diff options
Diffstat (limited to 'ANDROID_3.4.5/drivers/input/keyboard/pxa27x_keypad.c')
| -rw-r--r-- | ANDROID_3.4.5/drivers/input/keyboard/pxa27x_keypad.c | 608 |
1 files changed, 0 insertions, 608 deletions
diff --git a/ANDROID_3.4.5/drivers/input/keyboard/pxa27x_keypad.c b/ANDROID_3.4.5/drivers/input/keyboard/pxa27x_keypad.c deleted file mode 100644 index 29fe1b2b..00000000 --- a/ANDROID_3.4.5/drivers/input/keyboard/pxa27x_keypad.c +++ /dev/null @@ -1,608 +0,0 @@ -/* - * linux/drivers/input/keyboard/pxa27x_keypad.c - * - * Driver for the pxa27x matrix keyboard controller. - * - * Created: Feb 22, 2007 - * Author: Rodolfo Giometti <giometti@linux.it> - * - * Based on a previous implementations by Kevin O'Connor - * <kevin_at_koconnor.net> and Alex Osborne <bobofdoom@gmail.com> and - * on some suggestions by Nicolas Pitre <nico@fluxnic.net>. - * - * 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/module.h> -#include <linux/init.h> -#include <linux/interrupt.h> -#include <linux/input.h> -#include <linux/device.h> -#include <linux/platform_device.h> -#include <linux/clk.h> -#include <linux/err.h> -#include <linux/input/matrix_keypad.h> -#include <linux/slab.h> - -#include <asm/mach/arch.h> -#include <asm/mach/map.h> - -#include <mach/hardware.h> -#include <plat/pxa27x_keypad.h> -/* - * Keypad Controller registers - */ -#define KPC 0x0000 /* Keypad Control register */ -#define KPDK 0x0008 /* Keypad Direct Key register */ -#define KPREC 0x0010 /* Keypad Rotary Encoder register */ -#define KPMK 0x0018 /* Keypad Matrix Key register */ -#define KPAS 0x0020 /* Keypad Automatic Scan register */ - -/* Keypad Automatic Scan Multiple Key Presser register 0-3 */ -#define KPASMKP0 0x0028 -#define KPASMKP1 0x0030 -#define KPASMKP2 0x0038 -#define KPASMKP3 0x0040 -#define KPKDI 0x0048 - -/* bit definitions */ -#define KPC_MKRN(n) ((((n) - 1) & 0x7) << 26) /* matrix key row number */ -#define KPC_MKCN(n) ((((n) - 1) & 0x7) << 23) /* matrix key column number */ -#define KPC_DKN(n) ((((n) - 1) & 0x7) << 6) /* direct key number */ - -#define KPC_AS (0x1 << 30) /* Automatic Scan bit */ -#define KPC_ASACT (0x1 << 29) /* Automatic Scan on Activity */ -#define KPC_MI (0x1 << 22) /* Matrix interrupt bit */ -#define KPC_IMKP (0x1 << 21) /* Ignore Multiple Key Press */ - -#define KPC_MS(n) (0x1 << (13 + (n))) /* Matrix scan line 'n' */ -#define KPC_MS_ALL (0xff << 13) - -#define KPC_ME (0x1 << 12) /* Matrix Keypad Enable */ -#define KPC_MIE (0x1 << 11) /* Matrix Interrupt Enable */ -#define KPC_DK_DEB_SEL (0x1 << 9) /* Direct Keypad Debounce Select */ -#define KPC_DI (0x1 << 5) /* Direct key interrupt bit */ -#define KPC_RE_ZERO_DEB (0x1 << 4) /* Rotary Encoder Zero Debounce */ -#define KPC_REE1 (0x1 << 3) /* Rotary Encoder1 Enable */ -#define KPC_REE0 (0x1 << 2) /* Rotary Encoder0 Enable */ -#define KPC_DE (0x1 << 1) /* Direct Keypad Enable */ -#define KPC_DIE (0x1 << 0) /* Direct Keypad interrupt Enable */ - -#define KPDK_DKP (0x1 << 31) -#define KPDK_DK(n) ((n) & 0xff) - -#define KPREC_OF1 (0x1 << 31) -#define kPREC_UF1 (0x1 << 30) -#define KPREC_OF0 (0x1 << 15) -#define KPREC_UF0 (0x1 << 14) - -#define KPREC_RECOUNT0(n) ((n) & 0xff) -#define KPREC_RECOUNT1(n) (((n) >> 16) & 0xff) - -#define KPMK_MKP (0x1 << 31) -#define KPAS_SO (0x1 << 31) -#define KPASMKPx_SO (0x1 << 31) - -#define KPAS_MUKP(n) (((n) >> 26) & 