* [RFC 2.6.27 3/5] Add support for Wacom W8001 penabled serial touchscreen
2008-11-04 0:55 [RFC 2.6.27] AM300 kit support Jaya Kumar
2008-11-04 0:55 ` [RFC 2.6.27 1/5] Fixup reset for systems using reboot=cold or other strings Jaya Kumar
2008-11-04 0:55 ` [RFC 2.6.27 2/5] Fix is_vbus_present to return 1 or 0 Jaya Kumar
@ 2008-11-04 0:55 ` Jaya Kumar
2008-11-04 0:55 ` [RFC 2.6.27 4/5] Move am200 specific gpio pins into am200epd Jaya Kumar
2008-11-04 0:55 ` [RFC 2.6.27 5/5] Add support for E-Ink Broadsheet controller and AM300 kit Jaya Kumar
4 siblings, 0 replies; 8+ messages in thread
From: Jaya Kumar @ 2008-11-04 0:55 UTC (permalink / raw)
To: linux-arm-kernel; +Cc: linux-fbdev-devel, linux-input, Jaya Kumar
The Wacom W8001 sensor is a sensor device (uses electromagnetic resonance)
and it is interfaced via its serial microcontroller to the host.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
---
drivers/input/touchscreen/Kconfig | 13 ++
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/wacom_w8001.c | 325 +++++++++++++++++++++++++++++++
include/linux/serio.h | 1 +
4 files changed, 340 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/touchscreen/wacom_w8001.c
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 6e1e8c6..239c4f6 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -91,6 +91,19 @@ config TOUCHSCREEN_ELO
To compile this driver as a module, choose M here: the
module will be called elo.
+config TOUCHSCREEN_WACOM_W8001
+ tristate "Wacom W8001 penabled serial touchscreen"
+ select SERIO
+ help
+ Say Y here if you have an Wacom W8001 penabled serial touchscreen
+ connected to your system.
+
+ If unsure, say N.
+
+ To compile this driver as a module, choose M here: the
+ module will be called wacom_w8001.
+
+
config TOUCHSCREEN_MTOUCH
tristate "MicroTouch serial touchscreens"
select SERIO
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 15cf290..3dc84d3 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -26,6 +26,7 @@ obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
obj-$(CONFIG_TOUCHSCREEN_UCB1400) += ucb1400_ts.o
+obj-$(CONFIG_TOUCHSCREEN_WACOM_W8001) += wacom_w8001.o
obj-$(CONFIG_TOUCHSCREEN_WM97XX) += wm97xx-ts.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9705) += wm9705.o
wm97xx-ts-$(CONFIG_TOUCHSCREEN_WM9712) += wm9712.o
diff --git a/drivers/input/touchscreen/wacom_w8001.c b/drivers/input/touchscreen/wacom_w8001.c
new file mode 100644
index 0000000..2f33a01
--- /dev/null
+++ b/drivers/input/touchscreen/wacom_w8001.c
@@ -0,0 +1,325 @@
+/*
+ * Wacom W8001 penabled serial touchscreen driver
+ *
+ * Copyright (c) 2008 Jaya Kumar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ * Layout based on Elo serial touchscreen driver by Vojtech Pavlik
+ */
+
+#include <linux/errno.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+#include <linux/input.h>
+#include <linux/serio.h>
+#include <linux/init.h>
+#include <linux/ctype.h>
+
+#define DRIVER_DESC "Wacom W8001 serial touchscreen driver"
+
+MODULE_AUTHOR("Jaya Kumar <jayakumar.lkml@gmail.com>");
+MODULE_DESCRIPTION(DRIVER_DESC);
+MODULE_LICENSE("GPL");
+
+/*
+ * Definitions & global arrays.
+ */
+
+#define W8001_MAX_LENGTH 11
+#define W8001_PACKET_LEN 11
+#define W8001_LEAD_MASK 0x80
+#define W8001_LEAD_BYTE 0x80
+#define W8001_TAB_MASK 0x40
+#define W8001_TAB_BYTE 0x40
+
+#define W8001_QUERY_PACKET 0x20
+
+struct w8001_coord {
+ u8 rdy;
+ u8 tsw;
+ u8 f1;
+ u8 f2;
+ u16 x;
+ u16 y;
+ u16 pen_pressure;
+ u8 tilt_x;
+ u8 tilt_y;
+};
+
+/*
+ * Per-touchscreen data.
+ */
+
+struct w8001 {
+ struct input_dev *dev;
+ struct serio *serio;
+ struct mutex cmd_mutex;
+ struct completion cmd_done;
+ int id;
+ int idx;
+ unsigned char expected_packet;
+ unsigned char data[W8001_MAX_LENGTH];
+ unsigned char response[W8001_PACKET_LEN];
+ char phys[32];
+};
+
+static int parse_data(u8 *data, struct w8001_coord *coord)
+{
+ coord->rdy = data[0] & 0x20;
+ coord->tsw = data[0] & 0x01;
+ coord->f1 = data[0] & 0x02;
+ coord->f2 = data[0] & 0x04;
+
+ coord->x = (data[1] & 0x7F) << 9;
+ coord->x |= (data[2] & 0x7F) << 2;
+ coord->x |= (data[6] & 0x60) >> 5;
+
+ coord->y = (data[3] & 0x7F) << 9;
+ coord->y |= (data[4] & 0x7F) << 2;
+ coord->y |= (data[6] & 0x18) >> 3;
+
+ coord->pen_pressure = data[5] & 0x7F;
+ coord->pen_pressure |= (data[6] & 0x07) << 7 ;
+
+ coord->tilt_x = data[7] & 0x7F;
+ coord->tilt_y = data[8] & 0x7F;
+
+ return 0;
+}
+
+static void w8001_process_data(struct w8001 *w8001, unsigned char data)
+{
+ struct input_dev *dev = w8001->dev;
+ u8 tmp;
+ struct w8001_coord coord;
+
+ w8001->data[w8001->idx] = data;
+ switch (w8001->idx++) {
+ case 0:
+ if ((data & W8001_LEAD_MASK) != W8001_LEAD_BYTE) {
+ pr_debug("w8001: unsynchronized data: 0x%02x\n", data);
+ w8001->idx = 0;
+ }
+ break;
+ case 8:
+ tmp = w8001->data[0] & W8001_TAB_MASK;
+ if (unlikely(tmp == W8001_TAB_BYTE))
+ break;
+ w8001->idx = 0;
+ memset(&coord, 0, sizeof(coord));
+ parse_data(w8001->data, &coord);
+ input_report_abs(dev, ABS_X, coord.x);
+ input_report_abs(dev, ABS_Y, coord.y);
+ input_report_abs(dev, ABS_PRESSURE, coord.pen_pressure);
+ input_report_key(dev, BTN_TOUCH, coord.tsw);
+ input_sync(dev);
