diff options
| author | Sergey Kambalin <serg.oker@gmail.com> | 2024-02-25 18:02:26 -0600 |
|---|---|---|
| committer | Peter Maydell <peter.maydell@linaro.org> | 2024-02-27 13:01:42 +0000 |
| commit | b54a9a56796b1c6e27c740d52a88bb7023abb621 (patch) | |
| tree | 6c997b36dd68cc8799c70b58620aa0a8c9f79803 /hw/gpio | |
| parent | 0c8b40db671e2a1336d8effa85e88442af2e0d40 (diff) | |
hw/gpio: Connect SD controller to BCM2838 GPIO
Signed-off-by: Sergey Kambalin <sergey.kambalin@auriga.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-id: 20240226000259.2752893-9-sergey.kambalin@auriga.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Diffstat (limited to 'hw/gpio')
| -rw-r--r-- | hw/gpio/bcm2838_gpio.c | 52 |
1 files changed, 51 insertions, 1 deletions
diff --git a/hw/gpio/bcm2838_gpio.c b/hw/gpio/bcm2838_gpio.c index 69d15dbb49..2ddf62f695 100644 --- a/hw/gpio/bcm2838_gpio.c +++ b/hw/gpio/bcm2838_gpio.c @@ -17,6 +17,7 @@ #include "qapi/error.h" #include "hw/sysbus.h" #include "migration/vmstate.h" +#include "hw/sd/sd.h" #include "hw/gpio/bcm2838_gpio.h" #include "hw/irq.h" @@ -63,6 +64,16 @@ #define BYTES_IN_WORD 4 +/* bcm,function property */ +#define BCM2838_FSEL_GPIO_IN 0 +#define BCM2838_FSEL_GPIO_OUT 1 +#define BCM2838_FSEL_ALT5 2 +#define BCM2838_FSEL_ALT4 3 +#define BCM2838_FSEL_ALT0 4 +#define BCM2838_FSEL_ALT1 5 +#define BCM2838_FSEL_ALT2 6 +#define BCM2838_FSEL_ALT3 7 + static uint32_t gpfsel_get(BCM2838GpioState *s, uint8_t reg) { int i; @@ -86,6 +97,31 @@ static void gpfsel_set(BCM2838GpioState *s, uint8_t reg, uint32_t value) s->fsel[index] = fsel; } } + + /* SD controller selection (48-53) */ + if (s->sd_fsel != BCM2838_FSEL_GPIO_IN + && (s->fsel[48] == BCM2838_FSEL_GPIO_IN) + && (s->fsel[49] == BCM2838_FSEL_GPIO_IN) + && (s->fsel[50] == BCM2838_FSEL_GPIO_IN) + && (s->fsel[51] == BCM2838_FSEL_GPIO_IN) + && (s->fsel[52] == BCM2838_FSEL_GPIO_IN) + && (s->fsel[53] == BCM2838_FSEL_GPIO_IN) + ) { + /* SDHCI controller selected */ + sdbus_reparent_card(s->sdbus_sdhost, s->sdbus_sdhci); + s->sd_fsel = BCM2838_FSEL_GPIO_IN; + } else if (s->sd_fsel != BCM2838_FSEL_ALT0 + && (s->fsel[48] == BCM2838_FSEL_ALT0) /* SD_CLK_R */ + && (s->fsel[49] == BCM2838_FSEL_ALT0) /* SD_CMD_R */ + && (s->fsel[50] == BCM2838_FSEL_ALT0) /* SD_DATA0_R */ + && (s->fsel[51] == BCM2838_FSEL_ALT0) /* SD_DATA1_R */ + && (s->fsel[52] == BCM2838_FSEL_ALT0) /* SD_DATA2_R */ + && (s->fsel[53] == BCM2838_FSEL_ALT0) /* SD_DATA3_R */ + ) { + /* SDHost controller selected */ + sdbus_reparent_card(s->sdbus_sdhci, s->sdbus_sdhost); + s->sd_fsel = BCM2838_FSEL_ALT0; + } } static int gpfsel_is_out(BCM2838GpioState *s, int index) @@ -266,6 +302,11 @@ static void bcm2838_gpio_reset(DeviceState *dev) memset(s->fsel, 0, sizeof(s->fsel)); + s->sd_fsel = 0; + + /* SDHCI is selected by default */ + sdbus_reparent_card(&s->sdbus, s->sdbus_sdhci); + s->lev0 = 0; s->lev1 = 0; @@ -304,6 +345,8 @@ static void bcm2838_gpio_init(Object *obj) DeviceState *dev = DEVICE(obj); SysBusDevice *sbd = SYS_BUS_DEVICE(obj); + qbus_init(&s->sdbus, sizeof(s->sdbus), TYPE_SD_BUS, DEVICE(s), "sd-bus"); + memory_region_init_io(&s->iomem, obj, &bcm2838_gpio_ops, s, "bcm2838_gpio", BCM2838_GPIO_REGS_SIZE); sysbus_init_mmio(sbd, &s->iomem); @@ -312,7 +355,14 @@ static void bcm2838_gpio_init(Object *obj) static void bcm2838_gpio_realize(DeviceState *dev, Error **errp) { - /* Temporary stub. Do nothing */ + BCM2838GpioState *s = BCM2838_GPIO(dev); + Object *obj; + + obj = object_property_get_link(OBJECT(dev), "sdbus-sdhci", &error_abort); + s->sdbus_sdhci = SD_BUS(obj); + + obj = object_property_get_link(OBJECT(dev), "sdbus-sdhost", &error_abort); + s->sdbus_sdhost = SD_BUS(obj); } static void bcm2838_gpio_class_init(ObjectClass *klass, void *data) |