linux_dsm_epyc7002/arch/arm/mach-pxa/cm-x300.c

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/*
* linux/arch/arm/mach-pxa/cm-x300.c
*
* Support for the CompuLab CM-X300 modules
*
* Copyright (C) 2008,2009 CompuLab Ltd.
*
* Mike Rapoport <mike@compulab.co.il>
* Igor Grinberg <grinberg@compulab.co.il>
*
* 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.
*/
#define pr_fmt(fmt) "%s: " fmt, __func__
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/interrupt.h>
#include <linux/init.h>
#include <linux/delay.h>
#include <linux/platform_device.h>
#include <linux/clk.h>
#include <linux/gpio.h>
spi: spi-gpio: Rewrite to use GPIO descriptors This converts the bit-banged GPIO SPI driver to looking up and using GPIO descriptors to get a handle on GPIO lines for SCK, MOSI, MISO and all CS lines. All existing board files are converted in one go to keep it all consistent. With these conversions I rarely find any interrim steps that makes any sense. Device tree probing and GPIO handling should work like before also after this patch. For board files, we stop using controller data to pass the GPIO line for chip select, instead we pass this as a GPIO descriptor lookup like everything else. In some s3c24xx machines the names of the SPI devices were set to "spi-gpio" rather than "spi_gpio" which can never have worked, I fixed it working (I guess) as part of this patch set. Sometimes I wonder how this code got upstream in the first place, it obviously is not tested. mach-s3c64xx/mach-smartq.c has the same problem and additionally defines the *same* GPIO line for MOSI and MISO which is not going to be accepted by gpiolib. As the lines were number 1,2,2 I assumed it was a typo and use lines 1,2,3. A comment gives awat that line 0 is chip select though no actual SPI device is provided for the LCD supposed to be on this bit-banged SPI bus. I left it intact instead of just deleting the bus though. Kill off board file code that try to initialize the SPI lines to the same values that they will later be set by the spi_gpio driver anyways. Given the huge number of weird things in these board files I do not think this code is very tested or put in with much afterthought anyways. In order to assert that we do not get performance regressions on this crucial bing-banged driver, a ran a script like this dumping the Ilitek ILI9322 regmap 10000 times (it has no caching obviously) on an otherwise idle system in two iterations before and after the patches: #!/bin/sh for run in `seq 10000` do cat /debug/regmap/spi0.0/registers > /dev/null done Before the patch: time test.sh real 3m 41.03s user 0m 29.41s sys 3m 7.22s time test.sh real 3m 44.24s user 0m 32.31s sys 3m 7.60s After the patch: time test.sh real 3m 41.32s user 0m 28.92s sys 3m 8.08s time test.sh real 3m 39.92s user 0m 30.20s sys 3m 5.56s So any performance differences seems to be in the error margin. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12 19:45:30 +07:00
#include <linux/gpio/machine.h>
#include <linux/dm9000.h>
#include <linux/leds.h>
#include <linux/platform_data/rtc-v3020.h>
#include <linux/pwm.h>
#include <linux/pwm_backlight.h>
#include <linux/i2c.h>
#include <linux/platform_data/pca953x.h>
#include <linux/platform_data/i2c-pxa.h>
#include <linux/mfd/da903x.h>
#include <linux/regulator/machine.h>
#include <linux/power_supply.h>
#include <linux/apm-emulation.h>
#include <linux/spi/spi.h>
#include <linux/spi/spi_gpio.h>
#include <linux/spi/tdo24m.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/setup.h>
#include <asm/system_info.h>
#include "pxa300.h"
#include "pxa27x-udc.h"