+ break;
+ case 10:
+ w8001->idx = 0;
+ memcpy(w8001->response, &w8001->data, W8001_PACKET_LEN);
+ w8001->expected_packet = W8001_QUERY_PACKET;
+ complete(&w8001->cmd_done);
+ break;
+ }
+}
+
+
+static irqreturn_t w8001_interrupt(struct serio *serio,
+ unsigned char data, unsigned int flags)
+{
+ struct w8001 *w8001 = serio_get_drvdata(serio);
+
+ w8001_process_data(w8001, data);
+
+ return IRQ_HANDLED;
+}
+
+static int w8001_async_command(struct w8001 *w8001, unsigned char *packet,
+ int len)
+{
+ int rc = -1;
+ int i;
+
+ mutex_lock(&w8001->cmd_mutex);
+
+ for (i = 0; i < len; i++) {
+ if (serio_write(w8001->serio, packet[i]))
+ goto out;
+ }
+ rc = 0;
+
+out:
+ mutex_unlock(&w8001->cmd_mutex);
+ return rc;
+}
+
+static int w8001_command(struct w8001 *w8001, unsigned char *packet, int len)
+{
+ int rc = -1;
+ int i;
+
+ mutex_lock(&w8001->cmd_mutex);
+
+ serio_pause_rx(w8001->serio);
+ init_completion(&w8001->cmd_done);
+ serio_continue_rx(w8001->serio);
+
+ for (i = 0; i < len; i++) {
+ if (serio_write(w8001->serio, packet[i]))
+ goto out;
+ }
+
+ wait_for_completion_timeout(&w8001->cmd_done, HZ);
+
+ if (w8001->expected_packet == W8001_QUERY_PACKET) {
+ /* We are back in reporting mode, the query was ACKed */
+ memcpy(packet, w8001->response, W8001_PACKET_LEN);
+ rc = 0;
+ }
+
+out:
+ mutex_unlock(&w8001->cmd_mutex);
+ return rc;
+}
+
+static int w8001_setup(struct w8001 *w8001)
+{
+ struct w8001_coord coord;
+ struct input_dev *dev = w8001->dev;
+ unsigned char start[1] = { '1' };
+ unsigned char query[11] = { '*' };
+
+ if (w8001_command(w8001, query, 1))
+ return -1;
+
+ memset(&coord, 0, sizeof(coord));
+ parse_data(query, &coord);
+
+ input_set_abs_params(dev, ABS_X, 0, coord.x, 0, 0);
+ input_set_abs_params(dev, ABS_Y, 0, coord.y, 0, 0);
+ input_set_abs_params(dev, ABS_PRESSURE, 0, coord.pen_pressure, 0, 0);
+ input_set_abs_params(dev, ABS_TILT_X, 0, coord.tilt_x, 0, 0);
+ input_set_abs_params(dev, ABS_TILT_Y, 0, coord.tilt_y, 0, 0);
+
+ if (w8001_async_command(w8001, start, 1))
+ return -1;
+
+ return 0;
+}
+
+/*
+ * w8001_disconnect() is the opposite of w8001_connect()
+ */
+
+static void w8001_disconnect(struct serio *serio)
+{
+ struct w8001 *w8001 = serio_get_drvdata(serio);
+
+ input_get_device(w8001->dev);
+ input_unregister_device(w8001->dev);
+ serio_close(serio);
+ serio_set_drvdata(serio, NULL);
+ input_put_device(w8001->dev);
+ kfree(w8001);
+}
+
+/*
+ * w8001_connect() is the routine that is called when someone adds a
+ * new serio device that supports the w8001 protocol and registers it as
+ * an input device.
+ */
+
+static int w8001_connect(struct serio *serio, struct serio_driver *drv)
+{
+ struct w8001 *w8001;
+ struct input_dev *input_dev;
+ int err;
+
+ w8001 = kzalloc(sizeof(struct w8001), GFP_KERNEL);
+ input_dev = input_allocate_device();
+ if (!w8001 || !input_dev) {
+ err = -ENOMEM;
+ goto fail1;
+ }
+
+ w8001->serio = serio;
+ w8001->id = serio->id.id;
+ w8001->dev = input_dev;
+ mutex_init(&w8001->cmd_mutex);
+ init_completion(&w8001->cmd_done);
+ snprintf(w8001->phys, sizeof(w8001->phys), "%s/input0", serio->phys);
+
+ input_dev->name = "Wacom W8001 Penabled Serial TouchScreen";
+ input_dev->phys = w8001->phys;
+ input_dev->id.bustype = BUS_RS232;
+ input_dev->id.vendor = SERIO_W8001;
+ input_dev->id.product = w8001->id;
+ input_dev->id.version = 0x0100;
+ input_dev->dev.parent = &serio->dev;
+
+ input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_ABS);
+ input_dev->keybit[BIT_WORD(BTN_TOUCH)] = BIT_MASK(BTN_TOUCH);
+
+ serio_set_drvdata(serio, w8001);
+ err = serio_open(serio, drv);
+ if (err)
+ goto fail2;
+
+ if (w8001_setup(w8001))
+ goto fail3;
+
+ err = input_register_device(w8001->dev);
+ if (err)
+ goto fail3;
+
+ return 0;
+
+fail3:
+ serio_close(serio);
+fail2:
+ serio_set_drvdata(serio, NULL);
+fail1:
+ input_free_device(input_dev);
+ kfree(w8001);
+ return err;
+}
+
+static struct serio_device_id w8001_serio_ids[] = {
+ {
+ .type = SERIO_RS232,
+ .proto = SERIO_W8001,
+ .id = SERIO_ANY,
+ .extra = SERIO_ANY,
+ },
+ { 0 }
+};
+
+MODULE_DEVICE_TABLE(serio, w8001_serio_ids);
+
+static struct serio_driver w8001_drv = {
+ .driver = {
+ .name = "w8001",
+ },
+ .description = DRIVER_DESC,
+ .id_table = w8001_serio_ids,
+ .interrupt = w8001_interrupt,
+ .connect = w8001_connect,
+ .disconnect = w8001_disconnect,
+};
+
+static int __init w8001_init(void)
+{
+ return serio_register_driver(&w8001_drv);
+}
+
+static void __exit w8001_exit(void)
+{
+ serio_unregister_driver(&w8001_drv);
+}
+
+module_init(w8001_init);
+module_exit(w8001_exit);
diff --git a/include/linux/serio.h b/include/linux/serio.h
index 25641d9..1bcb357 100644
--- a/include/linux/serio.h
+++ b/include/linux/serio.h
@@ -213,5 +213,6 @@ static inline void serio_unpin_driver(struct serio *serio)
#define SERIO_ZHENHUA 0x36
#define SERIO_INEXIO 0x37
#define SERIO_TOUCHIT213 0x37
+#define SERIO_W8001 0x39
#endif
--
1.5.2.3
^ permalink raw reply related [flat|nested] 8+ messages in thread* [RFC 2.6.27 5/5] Add support for E-Ink Broadsheet controller and AM300 kit
2008-11-04 0:55 [RFC 2.6.27] AM300 kit support Jaya Kumar
` (3 preceding siblings ...)
