[PATCH v2 2/2] Input: synaptics-rmi4 - add support for F34 device reflash

From: Nick Dyer
Date: Fri Jul 08 2016 - 07:55:00 EST

Signed-off-by: Nick Dyer <nick@xxxxxxxxxxxxx>
Tested-by: Chris Healy <cphealy@xxxxxxxxx>
---
drivers/input/rmi4/Kconfig | 11 +
drivers/input/rmi4/Makefile | 1 +
drivers/input/rmi4/rmi_bus.c | 3 +
drivers/input/rmi4/rmi_driver.c | 157 +++++++++++++-
drivers/input/rmi4/rmi_driver.h | 6 +
drivers/input/rmi4/rmi_f01.c | 6 +
drivers/input/rmi4/rmi_f34.c | 428 +++++++++++++++++++++++++++++++++++++++
include/linux/rmi.h | 1 +
8 files changed, 611 insertions(+), 2 deletions(-)
create mode 100644 drivers/input/rmi4/rmi_f34.c

diff --git a/drivers/input/rmi4/Kconfig b/drivers/input/rmi4/Kconfig
index f73df24..24c3e1b 100644
--- a/drivers/input/rmi4/Kconfig
+++ b/drivers/input/rmi4/Kconfig
@@ -61,3 +61,14 @@ config RMI4_F30

Function 30 provides GPIO and LED support for RMI4 devices. This
includes support for buttons on TouchPads and ClickPads.
+
+config RMI4_F34
+ bool "RMI4 Function 34 (Device reflash)"
+ depends on RMI4_CORE
+ select FW_LOADER
+ help
+ Say Y here if you want to add support for RMI4 function 34.
+
+ Function 34 provides support for upgrading the firmware on the RMI4
+ device via the firmware loader interface. This is triggered using a
+ sysfs attribute.
diff --git a/drivers/input/rmi4/Makefile b/drivers/input/rmi4/Makefile
index 95c00a7..54e6bfe 100644
--- a/drivers/input/rmi4/Makefile
+++ b/drivers/input/rmi4/Makefile
@@ -7,6 +7,7 @@ rmi_core-$(CONFIG_RMI4_2D_SENSOR) += rmi_2d_sensor.o
rmi_core-$(CONFIG_RMI4_F11) += rmi_f11.o
rmi_core-$(CONFIG_RMI4_F12) += rmi_f12.o
rmi_core-$(CONFIG_RMI4_F30) += rmi_f30.o
+rmi_core-$(CONFIG_RMI4_F34) += rmi_f34.o

# Transports
obj-$(CONFIG_RMI4_I2C) += rmi_i2c.o
diff --git a/drivers/input/rmi4/rmi_bus.c b/drivers/input/rmi4/rmi_bus.c
index b368b05..cdad0b7 100644
--- a/drivers/input/rmi4/rmi_bus.c
+++ b/drivers/input/rmi4/rmi_bus.c
@@ -315,6 +315,9 @@ static struct rmi_function_handler *fn_handlers[] = {
#ifdef CONFIG_RMI4_F30
&rmi_f30_handler,
#endif
+#ifdef CONFIG_RMI4_F34
+ &rmi_f34_handler,
+#endif
};

static void __rmi_unregister_function_handlers(int start_idx)
diff --git a/drivers/input/rmi4/rmi_driver.c b/drivers/input/rmi4/rmi_driver.c
index 543cf7a..3e8d6cd 100644
--- a/drivers/input/rmi4/rmi_driver.c
+++ b/drivers/input/rmi4/rmi_driver.c
@@ -21,6 +21,7 @@
#include <linux/pm.h>
#include <linux/slab.h>
#include <linux/of.h>
+#include <linux/firmware.h>
#include <uapi/linux/input.h>
#include <linux/rmi.h>
#include "rmi_bus.h"
@@ -41,7 +42,16 @@ static void rmi_free_function_list(struct rmi_device *rmi_dev)

rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, "Freeing function list\n");

+ mutex_lock(&data->irq_mutex);
+
data->f01_container = NULL;
+ data->f34_container = NULL;
+ data->irq_status = NULL;
+ data->fn_irq_bits = NULL;
+ data->current_irq_mask = NULL;
+ data->new_irq_mask = NULL;
+
+ mutex_unlock(&data->irq_mutex);