ARM: pxa: move platform_data definitions Platform data for device drivers should be defined in include/linux/platform_data/*.h, not in the architecture and platform specific directories. This moves such data out of the pxa include directories Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Acked-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Paul Parsons <lost.distance@yahoo.com> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Acked-By: Stefan Schmidt <stefan@openezx.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Daniel Ribeiro <drwyrm@gmail.com> Cc: Harald Welte <laforge@openezx.org> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Tomas Cech <sleep_walker@suse.cz> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Dan Williams <djbw@fb.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Liam Girdwood <lrg@ti.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: openezx-devel@lists.openezx.org
2012-08-24 20:16:48 +07:00
#include <linux/platform_data/video-pxafb.h>
#include <linux/platform_data/mmc-pxamci.h>
#include <linux/platform_data/usb-ohci-pxa27x.h>
#include <linux/platform_data/mtd-nand-pxa3xx.h>
#include <mach/audio.h>
ARM: pxa: move platform_data definitions Platform data for device drivers should be defined in include/linux/platform_data/*.h, not in the architecture and platform specific directories. This moves such data out of the pxa include directories Signed-off-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Acked-by: Nicolas Pitre <nico@linaro.org> Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com> Acked-by: Igor Grinberg <grinberg@compulab.co.il> Acked-by: Jeff Garzik <jgarzik@redhat.com> Acked-by: Marek Vasut <marex@denx.de> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Acked-by: Paul Parsons <lost.distance@yahoo.com> Acked-by: Vinod Koul <vinod.koul@linux.intel.com> Acked-By: Stefan Schmidt <stefan@openezx.org> Cc: Eric Miao <eric.y.miao@gmail.com> Cc: Haojian Zhuang <haojian.zhuang@gmail.com> Cc: Daniel Ribeiro <drwyrm@gmail.com> Cc: Harald Welte <laforge@openezx.org> Cc: Philipp Zabel <philipp.zabel@gmail.com> Cc: Tomas Cech <sleep_walker@suse.cz> Cc: Sergey Lapin <slapin@ossfans.org> Cc: Jonathan Cameron <jic23@cam.ac.uk> Cc: Dan Williams <djbw@fb.com> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Cc: Chris Ball <cjb@laptop.org> Cc: David Woodhouse <dwmw2@infradead.org> Cc: Samuel Ortiz <samuel@sortiz.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: Florian Tobias Schandinat <FlorianSchandinat@gmx.de> Cc: Liam Girdwood <lrg@ti.com> Cc: Jaroslav Kysela <perex@perex.cz> Cc: Takashi Iwai <tiwai@suse.de> Cc: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Cc: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Cc: openezx-devel@lists.openezx.org
2012-08-24 20:16:48 +07:00
#include <linux/platform_data/usb-pxa3xx-ulpi.h>
#include <asm/mach/map.h>
#include "generic.h"
#include "devices.h"
#define CM_X300_ETH_PHYS 0x08000010
#define GPIO82_MMC_IRQ (82)
#define GPIO85_MMC_WP (85)
#define CM_X300_MMC_IRQ PXA_GPIO_TO_IRQ(GPIO82_MMC_IRQ)
#define GPIO95_RTC_CS (95)
#define GPIO96_RTC_WR (96)
#define GPIO97_RTC_RD (97)
#define GPIO98_RTC_IO (98)
#define GPIO_ULPI_PHY_RST (127)
static mfp_cfg_t cm_x3xx_mfp_cfg[] __initdata = {
/* LCD */
GPIO54_LCD_LDD_0,
GPIO55_LCD_LDD_1,
GPIO56_LCD_LDD_2,
GPIO57_LCD_LDD_3,
GPIO58_LCD_LDD_4,
GPIO59_LCD_LDD_5,
GPIO60_LCD_LDD_6,
GPIO61_LCD_LDD_7,
GPIO62_LCD_LDD_8,
GPIO63_LCD_LDD_9,
GPIO64_LCD_LDD_10,
GPIO65_LCD_LDD_11,
GPIO66_LCD_LDD_12,
GPIO67_LCD_LDD_13,
GPIO68_LCD_LDD_14,
GPIO69_LCD_LDD_15,
GPIO72_LCD_FCLK,
GPIO73_LCD_LCLK,
GPIO74_LCD_PCLK,
GPIO75_LCD_BIAS,
/* BTUART */
GPIO111_UART2_RTS,
GPIO112_UART2_RXD | MFP_LPM_EDGE_FALL,
GPIO113_UART2_TXD,
GPIO114_UART2_CTS | MFP_LPM_EDGE_BOTH,
/* STUART */
GPIO109_UART3_TXD,
GPIO110_UART3_RXD | MFP_LPM_EDGE_FALL,
/* AC97 */
GPIO23_AC97_nACRESET,
GPIO24_AC97_SYSCLK,
GPIO29_AC97_BITCLK,
GPIO25_AC97_SDATA_IN_0,
GPIO27_AC97_SDATA_OUT,
GPIO28_AC97_SYNC,
/* Keypad */
GPIO115_KP_MKIN_0 | MFP_LPM_EDGE_BOTH,
GPIO116_KP_MKIN_1 | MFP_LPM_EDGE_BOTH,
GPIO117_KP_MKIN_2 | MFP_LPM_EDGE_BOTH,
GPIO118_KP_MKIN_3 | MFP_LPM_EDGE_BOTH,
GPIO119_KP_MKIN_4 | MFP_LPM_EDGE_BOTH,
GPIO120_KP_MKIN_5 | MFP_LPM_EDGE_BOTH,
GPIO2_2_KP_MKIN_6 | MFP_LPM_EDGE_BOTH,
GPIO3_2_KP_MKIN_7 | MFP_LPM_EDGE_BOTH,
GPIO121_KP_MKOUT_0,
