Input: spear_keyboard - rename bit definitions to reflect register
Rename bit definition macros to reflect keyboard registers clearly thus being more readable. Signed-off-by: Shiraz Hashim <shiraz.hashim@st.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Родитель
e99191f039
Коммит
f6f2efa35f
|
@ -27,7 +27,7 @@
|
|||
#include <plat/keyboard.h>
|
||||
|
||||
/* Keyboard Registers */
|
||||
#define MODE_REG 0x00
|
||||
#define MODE_CTL_REG 0x00
|
||||
#define STATUS_REG 0x0C
|
||||
#define DATA_REG 0x10
|
||||
#define INTR_MASK 0x54
|
||||
|
@ -38,22 +38,23 @@
|
|||
* control register as 1010010(82MHZ)
|
||||
*/
|
||||
#define PCLK_FREQ_MSK 0xA400 /* 82 MHz */
|
||||
#define START_SCAN 0x0100
|
||||
#define SCAN_RATE_10 0x0000
|
||||
#define SCAN_RATE_20 0x0004
|
||||
#define SCAN_RATE_40 0x0008
|
||||
#define SCAN_RATE_80 0x000C
|
||||
#define MODE_KEYBOARD 0x0002
|
||||
#define DATA_AVAIL 0x2
|
||||
|
||||
#define KEY_MASK 0xFF000000
|
||||
#define KEY_VALUE 0x00FFFFFF
|
||||
#define ROW_MASK 0xF0
|
||||
#define COLUMN_MASK 0x0F
|
||||
#define NUM_ROWS 16
|
||||
#define NUM_COLS 16
|
||||
|
||||
#define KEY_MATRIX_SHIFT 6
|
||||
#define MODE_CTL_KEYBOARD (0x2 << 0)
|
||||
#define MODE_CTL_SCAN_RATE_10 (0x0 << 2)
|
||||
#define MODE_CTL_SCAN_RATE_20 (0x1 << 2)
|
||||
#define MODE_CTL_SCAN_RATE_40 (0x2 << 2)
|
||||
#define MODE_CTL_SCAN_RATE_80 (0x3 << 2)
|
||||
#define MODE_CTL_KEYNUM_SHIFT 6
|
||||
#define MODE_CTL_START_SCAN (0x1 << 8)
|
||||
|
||||
#define STATUS_DATA_AVAIL (0x1 << 1)
|
||||
|
||||
#define DATA_ROW_MASK 0xF0
|
||||
#define DATA_COLUMN_MASK 0x0F
|
||||
|
||||
#define ROW_SHIFT 4
|
||||
|
||||
struct spear_kbd {
|
||||
struct input_dev *input;
|
||||
|
@ -75,7 +76,7 @@ static irqreturn_t spear_kbd_interrupt(int irq, void *dev_id)
|
|||
u32 sts, val;
|
||||
|
||||
sts = readl_relaxed(kbd->io_base + STATUS_REG);
|
||||
if (!(sts & DATA_AVAIL))
|
||||
if (!(sts & STATUS_DATA_AVAIL))
|
||||
return IRQ_NONE;
|
||||
|
||||
if (kbd->last_key != KEY_RESERVED) {
|
||||
|
@ -84,7 +85,8 @@ static irqreturn_t spear_kbd_interrupt(int irq, void *dev_id)
|
|||
}
|
||||
|
||||
/* following reads active (row, col) pair */
|
||||
val = readl_relaxed(kbd->io_base + DATA_REG);
|
||||
val = readl_relaxed(kbd->io_base + DATA_REG) &
|
||||
(DATA_ROW_MASK | DATA_COLUMN_MASK);
|
||||
key = kbd->keycodes[val];
|
||||
|
||||
input_event(input, EV_MSC, MSC_SCAN, val);
|
||||
|
@ -112,15 +114,15 @@ static int spear_kbd_open(struct input_dev *dev)
|
|||
return error;
|
||||
|
||||
/* program keyboard */
|
||||
val = SCAN_RATE_80 | MODE_KEYBOARD | PCLK_FREQ_MSK |
|
||||
(kbd->mode << KEY_MATRIX_SHIFT);
|
||||
writel_relaxed(val, kbd->io_base + MODE_REG);
|
||||
val = MODE_CTL_SCAN_RATE_80 | MODE_CTL_KEYBOARD | PCLK_FREQ_MSK |
|
||||
(kbd->mode << MODE_CTL_KEYNUM_SHIFT);
|
||||
writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
|
||||
writel_relaxed(1, kbd->io_base + STATUS_REG);
|
||||
|
||||
/* start key scan */
|
||||
val = readl_relaxed(kbd->io_base + MODE_REG);
|
||||
val |= START_SCAN;
|
||||
writel_relaxed(val, kbd->io_base + MODE_REG);
|
||||
val = readl_relaxed(kbd->io_base + MODE_CTL_REG);
|
||||
val |= MODE_CTL_START_SCAN;
|
||||
writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
@ -131,9 +133,9 @@ static void spear_kbd_close(struct input_dev *dev)
|
|||
u32 val;
|
||||
|
||||
/* stop key scan */
|
||||
val = readl_relaxed(kbd->io_base + MODE_REG);
|
||||
val &= ~START_SCAN;
|
||||
writel_relaxed(val, kbd->io_base + MODE_REG);
|
||||
val = readl_relaxed(kbd->io_base + MODE_CTL_REG);
|
||||
val &= ~MODE_CTL_START_SCAN;
|
||||
writel_relaxed(val, kbd->io_base + MODE_CTL_REG);
|
||||
|
||||
clk_disable(kbd->clk);
|
||||
|
||||
|
|
Загрузка…
Ссылка в новой задаче