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spi: Get basic SPI commands working

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This commit is contained in:
Sean Cross 2014-09-12 16:46:11 +08:00
parent 8d0e780508
commit 43a1517aec
8 changed files with 118 additions and 77 deletions
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47
scriptic/spi-blockmode.S
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@ -2,7 +2,7 @@
#include "fernvale-spi.h"
/* Enable block mode for SPI CS0 */
sc_new "spi_run_cs0", 1, 0, 0
sc_new "spi_run", 1, 0, 0
/* Wait for channel 2 to be idle */
sc_write32 SPI_CTRL3_CHANNEL2_MASK, SPI_CTRL3_CHANNEL2_MASK, SPI_CTRL3
@ -15,7 +15,7 @@
/* Trigger the transfer */
sc_write32 \
SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS0, \
SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS0, \
SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS, \
SPI_BLOCKMODE
/* Wait for the device to prepare itself */
@ -25,48 +25,7 @@
sc_read32 0, SPI_BLOCKMODE_BUSY, SPI_BLOCKMODE
/* Stop the transfer */
sc_write32 0, SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS0, SPI_BLOCKMODE
/* Wait for it to be disabled */
sc_read32 0, SPI_BLOCKMODE_PREP, SPI_BLOCKMODE
/* Exit block mode */
sc_write32 0, SPI_BLOCKMODE_ENABLE, SPI_BLOCKMODE
/* Wait for the chip to actually exit block mode */
sc_read32 0, SPI_BLOCKMODE_ENABLE, SPI_BLOCKMODE
/* Allow channel 2 to contain data */
sc_write32 0, SPI_CTRL3_CHANNEL2_MASK, SPI_CTRL3
sc_end
/* Enable block mode for SPI CS1 */
sc_new "spi_run_cs1", 1, 0, 0
/* Wait for channel 2 to be idle */
sc_write32 SPI_CTRL3_CHANNEL2_MASK, SPI_CTRL3_CHANNEL2_MASK, SPI_CTRL3
sc_read32 SPI_CTRL3_CHANNEL2_IDLE, SPI_CTRL3_CHANNEL2_IDLE, SPI_CTRL3
sc_read32 SPI_CTRL1_BUS_IDLE, SPI_CTRL1_BUS_IDLE, SPI_CTRL1
/* Turn on block mode */
sc_write32 SPI_BLOCKMODE_ENABLE, SPI_BLOCKMODE_ENABLE, SPI_BLOCKMODE
/* Trigger the transfer */
sc_write32 \
SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS1, \
SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS1, \
SPI_BLOCKMODE
/* Wait for the device to prepare itself */
sc_read32 SPI_BLOCKMODE_PREP, SPI_BLOCKMODE_PREP, SPI_BLOCKMODE
/* Wait for it to finish */
sc_read32 0, SPI_BLOCKMODE_BUSY, SPI_BLOCKMODE
/* Stop the transfer */
sc_write32 0, SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS1, SPI_BLOCKMODE
sc_write32 0, SPI_BLOCKMODE_TRIGGER | SPI_BLOCKMODE_CS, SPI_BLOCKMODE
/* Wait for it to be disabled */
sc_read32 0, SPI_BLOCKMODE_PREP, SPI_BLOCKMODE