/* Doing it in the reverse order so F01 will be removed last */
list_for_each_entry_safe_reverse(fn, tmp,
@@ -49,6 +59,7 @@ static void rmi_free_function_list(struct rmi_device *rmi_dev)
list_del(&fn->node);
rmi_unregister_function(fn);
}
+
}

static int reset_one_function(struct rmi_function *fn)
@@ -143,8 +154,11 @@ int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
struct rmi_function *entry;
int error;

- if (!data)
+ mutex_lock(&data->irq_mutex);
+ if (!data || !data->irq_status || !data->f01_container) {
+ mutex_unlock(&data->irq_mutex);
return 0;
+ }

if (!rmi_dev->xport->attn_data) {
error = rmi_read_block(rmi_dev,
@@ -156,7 +170,6 @@ int rmi_process_interrupt_requests(struct rmi_device *rmi_dev)
}
}

- mutex_lock(&data->irq_mutex);
bitmap_and(data->irq_status, data->irq_status, data->current_irq_mask,
data->irq_count);
/*
@@ -722,6 +735,7 @@ static int rmi_initial_reset(struct rmi_device *rmi_dev,
return RMI_SCAN_DONE;
}

+ rmi_dbg(RMI_DEBUG_CORE, &rmi_dev->dev, "Sending reset\n");
error = rmi_write_block(rmi_dev, cmd_addr, &cmd_buf, 1);
if (error) {
dev_err(&rmi_dev->dev,
@@ -778,6 +792,8 @@ static int rmi_create_function(struct rmi_device *rmi_dev,

if (pdt->function_number == 0x01)
data->f01_container = fn;
+ else if (pdt->function_number == 0x34)
+ data->f34_container = fn;

list_add_tail(&fn->node, &data->function_list);

@@ -814,10 +830,76 @@ int rmi_driver_resume(struct rmi_device *rmi_dev)
}
EXPORT_SYMBOL_GPL(rmi_driver_resume);

+#ifdef CONFIG_RMI4_F34
+static int rmi_firmware_update(struct rmi_driver_data *data,
+ const struct firmware *fw);
+
+static ssize_t rmi_driver_update_fw_store(struct device *dev,
+ struct device_attribute *dattr,
+ const char *buf, size_t count)
+{
+ struct rmi_driver_data *data = dev_get_drvdata(dev);
+ char fw_name[NAME_MAX];
+ const struct firmware *fw;
+ size_t copy_count = count;
+ int ret;
+
+ if (count == 0 || count >= NAME_MAX)
+ return -EINVAL;
+
+ if (buf[count - 1] == '\0' || buf[count - 1] == '\n')
+ copy_count -= 1;
+
+ strncpy(fw_name, buf, copy_count);
+ fw_name[copy_count] = '\0';
+
+ ret = request_firmware(&fw, fw_name, dev);
+ if (ret)
+ return ret;
+
+ ret = rmi_firmware_update(data, fw);
+
+ release_firmware(fw);
+
+ return ret ?: count;
+}
+
+static DEVICE_ATTR(update_fw, S_IWUSR, NULL, rmi_driver_update_fw_store);
+
+static ssize_t rmi_driver_update_fw_status_show(struct device *dev,
+ struct device_attribute *dattr,
+ char *buf)
+{
+ struct rmi_driver_data *data = dev_get_drvdata(dev);
+ int update_status = 0;
+
+ if (data->f34_container)
+ update_status = rmi_f34_status(data->f34_container);
+
+ return scnprintf(buf, PAGE_SIZE, "%d\n", update_status);
+}
+
+static DEVICE_ATTR(update_fw_status, S_IRUGO,
+ rmi_driver_update_fw_status_show, NULL);
+
+static struct attribute *rmi_firmware_attrs[] = {
+ &dev_attr_update_fw.attr,
+ &dev_attr_update_fw_status.attr,
+ NULL
+};
+
+static struct attribute_group rmi_firmware_attr_group = {
+ .attrs = rmi_firmware_attrs,
+};
+#endif /* CONFIG_RMI4_F34 */
+
static int rmi_driver_remove(struct device *dev)
{
struct rmi_device *rmi_dev = to_rmi_device(dev);