GPIO122_KP_MKOUT_1,
GPIO123_KP_MKOUT_2,
GPIO124_KP_MKOUT_3,
GPIO125_KP_MKOUT_4,
GPIO4_2_KP_MKOUT_5,
/* MMC1 */
GPIO3_MMC1_DAT0,
GPIO4_MMC1_DAT1 | MFP_LPM_EDGE_BOTH,
GPIO5_MMC1_DAT2,
GPIO6_MMC1_DAT3,
GPIO7_MMC1_CLK,
GPIO8_MMC1_CMD, /* CMD0 for slot 0 */
/* MMC2 */
GPIO9_MMC2_DAT0,
GPIO10_MMC2_DAT1 | MFP_LPM_EDGE_BOTH,
GPIO11_MMC2_DAT2,
GPIO12_MMC2_DAT3,
GPIO13_MMC2_CLK,
GPIO14_MMC2_CMD,
/* FFUART */
GPIO30_UART1_RXD | MFP_LPM_EDGE_FALL,
GPIO31_UART1_TXD,
GPIO32_UART1_CTS,
GPIO37_UART1_RTS,
GPIO33_UART1_DCD,
GPIO34_UART1_DSR | MFP_LPM_EDGE_FALL,
GPIO35_UART1_RI,
GPIO36_UART1_DTR,
/* GPIOs */
GPIO82_GPIO | MFP_PULL_HIGH, /* MMC CD */
GPIO85_GPIO, /* MMC WP */
GPIO99_GPIO, /* Ethernet IRQ */
/* RTC GPIOs */
GPIO95_GPIO | MFP_LPM_DRIVE_HIGH, /* RTC CS */
GPIO96_GPIO | MFP_LPM_DRIVE_HIGH, /* RTC WR */
GPIO97_GPIO | MFP_LPM_DRIVE_HIGH, /* RTC RD */
GPIO98_GPIO, /* RTC IO */
/* Standard I2C */
GPIO21_I2C_SCL,
GPIO22_I2C_SDA,
/* PWM Backlight */
GPIO19_PWM2_OUT,
};
static mfp_cfg_t cm_x3xx_rev_lt130_mfp_cfg[] __initdata = {
/* GPIOs */
GPIO79_GPIO, /* LED */
GPIO77_GPIO, /* WiFi reset */
GPIO78_GPIO, /* BT reset */
};
static mfp_cfg_t cm_x3xx_rev_ge130_mfp_cfg[] __initdata = {
/* GPIOs */
GPIO76_GPIO, /* LED */
GPIO71_GPIO, /* WiFi reset */
GPIO70_GPIO, /* BT reset */
};
static mfp_cfg_t cm_x310_mfp_cfg[] __initdata = {
/* USB PORT 2 */
ULPI_STP,
ULPI_NXT,
ULPI_DIR,
GPIO30_ULPI_DATA_OUT_0,
GPIO31_ULPI_DATA_OUT_1,
GPIO32_ULPI_DATA_OUT_2,
GPIO33_ULPI_DATA_OUT_3,
GPIO34_ULPI_DATA_OUT_4,
GPIO35_ULPI_DATA_OUT_5,
GPIO36_ULPI_DATA_OUT_6,
GPIO37_ULPI_DATA_OUT_7,
GPIO38_ULPI_CLK,
/* external PHY reset pin */
GPIO127_GPIO,
/* USB PORT 3 */
GPIO77_USB_P3_1,
GPIO78_USB_P3_2,
GPIO79_USB_P3_3,
GPIO80_USB_P3_4,
GPIO81_USB_P3_5,
GPIO82_USB_P3_6,
GPIO0_2_USBH_PEN,
};
#if defined(CONFIG_DM9000) || defined(CONFIG_DM9000_MODULE)
static struct resource dm9000_resources[] = {
[0] = {
.start = CM_X300_ETH_PHYS,
.end = CM_X300_ETH_PHYS + 0x3,
.flags = IORESOURCE_MEM,
},
[1] = {
.start = CM_X300_ETH_PHYS + 0x4,
.end = CM_X300_ETH_PHYS + 0x4 + 500,
.flags = IORESOURCE_MEM,
},
[2] = {
.start = PXA_GPIO_TO_IRQ(mfp_to_gpio(MFP_PIN_GPIO99)),
.end = PXA_GPIO_TO_IRQ(mfp_to_gpio(MFP_PIN_GPIO99)),
.flags = IORESOURCE_IRQ | IORESOURCE_IRQ_HIGHEDGE,
}
};
static struct dm9000_plat_data cm_x300_dm9000_platdata = {
.flags = DM9000_PLATF_16BITONLY | DM9000_PLATF_NO_EEPROM,
};
static struct platform_device dm9000_device = {
.name = "dm9000",
.id = 0,
.num_resources = ARRAY_SIZE(dm9000_resources),
.resource = dm9000_resources,
.dev = {
.platform_data = &cm_x300_dm9000_platdata,
}
};
static void __init cm_x300_init_dm9000(void)
{
platform_device_register(&dm9000_device);
}
#else
static inline void cm_x300_init_dm9000(void) {}
#endif
/* LCD */
#if defined(CONFIG_FB_PXA) || defined(CONFIG_FB_PXA_MODULE)
static struct pxafb_mode_info cm_x300_lcd_modes[] = {
[0] = {
.pixclock = 38250,
.bpp = 16,
.xres = 480,
.yres = 640,
.hsync_len = 8,
.vsync_len = 2,
.left_margin = 8,
.upper_margin = 2,
.right_margin = 24,
.lower_margin = 4,
.cmap_greyscale = 0,
},
[1] = {
.pixclock = 153800,
.bpp = 16,
.xres = 240,
.yres = 320,
.hsync_len = 8,
.vsync_len = 2,
.left_margin = 8,
.upper_margin = 2,
.right_margin = 88,
.lower_margin = 2,
.cmap_greyscale = 0,
},
};
static struct pxafb_mach_info cm_x300_lcd = {
.modes = cm_x300_lcd_modes,
.num_modes = ARRAY_SIZE(cm_x300_lcd_modes),
.lcd_conn = LCD_COLOR_TFT_16BPP | LCD_PCLK_EDGE_FALL,
};
static void __init cm_x300_init_lcd(void)
{
pxa_set_fb_info(NULL, &cm_x300_lcd);
}
#else
static inline void cm_x300_init_lcd(void) {}
#endif
#if defined(CONFIG_BACKLIGHT_PWM) || defined(CONFIG_BACKLIGHT_PWM_MODULE)
static struct pwm_lookup cm_x300_pwm_lookup[] = {
PWM_LOOKUP("pxa27x-pwm.0", 1, "pwm-backlight.0", NULL, 10000,
PWM_POLARITY_NORMAL),
};
static struct platform_pwm_backlight_data cm_x300_backlight_data = {
.max_brightness = 100,
.dft_brightness = 100,
.enable_gpio = -1,
};
static struct platform_device cm_x300_backlight_device = {
