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ARC: [arcfpga] RIP early uart platform device stuff
With ARC uart driver switching to generic earlycon, we no longer need this ugliness. You won't be missed. Signed-off-by: Vineet Gupta <vgupta@synopsys.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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2 changed files with 2 additions and 102 deletions
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@ -41,11 +41,4 @@ config ISS_SMP_EXTN
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-XTL (To enable CPU start/stop/set-PC for another CPU)
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It doesn't provide coherent Caches and/or Atomic Ops (LLOCK/SCOND)
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config ARC_SERIAL_BAUD
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int "UART Baud rate"
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default "115200"
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depends on SERIAL_ARC || SERIAL_ARC_CONSOLE
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help
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Baud rate for the ARC UART
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endif
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@ -22,115 +22,22 @@
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#include <plat/smp.h>
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#include <plat/irq.h>
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/*----------------------- Platform Devices -----------------------------*/
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#if IS_ENABLED(CONFIG_SERIAL_ARC)
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static unsigned long arc_uart_info[] = {
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0, /* uart->is_emulated (runtime @running_on_hw) */
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0, /* uart->port.uartclk */
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0, /* uart->baud */
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0
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};
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#if defined(CONFIG_SERIAL_ARC_CONSOLE)
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/*
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* static platform data - but only for early serial
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* TBD: derive this from a special DT node
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*/
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static struct resource arc_uart0_res[] = {
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{
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.start = UART0_BASE,
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.end = UART0_BASE + 0xFF,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = UART0_IRQ,
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.end = UART0_IRQ,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device arc_uart0_dev = {
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.name = "arc-uart",
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.id = 0,
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.num_resources = ARRAY_SIZE(arc_uart0_res),
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.resource = arc_uart0_res,
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.dev = {
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.platform_data = &arc_uart_info,
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},
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};
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static struct platform_device *fpga_early_devs[] __initdata = {
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&arc_uart0_dev,
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};
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#endif /* CONFIG_SERIAL_ARC_CONSOLE */
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static void arc_fpga_serial_init(void)
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{
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/* To let driver workaround ISS bug: baudh Reg can't be set to 0 */
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arc_uart_info[0] = !running_on_hw;
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arc_uart_info[1] = arc_get_core_freq();
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arc_uart_info[2] = CONFIG_ARC_SERIAL_BAUD;
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#if defined(CONFIG_SERIAL_ARC_CONSOLE)
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early_platform_add_devices(fpga_early_devs,
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ARRAY_SIZE(fpga_early_devs));
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/*
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* ARC console driver registers (build time) as an early platform driver
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* of class "earlyprintk". However it needs explicit cmdline toggle
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* "earlyprintk=ttyARC0" to be successfuly runtime registered.
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* Otherwise the early probe below fails to find the driver
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*/
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early_platform_driver_probe("earlyprintk", 1, 0);
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/*
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* This is to make sure that arc uart would be preferred console
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* despite one/more of following:
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* -command line lacked "console=ttyARC0" or
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* -CONFIG_VT_CONSOLE was enabled (for no reason whatsoever)
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* Note that this needs to be done after above early console is reg,
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* otherwise the early console never gets a chance to run.
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*/
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add_preferred_console("ttyARC", 0, "115200");
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#endif /* CONFIG_SERIAL_ARC_CONSOLE */
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}
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#else /* !IS_ENABLED(CONFIG_SERIAL_ARC) */
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static void arc_fpga_serial_init(void)
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{
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}
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#endif
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static void __init plat_fpga_early_init(void)
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{
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pr_info("[plat-arcfpga]: registering early dev resources\n");
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arc_fpga_serial_init();
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#ifdef CONFIG_ISS_SMP_EXTN
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iss_model_init_early_smp();
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#endif
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}
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static struct of_dev_auxdata plat_auxdata_lookup[] __initdata = {
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#if IS_ENABLED(CONFIG_SERIAL_ARC)
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OF_DEV_AUXDATA("snps,arc-uart", UART0_BASE, "arc-uart", arc_uart_info),
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#endif
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{}
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};
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static void __init plat_fpga_populate_dev(void)
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{
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pr_info("[plat-arcfpga]: registering device resources\n");
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/*
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* Traverses flattened DeviceTree - registering platform devices
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* complete with their resources
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* (if any) complete with their resources
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*/
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of_platform_populate(NULL, of_default_bus_match_table,
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plat_auxdata_lookup, NULL);
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of_platform_populate(NULL, of_default_bus_match_table, NULL, NULL);
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}
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/*----------------------- Machine Descriptions ------------------------------
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