+#ifdef CONFIG_RMI4_F34
+ sysfs_remove_group(&rmi_dev->dev.kobj, &rmi_firmware_attr_group);
+#endif
rmi_free_function_list(rmi_dev);

return 0;
@@ -922,6 +1004,71 @@ err_destroy_functions:
return retval;
}

+#ifdef CONFIG_RMI4_F34
+static int rmi_firmware_update(struct rmi_driver_data *data,
+ const struct firmware *fw)
+{
+ struct device *dev = &data->rmi_dev->dev;
+ int ret;
+
+ if (!data->f34_container) {
+ dev_warn(dev, "%s: No F34 present!\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* Enter flash mode */
+ rmi_dbg(RMI_DEBUG_CORE, dev, "Enabling flash\n");
+ ret = rmi_f34_enable_flash(data->f34_container);
+ if (ret)
+ return ret;
+
+ /* Tear down functions and re-probe */
+ rmi_free_function_list(data->rmi_dev);
+
+ ret = rmi_probe_interrupts(data);
+ if (ret)
+ return ret;
+
+ ret = rmi_init_functions(data);
+ if (ret)
+ return ret;
+
+ if (!data->f01_bootloader_mode || !data->f34_container) {
+ dev_warn(dev, "%s: No F34 present or not in bootloader!\n",
+ __func__);
+ return -EINVAL;
+ }
+
+ /* Perform firmware update */
+ ret = rmi_f34_update_firmware(data->f34_container, fw);
+
+ /* Re-probe */
+ rmi_dbg(RMI_DEBUG_CORE, dev, "Re-probing device\n");
+ rmi_free_function_list(data->rmi_dev);
+
+ ret = rmi_scan_pdt(data->rmi_dev, NULL, rmi_initial_reset);
+ if (ret < 0)
+ dev_warn(dev, "RMI reset failed!\n");
+
+ ret = rmi_probe_interrupts(data);
+ if (ret)
+ return ret;
+
+ ret = rmi_init_functions(data);
+ if (ret)
+ return ret;
+
+ if (data->f01_container->dev.driver)
+ /* Driver already bound, so enable ATTN now. */
+ return enable_sensor(data->rmi_dev);
+
+ rmi_dbg(RMI_DEBUG_CORE, dev, "%s complete\n", __func__);
+
+ return ret;
+}
+#endif
+
static int rmi_driver_probe(struct device *dev)
{
struct rmi_driver *rmi_driver;
@@ -1021,6 +1168,12 @@ static int rmi_driver_probe(struct device *dev)
"%s/input0", dev_name(dev));
}

+#ifdef CONFIG_RMI4_F34
+ retval = sysfs_create_group(&dev->kobj, &rmi_firmware_attr_group);
+ if (retval)
+ goto err_destroy_functions;
+#endif
+
retval = rmi_init_functions(data);
if (retval)
goto err;
diff --git a/drivers/input/rmi4/rmi_driver.h b/drivers/input/rmi4/rmi_driver.h
index 6e140fa..1a21a88 100644
--- a/drivers/input/rmi4/rmi_driver.h
+++ b/drivers/input/rmi4/rmi_driver.h
@@ -96,10 +96,16 @@ bool rmi_is_physical_driver(struct device_driver *);
int rmi_register_physical_driver(void);
void rmi_unregister_physical_driver(void);

+struct firmware;
+
char *rmi_f01_get_product_ID(struct rmi_function *fn);
+int rmi_f34_update_firmware(struct rmi_function *fn, const struct firmware *fw);
+int rmi_f34_enable_flash(struct rmi_function *fn);
+int rmi_f34_status(struct rmi_function *fn);

extern struct rmi_function_handler rmi_f01_handler;
extern struct rmi_function_handler rmi_f11_handler;
extern struct rmi_function_handler rmi_f12_handler;
extern struct rmi_function_handler rmi_f30_handler;
+extern struct rmi_function_handler rmi_f34_handler;
#endif
diff --git a/drivers/input/rmi4/rmi_f01.c b/drivers/input/rmi4/rmi_f01.c
index eb362bc..2fb86ec 100644
--- a/drivers/input/rmi4/rmi_f01.c
+++ b/drivers/input/rmi4/rmi_f01.c
@@ -63,6 +63,8 @@ struct f01_basic_properties {
#define RMI_F01_STATUS_CODE(status) ((status) & 0x0f)
/* The device has lost its configuration for some reason. */
#define RMI_F01_STATUS_UNCONFIGURED(status) (!!((status) & 0x80))
+/* The device is in bootloader mode */
+#define RMI_F01_STATUS_BOOTLOADER(status) ((status) & 0x40)

