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https://github.com/brain-hackers/u-boot-brain
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d7af6a4851
Add a uclass which provides access to SPI buses and includes operations required by SPI. For a time driver model will need to co-exist with the legacy SPI interface so some parts of the header file are changed depending on which is in use. The exports are adjusted also since some functions are not available with driver model. Boards must define CONFIG_DM_SPI to use driver model for SPI. Signed-off-by: Simon Glass <sjg@chromium.org> Reviewed-by: Jagannadha Sutradharudu Teki <jagannadh.teki@gmail.com> (Discussed some follow-up comments which will address in future add-ons)
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
#include <common.h>
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#include <exports.h>
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#include <spi.h>
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DECLARE_GLOBAL_DATA_PTR;
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__attribute__((unused)) static void dummy(void)
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{
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}
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unsigned long get_version(void)
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{
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return XF_VERSION;
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}
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/* Reuse _exports.h with a little trickery to avoid bitrot */
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#define EXPORT_FUNC(sym) gd->jt[XF_##sym] = (void *)sym;
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#if !defined(CONFIG_X86) && !defined(CONFIG_PPC)
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# define install_hdlr dummy
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# define free_hdlr dummy
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#else /* kludge for non-standard function naming */
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# define install_hdlr irq_install_handler
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# define free_hdlr irq_free_handler
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#endif
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#ifndef CONFIG_CMD_I2C
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# define i2c_write dummy
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# define i2c_read dummy
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#endif
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#if !defined(CONFIG_CMD_SPI) || defined(CONFIG_DM_SPI)
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# define spi_init dummy
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# define spi_setup_slave dummy
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# define spi_free_slave dummy
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#endif
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#ifndef CONFIG_CMD_SPI
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# define spi_claim_bus dummy
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# define spi_release_bus dummy
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# define spi_xfer dummy
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#endif
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void jumptable_init(void)
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{
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gd->jt = malloc(XF_MAX * sizeof(void *));
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#include <_exports.h>
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}
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