Adding upstream version 6.6.15.upstream/6.6.15

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 523 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-n8x0.c b/arch/arm/mach-omap2/board-n8x0.c
new file mode 100644
index 0000000000..8e3b5068d4
--- /dev/null
+++ b/arch/arm/mach-omap2/board-n8x0.c
@@ -0,0 +1,523 @@
+// SPDX-License-Identifier: GPL-2.0-only
+/*
+ * linux/arch/arm/mach-omap2/board-n8x0.c
+ *
+ * Copyright (C) 2005-2009 Nokia Corporation
+ * Author: Juha Yrjola <juha.yrjola@nokia.com>
+ *
+ * Modified from mach-omap2/board-generic.c
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio/machine.h>
+#include <linux/gpio/consumer.h>
+#include <linux/init.h>
+#include <linux/io.h>
+#include <linux/irq.h>
+#include <linux/stddef.h>
+#include <linux/i2c.h>
+#include <linux/spi/spi.h>
+#include <linux/usb/musb.h>
+#include <linux/mmc/host.h>
+#include <linux/platform_data/spi-omap2-mcspi.h>
+#include <linux/platform_data/mmc-omap.h>
+#include <linux/mfd/menelaus.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach-types.h>
+
+#include "common.h"
+#include "mmc.h"
+#include "usb-tusb6010.h"
+#include "soc.h"
+#include "common-board-devices.h"
+
+#define TUSB6010_ASYNC_CS	1
+#define TUSB6010_SYNC_CS	4
+#define TUSB6010_DMACHAN	0x3f
+
+#define NOKIA_N810_WIMAX	(1 << 2)
+#define NOKIA_N810		(1 << 1)
+#define NOKIA_N800		(1 << 0)
+
+static u32 board_caps;
+
+#define board_is_n800()		(board_caps & NOKIA_N800)
+#define board_is_n810()		(board_caps & NOKIA_N810)
+#define board_is_n810_wimax()	(board_caps & NOKIA_N810_WIMAX)
+
+static void board_check_revision(void)
+{
+	if (of_machine_is_compatible("nokia,n800"))
+		board_caps = NOKIA_N800;
+	else if (of_machine_is_compatible("nokia,n810"))
+		board_caps = NOKIA_N810;
+	else if (of_machine_is_compatible("nokia,n810-wimax"))
+		board_caps = NOKIA_N810_WIMAX;
+
+	if (!board_caps)
+		pr_err("Unknown board\n");
+}
+
+#if IS_ENABLED(CONFIG_USB_MUSB_TUSB6010)
+
+static struct musb_hdrc_config musb_config = {
+	.multipoint	= 1,
+	.dyn_fifo	= 1,
+	.num_eps	= 16,
+	.ram_bits	= 12,
+};
+
+static struct musb_hdrc_platform_data tusb_data = {
+	.mode		= MUSB_OTG,
+	.min_power	= 25,	/* x2 = 50 mA drawn from VBUS as peripheral */
+	.power		= 100,	/* Max 100 mA VBUS for host mode */
+	.config		= &musb_config,
+};
+
+static struct gpiod_lookup_table tusb_gpio_table = {
+	.dev_id = "musb-tusb",
+	.table = {
+		GPIO_LOOKUP("gpio-0-15", 0, "enable",
+			    GPIO_ACTIVE_HIGH),
+		GPIO_LOOKUP("gpio-48-63", 10, "int",
+			    GPIO_ACTIVE_HIGH),
+		{ }
+	},
+};
+
+static void __init n8x0_usb_init(void)
+{
+	int ret = 0;
+
+	gpiod_add_lookup_table(&tusb_gpio_table);
+	ret = tusb6010_setup_interface(&tusb_data, TUSB6010_REFCLK_19, 2,
+				       TUSB6010_ASYNC_CS, TUSB6010_SYNC_CS,
+				       TUSB6010_DMACHAN);
+	if (ret != 0)
+		return;
+
+	pr_info("TUSB 6010\n");
+
+	return;
+}
+#else
+
+static void __init n8x0_usb_init(void) {}
+
+#endif /*CONFIG_USB_MUSB_TUSB6010 */
+
+
+static struct omap2_mcspi_device_config p54spi_mcspi_config = {
+	.turbo_mode	= 0,
+};
+
+static struct spi_board_info n800_spi_board_info[] __initdata = {
+	{
+		.modalias	= "p54spi",
+		.bus_num	= 2,
+		.chip_select	= 0,
+		.max_speed_hz   = 48000000,
+		.controller_data = &p54spi_mcspi_config,
+	},
+};
+
+#if defined(CONFIG_MENELAUS) && IS_ENABLED(CONFIG_MMC_OMAP)
+
+/*
+ * On both N800 and N810, only the first of the two MMC controllers is in use.
