From faa1bdfa32547ea616ec554aa807b4e24e30acef Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Date: Wed, 17 Jun 2020 09:25:27 +0200 Subject: hw/i2c/versatile_i2c: Add definitions for register addresses MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Use self-explicit definitions instead of magic values. Signed-off-by: Philippe Mathieu-Daudé Message-id: 20200617072539.32686-3-f4bug@amsat.org Reviewed-by: Peter Maydell Signed-off-by: Peter Maydell --- hw/i2c/versatile_i2c.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/hw/i2c/versatile_i2c.c b/hw/i2c/versatile_i2c.c index 1ac2a6f59a..040139d701 100644 --- a/hw/i2c/versatile_i2c.c +++ b/hw/i2c/versatile_i2c.c @@ -24,6 +24,7 @@ #include "qemu/osdep.h" #include "hw/sysbus.h" #include "hw/i2c/bitbang_i2c.h" +#include "hw/registerfields.h" #include "qemu/log.h" #include "qemu/module.h" @@ -40,14 +41,19 @@ typedef struct VersatileI2CState { int in; } VersatileI2CState; +REG32(CONTROL_GET, 0) +REG32(CONTROL_SET, 0) +REG32(CONTROL_CLR, 4) + static uint64_t versatile_i2c_read(void *opaque, hwaddr offset, unsigned size) { VersatileI2CState *s = (VersatileI2CState *)opaque; - if (offset == 0) { + switch (offset) { + case A_CONTROL_SET: return (s->out & 1) | (s->in << 1); - } else { + default: qemu_log_mask(LOG_GUEST_ERROR, "%s: Bad offset 0x%x\n", __func__, (int)offset); return -1; @@ -60,10 +66,10 @@ static void versatile_i2c_write(void *opaque, hwaddr offset, VersatileI2CState *s = (VersatileI2CState *)opaque; switch (offset) { - case 0: + case A_CONTROL_SET: s->out |= value & 3; break; - case 4: + case A_CONTROL_CLR: s->out &= ~value; break; default: -- cgit v1.2.3