.name = "pwm-backlight",
.dev = {
.parent = &pxa27x_device_pwm0.dev,
.platform_data = &cm_x300_backlight_data,
},
};
static void cm_x300_init_bl(void)
{
pwm_add_table(cm_x300_pwm_lookup, ARRAY_SIZE(cm_x300_pwm_lookup));
platform_device_register(&cm_x300_backlight_device);
}
#else
static inline void cm_x300_init_bl(void) {}
#endif
#if defined(CONFIG_SPI_GPIO) || defined(CONFIG_SPI_GPIO_MODULE)
#define GPIO_LCD_BASE (144)
#define GPIO_LCD_DIN (GPIO_LCD_BASE + 8) /* aux_gpio3_0 */
#define GPIO_LCD_DOUT (GPIO_LCD_BASE + 9) /* aux_gpio3_1 */
#define GPIO_LCD_SCL (GPIO_LCD_BASE + 10) /* aux_gpio3_2 */
#define GPIO_LCD_CS (GPIO_LCD_BASE + 11) /* aux_gpio3_3 */
#define LCD_SPI_BUS_NUM (1)
static struct spi_gpio_platform_data cm_x300_spi_gpio_pdata = {
.num_chipselect = 1,
};
static struct platform_device cm_x300_spi_gpio = {
.name = "spi_gpio",
.id = LCD_SPI_BUS_NUM,
.dev = {
.platform_data = &cm_x300_spi_gpio_pdata,
},
};
spi: spi-gpio: Rewrite to use GPIO descriptors This converts the bit-banged GPIO SPI driver to looking up and using GPIO descriptors to get a handle on GPIO lines for SCK, MOSI, MISO and all CS lines. All existing board files are converted in one go to keep it all consistent. With these conversions I rarely find any interrim steps that makes any sense. Device tree probing and GPIO handling should work like before also after this patch. For board files, we stop using controller data to pass the GPIO line for chip select, instead we pass this as a GPIO descriptor lookup like everything else. In some s3c24xx machines the names of the SPI devices were set to "spi-gpio" rather than "spi_gpio" which can never have worked, I fixed it working (I guess) as part of this patch set. Sometimes I wonder how this code got upstream in the first place, it obviously is not tested. mach-s3c64xx/mach-smartq.c has the same problem and additionally defines the *same* GPIO line for MOSI and MISO which is not going to be accepted by gpiolib. As the lines were number 1,2,2 I assumed it was a typo and use lines 1,2,3. A comment gives awat that line 0 is chip select though no actual SPI device is provided for the LCD supposed to be on this bit-banged SPI bus. I left it intact instead of just deleting the bus though. Kill off board file code that try to initialize the SPI lines to the same values that they will later be set by the spi_gpio driver anyways. Given the huge number of weird things in these board files I do not think this code is very tested or put in with much afterthought anyways. In order to assert that we do not get performance regressions on this crucial bing-banged driver, a ran a script like this dumping the Ilitek ILI9322 regmap 10000 times (it has no caching obviously) on an otherwise idle system in two iterations before and after the patches: #!/bin/sh for run in `seq 10000` do cat /debug/regmap/spi0.0/registers > /dev/null done Before the patch: time test.sh real 3m 41.03s user 0m 29.41s sys 3m 7.22s time test.sh real 3m 44.24s user 0m 32.31s sys 3m 7.60s After the patch: time test.sh real 3m 41.32s user 0m 28.92s sys 3m 8.08s time test.sh real 3m 39.92s user 0m 30.20s sys 3m 5.56s So any performance differences seems to be in the error margin. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12 19:45:30 +07:00
static struct gpiod_lookup_table cm_x300_spi_gpiod_table = {
.dev_id = "spi_gpio",
.table = {
GPIO_LOOKUP("gpio-pxa", GPIO_LCD_SCL,
"sck", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_LCD_DIN,
"mosi", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_LCD_DOUT,
"miso", GPIO_ACTIVE_HIGH),
GPIO_LOOKUP("gpio-pxa", GPIO_LCD_CS,
"cs", GPIO_ACTIVE_HIGH),
{ },
},
};
static struct tdo24m_platform_data cm_x300_tdo24m_pdata = {
.model = TDO35S,
};
static struct spi_board_info cm_x300_spi_devices[] __initdata = {
{
.modalias = "tdo24m",
.max_speed_hz = 1000000,
.bus_num = LCD_SPI_BUS_NUM,
.chip_select = 0,
.platform_data = &cm_x300_tdo24m_pdata,
},
};
