To compile this driver as a module, choose M here: the module
will be called da9063_onkey.
-config INPUT_DM355EVM
- tristate "TI DaVinci DM355 EVM Keypad and IR Remote"
- depends on MFD_DM355EVM_MSP
- select INPUT_SPARSEKMAP
- help
- Supports the pushbuttons and IR remote used with
- the DM355 EVM board.
-
- To compile this driver as a module, choose M here: the
- module will be called dm355evm_keys.
-
config INPUT_WM831X_ON
tristate "WM831X ON pin"
depends on MFD_WM831X
obj-$(CONFIG_INPUT_DA9052_ONKEY) += da9052_onkey.o
obj-$(CONFIG_INPUT_DA9055_ONKEY) += da9055_onkey.o
obj-$(CONFIG_INPUT_DA9063_ONKEY) += da9063_onkey.o
-obj-$(CONFIG_INPUT_DM355EVM) += dm355evm_keys.o
obj-$(CONFIG_INPUT_E3X0_BUTTON) += e3x0-button.o
obj-$(CONFIG_INPUT_DRV260X_HAPTICS) += drv260x.o
obj-$(CONFIG_INPUT_DRV2665_HAPTICS) += drv2665.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * dm355evm_keys.c - support buttons and IR remote on DM355 EVM board
- *
- * Copyright (c) 2008 by David Brownell
- */
-#include <linux/kernel.h>
-#include <linux/slab.h>
-#include <linux/input.h>
-#include <linux/input/sparse-keymap.h>
-#include <linux/platform_device.h>
-#include <linux/interrupt.h>
-
-#include <linux/mfd/dm355evm_msp.h>
-#include <linux/module.h>
-
-
-/*
- * The MSP430 firmware on the DM355 EVM monitors on-board pushbuttons
- * and an IR receptor used for the remote control. When any key is
- * pressed, or its autorepeat kicks in, an event is sent. This driver
- * read those events from the small (32 event) queue and reports them.
- *
- * Note that physically there can only be one of these devices.
- *
- * This driver was tested with firmware revision A4.
- */
-struct dm355evm_keys {
- struct input_dev *input;
- struct device *dev;
-};
-
-/* These initial keycodes can be remapped */
-static const struct key_entry dm355evm_keys[] = {
- /*
- * Pushbuttons on the EVM board ... note that the labels for these
- * are SW10/SW11/etc on the PC board. The left/right orientation
- * comes only from the firmware's documentation, and presumes the
- * power connector is immediately in front of you and the IR sensor
- * is to the right. (That is, rotate the board counter-clockwise
- * by 90 degrees from the SW10/etc and "DM355 EVM" labels.)
- */
- { KE_KEY, 0x00d8, { KEY_OK } }, /* SW12 */
- { KE_KEY, 0x00b8, { KEY_UP } }, /* SW13 */
- { KE_KEY, 0x00e8, { KEY_DOWN } }, /* SW11 */
- { KE_KEY, 0x0078, { KEY_LEFT } }, /* SW14 */
- { KE_KEY, 0x00f0, { KEY_RIGHT } }, /* SW10 */
-
- /*
- * IR buttons ... codes assigned to match the universal remote
- * provided with the EVM (Philips PM4S) using DVD code 0020.
- *
- * These event codes match firmware documentation, but other
- * remote controls could easily send more RC5-encoded events.
- * The PM4S manual was used in several cases to help select
- * a keycode reflecting the intended usage.
- *
- * RC5 codes are 14 bits, with two start bits (0x3 prefix)
- * and a toggle bit (masked out below).
