* [PATCH v4 1/5] input: add driver for tnetv107x on-chip keypad controller
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
@ 2010-09-20 16:26 ` Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 2/5] davinci: add tnetv107x keypad platform device Cyril Chemparathy
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Cyril Chemparathy @ 2010-09-20 16:26 UTC (permalink / raw)
To: linux-input, davinci-linux-open-source
Cc: shubhrajyoti, dmitry.torokhov, khilman, Cyril Chemparathy
This patch adds support for tnetv107x's on-chip keypad controller.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/input/keyboard/Kconfig | 9 +
drivers/input/keyboard/Makefile | 1 +
drivers/input/keyboard/tnetv107x-keypad.c | 340 +++++++++++++++++++++++++++++
3 files changed, 350 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/keyboard/tnetv107x-keypad.c
diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig
index 9cc488d..df1facb 100644
--- a/drivers/input/keyboard/Kconfig
+++ b/drivers/input/keyboard/Kconfig
@@ -424,6 +424,15 @@ config KEYBOARD_OMAP
To compile this driver as a module, choose M here: the
module will be called omap-keypad.
+config KEYBOARD_TNETV107X
+ tristate "TI TNETV107X keypad support"
+ depends on ARCH_DAVINCI_TNETV107X
+ help
+ Say Y here if you want to use the TNETV107X keypad.
+
+ To compile this driver as a module, choose M here: the
+ module will be called tnetv107x-keypad.
+
config KEYBOARD_TWL4030
tristate "TI TWL4030/TWL5030/TPS659x0 keypad support"
depends on TWL4030_CORE
diff --git a/drivers/input/keyboard/Makefile b/drivers/input/keyboard/Makefile
index 504b591..dc04518 100644
--- a/drivers/input/keyboard/Makefile
+++ b/drivers/input/keyboard/Makefile
@@ -38,6 +38,7 @@ obj-$(CONFIG_KEYBOARD_SH_KEYSC) += sh_keysc.o
obj-$(CONFIG_KEYBOARD_STMPE) += stmpe-keypad.o
obj-$(CONFIG_KEYBOARD_STOWAWAY) += stowaway.o
obj-$(CONFIG_KEYBOARD_SUNKBD) += sunkbd.o
+obj-$(CONFIG_KEYBOARD_TNETV107X) += tnetv107x-keypad.o
obj-$(CONFIG_KEYBOARD_TWL4030) += twl4030_keypad.o
obj-$(CONFIG_KEYBOARD_XTKBD) += xtkbd.o
obj-$(CONFIG_KEYBOARD_W90P910) += w90p910_keypad.o
diff --git a/drivers/input/keyboard/tnetv107x-keypad.c b/drivers/input/keyboard/tnetv107x-keypad.c
new file mode 100644
index 0000000..b4a81eb
--- /dev/null
+++ b/drivers/input/keyboard/tnetv107x-keypad.c
@@ -0,0 +1,340 @@
+/*
+ * Texas Instruments TNETV107X Keypad Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+#include <linux/input/matrix_keypad.h>
+
+#define BITS(x) (BIT(x) - 1)
+
+#define KEYPAD_ROWS 9
+#define KEYPAD_COLS 9
+
+#define DEBOUNCE_MIN 0x400ul
+#define DEBOUNCE_MAX 0x3ffffffful
+
+struct keypad_regs {
+ u32 rev;
+ u32 mode;
+ u32 mask;
+ u32 pol;
+ u32 dclock;
+ u32 rclock;
+ u32 stable_cnt;
+ u32 in_en;
+ u32 out;
+ u32 out_en;
+ u32 in;
+ u32 lock;
+ u32 pres[3];
+};
+
+#define keypad_read(kp, reg) __raw_readl(&(kp)->regs->reg)
+#define keypad_write(kp, reg, val) __raw_writel(val, &(kp)->regs->reg)
+
+struct keypad_data {
+ struct input_dev *input_dev;
+ struct resource *res;
+ struct keypad_regs __iomem *regs;
+ struct clk *clk;
+ struct device *dev;
+ spinlock_t lock;
+ u32 irq_press;
+ u32 irq_release;
+ int rows, cols, row_shift;
+ int debounce_ms, active_low;
+ u32 prev_keys[3];
+ unsigned short keycodes[];
+};
+
+static irqreturn_t keypad_irq(int irq, void *data)
+{
+ struct keypad_data *kp = data;
+ int i, bit, val, row, col, code;
+ unsigned long flags;
+ u32 curr_keys[3];
+ u32 change;
+
+ spin_lock_irqsave(&kp->lock, flags);
+
+ memset(curr_keys, 0, sizeof(curr_keys));
+ if (irq == kp->irq_press)
+ for (i = 0; i < 3; i++)
+ curr_keys[i] = keypad_read(kp, pres[i]);
+
+ for (i = 0; i < 3; i++) {
+ change = curr_keys[i] ^ kp->prev_keys[i];
+
+ while (change) {
+ bit = fls(change) - 1;
+ change ^= BIT(bit);
+ val = curr_keys[i] & BIT(bit);
+ bit += i * 32;
+ row = bit / KEYPAD_COLS;
+ col = bit % KEYPAD_COLS;
+
+ code = MATRIX_SCAN_CODE(row, col, kp->row_shift);
+ input_event(kp->input_dev, EV_MSC, MSC_SCAN, code);
+ input_report_key(kp->input_dev, kp->keycodes[code],
+ val);
+ }
+ }
+ input_sync(kp->input_dev);
+ memcpy(kp->prev_keys, curr_keys, sizeof(curr_keys));
+
+ if (irq == kp->irq_press)