static void __init cm_x300_init_spi(void)
{
spi_register_board_info(cm_x300_spi_devices,
ARRAY_SIZE(cm_x300_spi_devices));
spi: spi-gpio: Rewrite to use GPIO descriptors This converts the bit-banged GPIO SPI driver to looking up and using GPIO descriptors to get a handle on GPIO lines for SCK, MOSI, MISO and all CS lines. All existing board files are converted in one go to keep it all consistent. With these conversions I rarely find any interrim steps that makes any sense. Device tree probing and GPIO handling should work like before also after this patch. For board files, we stop using controller data to pass the GPIO line for chip select, instead we pass this as a GPIO descriptor lookup like everything else. In some s3c24xx machines the names of the SPI devices were set to "spi-gpio" rather than "spi_gpio" which can never have worked, I fixed it working (I guess) as part of this patch set. Sometimes I wonder how this code got upstream in the first place, it obviously is not tested. mach-s3c64xx/mach-smartq.c has the same problem and additionally defines the *same* GPIO line for MOSI and MISO which is not going to be accepted by gpiolib. As the lines were number 1,2,2 I assumed it was a typo and use lines 1,2,3. A comment gives awat that line 0 is chip select though no actual SPI device is provided for the LCD supposed to be on this bit-banged SPI bus. I left it intact instead of just deleting the bus though. Kill off board file code that try to initialize the SPI lines to the same values that they will later be set by the spi_gpio driver anyways. Given the huge number of weird things in these board files I do not think this code is very tested or put in with much afterthought anyways. In order to assert that we do not get performance regressions on this crucial bing-banged driver, a ran a script like this dumping the Ilitek ILI9322 regmap 10000 times (it has no caching obviously) on an otherwise idle system in two iterations before and after the patches: #!/bin/sh for run in `seq 10000` do cat /debug/regmap/spi0.0/registers > /dev/null done Before the patch: time test.sh real 3m 41.03s user 0m 29.41s sys 3m 7.22s time test.sh real 3m 44.24s user 0m 32.31s sys 3m 7.60s After the patch: time test.sh real 3m 41.32s user 0m 28.92s sys 3m 8.08s time test.sh real 3m 39.92s user 0m 30.20s sys 3m 5.56s So any performance differences seems to be in the error margin. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Olof Johansson <olof@lixom.net> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
2018-02-12 19:45:30 +07:00
gpiod_add_lookup_table(&cm_x300_spi_gpiod_table);
platform_device_register(&cm_x300_spi_gpio);
}
#else
static inline void cm_x300_init_spi(void) {}
#endif
#if defined(CONFIG_SND_PXA2XX_LIB_AC97)
static void __init cm_x300_init_ac97(void)
{
pxa_set_ac97_info(NULL);
}
#else
static inline void cm_x300_init_ac97(void) {}
#endif
#if IS_ENABLED(CONFIG_MTD_NAND_MARVELL)
static struct mtd_partition cm_x300_nand_partitions[] = {
[0] = {
.name = "OBM",
.offset = 0,
.size = SZ_256K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
[1] = {
.name = "U-Boot",
.offset = MTDPART_OFS_APPEND,
.size = SZ_256K,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
[2] = {
.name = "Environment",
.offset = MTDPART_OFS_APPEND,
.size = SZ_256K,
},
[3] = {
.name = "reserved",
.offset = MTDPART_OFS_APPEND,
.size = SZ_256K + SZ_1M,
.mask_flags = MTD_WRITEABLE, /* force read-only */
},
[4] = {
.name = "kernel",
.offset = MTDPART_OFS_APPEND,
.size = SZ_4M,
},
[5] = {
.name = "fs",
.offset = MTDPART_OFS_APPEND,
.size = MTDPART_SIZ_FULL,
},
};
static struct pxa3xx_nand_platform_data cm_x300_nand_info = {
.keep_config = 1,
.parts = cm_x300_nand_partitions,
.nr_parts = ARRAY_SIZE(cm_x300_nand_partitions),
};
static void __init cm_x300_init_nand(void)
{
pxa3xx_set_nand_info(&cm_x300_nand_info);
}
#else
static inline void cm_x300_init_nand(void) {}
#endif
#if defined(CONFIG_MMC) || defined(CONFIG_MMC_MODULE)
