diff options
| -rw-r--r-- | hw/lm832x.c | 41 |
1 files changed, 22 insertions, 19 deletions
diff --git a/hw/lm832x.c b/hw/lm832x.c index 32bfcb0..f0ba52f 100644 --- a/hw/lm832x.c +++ b/hw/lm832x.c @@ -25,9 +25,9 @@ typedef struct { i2c_slave i2c; - int i2c_dir; - int i2c_cycle; - int reg; + uint8_t i2c_dir; + uint8_t i2c_cycle; + uint8_t reg; qemu_irq nirq; uint16_t model; @@ -54,8 +54,8 @@ typedef struct { struct { uint8_t dbnctime; uint8_t size; - int start; - int len; + uint8_t start; + uint8_t len; uint8_t fifo[16]; } kbd; @@ -152,6 +152,9 @@ enum { LM832x_CMD_PWM_WRITE = 0x95, /* Write PWM script. */ LM832x_CMD_PWM_START = 0x96, /* Start PWM engine. */ LM832x_CMD_PWM_STOP = 0x97, /* Stop PWM engine. */ + LM832x_GENERAL_ERROR = 0xff, /* There was one error. + Previously was represented by -1 + This is not a command */ }; #define LM832x_MAX_KPX 8 @@ -257,7 +260,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) lm_kbd_irq_update(s); s->kbd.len = 0; s->kbd.start = 0; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; break; case LM832x_CMD_RESET: @@ -265,7 +268,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) lm_kbd_reset(s); else lm_kbd_error(s, ERR_BADPAR); - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; break; case LM823x_CMD_WRITE_PULL_DOWN: @@ -274,7 +277,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) else { s->gpio.pull |= value << 8; lm_kbd_gpio_update(s); - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; } break; case LM832x_CMD_WRITE_PORT_SEL: @@ -283,7 +286,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) else { s->gpio.dir |= value << 8; lm_kbd_gpio_update(s); - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; } break; case LM832x_CMD_WRITE_PORT_STATE: @@ -292,25 +295,25 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) else { s->gpio.mask |= value << 8; lm_kbd_gpio_update(s); - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; } break; case LM832x_CMD_SET_ACTIVE: s->acttime = value; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; break; case LM832x_CMD_SET_DEBOUNCE: s->kbd.dbnctime = value; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; if (!value) lm_kbd_error(s, ERR_BADPAR); break; case LM832x_CMD_SET_KEY_SIZE: s->kbd.size = value; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; if ( (value & 0xf) < 3 || (value & 0xf) > LM832x_MAX_KPY || (value >> 4) < 3 || (value >> 4) > LM832x_MAX_KPX) @@ -319,7 +322,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) case LM832x_CMD_WRITE_CLOCK: s->clock = value; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; if ((value & 3) && (value & 3) != 3) { lm_kbd_error(s, ERR_BADPAR); fprintf(stderr, "%s: invalid clock setting in RCPWM\n", @@ -332,7 +335,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) if (byte == 0) { if (!(value & 3) || (value >> 2) > 59) { lm_kbd_error(s, ERR_BADPAR); - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; break; } @@ -342,11 +345,11 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) s->pwm.file[s->pwm.faddr] |= value << 8; } else if (byte == 2) { s->pwm.file[s->pwm.faddr] |= value << 0; - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; } break; case LM832x_CMD_PWM_START: - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; if (!(value & 3) || (value >> 2) > 59) { lm_kbd_error(s, ERR_BADPAR); break; @@ -356,7 +359,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) lm_kbd_pwm_start(s, (value & 3) - 1); break; case LM832x_CMD_PWM_STOP: - s->reg = -1; + s->reg = LM832x_GENERAL_ERROR; if (!(value & 3)) { lm_kbd_error(s, ERR_BADPAR); break; @@ -365,7 +368,7 @@ static void lm_kbd_write(LM823KbdState *s, int reg, int byte, uint8_t value) qemu_del_timer(s->pwm.tm[(value & 3) - 1]); break; - case -1: + case LM832x_GENERAL_ERROR: lm_kbd_error(s, ERR_BADPAR); break; default: |