+ keypad_write(kp, lock, 0); /* Allow hardware updates */
+
+ spin_unlock_irqrestore(&kp->lock, flags);
+
+ return IRQ_HANDLED;
+}
+
+static int keypad_start(struct input_dev *dev)
+{
+ struct keypad_data *kp = input_get_drvdata(dev);
+ unsigned long mask, debounce, clk_rate_khz;
+ unsigned long flags;
+
+ clk_enable(kp->clk);
+ clk_rate_khz = clk_get_rate(kp->clk) / 1000;
+
+ spin_lock_irqsave(&kp->lock, flags);
+
+ /* Initialize device registers */
+ keypad_write(kp, mode, 0);
+
+ mask = BITS(kp->rows) << KEYPAD_COLS;
+ mask |= BITS(kp->cols);
+ keypad_write(kp, mask, ~mask);
+
+ keypad_write(kp, pol, kp->active_low ? 0 : 0x3ffff);
+ keypad_write(kp, stable_cnt, 3);
+
+ debounce = kp->debounce_ms * clk_rate_khz;
+ debounce = clamp(debounce, DEBOUNCE_MIN, DEBOUNCE_MAX);
+ keypad_write(kp, dclock, debounce);
+ keypad_write(kp, rclock, 4 * debounce);
+
+ keypad_write(kp, in_en, 1);
+
+ spin_unlock_irqrestore(&kp->lock, flags);
+
+ return 0;
+}
+
+static void keypad_stop(struct input_dev *dev)
+{
+ struct keypad_data *kp = input_get_drvdata(dev);
+
+ synchronize_irq(kp->irq_press);
+ synchronize_irq(kp->irq_release);
+ clk_disable(kp->clk);
+}
+
+static int __devinit keypad_probe(struct platform_device *pdev)
+{
+ const struct matrix_keypad_platform_data *pdata;
+ const struct matrix_keymap_data *keymap_data;
+ struct device *dev = &pdev->dev;
+ struct keypad_data *kp;
+ int error = 0, sz, row_shift;
+ u32 rev = 0;
+
+ pdata = pdev->dev.platform_data;
+ if (!pdata) {
+ dev_err(dev, "cannot find device data\n");
+ return -EINVAL;
+ }
+
+ keymap_data = pdata->keymap_data;
+ if (!keymap_data) {
+ dev_err(dev, "cannot find keymap data\n");
+ return -EINVAL;
+ }
+
+ row_shift = get_count_order(pdata->num_col_gpios);
+ sz = offsetof(struct keypad_data, keycodes);
+ sz += (pdata->num_row_gpios << row_shift) * sizeof(kp->keycodes[0]);
+ kp = kzalloc(sz, GFP_KERNEL);
+ if (!kp) {
+ dev_err(dev, "cannot allocate device info\n");
+ return -ENOMEM;
+ }
+
+ kp->dev = dev;
+ kp->rows = pdata->num_row_gpios;
+ kp->cols = pdata->num_col_gpios;
+ kp->row_shift = row_shift;
+ platform_set_drvdata(pdev, kp);
+ spin_lock_init(&kp->lock);
+
+ kp->irq_press = platform_get_irq_byname(pdev, "press");
+ kp->irq_release = platform_get_irq_byname(pdev, "release");
+ if (kp->irq_press < 0 || kp->irq_release < 0) {
+ dev_err(dev, "cannot determine device interrupts\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ kp->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!kp->res) {
+ dev_err(dev, "cannot determine register area\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ if (!request_mem_region(kp->res->start, resource_size(kp->res),
+ pdev->name)) {
+ dev_err(dev, "cannot claim register memory\n");
+ kp->res = NULL;
+ error = -EINVAL;
+ goto error_res;
+ }
+
+ kp->regs = ioremap(kp->res->start, resource_size(kp->res));
+ if (!kp->regs) {
+ dev_err(dev, "cannot map register memory\n");
+ error = -ENOMEM;
+ goto error_map;
+ }
+
+ kp->clk = clk_get(dev, NULL);
+ if (!kp->clk) {
+ dev_err(dev, "cannot claim device clock\n");
+ error = -EINVAL;
+ goto error_clk;
+ }
+
+ error = request_threaded_irq(kp->irq_press, NULL, keypad_irq, 0,
+ dev_name(dev), kp);
+ if (error < 0) {
+ dev_err(kp->dev, "Could not allocate keypad press key irq\n");
+ goto error_irq_press;
+ }
+
+ error = request_threaded_irq(kp->irq_release, NULL, keypad_irq, 0,
+ dev_name(dev), kp);
+ if (error < 0) {
+ dev_err(kp->dev, "Could not allocate keypad release key irq\n");
+ goto error_irq_release;
+ }
+
+ kp->input_dev = input_allocate_device();
+ if (!kp->input_dev) {
+ dev_err(dev, "cannot allocate input device\n");
+ error = -ENOMEM;
+ goto error_input;
+ }
+ input_set_drvdata(kp->input_dev, kp);
+
+ kp->input_dev->name = pdev->name;
+ kp->input_dev->dev.parent = &pdev->dev;
+ kp->input_dev->open = keypad_start;
+ kp->input_dev->close = keypad_stop;
+ kp->input_dev->evbit[0] = BIT_MASK(EV_KEY);
+ if (!pdata->no_autorepeat)
+ kp->input_dev->evbit[0] |= BIT_MASK(EV_REP);
+
+ clk_enable(kp->clk);
+ rev = keypad_read(kp, rev);
+ kp->input_dev->id.bustype = BUS_HOST;
+ kp->input_dev->id.product = ((rev >> 8) & 0x07);
+ kp->input_dev->id.version = ((rev >> 16) & 0xfff);