0x1f) -#define KPAS_RP(n) (((n) >> 4) & 0xf) -#define KPAS_CP(n) ((n) & 0xf) - -#define KPASMKP_MKC_MASK (0xff) - -#define keypad_readl(off) __raw_readl(keypad->mmio_base + (off)) -#define keypad_writel(off, v) __raw_writel((v), keypad->mmio_base + (off)) - -#define MAX_MATRIX_KEY_NUM (MAX_MATRIX_KEY_ROWS * MAX_MATRIX_KEY_COLS) -#define MAX_KEYPAD_KEYS (MAX_MATRIX_KEY_NUM + MAX_DIRECT_KEY_NUM) - -struct pxa27x_keypad { - struct pxa27x_keypad_platform_data *pdata; - - struct clk *clk; - struct input_dev *input_dev; - void __iomem *mmio_base; - - int irq; - - unsigned short keycodes[MAX_KEYPAD_KEYS]; - int rotary_rel_code[2]; - - /* state row bits of each column scan */ - uint32_t matrix_key_state[MAX_MATRIX_KEY_COLS]; - uint32_t direct_key_state; - - unsigned int direct_key_mask; -}; - -static void pxa27x_keypad_build_keycode(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - struct input_dev *input_dev = keypad->input_dev; - unsigned short keycode; - int i; - - for (i = 0; i < pdata->matrix_key_map_size; i++) { - unsigned int key = pdata->matrix_key_map[i]; - unsigned int row = KEY_ROW(key); - unsigned int col = KEY_COL(key); - unsigned int scancode = MATRIX_SCAN_CODE(row, col, - MATRIX_ROW_SHIFT); - - keycode = KEY_VAL(key); - keypad->keycodes[scancode] = keycode; - __set_bit(keycode, input_dev->keybit); - } - - for (i = 0; i < pdata->direct_key_num; i++) { - keycode = pdata->direct_key_map[i]; - keypad->keycodes[MAX_MATRIX_KEY_NUM + i] = keycode; - __set_bit(keycode, input_dev->keybit); - } - - if (pdata->enable_rotary0) { - if (pdata->rotary0_up_key && pdata->rotary0_down_key) { - keycode = pdata->rotary0_up_key; - keypad->keycodes[MAX_MATRIX_KEY_NUM + 0] = keycode; - __set_bit(keycode, input_dev->keybit); - - keycode = pdata->rotary0_down_key; - keypad->keycodes[MAX_MATRIX_KEY_NUM + 1] = keycode; - __set_bit(keycode, input_dev->keybit); - - keypad->rotary_rel_code[0] = -1; - } else { - keypad->rotary_rel_code[0] = pdata->rotary0_rel_code; - __set_bit(pdata->rotary0_rel_code, input_dev->relbit); - } - } - - if (pdata->enable_rotary1) { - if (pdata->rotary1_up_key && pdata->rotary1_down_key) { - keycode = pdata->rotary1_up_key; - keypad->keycodes[MAX_MATRIX_KEY_NUM + 2] = keycode; - __set_bit(keycode, input_dev->keybit); - - keycode = pdata->rotary1_down_key; - keypad->keycodes[MAX_MATRIX_KEY_NUM + 3] = keycode; - __set_bit(keycode, input_dev->keybit); - - keypad->rotary_rel_code[1] = -1; - } else { - keypad->rotary_rel_code[1] = pdata->rotary1_rel_code; - __set_bit(pdata->rotary1_rel_code, input_dev->relbit); - } - } - - __clear_bit(KEY_RESERVED, input_dev->keybit); -} - -static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - struct input_dev *input_dev = keypad->input_dev; - int row, col, num_keys_pressed = 0; - uint32_t new_state[MAX_MATRIX_KEY_COLS]; - uint32_t kpas = keypad_readl(KPAS); - - num_keys_pressed = KPAS_MUKP(kpas); - - memset(new_state, 0, sizeof(new_state)); - - if (num_keys_pressed == 0) - goto scan; - - if (num_keys_pressed == 1) { - col = KPAS_CP(kpas); - row = KPAS_RP(kpas); - - /* if invalid row/col, treat as no key pressed */ - if (col >= pdata->matrix_key_cols || - row >= pdata->matrix_key_rows) - goto scan; - - new_state[col] = (1 << row); - goto scan; - } - - if (num_keys_pressed > 1) { - uint32_t kpasmkp0 = keypad_readl(KPASMKP0); - uint32_t kpasmkp1 = keypad_readl(KPASMKP1); - uint32_t kpasmkp2 = keypad_readl(KPASMKP2); - uint32_t kpasmkp3 = keypad_readl(KPASMKP3); - - new_state[0] = kpasmkp0 & KPASMKP_MKC_MASK; - new_state[1] = (kpasmkp0 >> 16) & KPASMKP_MKC_MASK; - new_state[2] = kpasmkp1 & KPASMKP_MKC_MASK; - new_state[3] = (kpasmkp1 >> 16) & KPASMKP_MKC_MASK; - new_state[4] = kpasmkp2 & KPASMKP_MKC_MASK; - new_state[5] = (kpasmkp2 >> 16) & KPASMKP_MKC_MASK; - new_state[6] = kpasmkp3 & KPASMKP_MKC_MASK; - new_state[7] = (kpasmkp3 >> 16) & KPASMKP_MKC_MASK; - } -scan: - for (col = 0; col < pdata->matrix_key_cols; col++) { - uint32_t bits_changed; - int code; - - bits_changed = keypad->matrix_key_state[col] ^ new_state[col]; - if (bits_changed == 0) - continue; - - for (row = 0; row < pdata->matrix_key_rows; row++) { - if ((bits_changed & (1 << row)) == 0) - continue; - - code = MATRIX_SCAN_CODE(row, col, MATRIX_ROW_SHIFT); - input_event(input_dev, EV_MSC, MSC_SCAN, code); - input_report_key(input_dev, keypad->keycodes[code], - new_state[col] & (1 << row)); - } - } - input_sync(input_dev); - memcpy(keypad->matrix_key_state, new_state, sizeof(new_state)); -} - -#define DEFAULT_KPREC (0x007f007f) - -static inline int rotary_delta(uint32_t kprec) -{ - if (kprec & KPREC_OF0) - return (kprec & 0xff) + 0x7f; - else if (kprec & KPREC_UF0) - return (kprec & 0xff) - 0x7f - 0xff; - else - return (kprec & 0xff) - 0x7f; -} - -static void report_rotary_event(struct pxa27x_keypad *keypad, int r, int delta) -{ - struct input_dev *dev = keypad->input_dev; - - if (delta == 0) - return; - - if (keypad->rotary_rel_code[r] == -1) { - int code = MAX_MATRIX_KEY_NUM + 2 * r + (delta > 0 ? 0 : 1); - unsigned char keycode = keypad->keycodes[code]; - - /* simulate a press-n-release */ - input_event(dev, EV_MSC, MSC_SCAN, code); - input_report_key(dev, keycode, 1); - input_sync(dev); - input_event(dev, EV_MSC, MSC_SCAN, code); - input_report_key(dev, keycode, 0); - input_sync(dev); - } else { - input_report_rel(dev, keypad->rotary_rel_code[r], delta); - input_sync(dev); - } -} - -static void pxa27x_keypad_scan_rotary(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - uint32_t kprec; - - /* read and reset to default count value */ - kprec = keypad_readl(KPREC); - keypad_writel(KPREC, DEFAULT_KPREC); - - if (pdata->enable_rotary0) - report_rotary_event(keypad, 0, rotary_delta(kprec)); - - if (pdata->enable_rotary1) - report_rotary_event(keypad, 1, rotary_delta(kprec >> 16)); -} - -static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - struct input_dev *input_dev = keypad->input_dev; - unsigned int new_state; - uint32_t kpdk, bits_changed; - int i; - - kpdk = keypad_readl(KPDK); - - if (pdata->enable_rotary0 || pdata->enable_rotary1) - pxa27x_keypad_scan_rotary(keypad); - - new_state = KPDK_DK(kpdk) & keypad->direct_key_mask; - bits_changed = keypad->direct_key_state ^ new_state; - - if (bits_changed == 0) - return; - - for (i = 0; i < pdata->direct_key_num; i++) { - if (bits_changed & (1 << i)) { - int code = MAX_MATRIX_KEY_NUM + i; - - input_event(input_dev, EV_MSC, MSC_SCAN, code); - input_report_key(input_dev, keypad->keycodes[code], - new_state & (1 << i)); - } - } - input_sync(input_dev); - keypad->direct_key_state = new_state; -} - -static void clear_wakeup_event(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - - if (pdata->clear_wakeup_event) - (pdata->clear_wakeup_event)(); -} - -static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id) -{ - struct pxa27x_keypad *keypad = dev_id; - unsigned long kpc = keypad_readl(KPC); - - clear_wakeup_event(keypad); - - if (kpc & KPC_DI) - pxa27x_keypad_scan_direct(keypad); - - if (kpc & KPC_MI) - pxa27x_keypad_scan_matrix(keypad); - - return IRQ_HANDLED; -} - -static void pxa27x_keypad_config(struct pxa27x_keypad *keypad) -{ - struct pxa27x_keypad_platform_data *pdata = keypad->pdata; - unsigned int mask = 0, direct_key_num = 0; - unsigned long kpc = 0; - - /* enable matrix keys with automatic scan */ - if (pdata->matrix_key_rows && pdata->matrix_key_cols) { - kpc |= KPC_ASACT | KPC_MIE | KPC_ME | KPC_MS_ALL; - kpc |= KPC_MKRN(pdata->matrix_key_rows) | - KPC_MKCN(pdata->matrix_key_cols); - } - - /* enable rotary key, debounce interval same as direct keys */ - if (pdata->enable_rotary0) { - mask |= 0x03; - direct_key_num = 2; - kpc |= KPC_REE0; - } - - if (pdata->enable_rotary1) { - mask |= 0x0c; - direct_key_num = 4; - kpc |= KPC_REE1; - } - - if (pdata->direct_key_num > direct_key_num) - direct_key_num = pdata->direct_key_num; - - keypad->direct_key_mask = ((2 << direct_key_num) - 1) & ~mask; - - /* enable direct key */ - if (direct_key_num) - kpc |= KPC_DE | KPC_DIE | KPC_DKN(direct_key_num); - - keypad_writel(KPC, kpc | KPC_RE_ZERO_DEB); - keypad_writel(KPREC, DEFAULT_KPREC); - keypad_writel(KPKDI, pdata->debounce_interval); -} - -static int pxa27x_keypad_open(struct input_dev *dev) -{ - struct pxa27x_keypad *keypad = input_get_drvdata(dev); - - /* Enable unit clock */ - clk_enable(keypad->clk); - pxa27x_keypad_config(keypad); - - return 0; -} - -static void pxa27x_keypad_close(struct input_dev *dev) -{ - struct pxa27x_keypad *keypad = input_get_drvdata(dev); - - /* Disable clock unit */ - clk_disable(keypad->clk); -} - -#ifdef CONFIG_PM -static int pxa27x_keypad_suspend(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct pxa27x_keypad *keypad = platform_get_drvdata(pdev); - - clk_disable(keypad->clk); - - if (device_may_wakeup(&pdev->dev)) - enable_irq_wake(keypad->irq); - - return 0; -} - -static int pxa27x_keypad_resume(struct device *dev) -{ - struct platform_device *pdev = to_platform_device(dev); - struct pxa27x_keypad *keypad = platform_get_drvdata(pdev); - struct input_dev *input_dev = keypad->input_dev; - - if (device_may_wakeup(&pdev->dev)) - disable_irq_wake(keypad->irq); - - mutex_lock(&input_dev->mutex); - - if (input_dev->users) { - /* Enable unit clock */ - clk_enable(keypad->clk); - pxa27x_keypad_config(keypad); - } - - mutex_unlock(&input_dev->mutex); - - return 0; -} - -static const struct dev_pm_ops pxa27x_keypad_pm_ops = { - .suspend = pxa27x_keypad_suspend, - .resume = pxa27x_keypad_resume, -}; -#endif - -static int __devinit pxa27x_keypad_probe(struct platform_device *pdev) -{ - struct pxa27x_keypad_platform_data *pdata = pdev->dev.platform_data; - struct pxa27x_keypad *keypad; - struct input_dev *input_dev; - struct resource *res; - int irq, error; - - if (pdata == NULL) { - dev_err(&pdev->dev, "no platform data defined\n"); - return -EINVAL; - } - - irq = platform_get_irq(pdev, 0); - if (irq < 0) { - dev_err(&pdev->dev, "failed to get keypad irq\n"); - return -ENXIO; - } - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - if (res == NULL) { - dev_err(&pdev->dev, "failed