+ * The two MMC slots are multiplexed via Menelaus companion chip over I2C.
+ * On N800, both slots are powered via Menelaus. On N810, only one of the
+ * slots is powered via Menelaus. The N810 EMMC is powered via GPIO.
+ *
+ * VMMC				slot 1 on both N800 and N810
+ * VDCDC3_APE and VMCS2_APE	slot 2 on N800
+ * GPIO23 and GPIO9		slot 2 EMMC on N810
+ *
+ */
+static int slot1_cover_open;
+static int slot2_cover_open;
+static struct device *mmc_device;
+
+static struct gpiod_lookup_table nokia8xx_mmc_gpio_table = {
+	.dev_id = "mmci-omap.0",
+	.table = {
+		/* Slot switch, GPIO 96 */
+		GPIO_LOOKUP("gpio-80-111", 16,
+			    "switch", GPIO_ACTIVE_HIGH),
+		{ }
+	},
+};
+
+static struct gpiod_lookup_table nokia810_mmc_gpio_table = {
+	.dev_id = "mmci-omap.0",
+	.table = {
+		/* Slot index 1, VSD power, GPIO 23 */
+		GPIO_LOOKUP_IDX("gpio-16-31", 7,
+				"vsd", 1, GPIO_ACTIVE_HIGH),
+		/* Slot index 1, VIO power, GPIO 9 */
+		GPIO_LOOKUP_IDX("gpio-0-15", 9,
+				"vio", 1, GPIO_ACTIVE_HIGH),
+		{ }
+	},
+};
+
+static int n8x0_mmc_set_power_menelaus(struct device *dev, int slot,
+					int power_on, int vdd)
+{
+	int mV;
+
+#ifdef CONFIG_MMC_DEBUG
+	dev_dbg(dev, "Set slot %d power: %s (vdd %d)\n", slot + 1,
+		power_on ? "on" : "off", vdd);
+#endif
+	if (slot == 0) {
+		if (!power_on)
+			return menelaus_set_vmmc(0);
+		switch (1 << vdd) {
+		case MMC_VDD_33_34:
+		case MMC_VDD_32_33:
+		case MMC_VDD_31_32:
+			mV = 3100;
+			break;
+		case MMC_VDD_30_31:
+			mV = 3000;
+			break;
+		case MMC_VDD_28_29:
+			mV = 2800;
+			break;
+		case MMC_VDD_165_195:
+			mV = 1850;
+			break;
+		default:
+			BUG();
+		}
+		return menelaus_set_vmmc(mV);
+	} else {
+		if (!power_on)
+			return menelaus_set_vdcdc(3, 0);
+		switch (1 << vdd) {
+		case MMC_VDD_33_34:
+		case MMC_VDD_32_33:
+			mV = 3300;
+			break;
+		case MMC_VDD_30_31:
+		case MMC_VDD_29_30:
+			mV = 3000;
+			break;
+		case MMC_VDD_28_29:
+		case MMC_VDD_27_28:
+			mV = 2800;
+			break;
+		case MMC_VDD_24_25:
+		case MMC_VDD_23_24:
+			mV = 2400;
+			break;
+		case MMC_VDD_22_23:
+		case MMC_VDD_21_22:
+			mV = 2200;
+			break;
+		case MMC_VDD_20_21:
+			mV = 2000;
+			break;
+		case MMC_VDD_165_195:
+			mV = 1800;
+			break;
+		default:
+			BUG();
+		}
+		return menelaus_set_vdcdc(3, mV);
+	}
+	return 0;
+}
+
+static int n8x0_mmc_set_power(struct device *dev, int slot, int power_on,
+			      int vdd)
+{
+	if (board_is_n800() || slot == 0)
+		return n8x0_mmc_set_power_menelaus(dev, slot, power_on, vdd);
+
+	/* The n810 power will be handled by GPIO code in the driver */
+
+	return 0;
+}
+
+static int n8x0_mmc_set_bus_mode(struct device *dev, int slot, int bus_mode)