+ clk_disable(kp->clk);
+
+ kp->input_dev->keycode = kp->keycodes;
+ kp->input_dev->keycodesize = sizeof(kp->keycodes[0]);
+ kp->input_dev->keycodemax = kp->rows << kp->row_shift;
+
+ matrix_keypad_build_keymap(keymap_data, kp->row_shift, kp->keycodes,
+ kp->input_dev->keybit);
+
+ input_set_capability(kp->input_dev, EV_MSC, MSC_SCAN);
+
+ error = input_register_device(kp->input_dev);
+ if (error < 0) {
+ dev_err(dev, "Could not register input device\n");
+ goto error_reg;
+ }
+
+ return 0;
+
+
+error_reg:
+ input_free_device(kp->input_dev);
+error_input:
+ free_irq(kp->irq_release, kp);
+error_irq_release:
+ free_irq(kp->irq_press, kp);
+error_irq_press:
+ clk_put(kp->clk);
+error_clk:
+ iounmap(kp->regs);
+error_map:
+ release_mem_region(kp->res->start, resource_size(kp->res));
+error_res:
+ platform_set_drvdata(pdev, NULL);
+ kfree(kp);
+ return error;
+}
+
+static int __devexit keypad_remove(struct platform_device *pdev)
+{
+ struct keypad_data *kp = platform_get_drvdata(pdev);
+
+ free_irq(kp->irq_press, kp);
+ free_irq(kp->irq_release, kp);
+ input_unregister_device(kp->input_dev);
+ clk_put(kp->clk);
+ iounmap(kp->regs);
+ release_mem_region(kp->res->start, resource_size(kp->res));
+ platform_set_drvdata(pdev, NULL);
+ kfree(kp);
+
+ return 0;
+}
+
+static struct platform_driver keypad_driver = {
+ .probe = keypad_probe,
+ .remove = __devexit_p(keypad_remove),
+ .driver.name = "tnetv107x-keypad",
+ .driver.owner = THIS_MODULE,
+};
+
+static int __init keypad_init(void)
+{
+ return platform_driver_register(&keypad_driver);
+}
+
+static void __exit keypad_exit(void)
+{
+ platform_driver_unregister(&keypad_driver);
+}
+
+module_init(keypad_init);
+module_exit(keypad_exit);
+
+MODULE_AUTHOR("Cyril Chemparathy");
+MODULE_DESCRIPTION("TNETV107X Keypad Driver");
+MODULE_ALIAS("platform: tnetv107x-keypad");
+MODULE_LICENSE("GPL");
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v4 2/5] davinci: add tnetv107x keypad platform device
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 1/5] input: add driver for tnetv107x on-chip keypad controller Cyril Chemparathy
@ 2010-09-20 16:26 ` Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 3/5] davinci: add keypad config for tnetv107x evm board Cyril Chemparathy
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Cyril Chemparathy @ 2010-09-20 16:26 UTC (permalink / raw)
To: linux-input, davinci-linux-open-source
Cc: shubhrajyoti, dmitry.torokhov, khilman, Cyril Chemparathy
This patch adds a platform device definition for tnetv107x's keypad
controller.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
---
arch/arm/mach-davinci/devices-tnetv107x.c | 30 ++++++++++++++++++++++++
arch/arm/mach-davinci/include/mach/tnetv107x.h | 3 ++
2 files changed, 33 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/devices-tnetv107x.c b/arch/arm/mach-davinci/devices-tnetv107x.c
index 2718a3a..086269f 100644
--- a/arch/arm/mach-davinci/devices-tnetv107x.c
+++ b/arch/arm/mach-davinci/devices-tnetv107x.c
@@ -33,6 +33,7 @@
#define TNETV107X_WDOG_BASE 0x08086700
#define TNETV107X_SDIO0_BASE 0x08088700
#define TNETV107X_SDIO1_BASE 0x08088800
+#define TNETV107X_KEYPAD_BASE 0x08088a00
#define TNETV107X_ASYNC_EMIF_CNTRL_BASE 0x08200000
#define TNETV107X_ASYNC_EMIF_DATA_CE0_BASE 0x30000000
#define TNETV107X_ASYNC_EMIF_DATA_CE1_BASE 0x40000000
@@ -298,6 +299,30 @@ static int __init nand_init(int chipsel, struct davinci_nand_pdata *data)
return platform_device_register(pdev);
}
+static struct resource keypad_resources[] = {
+ {
+ .start = TNETV107X_KEYPAD_BASE,
+ .end = TNETV107X_KEYPAD_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TNETV107X_KEYPAD,
+ .flags = IORESOURCE_IRQ,
+ .name = "press",
+ },
+ {
+ .start = IRQ_TNETV107X_KEYPAD_FREE,
+ .flags = IORESOURCE_IRQ,
+ .name = "release",
+ },
+};
+
+static struct platform_device keypad_device = {
+ .name = "tnetv107x-keypad",
+ .num_resources = ARRAY_SIZE(keypad_resources),
+ .resource = keypad_resources,
+};
+
void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
{
int i;
@@ -317,4 +342,9 @@ void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
for (i = 0; i < 4; i++)
if (info->nand_config[i])
nand_init(i, info->nand_config[i]);
