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| author | Furquan Shaikh <furquan@google.com> | 2020-06-03 16:50:32 -0700 |
|---|---|---|
| committer | Patrick Georgi <pgeorgi@google.com> | 2020-06-06 09:44:39 +0000 |
| commit | b07e262c48eb964617c4413a88c37f0db31805b6 (patch) | |
| tree | 7e97d8394f48b7ffd1460c3e09e1ce71dea0748e /src | |
| parent | 071182ade30da4bdba6da03ce79abf8df91ee480 (diff) | |
| download | coreboot-b07e262c48eb964617c4413a88c37f0db31805b6.tar.xz | |
soc/amd/picasso: Add device operations for UART MMIO devices
This change adds device_operations for UART MMIO devices that provides
following operations:
1. uart_acpi_name: Returns ACPI name of UART device. Generation of
UART device node is not yet moved to SSDT, but will be done in
follow-up CLs.
2. scan_bus: Uses scan_static_bus to scan devices added under the UART
devices. This allows mainboard to add devices under the UART MMIO
device.
Change-Id: I18abbe88952e7006668657eb1d0c177e53e95850
Signed-off-by: Furquan Shaikh <furquan@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/42068
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Raul Rangel <rrangel@chromium.org>
Diffstat (limited to 'src')
| -rw-r--r-- | src/soc/amd/picasso/chip.c | 8 | ||||
| -rw-r--r-- | src/soc/amd/picasso/uart.c | 23 |
2 files changed, 31 insertions, 0 deletions
diff --git a/src/soc/amd/picasso/chip.c b/src/soc/amd/picasso/chip.c index d364b9a88c..2e5fae58e5 100644 --- a/src/soc/amd/picasso/chip.c +++ b/src/soc/amd/picasso/chip.c @@ -15,6 +15,8 @@ /* Supplied by i2c.c */ extern struct device_operations picasso_i2c_mmio_ops; +/* Supplied by uart.c */ +extern struct device_operations picasso_uart_mmio_ops; struct device_operations cpu_bus_ops = { .read_resources = noop_read_resources, @@ -126,6 +128,12 @@ static void set_mmio_dev_ops(struct device *dev) case APU_I2C4_BASE: dev->ops = &picasso_i2c_mmio_ops; break; + case APU_UART0_BASE: + case APU_UART1_BASE: + case APU_UART2_BASE: + case APU_UART3_BASE: + dev->ops = &picasso_uart_mmio_ops; + break; } } diff --git a/src/soc/amd/picasso/uart.c b/src/soc/amd/picasso/uart.c index 6ae79b9524..b1331ec603 100644 --- a/src/soc/amd/picasso/uart.c +++ b/src/soc/amd/picasso/uart.c @@ -74,3 +74,26 @@ unsigned int uart_platform_refclk(void) { return CONFIG(PICASSO_UART_48MZ) ? 48000000 : 115200 * 16; } + +static const char *uart_acpi_name(const struct device *dev) +{ + switch (dev->path.mmio.addr) { + case APU_UART0_BASE: + return "FUR0"; + case APU_UART1_BASE: + return "FUR1"; + case APU_UART2_BASE: + return "FUR2"; + case APU_UART3_BASE: + return "FUR3"; + default: + return NULL; + } +} + +struct device_operations picasso_uart_mmio_ops = { + .read_resources = noop_read_resources, + .set_resources = noop_set_resources, + .scan_bus = scan_static_bus, + .acpi_name = uart_acpi_name, +}; |