- */
- { KE_KEY, 0x300c, { KEY_POWER } }, /* NOTE: docs omit this */
- { KE_KEY, 0x3000, { KEY_NUMERIC_0 } },
- { KE_KEY, 0x3001, { KEY_NUMERIC_1 } },
- { KE_KEY, 0x3002, { KEY_NUMERIC_2 } },
- { KE_KEY, 0x3003, { KEY_NUMERIC_3 } },
- { KE_KEY, 0x3004, { KEY_NUMERIC_4 } },
- { KE_KEY, 0x3005, { KEY_NUMERIC_5 } },
- { KE_KEY, 0x3006, { KEY_NUMERIC_6 } },
- { KE_KEY, 0x3007, { KEY_NUMERIC_7 } },
- { KE_KEY, 0x3008, { KEY_NUMERIC_8 } },
- { KE_KEY, 0x3009, { KEY_NUMERIC_9 } },
- { KE_KEY, 0x3022, { KEY_ENTER } },
- { KE_KEY, 0x30ec, { KEY_MODE } }, /* "tv/vcr/..." */
- { KE_KEY, 0x300f, { KEY_SELECT } }, /* "info" */
- { KE_KEY, 0x3020, { KEY_CHANNELUP } }, /* "up" */
- { KE_KEY, 0x302e, { KEY_MENU } }, /* "in/out" */
- { KE_KEY, 0x3011, { KEY_VOLUMEDOWN } }, /* "left" */
- { KE_KEY, 0x300d, { KEY_MUTE } }, /* "ok" */
- { KE_KEY, 0x3010, { KEY_VOLUMEUP } }, /* "right" */
- { KE_KEY, 0x301e, { KEY_SUBTITLE } }, /* "cc" */
- { KE_KEY, 0x3021, { KEY_CHANNELDOWN } },/* "down" */
- { KE_KEY, 0x3022, { KEY_PREVIOUS } },
- { KE_KEY, 0x3026, { KEY_SLEEP } },
- { KE_KEY, 0x3172, { KEY_REWIND } }, /* NOTE: docs wrongly say 0x30ca */
- { KE_KEY, 0x3175, { KEY_PLAY } },
- { KE_KEY, 0x3174, { KEY_FASTFORWARD } },
- { KE_KEY, 0x3177, { KEY_RECORD } },
- { KE_KEY, 0x3176, { KEY_STOP } },
- { KE_KEY, 0x3169, { KEY_PAUSE } },
-};
-
-/*
- * Because we communicate with the MSP430 using I2C, and all I2C calls
- * in Linux sleep, we use a threaded IRQ handler. The IRQ itself is
- * active low, but we go through the GPIO controller so we can trigger
- * on falling edges and not worry about enabling/disabling the IRQ in
- * the keypress handling path.
- */
-static irqreturn_t dm355evm_keys_irq(int irq, void *_keys)
-{
- static u16 last_event;
- struct dm355evm_keys *keys = _keys;
- const struct key_entry *ke;
- unsigned int keycode;
- int status;
- u16 event;
-
- /* For simplicity we ignore INPUT_COUNT and just read
- * events until we get the "queue empty" indicator.
- * Reading INPUT_LOW decrements the count.
- */
- for (;;) {
- status = dm355evm_msp_read(DM355EVM_MSP_INPUT_HIGH);
- if (status < 0) {
- dev_dbg(keys->dev, "input high err %d\n",
- status);
- break;
- }
- event = status << 8;
-
- status = dm355evm_msp_read(DM355EVM_MSP_INPUT_LOW);
- if (status < 0) {
- dev_dbg(keys->dev, "input low err %d\n",
- status);
- break;
- }
- event |= status;
- if (event == 0xdead)
- break;
-
- /* Press and release a button: two events, same code.
- * Press and hold (autorepeat), then release: N events
- * (N > 2), same code. For RC5 buttons the toggle bits
- * distinguish (for example) "1-autorepeat" from "1 1";
- * but PCB buttons don't support that bit.
- *
- * So we must synthesize release events. We do that by
- * mapping events to a press/release event pair; then
- * to avoid adding extra events, skip the second event
- * of each pair.
- */
- if (event == last_event) {
- last_event = 0;
- continue;
- }
- last_event = event;
-
- /* ignore the RC5 toggle bit */
- event &= ~0x0800;
-
- /* find the key, or report it as unknown */
- ke = sparse_keymap_entry_from_scancode(keys->input, event);
- keycode = ke ? ke->keycode : KEY_UNKNOWN;
- dev_dbg(keys->dev,
- "input event 0x%04x--> keycode %d\n",
- event, keycode);
-
- /* report press + release */
- input_report_key(keys->input, keycode, 1);
- input_sync(keys->input);
- input_report_key(keys->input, keycode, 0);
- input_sync(keys->input);
- }
-
- return IRQ_HANDLED;
-}
-
-/*----------------------------------------------------------------------*/
-
-static int dm355evm_keys_probe(struct platform_device *pdev)
-{
- struct dm355evm_keys *keys;
- struct input_dev *input;
- int irq;
- int error;
-
- keys = devm_kzalloc(&pdev->dev, sizeof (*keys), GFP_KERNEL);
- if (!keys)
- return -ENOMEM;
-
- input = devm_input_allocate_device(&pdev->dev);
- if (!input)
- return -ENOMEM;
-
- keys->dev = &pdev->dev;
- keys->input = input;
-
- input->name = "DM355 EVM Controls";
- input->phys = "dm355evm/input0";
-
- input->id.bustype = BUS_I2C;
- input->id.product = 0x0355;
- input->id.version = dm355evm_msp_read(DM355EVM_MSP_FIRMREV);
-
- error = sparse_keymap_setup(input, dm355evm_keys, NULL);
- if (error)
- return error;
-
- /* REVISIT: flush the event queue? */
-
- /* set up "threaded IRQ handler" */
- irq = platform_get_irq(pdev, 0);
- if (irq < 0)
- return irq;
-
- error = devm_request_threaded_irq(&pdev->dev, irq,
- NULL, dm355evm_keys_irq,
- IRQF_TRIGGER_FALLING | IRQF_ONESHOT,
- dev_name(&pdev->dev), keys);
- if (error)
- return error;
-
- /* register */
- error = input_register_device(input);
- if (error)
- return error;
-
- return 0;
-}
-
-/* REVISIT: add suspend/resume when DaVinci supports it. The IRQ should
- * be able to wake up the system. When device_may_wakeup(&pdev->dev), call
- * enable_irq_wake() on suspend, and disable_irq_wake() on resume.