+
+ if (info->keypad_config) {
+ keypad_device.dev.platform_data = info->keypad_config;
+ platform_device_register(&keypad_device);
+ }
}
diff --git a/arch/arm/mach-davinci/include/mach/tnetv107x.h b/arch/arm/mach-davinci/include/mach/tnetv107x.h
index c720647..5a681d8 100644
--- a/arch/arm/mach-davinci/include/mach/tnetv107x.h
+++ b/arch/arm/mach-davinci/include/mach/tnetv107x.h
@@ -33,6 +33,8 @@
#ifndef __ASSEMBLY__
#include <linux/serial_8250.h>
+#include <linux/input/matrix_keypad.h>
+
#include <mach/mmc.h>
#include <mach/nand.h>
#include <mach/serial.h>
@@ -41,6 +43,7 @@ struct tnetv107x_device_info {
struct davinci_uart_config *serial_config;
struct davinci_mmc_config *mmc_config[2]; /* 2 controllers */
struct davinci_nand_pdata *nand_config[4]; /* 4 chipsels */
+ struct matrix_keypad_platform_data *keypad_config;
};
extern struct platform_device tnetv107x_wdt_device;
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v4 3/5] davinci: add keypad config for tnetv107x evm board
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 1/5] input: add driver for tnetv107x on-chip keypad controller Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 2/5] davinci: add tnetv107x keypad platform device Cyril Chemparathy
@ 2010-09-20 16:26 ` Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 4/5] input: add driver for tnetv107x touchscreen controller Cyril Chemparathy
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Cyril Chemparathy @ 2010-09-20 16:26 UTC (permalink / raw)
To: linux-input, davinci-linux-open-source
Cc: shubhrajyoti, dmitry.torokhov, khilman, Cyril Chemparathy
This patch adds evm board specific keymap definitions and controller
configuration data for on-chip keypad controller on tnetv107x silicon.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
---
arch/arm/mach-davinci/board-tnetv107x-evm.c | 56 +++++++++++++++++++++++++++
1 files changed, 56 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/board-tnetv107x-evm.c b/arch/arm/mach-davinci/board-tnetv107x-evm.c
index fe2a9d9..5afa8fc 100644
--- a/arch/arm/mach-davinci/board-tnetv107x-evm.c
+++ b/arch/arm/mach-davinci/board-tnetv107x-evm.c
@@ -23,6 +23,9 @@
#include <linux/ratelimit.h>
#include <linux/mtd/mtd.h>
#include <linux/mtd/partitions.h>
+#include <linux/input.h>
+#include <linux/input/matrix_keypad.h>
+
#include <asm/mach/arch.h>
#include <asm/mach-types.h>
@@ -141,10 +144,63 @@ static struct davinci_uart_config serial_config __initconst = {
.enabled_uarts = BIT(1),
};
+static const uint32_t keymap[] = {
+ KEY(0, 0, KEY_NUMERIC_1),
+ KEY(0, 1, KEY_NUMERIC_2),
+ KEY(0, 2, KEY_NUMERIC_3),
+ KEY(0, 3, KEY_FN_F1),
+ KEY(0, 4, KEY_MENU),
+
+ KEY(1, 0, KEY_NUMERIC_4),
+ KEY(1, 1, KEY_NUMERIC_5),
+ KEY(1, 2, KEY_NUMERIC_6),
+ KEY(1, 3, KEY_UP),
+ KEY(1, 4, KEY_FN_F2),
+
+ KEY(2, 0, KEY_NUMERIC_7),
+ KEY(2, 1, KEY_NUMERIC_8),
+ KEY(2, 2, KEY_NUMERIC_9),
+ KEY(2, 3, KEY_LEFT),
+ KEY(2, 4, KEY_ENTER),
+
+ KEY(3, 0, KEY_NUMERIC_STAR),
+ KEY(3, 1, KEY_NUMERIC_0),
+ KEY(3, 2, KEY_NUMERIC_POUND),
+ KEY(3, 3, KEY_DOWN),
+ KEY(3, 4, KEY_RIGHT),
+
+ KEY(4, 0, KEY_FN_F3),
+ KEY(4, 1, KEY_FN_F4),
+ KEY(4, 2, KEY_MUTE),
+ KEY(4, 3, KEY_HOME),
+ KEY(4, 4, KEY_BACK),
+
+ KEY(5, 0, KEY_VOLUMEDOWN),
+ KEY(5, 1, KEY_VOLUMEUP),
+ KEY(5, 2, KEY_F1),
+ KEY(5, 3, KEY_F2),
+ KEY(5, 4, KEY_F3),
+};
+
+static const struct matrix_keymap_data keymap_data = {
+ .keymap = keymap,
+ .keymap_size = ARRAY_SIZE(keymap),
+};
+
+static struct matrix_keypad_platform_data keypad_config = {
+ .keymap_data = &keymap_data,
+ .num_row_gpios = 6,
+ .num_col_gpios = 5,
+ .debounce_ms = 0, /* minimum */
+ .active_low = 0, /* pull up realization */
+ .no_autorepeat = 0,
+};
+
static struct tnetv107x_device_info evm_device_info __initconst = {
.serial_config = &serial_config,
.mmc_config[1] = &mmc_config, /* controller 1 */
.nand_config[0] = &nand_config, /* chip select 0 */
+ .keypad_config = &keypad_config,
};
static __init void tnetv107x_evm_board_init(void)
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v4 4/5] input: add driver for tnetv107x touchscreen controller
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
` (2 preceding siblings ...)