static struct pxamci_platform_data cm_x300_mci_platform_data = {
.detect_delay_ms = 200,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.gpio_card_detect = GPIO82_MMC_IRQ,
.gpio_card_ro = GPIO85_MMC_WP,
.gpio_power = -1,
};
/* The second MMC slot of CM-X300 is hardwired to Libertas card and has
no detection/ro pins */
static int cm_x300_mci2_init(struct device *dev,
irq_handler_t cm_x300_detect_int,
void *data)
{
return 0;
}
static void cm_x300_mci2_exit(struct device *dev, void *data)
{
}
static struct pxamci_platform_data cm_x300_mci2_platform_data = {
.detect_delay_ms = 200,
.ocr_mask = MMC_VDD_32_33|MMC_VDD_33_34,
.init = cm_x300_mci2_init,
.exit = cm_x300_mci2_exit,
.gpio_card_detect = -1,
.gpio_card_ro = -1,
.gpio_power = -1,
};
static void __init cm_x300_init_mmc(void)
{
pxa_set_mci_info(&cm_x300_mci_platform_data);
pxa3xx_set_mci2_info(&cm_x300_mci2_platform_data);
}
#else
static inline void cm_x300_init_mmc(void) {}
#endif
#if defined(CONFIG_PXA310_ULPI)
static struct clk *pout_clk;
static int cm_x300_ulpi_phy_reset(void)
{
int err;
/* reset the PHY */
err = gpio_request_one(GPIO_ULPI_PHY_RST, GPIOF_OUT_INIT_LOW,
"ulpi reset");
if (err) {
pr_err("failed to request ULPI reset GPIO: %d\n", err);
return err;
}
msleep(10);
gpio_set_value(GPIO_ULPI_PHY_RST, 1);
msleep(10);
gpio_free(GPIO_ULPI_PHY_RST);
return 0;
}
static int cm_x300_u2d_init(struct device *dev)
{
int err = 0;
if (cpu_is_pxa310()) {
/* CLK_POUT is connected to the ULPI PHY */
pout_clk = clk_get(NULL, "CLK_POUT");
if (IS_ERR(pout_clk)) {
err = PTR_ERR(pout_clk);
pr_err("failed to get CLK_POUT: %d\n", err);
return err;
}
ARM: pxa: ulpi: fix ulpi timeout and slowpath warn Both cm-x300 and pxa3xx-ulpi use the plain clk_{en,dis}able() API. With the new clocking framework this results in warnings of type: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:714 clk_core_enable+0x90/0x9c Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 4.15.0-rc5-cm-x300+ #15 Hardware name: CM-X300 module [<c001007c>] (unwind_backtrace) from [<c000df94>] (show_stack+0x10/0x14) [<c000df94>] (show_stack) from [<c00199a8>] (__warn+0xd8/0x100) [<c00199a8>] (__warn) from [<c0019a0c>] (warn_slowpath_null+0x3c/0x48) [<c0019a0c>] (warn_slowpath_null) from [<c024e8c0>] (clk_core_enable+0x90/0x9c) [<c024e8c0>] (clk_core_enable) from [<c024ea54>] (clk_core_enable_lock+0x18/0x2c) [<c024ea54>] (clk_core_enable_lock) from [<c0016994>] (cm_x300_u2d_init+0x4c/0xe8) [<c0016994>] (cm_x300_u2d_init) from [<c00163e0>] (pxa3xx_u2d_probe+0xe0/0x244) [<c00163e0>] (pxa3xx_u2d_probe) from [<c0283de0>] (platform_drv_probe+0x38/0x88) ... ------------[ cut here ]------------ and alike... And finally, it results in: ------------[ cut here ]------------ pxa310_ulpi_poll: ULPI access timed out! OTG transceiver init failed ------------[ cut here ]------------ It might be that disabling the warning in kernel config would also do the job, but IMO a better solution would be to switch to clk_prepare_enable() and clk_disable_unprepare() APIs. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2017-12-26 20:32:53 +07:00
clk_prepare_enable(pout_clk);
err = cm_x300_ulpi_phy_reset();
if (err) {
clk_disable(pout_clk);
clk_put(pout_clk);
}
}
return err;
}
static void cm_x300_u2d_exit(struct device *dev)
{
if (cpu_is_pxa310()) {
ARM: pxa: ulpi: fix ulpi timeout and slowpath warn Both cm-x300 and pxa3xx-ulpi use the plain clk_{en,dis}able() API. With the new clocking framework this results in warnings of type: ------------[ cut here ]------------ WARNING: CPU: 0 PID: 1 at drivers/clk/clk.c:714 clk_core_enable+0x90/0x9c Modules linked in: CPU: 0 PID: 1 Comm: swapper Not tainted 4.15.0-rc5-cm-x300+ #15 Hardware name: CM-X300 module [<c001007c>] (unwind_backtrace) from [<c000df94>] (show_stack+0x10/0x14) [<c000df94>] (show_stack) from [<c00199a8>] (__warn+0xd8/0x100) [<c00199a8>] (__warn) from [<c0019a0c>] (warn_slowpath_null+0x3c/0x48) [<c0019a0c>] (warn_slowpath_null) from [<c024e8c0>] (clk_core_enable+0x90/0x9c) [<c024e8c0>] (clk_core_enable) from [<c024ea54>] (clk_core_enable_lock+0x18/0x2c) [<c024ea54>] (clk_core_enable_lock) from [<c0016994>] (cm_x300_u2d_init+0x4c/0xe8) [<c0016994>] (cm_x300_u2d_init) from [<c00163e0>] (pxa3xx_u2d_probe+0xe0/0x244) [<c00163e0>] (pxa3xx_u2d_probe) from [<c0283de0>] (platform_drv_probe+0x38/0x88) ... ------------[ cut here ]------------ and alike... And finally, it results in: ------------[ cut here ]------------ pxa310_ulpi_poll: ULPI access timed out! OTG transceiver init failed ------------[ cut here ]------------ It might be that disabling the warning in kernel config would also do the job, but IMO a better solution would be to switch to clk_prepare_enable() and clk_disable_unprepare() APIs. Signed-off-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
2017-12-26 20:32:53 +07:00
clk_disable_unprepare(pout_clk);
clk_put(pout_clk);
}
}
static struct pxa3xx_u2d_platform_data cm_x300_u2d_platform_data = {
.ulpi_mode = ULPI_SER_6PIN,
.init = cm_x300_u2d_init,
.exit = cm_x300_u2d_exit,
};
static void cm_x300_init_u2d(void)
{
pxa3xx_set_u2d_info(&cm_x300_u2d_platform_data);
}
#else
static inline void cm_x300_init_u2d(void) {}
#endif
#if defined(CONFIG_USB_OHCI_HCD) || defined(CONFIG_USB_OHCI_HCD_MODULE)
static int cm_x300_ohci_init(struct device *dev)
{
if (cpu_is_pxa300())
UP2OCR = UP2OCR_HXS
| UP2OCR_HXOE | UP2OCR_DMPDE | UP2OCR_DPPDE;
return 0;
}
static struct pxaohci_platform_data cm_x300_ohci_platform_data = {
.port_mode = PMM_PERPORT_MODE,
.flags = ENABLE_PORT_ALL | POWER_CONTROL_LOW,
.init = cm_x300_ohci_init,
};
static void __init cm_x300_init_ohci(void)
{
pxa_set_ohci_info(&cm_x300_ohci_platform_data);
}
#else
static inline void cm_x300_init_ohci(void) {}
#endif
#if defined(CONFIG_LEDS_GPIO) || defined(CONFIG_LEDS_GPIO_MODULE)
static struct gpio_led cm_x300_leds[] = {
[0] = {
.name = "cm-x300:green",
.default_trigger = "heartbeat",
.active_low = 1,
},
};
static struct gpio_led_platform_data cm_x300_gpio_led_pdata = {
.num_leds = ARRAY_SIZE(cm_x300_leds),
.leds = cm_x300_leds,
};
static struct platform_device cm_x300_led_device = {
.name = "leds-gpio",
.id = -1,
.dev = {
.platform_data = &cm_x300_gpio_led_pdata,
},
};
static void __init cm_x300_init_leds(void)
{
if (system_rev < 130)
cm_x300_leds[0].gpio = 79;
else
cm_x300_leds[0].gpio = 76;
platform_device_register(&cm_x300_led_device);
}
#else
static inline void cm_x300_init_leds(void) {}
#endif
#if defined(CONFIG_I2C) || defined(CONFIG_I2C_MODULE)
/* PCA9555 */
static struct pca953x_platform_data cm_x300_gpio_ext_pdata_0 = {
.gpio_base = 128,
};
static struct pca953x_platform_data cm_x300_gpio_ext_pdata_1 = {
.gpio_base = 144,
};
static struct i2c_board_info cm_x300_gpio_ext_info[] = {
[0] = {
I2C_BOARD_INFO("pca9555", 0x24),
.platform_data = &cm_x300_gpio_ext_pdata_0,
},
[1] = {
I2C_BOARD_INFO("pca9555", 0x25),
.platform_data = &cm_x300_gpio_ext_pdata_1,
},
};
static void __init cm_x300_init_i2c(void)
{
pxa_set_i2c_info(NULL);
i2c_register_board_info(0, cm_x300_gpio_ext_info,
ARRAY_SIZE(cm_x300_gpio_ext_info));
}
#else
static inline void cm_x300_init_i2c(void) {}
#endif
#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
struct v3020_platform_data cm_x300_v3020_pdata = {
.use_gpio = 1,
.gpio_cs = GPIO95_RTC_CS,
.gpio_wr = GPIO96_RTC_WR,
.gpio_rd = GPIO97_RTC_RD,
.gpio_io = GPIO98_RTC_IO,
};
static struct platform_device cm_x300_rtc_device = {
.name = "v3020",
.id = -1,
.dev = {
.platform_data = &cm_x300_v3020_pdata,
}
};
static void __init cm_x300_init_rtc(void)
{
platform_device_register(&cm_x300_rtc_device);
}
#else
static inline void cm_x300_init_rtc(void) {}
#endif
/* Battery */
struct power_supply_info cm_x300_psy_info = {
.name = "battery",
.technology = POWER_SUPPLY_TECHNOLOGY_LIPO,
.voltage_max_design = 4200000,
.voltage_min_design = 3000000,
.use_for_apm = 1,
};
static void cm_x300_battery_low(void)
{
#if defined(CONFIG_APM_EMULATION)
apm_queue_event(APM_LOW_BATTERY);
