src/kernel/linux/v4.14/arch/arm/mach-omap2/pdata-quirks.c

/*
 * Legacy platform_data quirks
 *
 * Copyright (C) 2013 Texas Instruments
 *
 * 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/clk.h>
#include <linux/davinci_emac.h>
#include <linux/gpio.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/of_platform.h>
#include <linux/ti_wilink_st.h>
#include <linux/wl12xx.h>
#include <linux/mmc/card.h>
#include <linux/mmc/host.h>
#include <linux/regulator/machine.h>
#include <linux/regulator/fixed.h>

#include <linux/platform_data/pinctrl-single.h>
#include <linux/platform_data/hsmmc-omap.h>
#include <linux/platform_data/iommu-omap.h>
#include <linux/platform_data/wkup_m3.h>
#include <linux/platform_data/pwm_omap_dmtimer.h>
#include <linux/platform_data/media/ir-rx51.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
#include <plat/dmtimer.h>

#include "common.h"
#include "common-board-devices.h"
#include "control.h"
#include "omap_device.h"
#include "omap-pm.h"
#include "omap-secure.h"
#include "soc.h"
#include "hsmmc.h"

static struct omap_hsmmc_platform_data __maybe_unused mmc_pdata[2];

struct pdata_init {
	const char *compatible;
	void (*fn)(void);
};

static struct of_dev_auxdata omap_auxdata_lookup[];
static struct twl4030_gpio_platform_data twl_gpio_auxdata;

#ifdef CONFIG_MACH_NOKIA_N8X0
static void __init omap2420_n8x0_legacy_init(void)
{
	omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
}
#else
#define omap2420_n8x0_legacy_init	NULL
#endif

#ifdef CONFIG_ARCH_OMAP3
/*
 * Configures GPIOs 126, 127 and 129 to 1.8V mode instead of 3.0V
 * mode for MMC1 in case bootloader did not configure things.
 * Note that if the pins are used for MMC1, pbias-regulator
 * manages the IO voltage.
 */
static void __init omap3_gpio126_127_129(void)
{
	u32 reg;

	reg = omap_ctrl_readl(OMAP343X_CONTROL_PBIAS_LITE);
	reg &= ~OMAP343X_PBIASLITEVMODE1;
	reg |= OMAP343X_PBIASLITEPWRDNZ1;
	omap_ctrl_writel(reg, OMAP343X_CONTROL_PBIAS_LITE);
	if (cpu_is_omap3630()) {
		reg = omap_ctrl_readl(OMAP34XX_CONTROL_WKUP_CTRL);
		reg |= OMAP36XX_GPIO_IO_PWRDNZ;
		omap_ctrl_writel(reg, OMAP34XX_CONTROL_WKUP_CTRL);
	}
}

static void __init hsmmc2_internal_input_clk(void)
{
	u32 reg;

	reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
	reg |= OMAP2_MMCSDIO2ADPCLKISEL;
	omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
}

static struct iommu_platform_data omap3_iommu_pdata = {
	.reset_name = "mmu",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};

static int omap3_sbc_t3730_twl_callback(struct device *dev,
					   unsigned gpio,
					   unsigned ngpio)
{
	int res;

	res = gpio_request_one(gpio + 2, GPIOF_OUT_INIT_HIGH,
			       "wlan pwr");
	if (res)
		return res;

	gpio_export(gpio, 0);

	return 0;
}

static void __init omap3_sbc_t3x_usb_hub_init(int gpio, char *hub_name)
{
	int err = gpio_request_one(gpio, GPIOF_OUT_INIT_LOW, hub_name);

	if (err) {
		pr_err("SBC-T3x: %s reset gpio request failed: %d\n",
			hub_name, err);
		return;
	}

	gpio_export(gpio, 0);

	udelay(10);
	gpio_set_value(gpio, 1);
	msleep(1);
}

static void __init omap3_sbc_t3730_twl_init(void)
{
	twl_gpio_auxdata.setup = omap3_sbc_t3730_twl_callback;
}

static void __init omap3_sbc_t3730_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
}

static void __init omap3_sbc_t3530_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(167, "sb-t35 usb hub");
}

static struct ti_st_plat_data wilink_pdata = {
	.nshutdown_gpio = 137,
	.dev_name = "/dev/ttyO1",
	.flow_cntrl = 1,
	.baud_rate = 300000,
};

static struct platform_device wl18xx_device = {
	.name	= "kim",
	.id	= -1,
	.dev	= {
		.platform_data = &wilink_pdata,
	}
};

static struct ti_st_plat_data wilink7_pdata = {
	.nshutdown_gpio = 162,
	.dev_name = "/dev/ttyO1",
	.flow_cntrl = 1,
	.baud_rate = 3000000,
};

static struct platform_device wl128x_device = {
	.name	= "kim",
	.id	= -1,
	.dev	= {
		.platform_data = &wilink7_pdata,
	}
};

