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sdhci: implement UHS-I voltage switch

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[based on a patch from Alistair Francis <alistair.francis@xilinx.com>
 from qemu/xilinx tag xilinx-v2015.2]
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@xilinx.com>
Message-Id: <20180208164818.7961-22-f4bug@amsat.org>
This commit is contained in:
Philippe Mathieu-Daudé 2018-02-08 13:48:09 -03:00 • committed by Paolo Bonzini
parent 238cd93567
commit 0034ebe6ee
6 changed files with 55 additions and 1 deletions
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13
hw/sd/sd.c
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@ -128,6 +128,18 @@ struct SDState {
bool enable;
};
static void sd_set_voltage(SDState *sd, uint16_t millivolts)
{
switch (millivolts) {
case 3001 ... 3600: /* SD_VOLTAGE_3_3V */
case 2001 ... 3000: /* SD_VOLTAGE_3_0V */
break;
default:
qemu_log_mask(LOG_GUEST_ERROR, "SD card voltage not supported: %.3fV",
millivolts / 1000.f);
}
}
static void sd_set_mode(SDState *sd)
{
switch (sd->state) {
@ -1926,6 +1938,7 @@ static void sd_class_init(ObjectClass *klass, void *data)
dc->reset = sd_reset;
dc->bus_type = TYPE_SD_BUS;
sc->set_voltage = sd_set_voltage;
sc->do_command = sd_do_command;
sc->write_data = sd_write_data;
sc->read_data = sd_read_data;