2008-11-04 0:55 ` [RFC 2.6.27 4/5] Move am200 specific gpio pins into am200epd Jaya Kumar
@ 2008-11-04 0:55 ` Jaya Kumar
2008-12-09 13:35 ` Eric Miao
4 siblings, 1 reply; 8+ messages in thread
From: Jaya Kumar @ 2008-11-04 0:55 UTC (permalink / raw)
To: linux-arm-kernel; +Cc: linux-fbdev-devel, linux-input, Jaya Kumar
This patch adds support for the E-Ink Broadsheet display controller and the
AM300 gumstix kit.
Signed-off-by: Jaya Kumar <jayakumar.lkml@gmail.com>
---
arch/arm/mach-pxa/Kconfig | 4 +
arch/arm/mach-pxa/Makefile | 1 +
arch/arm/mach-pxa/am300epd.c | 337 +++++++++++++++++++++++++
drivers/video/Kconfig | 14 +
drivers/video/Makefile | 3 +-
drivers/video/broadsheetfb.c | 570 ++++++++++++++++++++++++++++++++++++++++++
include/video/broadsheetfb.h | 63 +++++
7 files changed, 991 insertions(+), 1 deletions(-)
create mode 100644 arch/arm/mach-pxa/am300epd.c
create mode 100644 drivers/video/broadsheetfb.c
create mode 100644 include/video/broadsheetfb.h
diff --git a/arch/arm/mach-pxa/Kconfig b/arch/arm/mach-pxa/Kconfig
index f27f6b3..5bdd4e9 100644
--- a/arch/arm/mach-pxa/Kconfig
+++ b/arch/arm/mach-pxa/Kconfig
@@ -339,6 +339,10 @@ config MACH_AM200EPD
depends on MACH_GUMSTIX_F
bool "Enable AM200EPD board support"
+config MACH_AM300EPD
+ depends on MACH_GUMSTIX_F
+ bool "Enable AM300EPD board support"
+
config PXA_EZX
bool "Motorola EZX Platform"
select PXA27x
diff --git a/arch/arm/mach-pxa/Makefile b/arch/arm/mach-pxa/Makefile
index d31c997..5ea970b 100644
--- a/arch/arm/mach-pxa/Makefile
+++ b/arch/arm/mach-pxa/Makefile
@@ -28,6 +28,7 @@ obj-$(CONFIG_CPU_PXA930) += pxa930.o
# Specific board support
obj-$(CONFIG_ARCH_GUMSTIX) += gumstix.o
obj-$(CONFIG_MACH_AM200EPD) += am200epd.o
+obj-$(CONFIG_MACH_AM300EPD) += am300epd.o
obj-$(CONFIG_ARCH_LUBBOCK) += lubbock.o
obj-$(CONFIG_MACH_LOGICPD_PXA270) += lpd270.o
obj-$(CONFIG_MACH_MAINSTONE) += mainstone.o
diff --git a/arch/arm/mach-pxa/am300epd.c b/arch/arm/mach-pxa/am300epd.c
new file mode 100644
index 0000000..bb81564
--- /dev/null
+++ b/arch/arm/mach-pxa/am300epd.c
@@ -0,0 +1,337 @@
+/*
+ * am300epd.c -- Platform device for AM300 EPD kit
+ *
+ * Copyright (C) 2008, Jaya Kumar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ * This work was made possible by help and equipment support from E-Ink
+ * Corporation. http://support.eink.com/community
+ *
+ * This driver is written to be used with the Broadsheet display controller.
+ * on the AM300 EPD prototype kit/development kit with an E-Ink 800x600
+ * Vizplex EPD on a Gumstix board using the Broadsheet interface board.
