init for baseboard usage. Will be called by pcm027 init.
*
* Add platform devices present on this baseboard and init
* them from CPU side as far as required to use them later on
*/
void __init pcm990_baseboard_init(void)
{
pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_pin_config));
pcm990_cpld_base = ioremap(PCM990_CTRL_PHYS, PCM990_CTRL_SIZE);
if (!pcm990_cpld_base) {
pr_err("pcm990: failed to ioremap cpld\n");
return;
}
/* register CPLD's IRQ controller */
pcm990_init_irq();
#ifndef CONFIG_PCM990_DISPLAY_NONE
pxa_set_fb_info(NULL, &pcm990_fbinfo);
#endif
pwm_add_table(pcm990_pwm_lookup, ARRAY_SIZE(pcm990_pwm_lookup));
platform_device_register(&pcm990_backlight_device);
/* MMC */
pxa_set_mci_info(&pcm990_mci_platform_data);
/* USB host */
pxa_set_ohci_info(&pcm990_ohci_platform_data);
pxa_set_i2c_info(NULL);
pxa_set_ac97_info(NULL);
#if defined(CONFIG_VIDEO_PXA27x) || defined(CONFIG_VIDEO_PXA27x_MODULE)
pxa2xx_mfp_config(ARRAY_AND_SIZE(pcm990_camera_pin_config));
pxa_set_camera_info(&pcm990_pxacamera_platform_data);
i2c_register_board_info(0, ARRAY_AND_SIZE(pcm990_i2c_devices));
platform_device_register(&pcm990_camera[0]);
platform_device_register(&pcm990_camera[1]);
#endif
printk(KERN_INFO "PCM-990 Evaluation baseboard initialized\n");
}