to get I/O memory\n"); - return -ENXIO; - } - - keypad = kzalloc(sizeof(struct pxa27x_keypad), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!keypad || !input_dev) { - dev_err(&pdev->dev, "failed to allocate memory\n"); - error = -ENOMEM; - goto failed_free; - } - - keypad->pdata = pdata; - keypad->input_dev = input_dev; - keypad->irq = irq; - - res = request_mem_region(res->start, resource_size(res), pdev->name); - if (res == NULL) { - dev_err(&pdev->dev, "failed to request I/O memory\n"); - error = -EBUSY; - goto failed_free; - } - - keypad->mmio_base = ioremap(res->start, resource_size(res)); - if (keypad->mmio_base == NULL) { - dev_err(&pdev->dev, "failed to remap I/O memory\n"); - error = -ENXIO; - goto failed_free_mem; - } - - keypad->clk = clk_get(&pdev->dev, NULL); - if (IS_ERR(keypad->clk)) { - dev_err(&pdev->dev, "failed to get keypad clock\n"); - error = PTR_ERR(keypad->clk); - goto failed_free_io; - } - - input_dev->name = pdev->name; - input_dev->id.bustype = BUS_HOST; - input_dev->open = pxa27x_keypad_open; - input_dev->close = pxa27x_keypad_close; - input_dev->dev.parent = &pdev->dev; - - input_dev->keycode = keypad->keycodes; - input_dev->keycodesize = sizeof(keypad->keycodes[0]); - input_dev->keycodemax = ARRAY_SIZE(keypad->keycodes); - - input_set_drvdata(input_dev, keypad); - - input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP); - input_set_capability(input_dev, EV_MSC, MSC_SCAN); - - pxa27x_keypad_build_keycode(keypad); - - if ((pdata->enable_rotary0 && keypad->rotary_rel_code[0] != -1) || - (pdata->enable_rotary1 && keypad->rotary_rel_code[1] != -1)) { - input_dev->evbit[0] |= BIT_MASK(EV_REL); - } - - error = request_irq(irq, pxa27x_keypad_irq_handler, 0, - pdev->name, keypad); - if (error) { - dev_err(&pdev->dev, "failed to request IRQ\n"); - goto failed_put_clk; - } - - /* Register the input device */ - error = input_register_device(input_dev); - if (error) { - dev_err(&pdev->dev, "failed to register input device\n"); - goto failed_free_irq; - } - - platform_set_drvdata(pdev, keypad); - device_init_wakeup(&pdev->dev, 1); - - return 0; - -failed_free_irq: - free_irq(irq, pdev); -failed_put_clk: - clk_put(keypad->clk); -failed_free_io: - iounmap(keypad->mmio_base); -failed_free_mem: - release_mem_region(res->start, resource_size(res)); -failed_free: - input_free_device(input_dev); - kfree(keypad); - return error; -} - -static int __devexit pxa27x_keypad_remove(struct platform_device *pdev) -{ - struct pxa27x_keypad *keypad = platform_get_drvdata(pdev); - struct resource *res; - - free_irq(keypad->irq, pdev); - clk_put(keypad->clk); - - input_unregister_device(keypad->input_dev); - iounmap(keypad->mmio_base); - - res = platform_get_resource(pdev, IORESOURCE_MEM, 0); - release_mem_region(res->start, resource_size(res)); - - platform_set_drvdata(pdev, NULL); - kfree(keypad); - - return 0; -} - -/* work with hotplug and coldplug */ -MODULE_ALIAS("platform:pxa27x-keypad"); - -static struct platform_driver pxa27x_keypad_driver = { - .probe = pxa27x_keypad_probe, - .remove = __devexit_p(pxa27x_keypad_remove), - .driver = { - .name = "pxa27x-keypad", - .owner = THIS_MODULE, -#ifdef CONFIG_PM - .pm = &pxa27x_keypad_pm_ops, -#endif - }, -}; -module_platform_driver(pxa27x_keypad_driver); - -MODULE_DESCRIPTION("PXA27x Keypad Controller Driver"); -MODULE_LICENSE("GPL"); |