- */
-
-/*
- * I2C is used to talk to the MSP430, but this platform device is
- * exposed by an MFD driver that manages I2C communications.
- */
-static struct platform_driver dm355evm_keys_driver = {
- .probe = dm355evm_keys_probe,
- .driver = {
- .name = "dm355evm_keys",
- },
-};
-module_platform_driver(dm355evm_keys_driver);
-
-MODULE_LICENSE("GPL");
To compile this driver as a module, choose M here: the
module will be called ti_am335x_tscadc.
-config MFD_DM355EVM_MSP
- bool "TI DaVinci DM355 EVM microcontroller"
- depends on I2C=y && MACH_DAVINCI_DM355_EVM
- help
- This driver supports the MSP430 microcontroller used on these
- boards. MSP430 firmware manages resets and power sequencing,
- inputs from buttons and the IR remote, LEDs, an RTC, and more.
-
config MFD_LP3943
tristate "TI/National Semiconductor LP3943 MFD Driver"
depends on I2C
obj-$(CONFIG_MFD_TI_LP87565) += lp87565.o
obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
-obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
obj-$(CONFIG_MFD_TI_AM335X_TSCADC) += ti_am335x_tscadc.o
obj-$(CONFIG_MFD_STA2X11) += sta2x11-mfd.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- * dm355evm_msp.c - driver for MSP430 firmware on DM355EVM board
- *
- * Copyright (C) 2008 David Brownell
- */
-
-#include <linux/init.h>
-#include <linux/mutex.h>
-#include <linux/platform_device.h>
-#include <linux/clk.h>
-#include <linux/module.h>
-#include <linux/err.h>
-#include <linux/gpio.h>
-#include <linux/gpio/machine.h>
-#include <linux/leds.h>
-#include <linux/i2c.h>
-#include <linux/mfd/dm355evm_msp.h>
-
-
-/*
- * The DM355 is a DaVinci chip with video support but no C64+ DSP. Its
- * EVM board has an MSP430 programmed with firmware for various board
- * support functions. This driver exposes some of them directly, and
- * supports other drivers (e.g. RTC, input) for more complex access.
- *
- * Because this firmware is entirely board-specific, this file embeds
- * knowledge that would be passed as platform_data in a generic driver.
- *
- * This driver was tested with firmware revision A4.
- */
-
-#if IS_ENABLED(CONFIG_INPUT_DM355EVM)
-#define msp_has_keyboard() true
-#else
-#define msp_has_keyboard() false
-#endif
-
-#if IS_ENABLED(CONFIG_LEDS_GPIO)
-#define msp_has_leds() true
-#else
-#define msp_has_leds() false
-#endif
-
-#if IS_ENABLED(CONFIG_RTC_DRV_DM355EVM)
-#define msp_has_rtc() true
-#else
-#define msp_has_rtc() false
-#endif
-
-#if IS_ENABLED(CONFIG_VIDEO_TVP514X)
-#define msp_has_tvp() true
-#else
-#define msp_has_tvp() false
-#endif
-
-
-/*----------------------------------------------------------------------*/
-
-/* REVISIT for paranoia's sake, retry reads/writes on error */
-
-static struct i2c_client *msp430;
-
-/**
- * dm355evm_msp_write - Writes a register in dm355evm_msp
- * @value: the value to be written
- * @reg: register address
- *
- * Returns result of operation - 0 is success, else negative errno
- */
-int dm355evm_msp_write(u8 value, u8 reg)
-{
- return i2c_smbus_write_byte_data(msp430, reg, value);
-}
-EXPORT_SYMBOL(dm355evm_msp_write);
-
-/**
- * dm355evm_msp_read - Reads a register from dm355evm_msp
- * @reg: register address
- *
- * Returns result of operation - value, or negative errno
- */
-int dm355evm_msp_read(u8 reg)
-{
- return i2c_smbus_read_byte_data(msp430, reg);
-}
-EXPORT_SYMBOL(dm355evm_msp_read);
-
-/*----------------------------------------------------------------------*/
-
-/*
- * Many of the msp430 pins are just used as fixed-direction GPIOs.