+{
+	int r;
+
+	dev_dbg(dev, "Set slot %d bus mode %s\n", slot + 1,
+		bus_mode == MMC_BUSMODE_OPENDRAIN ? "open-drain" : "push-pull");
+	BUG_ON(slot != 0 && slot != 1);
+	slot++;
+	switch (bus_mode) {
+	case MMC_BUSMODE_OPENDRAIN:
+		r = menelaus_set_mmc_opendrain(slot, 1);
+		break;
+	case MMC_BUSMODE_PUSHPULL:
+		r = menelaus_set_mmc_opendrain(slot, 0);
+		break;
+	default:
+		BUG();
+	}
+	if (r != 0 && printk_ratelimit())
+		dev_err(dev, "MMC: unable to set bus mode for slot %d\n",
+			slot);
+	return r;
+}
+
+static int n8x0_mmc_get_cover_state(struct device *dev, int slot)
+{
+	slot++;
+	BUG_ON(slot != 1 && slot != 2);
+	if (slot == 1)
+		return slot1_cover_open;
+	else
+		return slot2_cover_open;
+}
+
+static void n8x0_mmc_callback(void *data, u8 card_mask)
+{
+#ifdef CONFIG_MMC_OMAP
+	int bit, *openp, index;
+
+	if (board_is_n800()) {
+		bit = 1 << 1;
+		openp = &slot2_cover_open;
+		index = 1;
+	} else {
+		bit = 1;
+		openp = &slot1_cover_open;
+		index = 0;
+	}
+
+	if (card_mask & bit)
+		*openp = 1;
+	else
+		*openp = 0;
+
+	omap_mmc_notify_cover_event(mmc_device, index, *openp);
+#else
+	pr_warn("MMC: notify cover event not available\n");
+#endif
+}
+
+static int n8x0_mmc_late_init(struct device *dev)
+{
+	int r, bit, *openp;
+	int vs2sel;
+
+	mmc_device = dev;
+
+	r = menelaus_set_slot_sel(1);
+	if (r < 0)
+		return r;
+
+	if (board_is_n800())
+		vs2sel = 0;
+	else
+		vs2sel = 2;
+
+	r = menelaus_set_mmc_slot(2, 0, vs2sel, 1);
+	if (r < 0)
+		return r;
+
+	n8x0_mmc_set_power(dev, 0, MMC_POWER_ON, 16); /* MMC_VDD_28_29 */
+	n8x0_mmc_set_power(dev, 1, MMC_POWER_ON, 16);
+
+	r = menelaus_set_mmc_slot(1, 1, 0, 1);
+	if (r < 0)
+		return r;
+	r = menelaus_set_mmc_slot(2, 1, vs2sel, 1);
+	if (r < 0)
+		return r;
+
+	r = menelaus_get_slot_pin_states();
+	if (r < 0)
+		return r;
+
+	if (board_is_n800()) {
+		bit = 1 << 1;
+		openp = &slot2_cover_open;
+	} else {
+		bit = 1;
+		openp = &slot1_cover_open;
+		slot2_cover_open = 0;
+	}
+
+	/* All slot pin bits seem to be inversed until first switch change */
+	if (r == 0xf || r == (0xf & ~bit))
+		r = ~r;
+
+	if (r & bit)
+		*openp = 1;
+	else
+		*openp = 0;
+
+	r = menelaus_register_mmc_callback(n8x0_mmc_callback, NULL);
+
+	return r;
+}
+
+static void n8x0_mmc_shutdown(struct device *dev)
+{
+	int vs2sel;
+
+	if (board_is_n800())
+		vs2sel = 0;
+	else
+		vs2sel = 2;
+
+	menelaus_set_mmc_slot(1, 0, 0, 0);
+	menelaus_set_mmc_slot(2, 0, vs2sel, 0);
+}
+
+static void n8x0_mmc_cleanup(struct device *dev)
+{
+	menelaus_unregister_mmc_callback();
+}
+
+/*
+ * MMC controller1 has two slots that are multiplexed via I2C.
+ * MMC controller2 is not in use.