static struct platform_device btwilink_device = {
	.name	= "btwilink",
	.id	= -1,
};

static void __init omap3_igep0020_rev_f_legacy_init(void)
{
	platform_device_register(&wl18xx_device);
	platform_device_register(&btwilink_device);
}

static void __init omap3_igep0030_rev_g_legacy_init(void)
{
	platform_device_register(&wl18xx_device);
	platform_device_register(&btwilink_device);
}

static void __init omap3_evm_legacy_init(void)
{
	hsmmc2_internal_input_clk();
}

static void am35xx_enable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
	      AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static void am35xx_disable_emac_int(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
	v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
	omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
	omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
}

static struct emac_platform_data am35xx_emac_pdata = {
	.interrupt_enable	= am35xx_enable_emac_int,
	.interrupt_disable	= am35xx_disable_emac_int,
};

static void __init am35xx_emac_reset(void)
{
	u32 v;

	v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
	v &= ~AM35XX_CPGMACSS_SW_RST;
	omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
	omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
}

static struct gpio cm_t3517_wlan_gpios[] __initdata = {
	{ 56,	GPIOF_OUT_INIT_HIGH,	"wlan pwr" },
	{ 4,	GPIOF_OUT_INIT_HIGH,	"xcvr noe" },
};

static void __init omap3_sbc_t3517_wifi_init(void)
{
	int err = gpio_request_array(cm_t3517_wlan_gpios,
				ARRAY_SIZE(cm_t3517_wlan_gpios));
	if (err) {
		pr_err("SBC-T3517: wl12xx gpios request failed: %d\n", err);
		return;
	}

	gpio_export(cm_t3517_wlan_gpios[0].gpio, 0);
	gpio_export(cm_t3517_wlan_gpios[1].gpio, 0);

	msleep(100);
	gpio_set_value(cm_t3517_wlan_gpios[1].gpio, 0);
}

static void __init omap3_sbc_t3517_legacy_init(void)
{
	omap3_sbc_t3x_usb_hub_init(152, "cm-t3517 usb hub");
	omap3_sbc_t3x_usb_hub_init(98, "sb-t35 usb hub");
	am35xx_emac_reset();
	hsmmc2_internal_input_clk();
	omap3_sbc_t3517_wifi_init();
}

static void __init am3517_evm_legacy_init(void)
{
	am35xx_emac_reset();
}

static struct platform_device omap3_rom_rng_device = {
	.name		= "omap3-rom-rng",
	.id		= -1,
	.dev	= {
		.platform_data	= rx51_secure_rng_call,
	},
};

static void __init nokia_n900_legacy_init(void)
{
	hsmmc2_internal_input_clk();
	mmc_pdata[0].name = "external";
	mmc_pdata[1].name = "internal";

	if (omap_type() == OMAP2_DEVICE_TYPE_SEC) {
		if (IS_ENABLED(CONFIG_ARM_ERRATA_430973)) {
			pr_info("RX-51: Enabling ARM errata 430973 workaround\n");
			/* set IBE to 1 */
			rx51_secure_update_aux_cr(BIT(6), 0);
		} else {
			pr_warn("RX-51: Not enabling ARM errata 430973 workaround\n");
			pr_warn("Thumb binaries may crash randomly without this workaround\n");
		}

		pr_info("RX-51: Registering OMAP3 HWRNG device\n");
		platform_device_register(&omap3_rom_rng_device);
	}
}

static void __init omap3_tao3530_legacy_init(void)
{
	hsmmc2_internal_input_clk();
}

static void __init omap3_logicpd_torpedo_init(void)
{
	omap3_gpio126_127_129();
	platform_device_register(&wl128x_device);
	platform_device_register(&btwilink_device);
}

/* omap3pandora legacy devices */

static struct platform_device pandora_backlight = {
	.name	= "pandora-backlight",
	.id	= -1,
};

static void __init omap3_pandora_legacy_init(void)
{
	platform_device_register(&pandora_backlight);
}
#endif /* CONFIG_ARCH_OMAP3 */

#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
static struct iommu_platform_data omap4_iommu_pdata = {
	.reset_name = "mmu_cache",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};
#endif

#if defined(CONFIG_SOC_AM33XX) || defined(CONFIG_SOC_AM43XX)
static struct wkup_m3_platform_data wkup_m3_data = {
	.reset_name = "wkup_m3",
	.assert_reset = omap_device_assert_hardreset,
	.deassert_reset = omap_device_deassert_hardreset,
};
#endif

#ifdef CONFIG_SOC_OMAP5
static void __init omap5_uevm_legacy_init(void)
{
}
#endif