#endif
}
static void cm_x300_battery_critical(void)
{
#if defined(CONFIG_APM_EMULATION)
apm_queue_event(APM_CRITICAL_SUSPEND);
#endif
}
struct da9030_battery_info cm_x300_battery_info = {
.battery_info = &cm_x300_psy_info,
.charge_milliamp = 1000,
.charge_millivolt = 4200,
.vbat_low = 3600,
.vbat_crit = 3400,
.vbat_charge_start = 4100,
.vbat_charge_stop = 4200,
.vbat_charge_restart = 4000,
.vcharge_min = 3200,
.vcharge_max = 5500,
.tbat_low = 197,
.tbat_high = 78,
.tbat_restart = 100,
.batmon_interval = 0,
.battery_low = cm_x300_battery_low,
.battery_critical = cm_x300_battery_critical,
};
static struct regulator_consumer_supply buck2_consumers[] = {
REGULATOR_SUPPLY("vcc_core", NULL),
};
static struct regulator_init_data buck2_data = {
.constraints = {
.min_uV = 1375000,
.max_uV = 1375000,
.state_mem = {
.enabled = 0,
},
.valid_ops_mask = REGULATOR_CHANGE_VOLTAGE,
.apply_uV = 1,
},
.num_consumer_supplies = ARRAY_SIZE(buck2_consumers),
.consumer_supplies = buck2_consumers,
};
/* DA9030 */
struct da903x_subdev_info cm_x300_da9030_subdevs[] = {
{
.name = "da903x-battery",
.id = DA9030_ID_BAT,
.platform_data = &cm_x300_battery_info,
},
{
.name = "da903x-regulator",
.id = DA9030_ID_BUCK2,
.platform_data = &buck2_data,
},
};
static struct da903x_platform_data cm_x300_da9030_info = {
.num_subdevs = ARRAY_SIZE(cm_x300_da9030_subdevs),
.subdevs = cm_x300_da9030_subdevs,
};
static struct i2c_board_info cm_x300_pmic_info = {
I2C_BOARD_INFO("da9030", 0x49),
.irq = IRQ_WAKEUP0,
.platform_data = &cm_x300_da9030_info,
};
static struct i2c_pxa_platform_data cm_x300_pwr_i2c_info = {
.use_pio = 1,
};
static void __init cm_x300_init_da9030(void)
{
pxa3xx_set_i2c_power_info(&cm_x300_pwr_i2c_info);
i2c_register_board_info(1, &cm_x300_pmic_info, 1);
irq_set_irq_wake(IRQ_WAKEUP0, 1);
}
/* wi2wi gpio setting for system_rev >= 130 */
static struct gpio cm_x300_wi2wi_gpios[] __initdata = {
{ 71, GPIOF_OUT_INIT_HIGH, "wlan en" },
{ 70, GPIOF_OUT_INIT_HIGH, "bt reset" },
};
static void __init cm_x300_init_wi2wi(void)
{
int err;
if (system_rev < 130) {
cm_x300_wi2wi_gpios[0].gpio = 77; /* wlan en */
cm_x300_wi2wi_gpios[1].gpio = 78; /* bt reset */
}
/* Libertas and CSR reset */
err = gpio_request_array(ARRAY_AND_SIZE(cm_x300_wi2wi_gpios));
if (err) {
pr_err("failed to request wifi/bt gpios: %d\n", err);
return;
}
udelay(10);
gpio_set_value(cm_x300_wi2wi_gpios[1].gpio, 0);
udelay(10);
gpio_set_value(cm_x300_wi2wi_gpios[1].gpio, 1);
gpio_free_array(ARRAY_AND_SIZE(cm_x300_wi2wi_gpios));
}
/* MFP */
static void __init cm_x300_init_mfp(void)
{
/* board-processor specific GPIO initialization */
pxa3xx_mfp_config(ARRAY_AND_SIZE(cm_x3xx_mfp_cfg));
if (system_rev < 130)
pxa3xx_mfp_config(ARRAY_AND_SIZE(cm_x3xx_rev_lt130_mfp_cfg));
else
pxa3xx_mfp_config(ARRAY_AND_SIZE(cm_x3xx_rev_ge130_mfp_cfg));
if (cpu_is_pxa310())
pxa3xx_mfp_config(ARRAY_AND_SIZE(cm_x310_mfp_cfg));
}
static void __init cm_x300_init(void)
{
cm_x300_init_mfp();
pxa_set_btuart_info(NULL);
pxa_set_stuart_info(NULL);
if (cpu_is_pxa300())
pxa_set_ffuart_info(NULL);
cm_x300_init_da9030();
cm_x300_init_dm9000();
cm_x300_init_lcd();
cm_x300_init_u2d();
cm_x300_init_ohci();
cm_x300_init_mmc();
cm_x300_init_nand();
cm_x300_init_leds();
cm_x300_init_i2c();
cm_x300_init_spi();
cm_x300_init_rtc();
cm_x300_init_ac97();
cm_x300_init_wi2wi();
cm_x300_init_bl();
regulator_has_full_constraints();
}
static void __init cm_x300_fixup(struct tag *tags, char **cmdline)
{
/* Make sure that mi->bank[0].start = PHYS_ADDR */
for (; tags->hdr.size; tags = tag_next(tags))
if (tags->hdr.tag == ATAG_MEM &&
tags->u.mem.start == 0x80000000) {
tags->u.mem.start = 0xa0000000;
break;
}
}
MACHINE_START(CM_X300, "CM-X300 module")
.atag_offset = 0x100,
.map_io = pxa3xx_map_io,
.nr_irqs = PXA_NR_IRQS,
.init_irq = pxa3xx_init_irq,
.handle_irq = pxa3xx_handle_irq,
.init_time = pxa_timer_init,
.init_machine = cm_x300_init,
.fixup = cm_x300_fixup,
.restart = pxa_restart,
MACHINE_END