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| author | Corey Minyard | 2018-08-20 22:26:04 +0200 |
|---|---|---|
| committer | Paolo Bonzini | 2018-08-23 18:46:25 +0200 |
| commit | 38ad4fae43b9c57a4ef3111217b110b25dbd3c50 (patch) | |
| tree | a86604f02e39e2d4ac4c2a56d87aa22a1a2c6eee /include/hw/i2c | |
| parent | i2c: pm_smbus: Make the I2C block read command read-only (diff) | |
| download | qemu-38ad4fae43b9c57a4ef3111217b110b25dbd3c50.tar.gz qemu-38ad4fae43b9c57a4ef3111217b110b25dbd3c50.tar.xz qemu-38ad4fae43b9c57a4ef3111217b110b25dbd3c50.zip | |
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 <cminyard@mvista.com>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <1534796770-10295-5-git-send-email-minyard@acm.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'include/hw/i2c')
| -rw-r--r-- | include/hw/i2c/pm_smbus.h | 20 |
1 files changed, 18 insertions, 2 deletions
diff --git a/include/hw/i2c/pm_smbus.h b/include/hw/i2c/pm_smbus.h index 2a837afdcb..99d5489e1b 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); |