diff options
Diffstat (limited to 'drivers/input/keyboard')
| -rw-r--r-- | drivers/input/keyboard/pxa27x_keypad.c | 158 |
1 files changed, 124 insertions, 34 deletions
diff --git a/drivers/input/keyboard/pxa27x_keypad.c b/drivers/input/keyboard/pxa27x_keypad.c index cd25b34..ceaf1e0 100644 --- a/drivers/input/keyboard/pxa27x_keypad.c +++ b/drivers/input/keyboard/pxa27x_keypad.c @@ -31,25 +31,71 @@ #include <asm/mach/map.h> #include <asm/arch/hardware.h> -#include <asm/arch/pxa-regs.h> -#include <asm/arch/irqs.h> #include <asm/arch/pxa27x_keypad.h> -#define DRIVER_NAME "pxa27x-keypad" - +/* + * 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) & 0x7) - 1) << 26) /* matrix key row number */ #define KPC_MKCN(n) ((((n) & 0x7) - 1) << 23) /* matrix key column number */ #define KPC_DKN(n) ((((n) & 0x7) - 1) << 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 KPAS_MUKP(n) (((n) >> 26) & 0x1f) -#define KPAS_RP(n) (((n) >> 4) & 0xf) -#define KPAS_CP(n) ((n) & 0xf) +#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 (8 * 8) struct pxa27x_keypad { @@ -57,6 +103,7 @@ struct pxa27x_keypad { struct clk *clk; struct input_dev *input_dev; + void __iomem *mmio_base; /* matrix key code map */ unsigned int matrix_keycodes[MAX_MATRIX_KEY_NUM]; @@ -120,7 +167,7 @@ static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad) struct pxa27x_keypad_platform_data *pdata = keypad->pdata; int row, col, num_keys_pressed = 0; uint32_t new_state[MAX_MATRIX_KEY_COLS]; - uint32_t kpas = KPAS; + uint32_t kpas = keypad_readl(KPAS); num_keys_pressed = KPAS_MUKP(kpas); @@ -143,10 +190,10 @@ static void pxa27x_keypad_scan_matrix(struct pxa27x_keypad *keypad) } if (num_keys_pressed > 1) { - uint32_t kpasmkp0 = KPASMKP0; - uint32_t kpasmkp1 = KPASMKP1; - uint32_t kpasmkp2 = KPASMKP2; - uint32_t kpasmkp3 = KPASMKP3; + 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; @@ -218,8 +265,8 @@ static void pxa27x_keypad_scan_rotary(struct pxa27x_keypad *keypad) uint32_t kprec; /* read and reset to default count value */ - kprec = KPREC; - KPREC = DEFAULT_KPREC; + kprec = keypad_readl(KPREC); + keypad_writel(KPREC, DEFAULT_KPREC); if (pdata->enable_rotary0) report_rotary_event(keypad, 0, rotary_delta(kprec)); @@ -235,7 +282,7 @@ static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad) uint32_t kpdk, bits_changed; int i; - kpdk = KPDK; + kpdk = keypad_readl(KPDK); if (pdata->enable_rotary0 || pdata->enable_rotary1) pxa27x_keypad_scan_rotary(keypad); @@ -262,7 +309,7 @@ static void pxa27x_keypad_scan_direct(struct pxa27x_keypad *keypad) static irqreturn_t pxa27x_keypad_irq_handler(int irq, void *dev_id) { struct pxa27x_keypad *keypad = dev_id; - unsigned long kpc = KPC; + unsigned long kpc = keypad_readl(KPC); if (kpc & KPC_DI) pxa27x_keypad_scan_direct(keypad); @@ -308,8 +355,8 @@ static void pxa27x_keypad_config(struct pxa27x_keypad *keypad) if (direct_key_num) kpc |= KPC_DE | KPC_DIE | KPC_DKN(direct_key_num); - KPC = kpc | KPC_RE_ZERO_DEB; - KPREC = DEFAULT_KPREC; + keypad_writel(KPC, kpc | KPC_RE_ZERO_DEB); + keypad_writel(KPREC, DEFAULT_KPREC); } static int pxa27x_keypad_open(struct input_dev *dev) @@ -362,11 +409,14 @@ static int pxa27x_keypad_resume(struct platform_device *pdev) #define pxa27x_keypad_resume NULL #endif +#define res_size(res) ((res)->end - (res)->start + 