/* Control register bits */

@@ -594,6 +596,10 @@ static int rmi_f01_attention(struct rmi_function *fn,
return error;
}

+ if (RMI_F01_STATUS_BOOTLOADER(device_status))
+ dev_warn(&fn->dev,
+ "Device in bootloader mode, please update firmware\n");
+
if (RMI_F01_STATUS_UNCONFIGURED(device_status)) {
dev_warn(&fn->dev, "Device reset detected.\n");
error = rmi_dev->driver->reset_handler(rmi_dev);
diff --git a/drivers/input/rmi4/rmi_f34.c b/drivers/input/rmi4/rmi_f34.c
new file mode 100644
index 0000000..8aba89f
--- /dev/null
+++ b/drivers/input/rmi4/rmi_f34.c
@@ -0,0 +1,428 @@
+/*
+ * Copyright (c) 2007-2016, Synaptics Incorporated
+ *
+ * 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/kernel.h>
+#include <linux/rmi.h>
+#include <linux/firmware.h>
+#include <asm/unaligned.h>
+#include <asm/unaligned.h>
+
+#include "rmi_driver.h"
+
+/* F34 image file offsets. */
+#define F34_FW_IMAGE_OFFSET 0x100
+
+/* F34 register offsets. */
+#define F34_BLOCK_DATA_OFFSET 2
+
+/* F34 commands */
+#define F34_WRITE_FW_BLOCK 0x2
+#define F34_ERASE_ALL 0x3
+#define F34_READ_CONFIG_BLOCK 0x5
+#define F34_WRITE_CONFIG_BLOCK 0x6
+#define F34_ERASE_CONFIG 0x7
+#define F34_ENABLE_FLASH_PROG 0xf
+
+#define F34_STATUS_IN_PROGRESS 0xff
+#define F34_STATUS_IDLE 0x80
+
+#define F34_IDLE_WAIT_MS 500
+#define F34_ENABLE_WAIT_MS 300
+#define F34_ERASE_WAIT_MS 5000
+
+#define F34_BOOTLOADER_ID_LEN 2
+
+struct rmi_f34_firmware {
+ __le32 checksum;
+ u8 pad1[3];
+ u8 bootloader_version;
+ __le32 image_size;
+ __le32 config_size;
+ u8 product_id[10];
+ u8 product_info[2];
+ u8 pad2[228];
+ u8 data[];
+};
+
+struct f34_data {
+ struct rmi_function *fn;
+
+ u16 block_size;
+ u16 fw_blocks;
+ u16 config_blocks;
+ u16 ctrl_address;
+ u8 status;
+ struct completion cmd_done;
+
+ struct mutex flash_mutex;
+
+ int update_status;
+ int update_progress;
+ int update_size;
+ struct completion async_firmware_done;
+
+ unsigned char bootloader_id[5];
+ unsigned char configuration_id[9];
+};
+
+static int rmi_f34_write_bootloader_id(struct f34_data *f34)
+{
+ struct rmi_function *fn = f34->fn;
+ struct rmi_device *rmi_dev = fn->rmi_dev;
+ u8 bootloader_id[F34_BOOTLOADER_ID_LEN];
+ int ret;
+
+ ret = rmi_read_block(rmi_dev, fn->fd.query_base_addr,
+ bootloader_id, sizeof(bootloader_id));
+ if (ret) {
+ dev_err(&fn->dev, "%s: Reading bootloader ID failed: %d\n",
+ __func__, ret);
+ return ret;
+ }
+
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: writing bootloader id '%c%c'\n",
+ __func__, bootloader_id[0], bootloader_id[1]);
+
+ ret = rmi_write_block(rmi_dev,
+ fn->fd.data_base_addr + F34_BLOCK_DATA_OFFSET,
+ bootloader_id, sizeof(bootloader_id));
+ if (ret) {
+ dev_err(&fn->dev, "Failed to write bootloader ID: %d\n", ret);
+ return ret;
+ }
+
+ return 0;
+}
+
+static int rmi_f34_command(struct f34_data *f34, u8 command,
+ unsigned int timeout, bool write_bl_id)
+{
+ struct rmi_function *fn = f34->fn;
