| 4228966d | 06-Jan-2025 |
Even Xu <[email protected]> |
HID: intel-thc-hid: intel-thc: Add THC I2C config interfaces
Add I2C bus related APIs to initialize I2C sub-system parameters, such
as bus speed, slave address, address bit. As I2C sub-system hasn't
HID: intel-thc-hid: intel-thc: Add THC I2C config interfaces
Add I2C bus related APIs to initialize I2C sub-system parameters, such
as bus speed, slave address, address bit. As I2C sub-system hasn't
auto register save and restore support, provide APIs to do it manually.
Co-developed-by: Xinpeng Sun <[email protected]>
Signed-off-by: Xinpeng Sun <[email protected]>
Signed-off-by: Even Xu <[email protected]>
Tested-by: Rui Zhang <[email protected]>
Tested-by: Mark Pearson <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
Reviewed-by: Mark Pearson <[email protected]>
Tested-by: Aaron Ma <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
show more ...
|
| f02bcaba | 06-Jan-2025 |
Xinpeng Sun <[email protected]> |
HID: intel-thc-hid: intel-thc: Add THC SPI config interfaces
Add SPI bus related APIs to configure SPI operation parameters,
such as port type, bus frequency, bus IO mode, read/write OPcode,
and sla
HID: intel-thc-hid: intel-thc: Add THC SPI config interfaces
Add SPI bus related APIs to configure SPI operation parameters,
such as port type, bus frequency, bus IO mode, read/write OPcode,
and slave register addresses.
Co-developed-by: Even Xu <[email protected]>
Signed-off-by: Even Xu <[email protected]>
Signed-off-by: Xinpeng Sun <[email protected]>
Tested-by: Rui Zhang <[email protected]>
Tested-by: Mark Pearson <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
Reviewed-by: Mark Pearson <[email protected]>
Tested-by: Aaron Ma <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
show more ...
|
| a688404b | 06-Jan-2025 |
Even Xu <[email protected]> |
HID: intel-thc-hid: intel-thc: Add THC DMA interfaces
As THC PIO only has 64 bytes FIFO length, THC DMAs are introduced to
send/receive large data packets.
THC has three types of DMA channels: Read
HID: intel-thc-hid: intel-thc: Add THC DMA interfaces
As THC PIO only has 64 bytes FIFO length, THC DMAs are introduced to
send/receive large data packets.
THC has three types of DMA channels: Read DMA channel (RxDMA), Write DMA
channel (TxDMA) and Software DMA (SWDMA).
In addition to basic DMA functions, THC RxDMA also includes an auto
hardware sequence which can handle external touch device's interrupt
automatically without software involved. THC RxDMA channel usually is
used for handling touch input reports.
THC TxDMA is very similar with general IO TxDMA, and usually is used
for sending command/request to exteranl touch device.
THC SWDMA can perform read, write followed by read operation
according to different configurations. Unlike RxDMA triggered by bus
activity, SWDMA can be triggered by SW driver at any time, for example:
- Retrieving an input report without interrupt
- Sending command followed by reading response
THC DMA operation flow includes 4 steps:
1. Allocate DMA buffers
2. Configure opcode, fill PRD table with DMA buffers, enable DMA channel
3. Wait for completion, read out DMA buffers and update buffer pointers
4. Stop DMA and release DMA buffers
THC Hardware layer driver provides APIs for all above DMA Steps.
Co-developed-by: Xinpeng Sun <[email protected]>
Signed-off-by: Xinpeng Sun <[email protected]>
Signed-off-by: Even Xu <[email protected]>
Tested-by: Rui Zhang <[email protected]>
Tested-by: Mark Pearson <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
Reviewed-by: Mark Pearson <[email protected]>
Tested-by: Aaron Ma <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
show more ...
|
| 86f5f4ab | 06-Jan-2025 |
Xinpeng Sun <[email protected]> |
HID: intel-thc-hid: intel-thc: Add APIs for interrupt
Add THC interrupt operation interfaces, such as interrupt configure,
global interrupt enable/disable, external touch device GPIO interrupt
quies
HID: intel-thc-hid: intel-thc: Add APIs for interrupt
Add THC interrupt operation interfaces, such as interrupt configure,
global interrupt enable/disable, external touch device GPIO interrupt
quiesce and unquiesce.
Co-developed-by: Even Xu <[email protected]>
Signed-off-by: Even Xu <[email protected]>
Signed-off-by: Xinpeng Sun <[email protected]>
Tested-by: Rui Zhang <[email protected]>
Tested-by: Mark Pearson <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
Reviewed-by: Mark Pearson <[email protected]>
Tested-by: Aaron Ma <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
show more ...
|
| e584b135 | 06-Jan-2025 |
Xinpeng Sun <[email protected]> |
HID: intel-thc-hid: intel-thc: Add THC PIO operation APIs
THC PIO (programmed I/O) operations are very similar with general
SPI/I2C read/write operation to access external slave device on the bus
th
HID: intel-thc-hid: intel-thc: Add THC PIO operation APIs
THC PIO (programmed I/O) operations are very similar with general
SPI/I2C read/write operation to access external slave device on the bus
through internal FIFO.
THC PIO operations are split into 4 steps:
1. prepare: configure hardware with correct opcode, slave address, and
fill the PIO FIFO
2. start: set start bit to issue a bus send/receive
3. wait: wait for bus sending/receiving completion
4. complete: check send/receive data in FIFO and return
Co-developed-by: Even Xu <[email protected]>
Signed-off-by: Even Xu <[email protected]>
Signed-off-by: Xinpeng Sun <[email protected]>
Tested-by: Rui Zhang <[email protected]>
Tested-by: Mark Pearson <[email protected]>
Reviewed-by: Srinivas Pandruvada <[email protected]>
Reviewed-by: Mark Pearson <[email protected]>
Tested-by: Aaron Ma <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
show more ...
|