- * We could export a few more of them this way, if we wanted.
- */
-#define MSP_GPIO(bit, reg) ((DM355EVM_MSP_ ## reg) << 3 | (bit))
-
-static const u8 msp_gpios[] = {
- /* eight leds */
- MSP_GPIO(0, LED), MSP_GPIO(1, LED),
- MSP_GPIO(2, LED), MSP_GPIO(3, LED),
- MSP_GPIO(4, LED), MSP_GPIO(5, LED),
- MSP_GPIO(6, LED), MSP_GPIO(7, LED),
- /* SW6 and the NTSC/nPAL jumper */
- MSP_GPIO(0, SWITCH1), MSP_GPIO(1, SWITCH1),
- MSP_GPIO(2, SWITCH1), MSP_GPIO(3, SWITCH1),
- MSP_GPIO(4, SWITCH1),
- /* switches on MMC/SD sockets */
- /*
- * Note: EVMDM355_ECP_VA4.pdf suggests that Bit 2 and 4 should be
- * checked for card detection. However on the EVM bit 1 and 3 gives
- * this status, for 0 and 1 instance respectively. The pdf also
- * suggests that Bit 1 and 3 should be checked for write protection.
- * However on the EVM bit 2 and 4 gives this status,for 0 and 1
- * instance respectively.
- */
- MSP_GPIO(2, SDMMC), MSP_GPIO(1, SDMMC), /* mmc0 WP, nCD */
- MSP_GPIO(4, SDMMC), MSP_GPIO(3, SDMMC), /* mmc1 WP, nCD */
-};
-
-static struct gpio_led evm_leds[] = {
- { .name = "dm355evm::ds14",
- .default_trigger = "heartbeat", },
- { .name = "dm355evm::ds15",
- .default_trigger = "mmc0", },
- { .name = "dm355evm::ds16",
- /* could also be a CE-ATA drive */
- .default_trigger = "mmc1", },
- { .name = "dm355evm::ds17",
- .default_trigger = "nand-disk", },
- { .name = "dm355evm::ds18", },
- { .name = "dm355evm::ds19", },
- { .name = "dm355evm::ds20", },
- { .name = "dm355evm::ds21", },
-};
-
-static struct gpio_led_platform_data evm_led_data = {
- .num_leds = ARRAY_SIZE(evm_leds),
- .leds = evm_leds,
-};
-
-static struct gpiod_lookup_table evm_leds_gpio_table = {
- .dev_id = "leds-gpio",
- .table = {
- /*
- * These GPIOs are on the dm355evm_msp
- * GPIO chip at index 0..7
- */
- GPIO_LOOKUP_IDX("dm355evm_msp", 0, NULL,
- 0, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 1, NULL,
- 1, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 2, NULL,
- 2, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 3, NULL,
- 3, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 4, NULL,
- 4, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 5, NULL,
- 5, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 6, NULL,
- 6, GPIO_ACTIVE_LOW),
- GPIO_LOOKUP_IDX("dm355evm_msp", 7, NULL,
- 7, GPIO_ACTIVE_LOW),
- { },
- },
-};
-
-#define MSP_GPIO_REG(offset) (msp_gpios[(offset)] >> 3)
-#define MSP_GPIO_MASK(offset) BIT(msp_gpios[(offset)] & 0x07)
-
-static int msp_gpio_in(struct gpio_chip *chip, unsigned offset)
-{
- switch (MSP_GPIO_REG(offset)) {
- case DM355EVM_MSP_SWITCH1:
- case DM355EVM_MSP_SWITCH2:
- case DM355EVM_MSP_SDMMC:
- return 0;
- default:
- return -EINVAL;
- }
-}
-
-static u8 msp_led_cache;
-
-static int msp_gpio_get(struct gpio_chip *chip, unsigned offset)
-{
- int reg, status;
-
- reg = MSP_GPIO_REG(offset);
- status = dm355evm_msp_read(reg);
- if (status < 0)
- return status;
- if (reg == DM355EVM_MSP_LED)
- msp_led_cache = status;
- return !!(status & MSP_GPIO_MASK(offset));
-}
-
-static int msp_gpio_out(struct gpio_chip *chip, unsigned offset, int value)
-{
- int mask, bits;
-
- /* NOTE: there are some other signals that could be
- * packaged as output GPIOs, but they aren't as useful
- * as the LEDs ... so for now we don't.