2010-09-20 16:26 ` [PATCH v4 3/5] davinci: add keypad config for tnetv107x evm board Cyril Chemparathy
@ 2010-09-20 16:26 ` Cyril Chemparathy
2010-09-20 16:26 ` [PATCH v4 5/5] davinci: add tnetv107x touchscreen platform device Cyril Chemparathy
2010-09-20 19:35 ` [PATCH v4 0/5] add tnetv107x input drivers Kevin Hilman
5 siblings, 0 replies; 7+ messages in thread
From: Cyril Chemparathy @ 2010-09-20 16:26 UTC (permalink / raw)
To: linux-input, davinci-linux-open-source
Cc: shubhrajyoti, dmitry.torokhov, khilman, Cyril Chemparathy
This patch adds support for tnetv107x's on-chip touchscreen controller.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
Acked-by: Dmitry Torokhov <dtor@mail.ru>
---
drivers/input/touchscreen/Kconfig | 9 +
drivers/input/touchscreen/Makefile | 1 +
drivers/input/touchscreen/tnetv107x-ts.c | 396 ++++++++++++++++++++++++++++++
3 files changed, 406 insertions(+), 0 deletions(-)
create mode 100644 drivers/input/touchscreen/tnetv107x-ts.c
diff --git a/drivers/input/touchscreen/Kconfig b/drivers/input/touchscreen/Kconfig
index 0069d97..8d32028 100644
--- a/drivers/input/touchscreen/Kconfig
+++ b/drivers/input/touchscreen/Kconfig
@@ -328,6 +328,15 @@ config TOUCHSCREEN_MIGOR
To compile this driver as a module, choose M here: the
module will be called migor_ts.
+config TOUCHSCREEN_TNETV107X
+ tristate "TI TNETV107X touchscreen support"
+ depends on ARCH_DAVINCI_TNETV107X
+ help
+ Say Y here if you want to use the TNETV107X touchscreen.
+
+ To compile this driver as a module, choose M here: the
+ module will be called tnetv107x-ts.
+
config TOUCHSCREEN_TOUCHRIGHT
tristate "Touchright serial touchscreen"
select SERIO
diff --git a/drivers/input/touchscreen/Makefile b/drivers/input/touchscreen/Makefile
index 28217e1..d41a964 100644
--- a/drivers/input/touchscreen/Makefile
+++ b/drivers/input/touchscreen/Makefile
@@ -37,6 +37,7 @@ obj-$(CONFIG_TOUCHSCREEN_PENMOUNT) += penmount.o
obj-$(CONFIG_TOUCHSCREEN_QT602240) += qt602240_ts.o
obj-$(CONFIG_TOUCHSCREEN_S3C2410) += s3c2410_ts.o
obj-$(CONFIG_TOUCHSCREEN_STMPE) += stmpe-ts.o
+obj-$(CONFIG_TOUCHSCREEN_TNETV107X) += tnetv107x-ts.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHIT213) += touchit213.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHRIGHT) += touchright.o
obj-$(CONFIG_TOUCHSCREEN_TOUCHWIN) += touchwin.o
diff --git a/drivers/input/touchscreen/tnetv107x-ts.c b/drivers/input/touchscreen/tnetv107x-ts.c
new file mode 100644
index 0000000..cf1dba2
--- /dev/null
+++ b/drivers/input/touchscreen/tnetv107x-ts.c
@@ -0,0 +1,396 @@
+/*
+ * Texas Instruments TNETV107X Touchscreen Driver
+ *
+ * Copyright (C) 2010 Texas Instruments
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/kernel.h>
+#include <linux/errno.h>
+#include <linux/input.h>
+#include <linux/platform_device.h>
+#include <linux/interrupt.h>
+#include <linux/slab.h>
+#include <linux/delay.h>
+#include <linux/ctype.h>
+#include <linux/io.h>
+#include <linux/clk.h>
+
+#include <mach/tnetv107x.h>
+
+#define TSC_PENUP_POLL (HZ / 5)
+#define IDLE_TIMEOUT 100 /* msec */
+
+/*
+ * The first and last samples of a touch interval are usually garbage and need
+ * to be filtered out with these devices. The following definitions control
+ * the number of samples skipped.