+ *
+ */
+
+#define DEBUG 1
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/irq.h>
+#include <linux/gpio.h>
+
+#include <mach/gumstix.h>
+#include <mach/mfp-pxa25x.h>
+#include <mach/pxafb.h>
+
+#include "generic.h"
+
+#include <video/broadsheetfb.h>
+
+static unsigned int panel_type = 6;
+static struct platform_device *am300_device;
+static struct broadsheet_board am300_board;
+
+static unsigned long am300_pin_config[] __initdata = {
+ GPIO16_GPIO,
+ GPIO17_GPIO,
+ GPIO32_GPIO,
+ GPIO48_GPIO,
+ GPIO49_GPIO,
+ GPIO51_GPIO,
+ GPIO74_GPIO,
+ GPIO75_GPIO,
+ GPIO76_GPIO,
+ GPIO77_GPIO,
+
+ /* this is the 16-bit hdb bus 58-73 */
+ GPIO58_GPIO,
+ GPIO59_GPIO,
+ GPIO60_GPIO,
+ GPIO61_GPIO,
+
+ GPIO62_GPIO,
+ GPIO63_GPIO,
+ GPIO64_GPIO,
+ GPIO65_GPIO,
+
+ GPIO66_GPIO,
+ GPIO67_GPIO,
+ GPIO68_GPIO,
+ GPIO69_GPIO,
+
+ GPIO70_GPIO,
+ GPIO71_GPIO,
+ GPIO72_GPIO,
+ GPIO73_GPIO,
+};
+
+/* register offsets for gpio control */
+#define PWR_GPIO_PIN 16
+#define CFG_GPIO_PIN 17
+#define RDY_GPIO_PIN 32
+#define DC_GPIO_PIN 48
+#define RST_GPIO_PIN 49
+#define LED_GPIO_PIN 51
+#define RD_GPIO_PIN 74
+#define WR_GPIO_PIN 75
+#define CS_GPIO_PIN 76
+#define IRQ_GPIO_PIN 77
+
+/* hdb bus */
+#define DB0_GPIO_PIN 58
+#define DB15_GPIO_PIN 73
+
+static int gpios[] = { PWR_GPIO_PIN, CFG_GPIO_PIN, RDY_GPIO_PIN, DC_GPIO_PIN,
+ RST_GPIO_PIN, RD_GPIO_PIN, WR_GPIO_PIN, CS_GPIO_PIN,
+ IRQ_GPIO_PIN, LED_GPIO_PIN };
+static char *gpio_names[] = { "PWR", "CFG", "RDY", "DC", "RST", "RD", "WR",
+ "CS", "IRQ", "LED" };
+
+static int am300_wait_for_rdy(struct broadsheetfb_par *par)
+{
+ unsigned long flags;
+ DEFINE_WAIT(wait);
+
+ spin_lock_irqsave(par->lock, flags);
+ while (!gpio_get_value(RDY_GPIO_PIN)) {
+ prepare_to_wait(&par->waitq, &wait, TASK_INTERRUPTIBLE);
+
+ spin_unlock_irqrestore(par->lock, flags);
+ schedule();
+ spin_lock_irqsave(par->lock, flags);
+ }
+ finish_wait(&par->waitq, &wait);
+
+ spin_unlock_irqrestore(par->lock, flags);
+ return 0;
+
+}
+
+static int am300_init_gpio_regs(struct broadsheetfb_par *par)
+{
+ int i;
+ int err;
+ char dbname[8];
+
+ for (i = 0; i < ARRAY_SIZE(gpios); i++) {
+ err = gpio_request(gpios[i], gpio_names[i]);
+ if (err) {
+ dev_err(&am300_device->dev, "failed requesting "
+ "gpio %s, err=%d\n", gpio_names[i], err);
+ goto err_req_gpio;
+ }
+ }
+
+ /* we also need to take care of the hdb bus */
+ for (i = DB0_GPIO_PIN; i <= DB15_GPIO_PIN; i++) {
+ sprintf(dbname, "DB%d", i);
+ err = gpio_request(i, dbname);
+ if (err) {
+ dev_err(&am300_device->dev, "failed requesting "
+ "gpio %d, err=%d\n", i, err);
+ while (i >= DB0_GPIO_PIN)
+ gpio_free(i--);
+ i = ARRAY_SIZE(gpios) - 1;
+ goto err_req_gpio;
+ }
+ }
+
+ /* setup the outputs and init values */
+ gpio_direction_output(PWR_GPIO_PIN, 0);
+ gpio_direction_output(CFG_GPIO_PIN, 1);
+ gpio_direction_output(DC_GPIO_PIN, 0);
+ gpio_direction_output(RD_GPIO_PIN, 1);
+ gpio_direction_output(WR_GPIO_PIN, 1);
+ gpio_direction_output(CS_GPIO_PIN, 1);
+ gpio_direction_output(RST_GPIO_PIN, 0);
+
+ /* setup the inputs */
+ gpio_direction_input(RDY_GPIO_PIN);
+ gpio_direction_input(IRQ_GPIO_PIN);
+
+ /* start the hdb bus as an input */
+ for (i = DB0_GPIO_PIN; i <= DB15_GPIO_PIN; i++)
+ gpio_direction_output(i, 0);
+
+ /* go into command mode */
+ gpio_set_value(CFG_GPIO_PIN, 1);
+ gpio_set_value(RST_GPIO_PIN, 0);
+ mdelay(10);
+ gpio_set_value(RST_GPIO_PIN, 1);
+ mdelay(10);
+ am300_wait_for_rdy(par);
+
+ return 0;
+
+err_req_gpio:
+ while (i > 0)
+ gpio_free(gpios[i--]);
+
+ return err;
+}
+
+static int am300_init_board(struct broadsheetfb_par *par)
+{
+ int ret;
+
+ /* setup pins */
+ ret = am300_init_gpio_regs(par);
+ if (ret)
+ return ret;
+
+ return 0;
+}
+
+static void am300_cleanup(struct broadsheetfb_par *par)
+{
+ int i;
+
+ free_irq(IRQ_GPIO(RDY_GPIO_PIN), par);
+
+ for (i = 0; i < ARRAY_SIZE(gpios); i++)
+ gpio_free(gpios[i]);
+
+ for (i = DB0_GPIO_PIN; i <= DB15_GPIO_PIN; i++)
+ gpio_free(i);
+
+}
+
+static u16 am300_get_hdb(struct broadsheetfb_par *par)
+{
+ u16 res = 0;
+ int i;
+
+ for (i = 0; i <= (DB15_GPIO_PIN - DB0_GPIO_PIN) ; i++)
+ res |= (gpio_get_value(DB0_GPIO_PIN + i)) ? (1 << i) : 0;
+
+ return res;
+}
+
+static void am300_set_hdb(struct broadsheetfb_par *par, u16 data)
+{
+ int i;
+
+ for (i = 0; i <= (DB15_GPIO_PIN - DB0_GPIO_PIN) ; i++)
+ gpio_set_value(DB0_GPIO_PIN + i, (data >> i) & 0x01);
+}
+
+
+static void am300_set_ctl(struct broadsheetfb_par *par, unsigned char bit,
+ u8 state)
+{
+ switch (bit) {