- */
- if (MSP_GPIO_REG(offset) != DM355EVM_MSP_LED)
- return -EINVAL;
-
- mask = MSP_GPIO_MASK(offset);
- bits = msp_led_cache;
-
- bits &= ~mask;
- if (value)
- bits |= mask;
- msp_led_cache = bits;
-
- return dm355evm_msp_write(bits, DM355EVM_MSP_LED);
-}
-
-static void msp_gpio_set(struct gpio_chip *chip, unsigned offset, int value)
-{
- msp_gpio_out(chip, offset, value);
-}
-
-static struct gpio_chip dm355evm_msp_gpio = {
- .label = "dm355evm_msp",
- .owner = THIS_MODULE,
- .direction_input = msp_gpio_in,
- .get = msp_gpio_get,
- .direction_output = msp_gpio_out,
- .set = msp_gpio_set,
- .base = -EINVAL, /* dynamic assignment */
- .ngpio = ARRAY_SIZE(msp_gpios),
- .can_sleep = true,
-};
-
-/*----------------------------------------------------------------------*/
-
-static struct device *add_child(struct i2c_client *client, const char *name,
- void *pdata, unsigned pdata_len,
- bool can_wakeup, int irq)
-{
- struct platform_device *pdev;
- int status;
-
- pdev = platform_device_alloc(name, -1);
- if (!pdev)
- return ERR_PTR(-ENOMEM);
-
- device_init_wakeup(&pdev->dev, can_wakeup);
- pdev->dev.parent = &client->dev;
-
- if (pdata) {
- status = platform_device_add_data(pdev, pdata, pdata_len);
- if (status < 0) {
- dev_dbg(&pdev->dev, "can't add platform_data\n");
- goto put_device;
- }
- }
-
- if (irq) {
- struct resource r = {
- .start = irq,
- .flags = IORESOURCE_IRQ,
- };
-
- status = platform_device_add_resources(pdev, &r, 1);
- if (status < 0) {
- dev_dbg(&pdev->dev, "can't add irq\n");
- goto put_device;
- }
- }
-
- status = platform_device_add(pdev);
- if (status)
- goto put_device;
-
- return &pdev->dev;
-
-put_device:
- platform_device_put(pdev);
- dev_err(&client->dev, "failed to add device %s\n", name);
- return ERR_PTR(status);
-}
-
-static int add_children(struct i2c_client *client)
-{
- static const struct {
- int offset;
- char *label;
- } config_inputs[] = {
- /* 8 == right after the LEDs */
- { 8 + 0, "sw6_1", },
- { 8 + 1, "sw6_2", },
- { 8 + 2, "sw6_3", },
- { 8 + 3, "sw6_4", },
- { 8 + 4, "NTSC/nPAL", },
- };
-
- struct device *child;
- int status;
- int i;
-
- /* GPIO-ish stuff */
- dm355evm_msp_gpio.parent = &client->dev;
- status = gpiochip_add_data(&dm355evm_msp_gpio, NULL);
- if (status < 0)
- return status;
-
- /* LED output */
- if (msp_has_leds()) {
- gpiod_add_lookup_table(&evm_leds_gpio_table);
- /* NOTE: these are the only fully programmable LEDs
- * on the board, since GPIO-61/ds22 (and many signals
- * going to DC7) must be used for AEMIF address lines
- * unless the top 1 GB of NAND is unused...