+ */
+#define TSC_HEAD_SKIP 1
+#define TSC_TAIL_SKIP 1
+#define TSC_SKIP (TSC_HEAD_SKIP + TSC_TAIL_SKIP + 1)
+#define TSC_SAMPLES (TSC_SKIP + 1)
+
+/* Register Offsets */
+struct tsc_regs {
+ u32 rev;
+ u32 tscm;
+ u32 bwcm;
+ u32 swc;
+ u32 adcchnl;
+ u32 adcdata;
+ u32 chval[4];
+};
+
+/* TSC Mode Configuration Register (tscm) bits */
+#define WMODE BIT(0)
+#define TSKIND BIT(1)
+#define ZMEASURE_EN BIT(2)
+#define IDLE BIT(3)
+#define TSC_EN BIT(4)
+#define STOP BIT(5)
+#define ONE_SHOT BIT(6)
+#define SINGLE BIT(7)
+#define AVG BIT(8)
+#define AVGNUM(x) (((x) & 0x03) << 9)
+#define PVSTC(x) (((x) & 0x07) << 11)
+#define PON BIT(14)
+#define PONBG BIT(15)
+#define AFERST BIT(16)
+
+/* ADC DATA Capture Register bits */
+#define DATA_VALID BIT(16)
+
+/* Register Access Macros */
+#define tsc_read(ts, reg) __raw_readl(&(ts)->regs->reg)
+#define tsc_write(ts, reg, val) __raw_writel(val, &(ts)->regs->reg);
+#define tsc_set_bits(ts, reg, val) \
+ tsc_write(ts, reg, tsc_read(ts, reg) | (val))
+#define tsc_clr_bits(ts, reg, val) \
+ tsc_write(ts, reg, tsc_read(ts, reg) & ~(val))
+
+struct sample {
+ int x, y, p;
+};
+
+struct tsc_data {
+ struct input_dev *input_dev;
+ struct resource *res;
+ struct tsc_regs __iomem *regs;
+ struct timer_list timer;
+ spinlock_t lock;
+ struct clk *clk;
+ struct device *dev;
+ int sample_count;
+ struct sample samples[TSC_SAMPLES];
+ int tsc_irq;
+};
+
+static int tsc_read_sample(struct tsc_data *ts, struct sample* sample)
+{
+ int x, y, z1, z2, t, p = 0;
+ u32 val;
+
+ val = tsc_read(ts, chval[0]);
+ if (val & DATA_VALID)
+ x = val & 0xffff;
+ else
+ return -EINVAL;
+
+ y = tsc_read(ts, chval[1]) & 0xffff;
+ z1 = tsc_read(ts, chval[2]) & 0xffff;
+ z2 = tsc_read(ts, chval[3]) & 0xffff;
+
+ if (z1) {
+ t = ((600 * x) * (z2 - z1));
+ p = t / (u32) (z1 << 12);
+ if (p < 0)
+ p = 0;
+ }
+
+ sample->x = x;
+ sample->y = y;
+ sample->p = p;
+
+ return 0;
+}
+
+static void tsc_poll(unsigned long data)
+{
+ struct tsc_data *ts = (struct tsc_data *)data;
+ unsigned long flags;
+ int i, val, x, y, p;
+
+ spin_lock_irqsave(&ts->lock, flags);
+
+ if (ts->sample_count >= TSC_SKIP) {
+ input_report_abs(ts->input_dev, ABS_PRESSURE, 0);
+ input_report_key(ts->input_dev, BTN_TOUCH, 0);
+ input_sync(ts->input_dev);
+ } else if (ts->sample_count > 0) {
+ /*
+ * A touch event lasted less than our skip count. Salvage and
+ * report anyway.
+ */
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].x;
+ x = val / ts->sample_count;
+
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].y;
+ y = val / ts->sample_count;
+
+ for (i = 0, val = 0; i < ts->sample_count; i++)
+ val += ts->samples[i].p;
+ p = val / ts->sample_count;
+
+ input_report_abs(ts->input_dev, ABS_X, x);
+ input_report_abs(ts->input_dev, ABS_Y, y);
+ input_report_abs(ts->input_dev, ABS_PRESSURE, p);
+ input_report_key(ts->input_dev, BTN_TOUCH, 1);
+ input_sync(ts->input_dev);
+ }
+
+ ts->sample_count = 0;
+
+ spin_unlock_irqrestore(&ts->lock, flags);
+}
+
+static irqreturn_t tsc_irq(int irq, void *dev_id)
+{
+ struct tsc_data *ts = (struct tsc_data *)dev_id;
+ struct sample *sample;
+ int index;
+
+ spin_lock(&ts->lock);
+
+ index = ts->sample_count % TSC_SAMPLES;
+ sample = &ts->samples[index];
+ if (tsc_read_sample(ts, sample) < 0)
+ goto out;
+
+ if (++ts->sample_count >= TSC_SKIP) {
+ index = (ts->sample_count - TSC_TAIL_SKIP - 1) % TSC_SAMPLES;
+ sample = &ts->samples[index];
+
+ input_report_abs(ts->input_dev, ABS_X, sample->x);
+ input_report_abs(ts->input_dev, ABS_Y, sample->y);
+ input_report_abs(ts->input_dev, ABS_PRESSURE, sample->p);
+ if (ts->sample_count == TSC_SKIP)
+ input_report_key(ts->input_dev, BTN_TOUCH, 1);
+ input_sync(ts->input_dev);
+ }
+ mod_timer(&ts->timer, jiffies + TSC_PENUP_POLL);
+out:
+ spin_unlock(&ts->lock);
+ return IRQ_HANDLED;
+}
+
+static int tsc_start(struct input_dev *dev)
+{
+ struct tsc_data *ts = input_get_drvdata(dev);
+ unsigned long timeout = jiffies + msecs_to_jiffies(IDLE_TIMEOUT);
+ u32 val;
+
+ clk_enable(ts->clk);
+
+ /* Go to idle mode, before any initialization */
+ while (time_after(timeout, jiffies)) {
+ if (tsc_read(ts, tscm) & IDLE)
+ break;
+ }
+
+ if (time_before(timeout, jiffies)) {
+ dev_warn(ts->dev, "timeout waiting for idle\n");
+ clk_disable(ts->clk);
+ return -EIO;
+ }
+
+ /* Configure TSC Control register*/
+ val = (PONBG | PON | PVSTC(4) | ONE_SHOT | ZMEASURE_EN);
+ tsc_write(ts, tscm, val);
