diff options
| author |  Andy Shevchenko <andriy.shevchenko@linux.intel.com>
| 2024-03-06 16:33:22 +0200 |
|---|---|---|
| committer |  Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| 2024-03-06 22:52:13 +0000 |
| commit | 173b097dcc8d74d6e135aed1bad38dbfa21c4d04 (patch) | |
| tree | edae3a2dd1fe8de007fcfafed879c4b8cc9c0c3f /drivers/tty/serial | |
| parent | serial: Lock console when calling into driver before registration (diff) | |
| download | linux-173b097dcc8d74d6e135aed1bad38dbfa21c4d04.tar.gz linux-173b097dcc8d74d6e135aed1bad38dbfa21c4d04.tar.bz2 linux-173b097dcc8d74d6e135aed1bad38dbfa21c4d04.zip | |
serial: 8250_dw: Replace ACPI device check by a quirk
Instead of checking for APMC0D08 ACPI device presence,
use a quirk based on driver data.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20240306143322.3291123-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/tty/serial')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index e369b429e060..1300c92b8702 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -9,7 +9,6 @@ * LCR is written whilst busy. If it is, then a busy detect interrupt is * raised, the LCR needs to be rewritten and the uart status register read. */ -#include <linux/acpi.h> #include <linux/clk.h> #include <linux/delay.h> #include <linux/device.h> @@ -55,6 +54,7 @@ #define DW_UART_QUIRK_ARMADA_38X BIT(1) #define DW_UART_QUIRK_SKIP_SET_RATE BIT(2) #define DW_UART_QUIRK_IS_DMA_FC BIT(3) +#define DW_UART_QUIRK_APMC0D08 BIT(4) static inline struct dw8250_data *clk_to_dw8250_data(struct notifier_block *nb) { @@ -444,33 +444,29 @@ static void dw8250_prepare_rx_dma(struct uart_8250_port *p) static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) { - struct device_node *np = p->dev->of_node; - - if (np) { - unsigned int quirks = data->pdata->quirks; + unsigned int quirks = data->pdata ? data->pdata->quirks : 0; #ifdef CONFIG_64BIT - if (quirks & DW_UART_QUIRK_OCTEON) { - p->serial_in = dw8250_serial_inq; - p->serial_out = dw8250_serial_outq; - p->flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_FIXED_TYPE; - p->type = PORT_OCTEON; - data->skip_autocfg = true; - } + if (quirks & DW_UART_QUIRK_OCTEON) { + p->serial_in = dw8250_serial_inq; + p->serial_out = dw8250_serial_outq; + p->flags = UPF_SKIP_TEST | UPF_SHARE_IRQ | UPF_FIXED_TYPE; + p->type = PORT_OCTEON; + data->skip_autocfg = true; + } #endif - if (quirks & DW_UART_QUIRK_ARMADA_38X) - p->serial_out = dw8250_serial_out38x; - if (quirks & DW_UART_QUIRK_SKIP_SET_RATE) - p->set_termios = dw8250_do_set_termios; - if (quirks & DW_UART_QUIRK_IS_DMA_FC) { - data->data.dma.txconf.device_fc = 1; - data->data.dma.rxconf.device_fc = 1; - data->data.dma.prepare_tx_dma = dw8250_prepare_tx_dma; - data->data.dma.prepare_rx_dma = dw8250_prepare_rx_dma; - } - - } else if (acpi_dev_present("APMC0D08", NULL, -1)) { + if (quirks & DW_UART_QUIRK_ARMADA_38X) + p->serial_out = dw8250_serial_out38x; + if (quirks & DW_UART_QUIRK_SKIP_SET_RATE) + p->set_termios = dw8250_do_set_termios; + if (quirks & DW_UART_QUIRK_IS_DMA_FC) { + data->data.dma.txconf.device_fc = 1; + data->data.dma.rxconf.device_fc = 1; + data->data.dma.prepare_tx_dma = dw8250_prepare_tx_dma; + data->data.dma.prepare_rx_dma = dw8250_prepare_rx_dma; + } + if (quirks & DW_UART_QUIRK_APMC0D08) { p->iotype = UPIO_MEM32; p->regshift = 2; p->serial_in = dw8250_serial_in32; @@ -750,13 +746,18 @@ static const struct of_device_id dw8250_of_match[] = { }; MODULE_DEVICE_TABLE(of, dw8250_of_match); +static const struct dw8250_platform_data dw8250_apmc0d08 = { + .usr_reg = DW_UART_USR, + .quirks = DW_UART_QUIRK_APMC0D08, +}; + static const struct acpi_device_id dw8250_acpi_match[] = { { "80860F0A", (kernel_ulong_t)&dw8250_dw_apb }, { "8086228A", (kernel_ulong_t)&dw8250_dw_apb }, { "AMD0020", (kernel_ulong_t)&dw8250_dw_apb }, { "AMDI0020", (kernel_ulong_t)&dw8250_dw_apb }, { "AMDI0022", (kernel_ulong_t)&dw8250_dw_apb }, - { "APMC0D08", (kernel_ulong_t)&dw8250_dw_apb}, + { "APMC0D08", (kernel_ulong_t)&dw8250_apmc0d08 }, { "BRCM2032", (kernel_ulong_t)&dw8250_dw_apb }, { "HISI0031", (kernel_ulong_t)&dw8250_dw_apb }, { "INT33C4", (kernel_ulong_t)&dw8250_dw_apb }, |