- */
- child = add_child(client, "leds-gpio",
- &evm_led_data, sizeof(evm_led_data),
- false, 0);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- /* configuration inputs */
- for (i = 0; i < ARRAY_SIZE(config_inputs); i++) {
- int gpio = dm355evm_msp_gpio.base + config_inputs[i].offset;
-
- gpio_request_one(gpio, GPIOF_IN, config_inputs[i].label);
-
- /* make it easy for userspace to see these */
- gpio_export(gpio, false);
- }
-
- /* MMC/SD inputs -- right after the last config input */
- if (dev_get_platdata(&client->dev)) {
- void (*mmcsd_setup)(unsigned) = dev_get_platdata(&client->dev);
-
- mmcsd_setup(dm355evm_msp_gpio.base + 8 + 5);
- }
-
- /* RTC is a 32 bit counter, no alarm */
- if (msp_has_rtc()) {
- child = add_child(client, "rtc-dm355evm",
- NULL, 0, false, 0);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- /* input from buttons and IR remote (uses the IRQ) */
- if (msp_has_keyboard()) {
- child = add_child(client, "dm355evm_keys",
- NULL, 0, true, client->irq);
- if (IS_ERR(child))
- return PTR_ERR(child);
- }
-
- return 0;
-}
-
-/*----------------------------------------------------------------------*/
-
-static void dm355evm_command(unsigned command)
-{
- int status;
-
- status = dm355evm_msp_write(command, DM355EVM_MSP_COMMAND);
- if (status < 0)
- dev_err(&msp430->dev, "command %d failure %d\n",
- command, status);
-}
-
-static void dm355evm_power_off(void)
-{
- dm355evm_command(MSP_COMMAND_POWEROFF);
-}
-
-static void dm355evm_msp_remove(struct i2c_client *client)
-{
- pm_power_off = NULL;
- msp430 = NULL;
-}
-
-static int
-dm355evm_msp_probe(struct i2c_client *client, const struct i2c_device_id *id)
-{
- int status;
- const char *video = msp_has_tvp() ? "TVP5146" : "imager";
-
- if (msp430)
- return -EBUSY;
- msp430 = client;
-
- /* display revision status; doubles as sanity check */
- status = dm355evm_msp_read(DM355EVM_MSP_FIRMREV);
- if (status < 0)
- goto fail;
- dev_info(&client->dev, "firmware v.%02X, %s as video-in\n",
- status, video);
-
- /* mux video input: either tvp5146 or some external imager */
- status = dm355evm_msp_write(msp_has_tvp() ? 0 : MSP_VIDEO_IMAGER,
- DM355EVM_MSP_VIDEO_IN);
- if (status < 0)
- dev_warn(&client->dev, "error %d muxing %s as video-in\n",
- status, video);
-
- /* init LED cache, and turn off the LEDs */
- msp_led_cache = 0xff;
- dm355evm_msp_write(msp_led_cache, DM355EVM_MSP_LED);
-
- /* export capabilities we support */
- status = add_children(client);
- if (status < 0)
- goto fail;
-
- /* PM hookup */
- pm_power_off = dm355evm_power_off;
-
- return 0;
-
-fail:
- /* FIXME remove children ... */
- dm355evm_msp_remove(client);
- return status;
-}
-
-static const struct i2c_device_id dm355evm_msp_ids[] = {
- { "dm355evm_msp", 0 },
- { /* end of list */ },
-};
-MODULE_DEVICE_TABLE(i2c, dm355evm_msp_ids);
-
-static struct i2c_driver dm355evm_msp_driver = {
- .driver.name = "dm355evm_msp",
- .id_table = dm355evm_msp_ids,
- .probe = dm355evm_msp_probe,
- .remove = dm355evm_msp_remove,
-};
-
-static int __init dm355evm_msp_init(void)
-{
- return i2c_add_driver(&dm355evm_msp_driver);
-}
-subsys_initcall(dm355evm_msp_init);
-
-static void __exit dm355evm_msp_exit(void)
-{
- i2c_del_driver(&dm355evm_msp_driver);
-}
-module_exit(dm355evm_msp_exit);
-
-MODULE_DESCRIPTION("Interface to MSP430 firmware on DM355EVM");
-MODULE_LICENSE("GPL");
This driver can also be built as a module. If so, the module
will be called rtc-bq32k.
-config RTC_DRV_DM355EVM
- tristate "TI DaVinci DM355 EVM RTC"
- depends on MFD_DM355EVM_MSP
- help
- Supports the RTC firmware in the MSP430 on the DM355 EVM.
-
config RTC_DRV_TWL92330
bool "TI TWL92330/Menelaus"
depends on MENELAUS
obj-$(CONFIG_RTC_DRV_DA9063) += rtc-da9063.o
obj-$(CONFIG_RTC_DRV_DAVINCI) += rtc-davinci.o
obj-$(CONFIG_RTC_DRV_DIGICOLOR) += rtc-digicolor.o
-obj-$(CONFIG_RTC_DRV_DM355EVM) += rtc-dm355evm.o
obj-$(CONFIG_RTC_DRV_DS1216) += rtc-ds1216.o
obj-$(CONFIG_RTC_DRV_DS1286) += rtc-ds1286.o
obj-$(CONFIG_RTC_DRV_DS1302) += rtc-ds1302.o
+++ /dev/null
-// SPDX-License-Identifier: GPL-2.0+
-/*
- * rtc-dm355evm.c - access battery-backed counter in MSP430 firmware
- *
- * Copyright (c) 2008 by David Brownell
- */
-#include <linux/kernel.h>
-#include <linux/init.h>
-#include <linux/rtc.h>
-#include <linux/platform_device.h>
-
-#include <linux/mfd/dm355evm_msp.h>
-#include <linux/module.h>
-
-
-/*
- * The MSP430 firmware on the DM355 EVM uses a watch crystal to feed
- * a 1 Hz counter. When a backup battery is supplied, that makes a
- * reasonable RTC for applications where alarms and non-NTP drift
- * compensation aren't important.