+ case BS_CS:
+ gpio_set_value(CS_GPIO_PIN, state);
+ break;
+ case BS_DC:
+ gpio_set_value(DC_GPIO_PIN, state);
+ break;
+ case BS_WR:
+ gpio_set_value(WR_GPIO_PIN, state);
+ break;
+ }
+}
+
+static int am300_get_panel_type(void)
+{
+ return panel_type;
+}
+
+static irqreturn_t am300_handle_irq(int irq, void *dev_id)
+{
+ unsigned long flags;
+ struct broadsheetfb_par *par = dev_id;
+
+ spin_lock_irqsave(par->lock, flags);
+ wake_up_interruptible(&par->waitq);
+ spin_unlock_irqrestore(par->lock, flags);
+ return IRQ_HANDLED;
+}
+
+static int am300_setup_irq(struct fb_info *info)
+{
+ int ret;
+ struct broadsheetfb_par *par = info->par;
+
+ spin_lock_init(&par->lock);
+
+ ret = request_irq(IRQ_GPIO(RDY_GPIO_PIN), am300_handle_irq,
+ IRQF_DISABLED|IRQF_TRIGGER_RISING,
+ "AM300", par);
+ if (ret)
+ dev_err(&am300_device->dev, "request_irq failed: %d\n", ret);
+
+ return ret;
+}
+
+static int am300_wait_event(struct broadsheetfb_par *par)
+{
+ return wait_event_timeout(par->waitq, gpio_get_value(RDY_GPIO_PIN), HZ);
+}
+
+static int am300_wait_event_intr(struct broadsheetfb_par *par)
+{
+ return wait_event_interruptible_timeout(par->waitq,
+ gpio_get_value(RDY_GPIO_PIN), HZ);
+}
+
+static struct broadsheet_board am300_board = {
+ .owner = THIS_MODULE,
+ .init = am300_init_board,
+ .cleanup = am300_cleanup,
+ .set_hdb = am300_set_hdb,
+ .get_hdb = am300_get_hdb,
+ .set_ctl = am300_set_ctl,
+ .wait_for_rdy = am300_wait_for_rdy,
+ .get_panel_type = am300_get_panel_type,
+ .setup_irq = am300_setup_irq,
+ .wait_event = am300_wait_event,
+ .wait_event_intr = am300_wait_event_intr,
+};
+
+static int __init am300_init(void)
+{
+ int ret;
+
+ pxa2xx_mfp_config(ARRAY_AND_SIZE(am300_pin_config));
+
+ /* request our platform independent driver */
+ request_module("broadsheetfb");
+
+ am300_device = platform_device_alloc("broadsheetfb", -1);
+ if (!am300_device)
+ return -ENOMEM;
+
+ /* the am300_board that will be seen by broadsheetfb is a copy */
+ platform_device_add_data(am300_device, &am300_board,
+ sizeof(am300_board));
+
+ ret = platform_device_add(am300_device);
+
+ if (ret) {
+ platform_device_put(am300_device);
+ return ret;
+ }
+
+ return 0;
+}
+
+module_param(panel_type, uint, 0);
+MODULE_PARM_DESC(panel_type, "Select the panel type: 6, 8, 97");
+
+module_init(am300_init);
+
+MODULE_DESCRIPTION("board driver for am300 epd kit");
+MODULE_AUTHOR("Jaya Kumar");
+MODULE_LICENSE("GPL");
diff --git a/drivers/video/Kconfig b/drivers/video/Kconfig
index 0f13448..db49aa4 100644
--- a/drivers/video/Kconfig
+++ b/drivers/video/Kconfig
@@ -2083,6 +2083,20 @@ config FB_METRONOME
controller. The pre-release name for this device was 8track
and could also have been called by some vendors as PVI-nnnn.
+config FB_BROADSHEET
+ tristate "E-Ink Broadsheet/Epson S1D13521 controller support"
+ depends on FB
+ select FB_SYS_FILLRECT
+ select FB_SYS_COPYAREA
+ select FB_SYS_IMAGEBLIT
+ select FB_SYS_FOPS
+ select FB_DEFERRED_IO
+ help
+ This driver implements support for the E-Ink Broadsheet
+ controller. The release name for this device was Epson S1D13521
+ and could also have been called by other names when coupled with
+ a bridge adapter.
+
source "drivers/video/omap/Kconfig"
source "drivers/video/backlight/Kconfig"
diff --git a/drivers/video/Makefile b/drivers/video/Makefile
index 248bddc..05efefa 100644
--- a/drivers/video/Makefile
+++ b/drivers/video/Makefile
@@ -105,7 +105,8 @@ obj-$(CONFIG_FB_PMAG_AA) += pmag-aa-fb.o
obj-$(CONFIG_FB_PMAG_BA) += pmag-ba-fb.o
obj-$(CONFIG_FB_PMAGB_B) += pmagb-b-fb.o
obj-$(CONFIG_FB_MAXINE) += maxinefb.o
-obj-$(CONFIG_FB_METRONOME) += metronomefb.o
+obj-$(CONFIG_FB_METRONOME) += metronomefb.o
+obj-$(CONFIG_FB_BROADSHEET) += broadsheetfb.o
obj-$(CONFIG_FB_S1D13XXX) += s1d13xxxfb.o
obj-$(CONFIG_FB_SH7760) += sh7760fb.o
obj-$(CONFIG_FB_IMX) += imxfb.o
diff --git a/drivers/video/broadsheetfb.c b/drivers/video/broadsheetfb.c
new file mode 100644
index 0000000..00e800a
--- /dev/null
+++ b/drivers/video/broadsheetfb.c
@@ -0,0 +1,570 @@
+/*
+ * broadsheetfb.c -- FB driver for E-Ink Broadsheet controller
+ *
+ * Copyright (C) 2008, Jaya Kumar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ * Layout is based on skeletonfb.c by James Simmons and Geert Uytterhoeven.
+ *
+ * This driver is written to be used with the Broadsheet display controller.
+ *
+ * It is intended to be architecture independent. A board specific driver
+ * must be used to perform all the physical IO interactions.