+
+ /* Bring TSC out of reset: Clear AFE reset bit */
+ val &= ~(AFERST);
+ tsc_write(ts, tscm, val);
+
+ /* Configure all pins for hardware control*/
+ tsc_write(ts, bwcm, 0);
+
+ /* Finally enable the TSC */
+ tsc_set_bits(ts, tscm, TSC_EN);
+
+ return 0;
+}
+
+static void tsc_stop(struct input_dev *dev)
+{
+ struct tsc_data *ts = input_get_drvdata(dev);
+
+ tsc_clr_bits(ts, tscm, TSC_EN);
+ synchronize_irq(ts->tsc_irq);
+ del_timer_sync(&ts->timer);
+ clk_disable(ts->clk);
+}
+
+static int __devinit tsc_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ struct tsc_data *ts;
+ int error = 0;
+ u32 rev = 0;
+
+ ts = kzalloc(sizeof(struct tsc_data), GFP_KERNEL);
+ if (!ts) {
+ dev_err(dev, "cannot allocate device info\n");
+ return -ENOMEM;
+ }
+
+ ts->dev = dev;
+ spin_lock_init(&ts->lock);
+ setup_timer(&ts->timer, tsc_poll, (unsigned long)ts);
+ platform_set_drvdata(pdev, ts);
+
+ ts->tsc_irq = platform_get_irq(pdev, 0);
+ if (ts->tsc_irq < 0) {
+ dev_err(dev, "cannot determine device interrupt\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ ts->res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!ts->res) {
+ dev_err(dev, "cannot determine register area\n");
+ error = -ENODEV;
+ goto error_res;
+ }
+
+ if (!request_mem_region(ts->res->start, resource_size(ts->res),
+ pdev->name)) {
+ dev_err(dev, "cannot claim register memory\n");
+ ts->res = NULL;
+ error = -EINVAL;
+ goto error_res;
+ }
+
+ ts->regs = ioremap(ts->res->start, resource_size(ts->res));
+ if (!ts->regs) {
+ dev_err(dev, "cannot map register memory\n");
+ error = -ENOMEM;
+ goto error_map;
+ }
+
+ ts->clk = clk_get(dev, NULL);
+ if (!ts->clk) {
+ dev_err(dev, "cannot claim device clock\n");
+ error = -EINVAL;
+ goto error_clk;
+ }
+
+ error = request_threaded_irq(ts->tsc_irq, NULL, tsc_irq, 0,
+ dev_name(dev), ts);
+ if (error < 0) {
+ dev_err(ts->dev, "Could not allocate ts irq\n");
+ goto error_irq;
+ }
+
+ ts->input_dev = input_allocate_device();
+ if (!ts->input_dev) {
+ dev_err(dev, "cannot allocate input device\n");
+ error = -ENOMEM;
+ goto error_input;
+ }
+ input_set_drvdata(ts->input_dev, ts);
+
+ ts->input_dev->name = pdev->name;
+ ts->input_dev->id.bustype = BUS_HOST;
+ ts->input_dev->dev.parent = &pdev->dev;
+ ts->input_dev->open = tsc_start;
+ ts->input_dev->close = tsc_stop;
+
+ clk_enable(ts->clk);
+ rev = tsc_read(ts, rev);
+ ts->input_dev->id.product = ((rev >> 8) & 0x07);
+ ts->input_dev->id.version = ((rev >> 16) & 0xfff);
+ clk_disable(ts->clk);
+
+ __set_bit(EV_KEY, ts->input_dev->evbit);
+ __set_bit(EV_ABS, ts->input_dev->evbit);
+ __set_bit(BTN_TOUCH, ts->input_dev->keybit);
+
+ input_set_abs_params(ts->input_dev, ABS_X, 0, 0xffff, 5, 0);
+ input_set_abs_params(ts->input_dev, ABS_Y, 0, 0xffff, 5, 0);
+ input_set_abs_params(ts->input_dev, ABS_PRESSURE, 0, 4095, 128, 0);
+
+ error = input_register_device(ts->input_dev);
+ if (error < 0) {
+ dev_err(dev, "failed input device registration\n");
+ goto error_reg;
+ }
+
+ return 0;
+
+error_reg:
+ input_free_device(ts->input_dev);
+error_input:
+ free_irq(ts->tsc_irq, ts);
+error_irq:
+ clk_put(ts->clk);
+error_clk:
+ iounmap(ts->regs);
+error_map:
+ release_mem_region(ts->res->start, resource_size(ts->res));
+error_res:
+ platform_set_drvdata(pdev, NULL);
+ kfree(ts);
+
+ return error;
+}
+
+static int __devexit tsc_remove(struct platform_device *pdev)
+{
+ struct tsc_data *ts = platform_get_drvdata(pdev);
+
+ input_unregister_device(ts->input_dev);
+ free_irq(ts->tsc_irq, ts);
+ clk_put(ts->clk);
+ iounmap(ts->regs);
+ release_mem_region(ts->res->start, resource_size(ts->res));
+ platform_set_drvdata(pdev, NULL);
+ kfree(ts);
+
+ return 0;
+}
+
+static struct platform_driver tsc_driver = {
+ .probe = tsc_probe,
+ .remove = __devexit_p(tsc_remove),
+ .driver.name = "tnetv107x-ts",
+ .driver.owner = THIS_MODULE,
+};
+
+static int __init tsc_init(void)
+{
+ return platform_driver_register(&tsc_driver);
+}
+
+static void __exit tsc_exit(void)
+{
+ platform_driver_unregister(&tsc_driver);
+}
+
+module_init(tsc_init);
+module_exit(tsc_exit);
+
+MODULE_AUTHOR("Cyril Chemparathy");
+MODULE_DESCRIPTION("TNETV107X Touchscreen Driver");
+MODULE_ALIAS("platform: tnetv107x-ts");
+MODULE_LICENSE("GPL");
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH v4 5/5] davinci: add tnetv107x touchscreen platform device
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
` (3 preceding siblings ...)