+ struct rmi_device *rmi_dev = fn->rmi_dev;
+ int ret;
+
+ if (write_bl_id) {
+ ret = rmi_f34_write_bootloader_id(f34);
+ if (ret)
+ return ret;
+ }
+
+ init_completion(&f34->cmd_done);
+
+ ret = rmi_read(rmi_dev, f34->ctrl_address, &f34->status);
+ if (ret) {
+ dev_err(&f34->fn->dev,
+ "%s: Failed to read cmd register: %d (command %#02x)\n",
+ __func__, ret, command);
+ return ret;
+ }
+
+ f34->status |= command & 0x0f;
+
+ ret = rmi_write(rmi_dev, f34->ctrl_address, f34->status);
+ if (ret < 0) {
+ dev_err(&f34->fn->dev,
+ "Failed to write F34 command %#02x: %d\n",
+ command, ret);
+ return ret;
+ }
+
+ if (!wait_for_completion_timeout(&f34->cmd_done,
+ msecs_to_jiffies(timeout))) {
+
+ ret = rmi_read(rmi_dev, f34->ctrl_address, &f34->status);
+ if (ret) {
+ dev_err(&f34->fn->dev,
+ "%s: failed to read status after command %#02x timed out: %d\n",
+ __func__, command, ret);
+ return ret;
+ }
+
+ if (f34->status & 0x7f) {
+ dev_err(&f34->fn->dev,
+ "%s: command %#02x timed out, fw status: %#02x\n",
+ __func__, command, f34->status);
+ return -ETIMEDOUT;
+ }
+ }
+
+ return 0;
+}
+
+static int rmi_f34_attention(struct rmi_function *fn, unsigned long *irq_bits)
+{
+ struct f34_data *f34 = dev_get_drvdata(&fn->dev);
+ int ret;
+
+ ret = rmi_read(f34->fn->rmi_dev, f34->ctrl_address,
+ &f34->status);
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "%s: status: %#02x, ret: %d\n",
+ __func__, f34->status, ret);
+
+ if (!ret && !(f34->status & 0x7f))
+ complete(&f34->cmd_done);
+
+ return 0;
+}
+
+static int rmi_f34_write_blocks(struct f34_data *f34, const void *data,
+ int block_count, u8 command)
+{
+ struct rmi_function *fn = f34->fn;
+ struct rmi_device *rmi_dev = fn->rmi_dev;
+ u16 address = fn->fd.data_base_addr + F34_BLOCK_DATA_OFFSET;
+ u8 start_address[] = { 0, 0 };
+ int i;
+ int ret;
+
+ ret = rmi_write_block(rmi_dev, fn->fd.data_base_addr,
+ start_address, sizeof(start_address));
+ if (ret) {
+ dev_err(&fn->dev, "Failed to write initial zeros: %d\n", ret);
+ return ret;
+ }
+
+ for (i = 0; i < block_count; i++) {
+ ret = rmi_write_block(rmi_dev, address, data, f34->block_size);
+ if (ret) {
+ dev_err(&fn->dev,
+ "failed to write block #%d: %d\n", i, ret);
+ return ret;
+ }
+
+ ret = rmi_f34_command(f34, command, F34_IDLE_WAIT_MS, false);
+ if (ret) {
+ dev_err(&fn->dev,
+ "Failed to write command for block #%d: %d\n",
+ i, ret);
+ return ret;
+ }
+
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "wrote block %d of %d\n",
+ i + 1, block_count);
+
+ data += f34->block_size;
+ f34->update_progress += f34->block_size;
+ f34->update_status = (f34->update_progress * 100) /
+ f34->update_size;
+ }
+
+ return 0;
+}
+
+static int rmi_f34_write_firmware(struct f34_data *f34, const void *data)
+{
+ return rmi_f34_write_blocks(f34, data, f34->fw_blocks,
+ F34_WRITE_FW_BLOCK);
+}
+
+static int rmi_f34_write_config(struct f34_data *f34, const void *data)
+{