+ *
+ */
+#define DEBUG 1
+
+#include <linux/module.h>
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/string.h>
+#include <linux/mm.h>
+#include <linux/slab.h>
+#include <linux/vmalloc.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/fb.h>
+#include <linux/init.h>
+#include <linux/platform_device.h>
+#include <linux/list.h>
+#include <linux/uaccess.h>
+
+#include <video/broadsheetfb.h>
+
+/* Display specific information */
+#define DPY_W 800
+#define DPY_H 600
+
+static struct fb_fix_screeninfo broadsheetfb_fix __devinitdata = {
+ .id = "broadsheetfb",
+ .type = FB_TYPE_PACKED_PIXELS,
+ .visual = FB_VISUAL_STATIC_PSEUDOCOLOR,
+ .xpanstep = 0,
+ .ypanstep = 0,
+ .ywrapstep = 0,
+ .line_length = DPY_W,
+ .accel = FB_ACCEL_NONE,
+};
+
+static struct fb_var_screeninfo broadsheetfb_var __devinitdata = {
+ .xres = DPY_W,
+ .yres = DPY_H,
+ .xres_virtual = DPY_W,
+ .yres_virtual = DPY_H,
+ .bits_per_pixel = 8,
+ .grayscale = 1,
+ .nonstd = 1,
+ .red = { 0, 4, 0 },
+ .green = { 0, 4, 0 },
+ .blue = { 0, 4, 0 },
+ .transp = { 0, 0, 0 },
+};
+
+/* main broadsheetfb functions */
+static void broadsheet_issue_data(struct broadsheetfb_par *par, u16 data)
+{
+ par->board->set_ctl(par, BS_WR, 0);
+ par->board->set_hdb(par, data);
+ par->board->set_ctl(par, BS_WR, 1);
+}
+
+static void broadsheet_issue_cmd(struct broadsheetfb_par *par, u16 data)
+{
+ par->board->set_ctl(par, BS_DC, 0);
+ broadsheet_issue_data(par, data);
+}
+
+static void broadsheet_send_command(struct broadsheetfb_par *par, u16 data)
+{
+ par->board->wait_for_rdy(par);
+
+ par->board->set_ctl(par, BS_CS, 0);
+ broadsheet_issue_cmd(par, data);
+ par->board->set_ctl(par, BS_DC, 1);
+ par->board->set_ctl(par, BS_CS, 1);
+}
+
+static void broadsheet_send_cmdargs(struct broadsheetfb_par *par, u16 cmd,
+ int argc, u16 *argv)
+{
+ int i;
+
+ par->board->wait_for_rdy(par);
+
+ par->board->set_ctl(par, BS_CS, 0);
+ broadsheet_issue_cmd(par, cmd);
+ par->board->set_ctl(par, BS_DC, 1);
+
+ for (i = 0; i < argc; i++)
+ broadsheet_issue_data(par, argv[i]);
+ par->board->set_ctl(par, BS_CS, 1);
+}
+
+static void broadsheet_burst_write(struct broadsheetfb_par *par, int size,
+ u16 *data)
+{
+ int i;
+ u16 tmp;
+
+ par->board->set_ctl(par, BS_CS, 0);
+ par->board->set_ctl(par, BS_DC, 1);
+
+ for (i = 0; i < size; i++) {
+ par->board->set_ctl(par, BS_WR, 0);
+ tmp = (data[i] & 0x0F) << 4;
+ tmp |= (data[i] & 0x0F00) << 4;
+ par->board->set_hdb(par, tmp);
+ par->board->set_ctl(par, BS_WR, 1);
+ }
+
+ par->board->set_ctl(par, BS_CS, 1);
+}
+
+static u16 broadsheet_get_data(struct broadsheetfb_par *par)
+{
+ u16 res;
+ /* wait for ready to go hi. (lo is busy) */
+ par->board->wait_for_rdy(par);
+
+ /* cs lo, dc lo for cmd, we lo for each data, db as usual */
+ par->board->set_ctl(par, BS_DC, 1);
+ par->board->set_ctl(par, BS_CS, 0);
+ par->board->set_ctl(par, BS_WR, 0);
+
+ res = par->board->get_hdb(par);
+
+ /* strobe wr */
+ par->board->set_ctl(par, BS_WR, 1);
+ par->board->set_ctl(par, BS_CS, 1);
+
+ return res;
+}
+
+static void broadsheet_write_reg(struct broadsheetfb_par *par, u16 reg,
+ u16 data)
+{
+ /* wait for ready to go hi. (lo is busy) */
+ par->board->wait_for_rdy(par);
+
+ /* cs lo, dc lo for cmd, we lo for each data, db as usual */
+ par->board->set_ctl(par, BS_CS, 0);
+
+ broadsheet_issue_cmd(par, BS_CMD_WR_REG);
+
+ par->board->set_ctl(par, BS_DC, 1);
+
+ broadsheet_issue_data(par, reg);
+ broadsheet_issue_data(par, data);
+
+ par->board->set_ctl(par, BS_CS, 1);
+}
+
+static u16 broadsheet_read_reg(struct broadsheetfb_par *par, u16 reg)
+{
+ broadsheet_send_command(par, reg);
+ mdelay(100);
+ return broadsheet_get_data(par);
+}
+
+static void __devinit broadsheet_init_display(struct broadsheetfb_par *par)
+{
+ u16 args[5];
+
+ args[0] = DPY_W;
+ args[1] = DPY_H;
+ args[2] = (100 | (1 << 8) | (1 << 9)); /* sdcfg */
+ args[3] = 2; /* gdrv cfg */
+ args[4] = (4 | (1 << 7)); /* lut index format */
+ broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args);
+
+ /* did the controller really set it? */
+ broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_CFG, 5, args);
+
+ args[0] = 4; /* fsync len */
+ args[1] = (10 << 8) | 4; /* fend/fbegin len */
+ args[2] = 10; /* line sync len */
+ args[3] = (100 << 8) | 4; /* line end/begin len */
+ args[4] = 6; /* pixel clock cfg */
+ broadsheet_send_cmdargs(par, BS_CMD_INIT_DSPE_TMG, 5, args);
+
+ /* setup waveform */
+ args[0] = 0x886;
+ args[1] = 0;
+ broadsheet_send_cmdargs(par, BS_CMD_RD_WFM_INFO, 2, args);
+
+ broadsheet_send_command(par, BS_CMD_UPD_GDRV_CLR);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG);
+
+ broadsheet_write_reg(par, 0x330, 0x84);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG);
+
+ args[0] = (0x3 << 4);
+ broadsheet_send_cmdargs(par, BS_CMD_LD_IMG, 1, args);
+
+ args[0] = 0x154;
+ broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args);
+
+ broadsheet_burst_write(par, DPY_W*DPY_H/2,
+ (u16 *) par->info->screen_base);
+
+ broadsheet_send_command(par, BS_CMD_LD_IMG_END);
+
+ args[0] = 0x4300;
+ broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND);
+
+ par->board->wait_for_rdy(par);
+}
+
+static void __devinit broadsheet_init(struct broadsheetfb_par *par)