1) + static int __devinit pxa27x_keypad_probe(struct platform_device *pdev) { struct pxa27x_keypad *keypad; struct input_dev *input_dev; - int error; + struct resource *res; + int irq, error; keypad = kzalloc(sizeof(struct pxa27x_keypad), GFP_KERNEL); if (keypad == NULL) { @@ -381,11 +431,39 @@ static int __devinit pxa27x_keypad_probe(struct platform_device *pdev) goto failed_free; } + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(&pdev->dev, "failed to get keypad irq\n"); + error = -ENXIO; + goto failed_free; + } + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (res == NULL) { + dev_err(&pdev->dev, "failed to get I/O memory\n"); + error = -ENXIO; + goto failed_free; + } + + res = request_mem_region(res->start, res_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, res_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, "KBDCLK"); if (IS_ERR(keypad->clk)) { dev_err(&pdev->dev, "failed to get keypad clock\n"); error = PTR_ERR(keypad->clk); - goto failed_free; + goto failed_free_io; } /* Create and register the input driver. */ @@ -396,7 +474,7 @@ static int __devinit pxa27x_keypad_probe(struct platform_device *pdev) goto failed_put_clk; } - input_dev->name = DRIVER_NAME; + input_dev->name = pdev->name; input_dev->id.bustype = BUS_HOST; input_dev->open = pxa27x_keypad_open; input_dev->close = pxa27x_keypad_close; @@ -409,30 +487,35 @@ static int __devinit pxa27x_keypad_probe(struct platform_device *pdev) BIT_MASK(EV_REL); pxa27x_keypad_build_keycode(keypad); + platform_set_drvdata(pdev, keypad); - error = request_irq(IRQ_KEYPAD, pxa27x_keypad_irq_handler, IRQF_DISABLED, - DRIVER_NAME, keypad); + error = request_irq(irq, pxa27x_keypad_irq_handler, IRQF_DISABLED, + pdev->name, keypad); if (error) { - printk(KERN_ERR "Cannot request keypad IRQ\n"); - goto err_free_dev; + dev_err(&pdev->dev, "failed to request IRQ\n"); + goto failed_free_dev; } - platform_set_drvdata(pdev, keypad); - /* Register the input device */ error = input_register_device(input_dev); - if (error) - goto err_free_irq; + if (error) { + dev_err(&pdev->dev, "failed to register input device\n"); + goto failed_free_irq; + } return 0; - err_free_irq: +failed_free_irq: + free_irq(irq, pdev); platform_set_drvdata(pdev, NULL); - free_irq(IRQ_KEYPAD, pdev); - err_free_dev: +failed_free_dev: input_free_device(input_dev); failed_put_clk: clk_put(keypad->clk); +failed_free_io: + iounmap(keypad->mmio_base); +failed_free_mem: + release_mem_region(res->start, res_size(res)); failed_free: kfree(keypad); return error; @@ -441,13 +524,20 @@ failed_free: static int __devexit pxa27x_keypad_remove(struct platform_device *pdev) { struct pxa27x_keypad *keypad = platform_get_drvdata(pdev); + struct resource *res; - free_irq(IRQ_KEYPAD, pdev); + free_irq(platform_get_irq(pdev, 0), pdev); clk_disable(keypad->clk); clk_put(keypad->clk); input_unregister_device(keypad->input_dev); + input_free_device(keypad->input_dev); + + iounmap(keypad->mmio_base); + + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + release_mem_region(res->start, res_size(res)); platform_set_drvdata(pdev, NULL); kfree(keypad); @@ -460,7 +550,7 @@ static struct platform_driver pxa27x_keypad_driver = { .suspend = pxa27x_keypad_suspend, .resume = pxa27x_keypad_resume, .driver = { - .name = DRIVER_NAME, + .name = "pxa27x-keypad", }, }; |