+ return rmi_f34_write_blocks(f34, data, f34->config_blocks,
+ F34_WRITE_CONFIG_BLOCK);
+}
+
+int rmi_f34_enable_flash(struct rmi_function *fn)
+{
+ struct f34_data *f34 = dev_get_drvdata(&fn->dev);
+
+ return rmi_f34_command(f34, F34_ENABLE_FLASH_PROG,
+ F34_ENABLE_WAIT_MS, true);
+}
+
+static int rmi_f34_flash_firmware(struct f34_data *f34,
+ const struct rmi_f34_firmware *syn_fw)
+{
+ struct rmi_function *fn = f34->fn;
+ int ret;
+
+ f34->update_progress = 0;
+ f34->update_size = syn_fw->image_size + syn_fw->config_size;
+ if (syn_fw->image_size) {
+ dev_info(&fn->dev, "Erasing FW...\n");
+ ret = rmi_f34_command(f34, F34_ERASE_ALL,
+ F34_ERASE_WAIT_MS, true);
+ if (ret)
+ return ret;
+
+ dev_info(&fn->dev, "Writing firmware data (%d bytes)...\n",
+ syn_fw->image_size);
+ ret = rmi_f34_write_firmware(f34, syn_fw->data);
+ if (ret)
+ return ret;
+ }
+
+ if (syn_fw->config_size) {
+ /*
+ * We only need to erase config if we haven't updated
+ * firmware.
+ */
+ if (!syn_fw->image_size) {
+ dev_info(&fn->dev, "%s: Erasing config data...\n",
+ __func__);
+ ret = rmi_f34_command(f34, F34_ERASE_CONFIG,
+ F34_ERASE_WAIT_MS, true);
+ if (ret)
+ return ret;
+ }
+
+ dev_info(&fn->dev, "%s: Writing config data (%d bytes)...\n",
+ __func__, syn_fw->config_size);
+ ret = rmi_f34_write_config(f34,
+ &syn_fw->data[syn_fw->image_size]);
+ if (ret)
+ return ret;
+ }
+
+ dev_info(&fn->dev, "%s: Firmware update complete\n", __func__);
+ return 0;
+}
+
+int rmi_f34_update_firmware(struct rmi_function *fn, const struct firmware *fw)
+{
+ struct f34_data *f34 = dev_get_drvdata(&fn->dev);
+ const struct rmi_f34_firmware *syn_fw;
+ int ret;
+
+ syn_fw = (const struct rmi_f34_firmware *)fw->data;
+ BUILD_BUG_ON(offsetof(struct rmi_f34_firmware, data) !=
+ F34_FW_IMAGE_OFFSET);
+
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev,
+ "FW size:%d, checksum:%08x, image_size:%d, config_size:%d\n",
+ (int)fw->size,
+ le32_to_cpu(syn_fw->checksum),
+ le32_to_cpu(syn_fw->image_size),
+ le32_to_cpu(syn_fw->config_size));
+
+ dev_info(&fn->dev,
+ "FW bootloader_id:%02x, product_id:%.*s, info: %02x%02x\n",
+ syn_fw->bootloader_version,
+ (int)sizeof(syn_fw->product_id), syn_fw->product_id,
+ syn_fw->product_info[0], syn_fw->product_info[1]);
+
+ if (syn_fw->image_size &&
+ syn_fw->image_size != f34->fw_blocks * f34->block_size) {
+ dev_err(&fn->dev,
+ "Bad firmware image: fw size %d, expected %d\n",
+ syn_fw->image_size,
+ f34->fw_blocks * f34->block_size);
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ if (syn_fw->config_size &&
+ syn_fw->config_size != f34->config_blocks * f34->block_size) {
+ dev_err(&fn->dev,
+ "Bad firmware image: config size %d, expected %d\n",
+ syn_fw->config_size,
+ f34->config_blocks * f34->block_size);
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ if (syn_fw->image_size && !syn_fw->config_size) {
+ dev_err(&fn->dev,
+ "Bad firmware image: no config data\n");