+{
+ broadsheet_send_command(par, BS_CMD_INIT_SYS_RUN);
+ /* the controller needs a second */
+ mdelay(1000);
+ broadsheet_init_display(par);
+}
+
+static void broadsheetfb_dpy_update_pages(struct broadsheetfb_par *par,
+ u16 y1, u16 y2)
+{
+ u16 args[5];
+ unsigned char *buf = (unsigned char __force *)par->info->screen_base;
+
+ /* y1 must be a multiple of 4 so drop the lower bits */
+ y1 &= 0xFFFC;
+ /* y2 must be a multiple of 4 , but - 1 so up the lower bits */
+ y2 |= 0x0003;
+
+ args[0] = 0x3 << 4;
+ args[1] = 0;
+ args[2] = y1;
+ args[3] = cpu_to_le16(par->info->var.xres);
+ args[4] = y2;
+ broadsheet_send_cmdargs(par, BS_CMD_LD_IMG_AREA, 5, args);
+
+ args[0] = 0x154;
+ broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args);
+
+ buf += y1 * par->info->var.xres;
+ broadsheet_burst_write(par, ((1 + y2 - y1) * par->info->var.xres)/2,
+ (u16 *) buf);
+
+ broadsheet_send_command(par, BS_CMD_LD_IMG_END);
+
+ args[0] = 0x4300;
+ broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND);
+
+ par->board->wait_for_rdy(par);
+
+}
+
+static void broadsheetfb_dpy_update(struct broadsheetfb_par *par)
+{
+ u16 args[5];
+
+ args[0] = 0x3 << 4;
+ broadsheet_send_cmdargs(par, BS_CMD_LD_IMG, 1, args);
+
+ args[0] = 0x154;
+ broadsheet_send_cmdargs(par, BS_CMD_WR_REG, 1, args);
+ broadsheet_burst_write(par, DPY_W*DPY_H/2,
+ (u16 *) par->info->screen_base);
+
+ broadsheet_send_command(par, BS_CMD_LD_IMG_END);
+
+ args[0] = 0x4300;
+ broadsheet_send_cmdargs(par, BS_CMD_UPD_FULL, 1, args);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_TRG);
+
+ broadsheet_send_command(par, BS_CMD_WAIT_DSPE_FREND);
+
+ par->board->wait_for_rdy(par);
+
+}
+
+/* this is called back from the deferred io workqueue */
+static void broadsheetfb_dpy_deferred_io(struct fb_info *info,
+ struct list_head *pagelist)
+{
+ u16 y1 = 0, h = 0;
+ int prev_index = -1;
+ struct page *cur;
+ struct fb_deferred_io *fbdefio = info->fbdefio;
+ int h_inc;
+ u16 yres = info->var.yres;
+ u16 xres = info->var.xres;
+
+ /* height increment is fixed per page */
+ h_inc = DIV_ROUND_UP(PAGE_SIZE , xres);
+
+ /* walk the written page list and swizzle the data */
+ list_for_each_entry(cur, &fbdefio->pagelist, lru) {
+ if (prev_index < 0) {
+ /* just starting so assign first page */
+ y1 = (cur->index << PAGE_SHIFT) / xres;
+ h = h_inc;
+ } else if ((prev_index + 1) == cur->index) {
+ /* this page is consecutive so increase our height */
+ h += h_inc;
+ } else {
+ /* page not consecutive, issue previous update first */
+ broadsheetfb_dpy_update_pages(info->par, y1, y1 + h);
+ /* start over with our non consecutive page */
+ y1 = (cur->index << PAGE_SHIFT) / xres;
+ h = h_inc;
+ }
+ prev_index = cur->index;
+ }
+
+ /* if we still have any pages to update we do so now */
+ if (h >= yres) {
+ /* its a full screen update, just do it */
+ broadsheetfb_dpy_update(info->par);
+ } else {
+ broadsheetfb_dpy_update_pages(info->par, y1,
+ min((u16) (y1 + h), yres));
+ }
+}
+
+static void broadsheetfb_fillrect(struct fb_info *info,
+ const struct fb_fillrect *rect)
+{
+ struct broadsheetfb_par *par = info->par;
+
+ sys_fillrect(info, rect);
+
+ broadsheetfb_dpy_update(par);
+}
+
+static void broadsheetfb_copyarea(struct fb_info *info,
+ const struct fb_copyarea *area)
+{
+ struct broadsheetfb_par *par = info->par;
+
+ sys_copyarea(info, area);
+
+ broadsheetfb_dpy_update(par);
+}
+
+static void broadsheetfb_imageblit(struct fb_info *info,
+ const struct fb_image *image)
+{
+ struct broadsheetfb_par *par = info->par;
+
+ sys_imageblit(info, image);
+
+ broadsheetfb_dpy_update(par);
+}
+
+/*
+ * this is the slow path from userspace. they can seek and write to
+ * the fb. it's inefficient to do anything less than a full screen draw
+ */
+static ssize_t broadsheetfb_write(struct fb_info *info, const char __user *buf,
+ size_t count, loff_t *ppos)
+{
+ struct broadsheetfb_par *par = info->par;
+ unsigned long p = *ppos;
+ void *dst;
+ int err = 0;
+ unsigned long total_size;
+
+ if (info->state != FBINFO_STATE_RUNNING)
+ return -EPERM;
+
+ total_size = info->fix.smem_len;
+
+ if (p > total_size)
+ return -EFBIG;
+
+ if (count > total_size) {
+ err = -EFBIG;
+ count = total_size;
+ }
+
+ if (count + p > total_size) {
+ if (!err)
+ err = -ENOSPC;
+
+ count = total_size - p;
+ }
+
+ dst = (void __force *) (info->screen_base + p);
+
+ if (copy_from_user(dst, buf, count))
+ err = -EFAULT;
+
+ if (!err)
+ *ppos += count;
+
+ broadsheetfb_dpy_update(par);
+
+ return (err) ? err : count;
+}
+
+static struct fb_ops broadsheetfb_ops = {
+ .owner = THIS_MODULE,
+ .fb_read = fb_sys_read,
+ .fb_write = broadsheetfb_write,
+ .fb_fillrect = broadsheetfb_fillrect,
+ .fb_copyarea = broadsheetfb_copyarea,
+ .fb_imageblit = broadsheetfb_imageblit,
+};
+
+static struct fb_deferred_io broadsheetfb_defio = {
+ .delay = HZ/4,
+ .deferred_io = broadsheetfb_dpy_deferred_io,
+};
+
+static int __devinit broadsheetfb_probe(struct platform_device *dev)
+{
+ struct fb_info *info;
+ struct broadsheet_board *board;
+ int retval = -ENOMEM;
+ int videomemorysize;
+ unsigned char *videomemory;
+ struct broadsheetfb_par *par;
+ int i;
+
+ /* pick up board specific routines */
