From 38ad4fae43b9c57a4ef3111217b110b25dbd3c50 Mon Sep 17 00:00:00 2001 From: Corey Minyard Date: Mon, 20 Aug 2018 15:26:04 -0500 Subject: i2c: pm_smbus: Add block transfer capability There was no block transfer code in pm_smbus.c, and it is needed for some devices. So add it. This adds both byte-by-byte block transfers and buffered block transfers. Signed-off-by: Corey Minyard Cc: Michael S. Tsirkin Cc: Paolo Bonzini Message-Id: <1534796770-10295-5-git-send-email-minyard@acm.org> Signed-off-by: Paolo Bonzini --- include/hw/i2c/pm_smbus.h | 20 ++++++++++++++++++-- 1 file changed, 18 insertions(+), 2 deletions(-) (limited to 'include/hw/i2c') diff --git a/include/hw/i2c/pm_smbus.h b/include/hw/i2c/pm_smbus.h index 2a837af..99d5489 100644 --- a/include/hw/i2c/pm_smbus.h +++ b/include/hw/i2c/pm_smbus.h @@ -1,6 +1,8 @@ #ifndef PM_SMBUS_H #define PM_SMBUS_H +#define PM_SMBUS_MAX_MSG_SIZE 32 + typedef struct PMSMBus { I2CBus *smbus; MemoryRegion io; @@ -11,8 +13,22 @@ typedef struct PMSMBus { uint8_t smb_addr; uint8_t smb_data0; uint8_t smb_data1; - uint8_t smb_data[32]; - uint8_t smb_index; + uint8_t smb_data[PM_SMBUS_MAX_MSG_SIZE]; + uint8_t smb_blkdata; + uint8_t smb_auxctl; + uint32_t smb_index; + + /* Set by pm_smbus.c */ + void (*reset)(struct PMSMBus *s); + + /* Set by the user. */ + bool i2c_enable; + + /* Internally used by pm_smbus. */ + + /* Set on block transfers after the last byte has been read, so the + INTR bit can be set at the right time. */ + bool op_done; } PMSMBus; void pm_smbus_init(DeviceState *parent, PMSMBus *smb); -- cgit v1.1