2010-09-20 16:26 ` [PATCH v4 4/5] input: add driver for tnetv107x touchscreen controller Cyril Chemparathy
@ 2010-09-20 16:26 ` Cyril Chemparathy
2010-09-20 19:35 ` [PATCH v4 0/5] add tnetv107x input drivers Kevin Hilman
5 siblings, 0 replies; 7+ messages in thread
From: Cyril Chemparathy @ 2010-09-20 16:26 UTC (permalink / raw)
To: linux-input, davinci-linux-open-source
Cc: shubhrajyoti, dmitry.torokhov, khilman, Cyril Chemparathy
This patch adds a platform device definition for tnetv107x's touchscreen
controller.
Signed-off-by: Cyril Chemparathy <cyril@ti.com>
---
arch/arm/mach-davinci/devices-tnetv107x.c | 20 ++++++++++++++++++++
1 files changed, 20 insertions(+), 0 deletions(-)
diff --git a/arch/arm/mach-davinci/devices-tnetv107x.c b/arch/arm/mach-davinci/devices-tnetv107x.c
index 086269f..c9a86d8 100644
--- a/arch/arm/mach-davinci/devices-tnetv107x.c
+++ b/arch/arm/mach-davinci/devices-tnetv107x.c
@@ -31,6 +31,7 @@
#define TNETV107X_TPTC0_BASE 0x01c10000
#define TNETV107X_TPTC1_BASE 0x01c10400
#define TNETV107X_WDOG_BASE 0x08086700
+#define TNETV107X_TSC_BASE 0x08088500
#define TNETV107X_SDIO0_BASE 0x08088700
#define TNETV107X_SDIO1_BASE 0x08088800
#define TNETV107X_KEYPAD_BASE 0x08088a00
@@ -323,12 +324,31 @@ static struct platform_device keypad_device = {
.resource = keypad_resources,
};
+static struct resource tsc_resources[] = {
+ {
+ .start = TNETV107X_TSC_BASE,
+ .end = TNETV107X_TSC_BASE + 0xff,
+ .flags = IORESOURCE_MEM,
+ },
+ {
+ .start = IRQ_TNETV107X_TSC,
+ .flags = IORESOURCE_IRQ,
+ },
+};
+
+static struct platform_device tsc_device = {
+ .name = "tnetv107x-ts",
+ .num_resources = ARRAY_SIZE(tsc_resources),
+ .resource = tsc_resources,
+};
+
void __init tnetv107x_devices_init(struct tnetv107x_device_info *info)
{
int i;
platform_device_register(&edma_device);
platform_device_register(&tnetv107x_wdt_device);
+ platform_device_register(&tsc_device);
if (info->serial_config)
davinci_serial_init(info->serial_config);
--
1.7.0.4
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v4 0/5] add tnetv107x input drivers
2010-09-20 16:26 [PATCH v4 0/5] add tnetv107x input drivers Cyril Chemparathy
` (4 preceding siblings ...)
2010-09-20 16:26 ` [PATCH v4 5/5] davinci: add tnetv107x touchscreen platform device Cyril Chemparathy
@ 2010-09-20 19:35 ` Kevin Hilman
5 siblings, 0 replies; 7+ messages in thread
From: Kevin Hilman @ 2010-09-20 19:35 UTC (permalink / raw)
To: Cyril Chemparathy
Cc: linux-input, davinci-linux-open-source, shubhrajyoti,
dmitry.torokhov
Cyril Chemparathy <cyril@ti.com> writes:
> Texas Instruments' TNETV107X is an ARM1176 based SoC, with on-chip
> touchscreen and keypad controllers. This patch series adds drivers for these
> controllers.
>
> Changes between v1 and v2:
> 1. Cleaned up platform data needs by reusing matrix keypad pdata
> 2. Eliminated calibration code from touch driver
> 3. Relocated h/w init code to open and close
> 4. Other minor cleanups
>
> Changes between v2 and v3:
> 1. Merged keycodes alloc into keypad data
> 2. Moved irq hookup to probe from open
> 3. Other minor cleanups
>
> Changes between v3 and v4:
> 1. Locking between hardirqs for keypad driver
>
> Cyril Chemparathy (5):
> input: add driver for tnetv107x on-chip keypad controller
> davinci: add tnetv107x keypad platform device
> davinci: add keypad config for tnetv107x evm board
> input: add driver for tnetv107x touchscreen controller
> davinci: add tnetv107x touchscreen platform device
Thanks, queuing this series for 2.6.37 in davinci-next.
Kevin
> arch/arm/mach-davinci/board-tnetv107x-evm.c | 56 ++++
> arch/arm/mach-davinci/devices-tnetv107x.c | 50 +++
> arch/arm/mach-davinci/include/mach/tnetv107x.h | 3 +
> drivers/input/keyboard/Kconfig | 9 +
> drivers/input/keyboard/Makefile | 1 +
> drivers/input/keyboard/tnetv107x-keypad.c | 340 ++++++++++++++++++++
> drivers/input/touchscreen/Kconfig | 9 +
> drivers/input/touchscreen/Makefile | 1 +
> drivers/input/touchscreen/tnetv107x-ts.c | 396 ++++++++++++++++++++++++
> 9 files changed, 865 insertions(+), 0 deletions(-)
> create mode 100644 drivers/input/keyboard/tnetv107x-keypad.c
> create mode 100644 drivers/input/touchscreen/tnetv107x-ts.c
^ permalink raw reply [flat|nested] 7+ messages in thread