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Differential D6223 Diff 15963 head/sys/mips/mediatek/mtk_spi_v1.c

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head/sys/mips/mediatek/mtk_spi_v1.c

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#include <sys/kernel.h> #include <sys/kernel.h>
#include <sys/module.h> #include <sys/module.h>
#include <sys/rman.h> #include <sys/rman.h>
#include <sys/lock.h> #include <sys/lock.h>
#include <sys/mutex.h> #include <sys/mutex.h>
#include <machine/bus.h> #include <machine/bus.h>
#include <machine/cpu.h> #include <machine/cpu.h>
//#include <machine/pmap.h>
#include <dev/spibus/spi.h> #include <dev/spibus/spi.h>
#include <dev/spibus/spibusvar.h> #include <dev/spibus/spibusvar.h>
#include "spibus_if.h" #include "spibus_if.h"
#include "opt_platform.h" #include "opt_platform.h"
#include <dev/ofw/openfirm.h> #include <dev/ofw/openfirm.h>
▲ Show 20 Lines • Show All 107 Lines • ▼ Show 20 Lines if (sc->sc_mem_res)
bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res); bus_release_resource(dev, SYS_RES_MEMORY, 0, sc->sc_mem_res);
return (0); return (0);
} }
static void static void
mtk_spi_chip_activate(struct mtk_spi_softc *sc) mtk_spi_chip_activate(struct mtk_spi_softc *sc)
{ {
// printf("%s\n", __func__);
mtk_spi_wait(sc); mtk_spi_wait(sc);
/* /*
* Put all CSx to low * Put all CSx to low
*/ */
SPI_CLEAR_BITS(sc, MTK_SPICTL, CS_HIGH | HIZSMOSI); SPI_CLEAR_BITS(sc, MTK_SPICTL, CS_HIGH | HIZSMOSI);
} }
static void static void
mtk_spi_chip_deactivate(struct mtk_spi_softc *sc) mtk_spi_chip_deactivate(struct mtk_spi_softc *sc)
{ {
// printf("%s\n", __func__);
mtk_spi_wait(sc); mtk_spi_wait(sc);
/* /*
* Put all CSx to high * Put all CSx to high
*/ */
SPI_SET_BITS(sc, MTK_SPICTL, CS_HIGH | HIZSMOSI); SPI_SET_BITS(sc, MTK_SPICTL, CS_HIGH | HIZSMOSI);
} }
static int static int
Show All 18 Lines
{ {
if (mtk_spi_wait(sc)) if (mtk_spi_wait(sc))
return (EBUSY); return (EBUSY);
if (write == MTK_SPI_WRITE) { if (write == MTK_SPI_WRITE) {
SPI_WRITE(sc, MTK_SPIDATA, *data); SPI_WRITE(sc, MTK_SPIDATA, *data);
SPI_SET_BITS(sc, MTK_SPICTL, START_WRITE); SPI_SET_BITS(sc, MTK_SPICTL, START_WRITE);
//printf("%s(W:%d)\n", __func__, *data);
} else {/* MTK_SPI_READ */ } else {/* MTK_SPI_READ */
SPI_SET_BITS(sc, MTK_SPICTL, START_READ); SPI_SET_BITS(sc, MTK_SPICTL, START_READ);
if (mtk_spi_wait(sc)) if (mtk_spi_wait(sc))
return (EBUSY); return (EBUSY);
*data = SPI_READ(sc, MTK_SPIDATA) & 0xff; *data = SPI_READ(sc, MTK_SPIDATA) & 0xff;
//printf("%s(R:%d)\n", __func__, *data);
} }
return (0); return (0);
} }
static int static int
mtk_spi_transfer(device_t dev, device_t child, struct spi_command *cmd) mtk_spi_transfer(device_t dev, device_t child, struct spi_command *cmd)
{ {
struct mtk_spi_softc *sc; struct mtk_spi_softc *sc;
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