- *
- * The only real glitch is the inability to read or write all four
- * counter bytes atomically: the count may increment in the middle
- * of an operation, causing trouble when the LSB rolls over.
- *
- * This driver was tested with firmware revision A4.
- */
-union evm_time {
- u8 bytes[4];
- u32 value;
-};
-
-static int dm355evm_rtc_read_time(struct device *dev, struct rtc_time *tm)
-{
- union evm_time time;
- int status;
- int tries = 0;
-
- do {
- /*
- * Read LSB(0) to MSB(3) bytes. Defend against the counter
- * rolling over by re-reading until the value is stable,
- * and assuming the four reads take at most a few seconds.
- */
- status = dm355evm_msp_read(DM355EVM_MSP_RTC_0);
- if (status < 0)
- return status;
- if (tries && time.bytes[0] == status)
- break;
- time.bytes[0] = status;
-
- status = dm355evm_msp_read(DM355EVM_MSP_RTC_1);
- if (status < 0)
- return status;
- if (tries && time.bytes[1] == status)
- break;
- time.bytes[1] = status;
-
- status = dm355evm_msp_read(DM355EVM_MSP_RTC_2);
- if (status < 0)
- return status;
- if (tries && time.bytes[2] == status)
- break;
- time.bytes[2] = status;
-
- status = dm355evm_msp_read(DM355EVM_MSP_RTC_3);
- if (status < 0)
- return status;
- if (tries && time.bytes[3] == status)
- break;
- time.bytes[3] = status;
-
- } while (++tries < 5);
-
- dev_dbg(dev, "read timestamp %08x\n", time.value);
-
- rtc_time64_to_tm(le32_to_cpu(time.value), tm);
- return 0;
-}
-
-static int dm355evm_rtc_set_time(struct device *dev, struct rtc_time *tm)
-{
- union evm_time time;
- unsigned long value;
- int status;
-
- value = rtc_tm_to_time64(tm);
- time.value = cpu_to_le32(value);
-
- dev_dbg(dev, "write timestamp %08x\n", time.value);
-
- /*
- * REVISIT handle non-atomic writes ... maybe just retry until
- * byte[1] sticks (no rollover)?
- */
- status = dm355evm_msp_write(time.bytes[0], DM355EVM_MSP_RTC_0);
- if (status < 0)
- return status;
-
- status = dm355evm_msp_write(time.bytes[1], DM355EVM_MSP_RTC_1);
- if (status < 0)
- return status;
-
- status = dm355evm_msp_write(time.bytes[2], DM355EVM_MSP_RTC_2);
- if (status < 0)
- return status;
-
- status = dm355evm_msp_write(time.bytes[3], DM355EVM_MSP_RTC_3);
- if (status < 0)
- return status;
-
- return 0;
-}
-
-static const struct rtc_class_ops dm355evm_rtc_ops = {
- .read_time = dm355evm_rtc_read_time,
- .set_time = dm355evm_rtc_set_time,
-};
-
-/*----------------------------------------------------------------------*/
-
-static int dm355evm_rtc_probe(struct platform_device *pdev)
-{
- struct rtc_device *rtc;
-
- rtc = devm_rtc_allocate_device(&pdev->dev);
- if (IS_ERR(rtc))
- return PTR_ERR(rtc);
-
- platform_set_drvdata(pdev, rtc);
-
- rtc->ops = &dm355evm_rtc_ops;
- rtc->range_max = U32_MAX;
-
- return devm_rtc_register_device(rtc);
-}
-
-/*
- * I2C is used to talk to the MSP430, but this platform device is
- * exposed by an MFD driver that manages I2C communications.
