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-rw-r--r--arch/arm/mach-omap2/board-n8x0.c523
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
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+++ b/arch/arm/mach-omap2/board-n8x0.c
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+// 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;
+}
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