+ ret = -EILSEQ;
+ goto out;
+ }
+
+ dev_info(&fn->dev, "Starting firmware update\n");
+ mutex_lock(&f34->flash_mutex);
+
+ ret = rmi_f34_flash_firmware(f34, syn_fw);
+ dev_info(&fn->dev, "Firmware update complete, status:%d\n", ret);
+
+ f34->update_status = ret;
+ mutex_unlock(&f34->flash_mutex);
+
+out:
+ return ret;
+}
+
+int rmi_f34_status(struct rmi_function *fn)
+{
+ struct f34_data *f34 = dev_get_drvdata(&fn->dev);
+
+ /*
+ * The status is the percentage complete, or once complete,
+ * zero for success or a negative return code.
+ */
+ return f34->update_status;
+}
+
+static int rmi_f34_probe(struct rmi_function *fn)
+{
+ struct f34_data *f34;
+ unsigned char f34_queries[9];
+ bool has_config_id;
+ int ret;
+
+ f34 = devm_kzalloc(&fn->dev, sizeof(struct f34_data), GFP_KERNEL);
+ if (!f34)
+ return -ENOMEM;
+
+ f34->fn = fn;
+ dev_set_drvdata(&fn->dev, f34);
+
+ mutex_init(&f34->flash_mutex);
+ init_completion(&f34->cmd_done);
+ init_completion(&f34->async_firmware_done);
+
+ ret = rmi_read_block(fn->rmi_dev, fn->fd.query_base_addr,
+ f34_queries, sizeof(f34_queries));
+ if (ret) {
+ dev_err(&fn->dev, "%s: Failed to query properties\n",
+ __func__);
+ return ret;
+ }
+
+ snprintf(f34->bootloader_id, sizeof(f34->bootloader_id),
+ "%c%c", f34_queries[0], f34_queries[1]);
+
+ f34->block_size = get_unaligned_le16(&f34_queries[3]);
+ f34->fw_blocks = get_unaligned_le16(&f34_queries[5]);
+ f34->config_blocks = get_unaligned_le16(&f34_queries[7]);
+ f34->ctrl_address = fn->fd.data_base_addr + F34_BLOCK_DATA_OFFSET +
+ f34->block_size;
+ has_config_id = f34_queries[2] & (1 << 2);
+
+ dev_info(&fn->dev, "Bootloader ID: %s\n", f34->bootloader_id);
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "Block size: %d\n", f34->block_size);
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "FW blocks: %d\n", f34->fw_blocks);
+ rmi_dbg(RMI_DEBUG_FN, &fn->dev, "CFG blocks: %d\n", f34->config_blocks);
+
+ if (has_config_id) {
+ ret = rmi_read_block(fn->rmi_dev, fn->fd.control_base_addr,
+ f34_queries, sizeof(f34_queries));
+ if (ret) {
+ dev_err(&fn->dev, "Failed to read F34 config ID\n");
+ return ret;
+ }
+
+ snprintf(f34->configuration_id,
+ sizeof(f34->configuration_id),
+ "%02x%02x%02x%02x", f34_queries[0],
+ f34_queries[1], f34_queries[2],
+ f34_queries[3]);
+ dev_info(&fn->dev, "Configuration ID: %s\n",
+ f34->configuration_id);
+ }
+
+ return 0;
+}
+
+struct rmi_function_handler rmi_f34_handler = {
+ .driver = {
+ .name = "rmi4_f34",
+ },
+ .func = 0x34,
+ .probe = rmi_f34_probe,
+ .attention = rmi_f34_attention,
+};
diff --git a/include/linux/rmi.h b/include/linux/rmi.h
index e0aca14..a283a67 100644
--- a/include/linux/rmi.h
+++ b/include/linux/rmi.h
@@ -330,6 +330,7 @@ struct rmi_driver_data {
struct rmi_device *rmi_dev;

struct rmi_function *f01_container;
+ struct rmi_function *f34_container;
bool f01_bootloader_mode;

u32 attn_count;
--
1.7.9.5