+ board = dev->dev.platform_data;
+ if (!board)
+ return -EINVAL;
+
+ /* try to count device specific driver, if can't, platform recalls */
+ if (!try_module_get(board->owner))
+ return -ENODEV;
+
+ info = framebuffer_alloc(sizeof(struct broadsheetfb_par), &dev->dev);
+ if (!info)
+ goto err;
+
+ videomemorysize = (DPY_W*DPY_H);
+ videomemory = vmalloc(videomemorysize);
+ if (!videomemory)
+ goto err_fb_rel;
+
+ memset(videomemory, 0, videomemorysize);
+
+ info->screen_base = (char __force __iomem *)videomemory;
+ info->fbops = &broadsheetfb_ops;
+
+ info->var = broadsheetfb_var;
+ info->fix = broadsheetfb_fix;
+ info->fix.smem_len = videomemorysize;
+ par = info->par;
+ par->info = info;
+ par->board = board;
+ par->write_reg = broadsheet_write_reg;
+ par->read_reg = broadsheet_read_reg;
+ init_waitqueue_head(&par->waitq);
+
+ info->flags = FBINFO_FLAG_DEFAULT;
+
+ info->fbdefio = &broadsheetfb_defio;
+ fb_deferred_io_init(info);
+
+ retval = fb_alloc_cmap(&info->cmap, 16, 0);
+ if (retval < 0) {
+ dev_err(&dev->dev, "Failed to allocate colormap\n");
+ goto err_vfree;
+ }
+
+ /* set cmap */
+ for (i = 0; i < 16; i++)
+ info->cmap.red[i] = (((2*i)+1)*(0xFFFF))/32;
+ memcpy(info->cmap.green, info->cmap.red, sizeof(u16)*16);
+ memcpy(info->cmap.blue, info->cmap.red, sizeof(u16)*16);
+
+ retval = par->board->setup_irq(info);
+ if (retval < 0)
+ goto err_cmap;
+
+ /* this inits the dpy */
+ retval = board->init(par);
+ if (retval < 0)
+ goto err_free_irq;
+
+ broadsheet_init(par);
+
+ retval = register_framebuffer(info);
+ if (retval < 0)
+ goto err_free_irq;
+ platform_set_drvdata(dev, info);
+
+ printk(KERN_INFO
+ "fb%d: Broadsheet frame buffer, using %dK of video memory\n",
+ info->node, videomemorysize >> 10);
+
+
+ return 0;
+
+err_free_irq:
+ board->cleanup(par);
+err_cmap:
+ fb_dealloc_cmap(&info->cmap);
+err_vfree:
+ vfree(videomemory);
+err_fb_rel:
+ framebuffer_release(info);
+err:
+ module_put(board->owner);
+ return retval;
+
+}
+
+static int __devexit broadsheetfb_remove(struct platform_device *dev)
+{
+ struct fb_info *info = platform_get_drvdata(dev);
+
+ if (info) {
+ struct broadsheetfb_par *par = info->par;
+ unregister_framebuffer(info);
+ fb_deferred_io_cleanup(info);
+ par->board->cleanup(par);
+ fb_dealloc_cmap(&info->cmap);
+ vfree((void __force *)info->screen_base);
+ module_put(par->board->owner);
+ framebuffer_release(info);
+ }
+ return 0;
+}
+
+static struct platform_driver broadsheetfb_driver = {
+ .probe = broadsheetfb_probe,
+ .remove = broadsheetfb_remove,
+ .driver = {
+ .owner = THIS_MODULE,
+ .name = "broadsheetfb",
+ },
+};
+
+static int __init broadsheetfb_init(void)
+{
+ return platform_driver_register(&broadsheetfb_driver);
+}
+
+static void __exit broadsheetfb_exit(void)
+{
+ platform_driver_unregister(&broadsheetfb_driver);
+}
+
+module_init(broadsheetfb_init);
+module_exit(broadsheetfb_exit);
+
+MODULE_DESCRIPTION("fbdev driver for Broadsheet controller");
+MODULE_AUTHOR("Jaya Kumar");
+MODULE_LICENSE("GPL");
diff --git a/include/video/broadsheetfb.h b/include/video/broadsheetfb.h
new file mode 100644
index 0000000..f233537
--- /dev/null
+++ b/include/video/broadsheetfb.h
@@ -0,0 +1,63 @@
+/*
+ * broadsheetfb.h - definitions for the broadsheet framebuffer driver
+ *
+ * Copyright (C) 2008 by Jaya Kumar
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License. See the file COPYING in the main directory of this archive for
+ * more details.
+ *
+ */
+
+#ifndef _LINUX_BROADSHEETFB_H_
+#define _LINUX_BROADSHEETFB_H_
+
+/* Broadsheet command defines */
+#define BS_CMD_INIT_SYS_RUN 0x06
+#define BS_CMD_INIT_DSPE_CFG 0x09
+#define BS_CMD_INIT_DSPE_TMG 0x0A
+#define BS_CMD_INIT_ROTMODE 0x0B
+#define BS_CMD_RD_REG 0x10
+#define BS_CMD_WR_REG 0x11
+#define BS_CMD_LD_IMG 0x20
+#define BS_CMD_LD_IMG_AREA 0x22
+#define BS_CMD_LD_IMG_END 0x23
+#define BS_CMD_WAIT_DSPE_TRG 0x28
+#define BS_CMD_WAIT_DSPE_FREND 0x29
+#define BS_CMD_RD_WFM_INFO 0x30
+#define BS_CMD_UPD_INIT 0x32
+#define BS_CMD_UPD_FULL 0x33
+#define BS_CMD_UPD_GDRV_CLR 0x37
+
+/* Broadsheet pin interface specific defines */
+#define BS_CS 0x01
+#define BS_DC 0x02
+#define BS_WR 0x03
+
+/* struct used by broadsheet. board specific stuff comes from *board */
+struct broadsheetfb_par {
+ struct fb_info *info;
+ struct broadsheet_board *board;
+ void (*write_reg)(struct broadsheetfb_par *, u16 reg, u16 val);
+ u16 (*read_reg)(struct broadsheetfb_par *, u16 reg);
+ wait_queue_head_t waitq;
+ spinlock_t lock;
+};
+
+/* board specific routines */
+struct broadsheet_board {
+ struct module *owner;
+ int (*init)(struct broadsheetfb_par *);
+ int (*wait_for_rdy)(struct broadsheetfb_par *);
+ int (*wait_for_rdy_lo)(struct broadsheetfb_par *);
+ void (*set_ctl)(struct broadsheetfb_par *, unsigned char, u8);
+ void (*set_hdb)(struct broadsheetfb_par *, u16);
+ u16 (*get_hdb)(struct broadsheetfb_par *);
+ void (*cleanup)(struct broadsheetfb_par *);
+ int (*get_panel_type)(void);
+ int (*setup_irq)(struct fb_info *);
+ int (*wait_event)(struct broadsheetfb_par *);
+ int (*wait_event_intr)(struct broadsheetfb_par *);
+};
+
+#endif
--
1.5.2.3
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