#ifdef CONFIG_SOC_DRA7XX
static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc1;
static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc2;
static struct omap_hsmmc_platform_data dra7_hsmmc_data_mmc3;

static void __init dra7x_evm_mmc_quirk(void)
{
	if (omap_rev() == DRA752_REV_ES1_1 || omap_rev() == DRA752_REV_ES1_0) {
		dra7_hsmmc_data_mmc1.version = "rev11";
		dra7_hsmmc_data_mmc1.max_freq = 96000000;

		dra7_hsmmc_data_mmc2.version = "rev11";
		dra7_hsmmc_data_mmc2.max_freq = 48000000;

		dra7_hsmmc_data_mmc3.version = "rev11";
		dra7_hsmmc_data_mmc3.max_freq = 48000000;
	}
}
#endif

static struct pcs_pdata pcs_pdata;

void omap_pcs_legacy_init(int irq, void (*rearm)(void))
{
	pcs_pdata.irq = irq;
	pcs_pdata.rearm = rearm;
}

/*
 * GPIOs for TWL are initialized by the I2C bus and need custom
 * handing until DSS has device tree bindings.
 */
void omap_auxdata_legacy_init(struct device *dev)
{
	if (dev->platform_data)
		return;

	if (strcmp("twl4030-gpio", dev_name(dev)))
		return;

	dev->platform_data = &twl_gpio_auxdata;
}

/* Dual mode timer PWM callbacks platdata */
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
static struct pwm_omap_dmtimer_pdata pwm_dmtimer_pdata = {
	.request_by_node = omap_dm_timer_request_by_node,
	.request_specific = omap_dm_timer_request_specific,
	.request = omap_dm_timer_request,
	.set_source = omap_dm_timer_set_source,
	.get_irq = omap_dm_timer_get_irq,
	.set_int_enable = omap_dm_timer_set_int_enable,
	.set_int_disable = omap_dm_timer_set_int_disable,
	.free = omap_dm_timer_free,
	.enable = omap_dm_timer_enable,
	.disable = omap_dm_timer_disable,
	.get_fclk = omap_dm_timer_get_fclk,
	.start = omap_dm_timer_start,
	.stop = omap_dm_timer_stop,
	.set_load = omap_dm_timer_set_load,
	.set_match = omap_dm_timer_set_match,
	.set_pwm = omap_dm_timer_set_pwm,
	.set_prescaler = omap_dm_timer_set_prescaler,
	.read_counter = omap_dm_timer_read_counter,
	.write_counter = omap_dm_timer_write_counter,
	.read_status = omap_dm_timer_read_status,
	.write_status = omap_dm_timer_write_status,
};
#endif

static struct ir_rx51_platform_data __maybe_unused rx51_ir_data = {
	.set_max_mpu_wakeup_lat = omap_pm_set_max_mpu_wakeup_lat,
};

static struct platform_device __maybe_unused rx51_ir_device = {
	.name           = "ir_rx51",
	.id             = -1,
	.dev            = {
		.platform_data = &rx51_ir_data,
	},
};

#if IS_ENABLED(CONFIG_SND_OMAP_SOC_MCBSP)
static struct omap_mcbsp_platform_data mcbsp_pdata;
static void __init omap3_mcbsp_init(void)
{
	omap3_mcbsp_init_pdata_callback(&mcbsp_pdata);
}
#else
static void __init omap3_mcbsp_init(void) {}
#endif

/*
 * Few boards still need auxdata populated before we populate
 * the dev entries in of_platform_populate().
 */
static struct pdata_init auxdata_quirks[] __initdata = {
#ifdef CONFIG_SOC_OMAP2420
	{ "nokia,n800", omap2420_n8x0_legacy_init, },
	{ "nokia,n810", omap2420_n8x0_legacy_init, },
	{ "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
#endif
#ifdef CONFIG_ARCH_OMAP3
	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_twl_init, },
#endif
	{ /* sentinel */ },
};

static struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
#ifdef CONFIG_MACH_NOKIA_N8X0
	OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
	OF_DEV_AUXDATA("menelaus", 0x72, "1-0072", &n8x0_menelaus_platform_data),
	OF_DEV_AUXDATA("tlv320aic3x", 0x18, "2-0018", &n810_aic33_data),
#endif
#ifdef CONFIG_ARCH_OMAP3
	OF_DEV_AUXDATA("ti,omap2-iommu", 0x5d000000, "5d000000.mmu",
		       &omap3_iommu_pdata),
	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x4809c000, "4809c000.mmc", &mmc_pdata[0]),
	OF_DEV_AUXDATA("ti,omap3-hsmmc", 0x480b4000, "480b4000.mmc", &mmc_pdata[1]),
	OF_DEV_AUXDATA("nokia,n900-ir", 0, "n900-ir", &rx51_ir_data),
	/* Only on am3517 */
	OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
	OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
		       &am35xx_emac_pdata),
	/* McBSP modules with sidetone core */
#if IS_ENABLED(CONFIG_SND_OMAP_SOC_MCBSP)
	OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49022000, "49022000.mcbsp", &mcbsp_pdata),
	OF_DEV_AUXDATA("ti,omap3-mcbsp", 0x49024000, "49024000.mcbsp", &mcbsp_pdata),
#endif
#endif
#ifdef CONFIG_SOC_AM33XX
	OF_DEV_AUXDATA("ti,am3352-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
		       &wkup_m3_data),
#endif
#ifdef CONFIG_SOC_AM43XX
	OF_DEV_AUXDATA("ti,am4372-wkup-m3", 0x44d00000, "44d00000.wkup_m3",
		       &wkup_m3_data),
#endif
#if IS_ENABLED(CONFIG_OMAP_DM_TIMER)
	OF_DEV_AUXDATA("ti,omap-dmtimer-pwm", 0, NULL, &pwm_dmtimer_pdata),
#endif
#if defined(CONFIG_ARCH_OMAP4) || defined(CONFIG_SOC_OMAP5)
	OF_DEV_AUXDATA("ti,omap4-iommu", 0x4a066000, "4a066000.mmu",
		       &omap4_iommu_pdata),
	OF_DEV_AUXDATA("ti,omap4-iommu", 0x55082000, "55082000.mmu",
		       &omap4_iommu_pdata),
#endif
#ifdef CONFIG_SOC_DRA7XX
	OF_DEV_AUXDATA("ti,dra7-hsmmc", 0x4809c000, "4809c000.mmc",
		       &dra7_hsmmc_data_mmc1),
	OF_DEV_AUXDATA("ti,dra7-hsmmc", 0x480b4000, "480b4000.mmc",
		       &dra7_hsmmc_data_mmc2),
	OF_DEV_AUXDATA("ti,dra7-hsmmc", 0x480ad000, "480ad000.mmc",
		       &dra7_hsmmc_data_mmc3),
#endif
	/* Common auxdata */
	OF_DEV_AUXDATA("pinctrl-single", 0, NULL, &pcs_pdata),
	{ /* sentinel */ },
};

/*
 * Few boards still need to initialize some legacy devices with
 * platform data until the drivers support device tree.
 */
static struct pdata_init pdata_quirks[] __initdata = {
#ifdef CONFIG_ARCH_OMAP3
	{ "compulab,omap3-sbc-t3517", omap3_sbc_t3517_legacy_init, },
	{ "compulab,omap3-sbc-t3530", omap3_sbc_t3530_legacy_init, },
	{ "compulab,omap3-sbc-t3730", omap3_sbc_t3730_legacy_init, },
	{ "nokia,omap3-n900", nokia_n900_legacy_init, },
	{ "nokia,omap3-n9", hsmmc2_internal_input_clk, },
	{ "nokia,omap3-n950", hsmmc2_internal_input_clk, },
	{ "isee,omap3-igep0020-rev-f", omap3_igep0020_rev_f_legacy_init, },
	{ "isee,omap3-igep0030-rev-g", omap3_igep0030_rev_g_legacy_init, },
	{ "logicpd,dm3730-torpedo-devkit", omap3_logicpd_torpedo_init, },
	{ "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
	{ "ti,am3517-evm", am3517_evm_legacy_init, },
	{ "technexion,omap3-tao3530", omap3_tao3530_legacy_init, },
	{ "openpandora,omap3-pandora-600mhz", omap3_pandora_legacy_init, },
	{ "openpandora,omap3-pandora-1ghz", omap3_pandora_legacy_init, },
#endif
#ifdef CONFIG_SOC_OMAP5
	{ "ti,omap5-uevm", omap5_uevm_legacy_init, },
#endif
#ifdef CONFIG_SOC_DRA7XX
	{ "ti,dra7-evm", dra7x_evm_mmc_quirk, },
#endif
	{ /* sentinel */ },
};

static void pdata_quirks_check(struct pdata_init *quirks)
{
	while (quirks->compatible) {
		if (of_machine_is_compatible(quirks->compatible)) {
			if (quirks->fn)
				quirks->fn();
		}
		quirks++;
	}
}

void __init pdata_quirks_init(const struct of_device_id *omap_dt_match_table)
{
	/*
	 * We still need this for omap2420 and omap3 PM to work, others are
	 * using drivers/misc/sram.c already.
	 */
	if (of_machine_is_compatible("ti,omap2420") ||
	    of_machine_is_compatible("ti,omap3"))
		omap_sdrc_init(NULL, NULL);

	if (of_machine_is_compatible("ti,omap3"))
		omap3_mcbsp_init();
	pdata_quirks_check(auxdata_quirks);
	of_platform_populate(NULL, omap_dt_match_table,
			     omap_auxdata_lookup, NULL);
	pdata_quirks_check(pdata_quirks);
}