+ */
+static struct omap_mmc_platform_data mmc1_data = {
+	.nr_slots			= 0,
+	.init				= n8x0_mmc_late_init,
+	.cleanup			= n8x0_mmc_cleanup,
+	.shutdown			= n8x0_mmc_shutdown,
+	.max_freq			= 24000000,
+	.slots[0] = {
+		.wires			= 4,
+		.set_power		= n8x0_mmc_set_power,
+		.set_bus_mode		= n8x0_mmc_set_bus_mode,
+		.get_cover_state	= n8x0_mmc_get_cover_state,
+		.ocr_mask		= MMC_VDD_165_195 | MMC_VDD_30_31 |
+						MMC_VDD_32_33   | MMC_VDD_33_34,
+		.name			= "internal",
+	},
+	.slots[1] = {
+		.set_power		= n8x0_mmc_set_power,
+		.set_bus_mode		= n8x0_mmc_set_bus_mode,
+		.get_cover_state	= n8x0_mmc_get_cover_state,
+		.ocr_mask		= MMC_VDD_165_195 | MMC_VDD_20_21 |
+						MMC_VDD_21_22 | MMC_VDD_22_23 |
+						MMC_VDD_23_24 | MMC_VDD_24_25 |
+						MMC_VDD_27_28 | MMC_VDD_28_29 |
+						MMC_VDD_29_30 | MMC_VDD_30_31 |
+						MMC_VDD_32_33 | MMC_VDD_33_34,
+		.name			= "external",
+	},
+};
+
+static struct omap_mmc_platform_data *mmc_data[OMAP24XX_NR_MMC];
+
+static void __init n8x0_mmc_init(void)
+{
+	gpiod_add_lookup_table(&nokia8xx_mmc_gpio_table);
+
+	if (board_is_n810()) {
+		mmc1_data.slots[0].name = "external";
+
+		/*
+		 * Some Samsung Movinand chips do not like open-ended
+		 * multi-block reads and fall to braind-dead state
+		 * while doing so. Reducing the number of blocks in
+		 * the transfer or delays in clock disable do not help
+		 */
+		mmc1_data.slots[1].name = "internal";
+		mmc1_data.slots[1].ban_openended = 1;
+		gpiod_add_lookup_table(&nokia810_mmc_gpio_table);
+	}
+
+	mmc1_data.nr_slots = 2;
+	mmc_data[0] = &mmc1_data;
+}
+#else
+static struct omap_mmc_platform_data mmc1_data;
+static void __init n8x0_mmc_init(void)
+{
+}
+#endif	/* CONFIG_MMC_OMAP */
+
+#ifdef CONFIG_MENELAUS
+
+static int n8x0_auto_sleep_regulators(void)
+{
+	u32 val;
+	int ret;
+
+	val = EN_VPLL_SLEEP | EN_VMMC_SLEEP    \
+		| EN_VAUX_SLEEP | EN_VIO_SLEEP \
+		| EN_VMEM_SLEEP | EN_DC3_SLEEP \
+		| EN_VC_SLEEP | EN_DC2_SLEEP;
+
+	ret = menelaus_set_regulator_sleep(1, val);
+	if (ret < 0) {
+		pr_err("Could not set regulators to sleep on menelaus: %u\n",
+		       ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int n8x0_auto_voltage_scale(void)
+{
+	int ret;
+
+	ret = menelaus_set_vcore_hw(1400, 1050);
+	if (ret < 0) {
+		pr_err("Could not set VCORE voltage on menelaus: %u\n", ret);
+		return ret;
+	}
+	return 0;
+}
+
+static int n8x0_menelaus_late_init(struct device *dev)
+{
+	int ret;
+
+	ret = n8x0_auto_voltage_scale();
+	if (ret < 0)
+		return ret;
+	ret = n8x0_auto_sleep_regulators();
+	if (ret < 0)
+		return ret;
+	return 0;
+}
+
+#else
+static int n8x0_menelaus_late_init(struct device *dev)
+{
+	return 0;
+}
+#endif
+
+struct menelaus_platform_data n8x0_menelaus_platform_data = {
+	.late_init = n8x0_menelaus_late_init,
+};
+
+static int __init n8x0_late_initcall(void)
+{
+	if (!board_caps)
+		return -ENODEV;
+
+	n8x0_mmc_init();
+	n8x0_usb_init();
+
+	return 0;
+}
+omap_late_initcall(n8x0_late_initcall);
+
+/*
+ * Legacy init pdata init for n8x0. Note that we want to follow the
+ * I2C bus numbering starting at 0 for device tree like other omaps.
+ */
+void * __init n8x0_legacy_init(void)
+{
+	board_check_revision();
+	spi_register_board_info(n800_spi_board_info,
+				ARRAY_SIZE(n800_spi_board_info));
+	return &mmc1_data;
+}