- */
-static struct platform_driver rtc_dm355evm_driver = {
- .probe = dm355evm_rtc_probe,
- .driver = {
- .name = "rtc-dm355evm",
- },
-};
-
-module_platform_driver(rtc_dm355evm_driver);
-
-MODULE_LICENSE("GPL");
+++ /dev/null
-/*
- * dm355evm_msp.h - support MSP430 microcontroller on DM355EVM board
- */
-#ifndef __LINUX_I2C_DM355EVM_MSP
-#define __LINUX_I2C_DM355EVM_MSP
-
-/*
- * Written against Spectrum's writeup for the A4 firmware revision,
- * and tweaked to match source and rev D2 schematics by removing CPLD
- * and NOR flash hooks (which were last appropriate in rev B boards).
- *
- * Note that the firmware supports a flavor of write posting ... to be
- * sure a write completes, issue another read or write.
- */
-
-/* utilities to access "registers" emulated by msp430 firmware */
-extern int dm355evm_msp_write(u8 value, u8 reg);
-extern int dm355evm_msp_read(u8 reg);
-
-
-/* command/control registers */
-#define DM355EVM_MSP_COMMAND 0x00
-# define MSP_COMMAND_NULL 0
-# define MSP_COMMAND_RESET_COLD 1
-# define MSP_COMMAND_RESET_WARM 2
-# define MSP_COMMAND_RESET_WARM_I 3
-# define MSP_COMMAND_POWEROFF 4
-# define MSP_COMMAND_IR_REINIT 5
-#define DM355EVM_MSP_STATUS 0x01
-# define MSP_STATUS_BAD_OFFSET BIT(0)
-# define MSP_STATUS_BAD_COMMAND BIT(1)
-# define MSP_STATUS_POWER_ERROR BIT(2)
-# define MSP_STATUS_RXBUF_OVERRUN BIT(3)
-#define DM355EVM_MSP_RESET 0x02 /* 0 bits == in reset */
-# define MSP_RESET_DC5 BIT(0)
-# define MSP_RESET_TVP5154 BIT(2)
-# define MSP_RESET_IMAGER BIT(3)
-# define MSP_RESET_ETHERNET BIT(4)
-# define MSP_RESET_SYS BIT(5)
-# define MSP_RESET_AIC33 BIT(7)
-
-/* GPIO registers ... bit patterns mostly match the source MSP ports */
-#define DM355EVM_MSP_LED 0x03 /* active low (MSP P4) */
-#define DM355EVM_MSP_SWITCH1 0x04 /* (MSP P5, masked) */
-# define MSP_SWITCH1_SW6_1 BIT(0)
-# define MSP_SWITCH1_SW6_2 BIT(1)
-# define MSP_SWITCH1_SW6_3 BIT(2)
-# define MSP_SWITCH1_SW6_4 BIT(3)
-# define MSP_SWITCH1_J1 BIT(4) /* NTSC/PAL */
-# define MSP_SWITCH1_MSP_INT BIT(5) /* active low */
-#define DM355EVM_MSP_SWITCH2 0x05 /* (MSP P6, masked) */
-# define MSP_SWITCH2_SW10 BIT(3)
-# define MSP_SWITCH2_SW11 BIT(4)
-# define MSP_SWITCH2_SW12 BIT(5)
-# define MSP_SWITCH2_SW13 BIT(6)
-# define MSP_SWITCH2_SW14 BIT(7)
-#define DM355EVM_MSP_SDMMC 0x06 /* (MSP P2, masked) */
-# define MSP_SDMMC_0_WP BIT(1)
-# define MSP_SDMMC_0_CD BIT(2) /* active low */
-# define MSP_SDMMC_1_WP BIT(3)
-# define MSP_SDMMC_1_CD BIT(4) /* active low */
-#define DM355EVM_MSP_FIRMREV 0x07 /* not a GPIO (out of order) */
-#define DM355EVM_MSP_VIDEO_IN 0x08 /* (MSP P3, masked) */
-# define MSP_VIDEO_IMAGER BIT(7) /* low == tvp5146 */
-
-/* power supply registers are currently omitted */
-
-/* RTC registers */
-#define DM355EVM_MSP_RTC_0 0x12 /* LSB */
-#define DM355EVM_MSP_RTC_1 0x13
-#define DM355EVM_MSP_RTC_2 0x14
-#define DM355EVM_MSP_RTC_3 0x15 /* MSB */
-
-/* input event queue registers; code == ((HIGH << 8) | LOW) */
-#define DM355EVM_MSP_INPUT_COUNT 0x16 /* decrement by reading LOW */
-#define DM355EVM_MSP_INPUT_HIGH 0x17
-#define DM355EVM_MSP_INPUT_LOW 0x18
-
-#endif /* __LINUX_I2C_DM355EVM_MSP */
projects / platform / kernel / linux-starfive.git / commitdiff