Merge tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty

Pull tty and serial updates from Greg KH:
 "Here is the big set of tty/serial driver changes for 6.7-rc1. Included
  in here are:

   - console/vgacon cleanups and removals from Arnd

   - tty core and n_tty cleanups from Jiri

   - lots of 8250 driver updates and cleanups

   - sc16is7xx serial driver updates

   - dt binding updates

   - first set of port lock wrapers from Thomas for the printk fixes
     coming in future releases

   - other small serial and tty core cleanups and updates

  All of these have been in linux-next for a while with no reported
  issues"

* tag 'tty-6.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty: (193 commits)
  serdev: Replace custom code with device_match_acpi_handle()
  serdev: Simplify devm_serdev_device_open() function
  serdev: Make use of device_set_node()
  tty: n_gsm: add copyright Siemens Mobility GmbH
  tty: n_gsm: fix race condition in status line change on dead connections
  serial: core: Fix runtime PM handling for pending tx
  vgacon: fix mips/sibyte build regression
  dt-bindings: serial: drop unsupported samsung bindings
  tty: serial: samsung: drop earlycon support for unsupported platforms
  tty: 8250: Add note for PX-835
  tty: 8250: Fix IS-200 PCI ID comment
  tty: 8250: Add Brainboxes Oxford Semiconductor-based quirks
  tty: 8250: Add support for Intashield IX cards
  tty: 8250: Add support for additional Brainboxes PX cards
  tty: 8250: Fix up PX-803/PX-857
  tty: 8250: Fix port count of PX-257
  tty: 8250: Add support for Intashield IS-100
  tty: 8250: Add support for Brainboxes UP cards
  tty: 8250: Add support for additional Brainboxes UC cards
  tty: 8250: Remove UC-257 and UC-431
  ...

6 files changed, 56 insertions, 49 deletions

diff --git a/drivers/video/console/Kconfig b/drivers/video/console/Kconfig
index 30577b1d3de5..83c2d7329ca5 100644
--- a/drivers/video/console/Kconfig
+++ b/drivers/video/console/Kconfig
@@ -7,9 +7,9 @@ menu "Console display driver support"
 
 config VGA_CONSOLE
 	bool "VGA text console" if EXPERT || !X86
-	depends on !4xx && !PPC_8xx && !SPARC && !M68K && !PARISC &&  !SUPERH && \
-		(!ARM || ARCH_FOOTBRIDGE || ARCH_INTEGRATOR || ARCH_NETWINDER) && \
-		!ARM64 && !ARC && !MICROBLAZE && !OPENRISC && !S390 && !UML
+	depends on ALPHA || IA64 || X86 || \
+		(ARM && ARCH_FOOTBRIDGE) || \
+		(MIPS && (MIPS_MALTA || SIBYTE_BCM112X || SIBYTE_SB1250 || SIBYTE_BCM1x80 || SNI_RM))
 	select APERTURE_HELPERS if (DRM || FB || VFIO_PCI_CORE)
 	default y
 	help
@@ -52,7 +52,7 @@ config DUMMY_CONSOLE
 
 config DUMMY_CONSOLE_COLUMNS
 	int "Initial number of console screen columns"
-	depends on DUMMY_CONSOLE && !ARM
+	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
 	default 160 if PARISC
 	default 80
 	help
@@ -62,8 +62,9 @@ config DUMMY_CONSOLE_COLUMNS
 
 config DUMMY_CONSOLE_ROWS
 	int "Initial number of console screen rows"
-	depends on DUMMY_CONSOLE && !ARM
+	depends on DUMMY_CONSOLE && !ARCH_FOOTBRIDGE
 	default 64 if PARISC
+	default 30 if ARM
 	default 25
 	help
 	  On PA-RISC, the default value is 64, which should fit a 1280x1024
diff --git a/drivers/video/console/dummycon.c b/drivers/video/console/dummycon.c
index f1711b2f9ff0..14af5d9e13b0 100644
--- a/drivers/video/console/dummycon.c
+++ b/drivers/video/console/dummycon.c
@@ -18,9 +18,10 @@
  *  Dummy console driver
  */
 
-#if defined(__arm__)
-#define DUMMY_COLUMNS	screen_info.orig_video_cols
-#define DUMMY_ROWS	screen_info.orig_video_lines
+#if defined(CONFIG_ARCH_FOOTBRIDGE) && defined(CONFIG_VGA_CONSOLE)
+#include <asm/vga.h>
+#define DUMMY_COLUMNS	vgacon_screen_info.orig_video_cols
+#define DUMMY_ROWS	vgacon_screen_info.orig_video_lines
 #else
 /* set by Kconfig. Use 80x25 for 640x480 and 160x64 for 1280x1024 */
 #define DUMMY_COLUMNS	CONFIG_DUMMY_CONSOLE_COLUMNS
diff --git a/drivers/video/console/vgacon.c b/drivers/video/console/vgacon.c
index 7ad047bcae17..8ef1579fa57f 100644
--- a/drivers/video/console/vgacon.c
+++ b/drivers/video/console/vgacon.c
@@ -89,6 +89,8 @@ static int 		vga_video_font_height;
 static int 		vga_scan_lines		__read_mostly;
 static unsigned int 	vga_rolled_over; /* last vc_origin offset before wrap */
 
+static struct screen_info *vga_si;
+
 static bool vga_hardscroll_enabled;
 static bool vga_hardscroll_user_enable = true;
 
@@ -153,8 +155,9 @@ static const char *vgacon_startup(void)
 	u16 saved1, saved2;
 	volatile u16 *p;
 
-	if (screen_info.orig_video_isVGA == VIDEO_TYPE_VLFB ||
-	    screen_info.orig_video_isVGA == VIDEO_TYPE_EFI) {
+	if (!vga_si ||
+	    vga_si->orig_video_isVGA == VIDEO_TYPE_VLFB ||
+	    vga_si->orig_video_isVGA == VIDEO_TYPE_EFI) {
 	      no_vga:
 #ifdef CONFIG_DUMMY_CONSOLE
 		conswitchp = &dummy_con;
@@ -164,29 +167,29 @@ static const char *vgacon_startup(void)
 #endif
 	}
 
-	/* boot_params.screen_info reasonably initialized? */
-	if ((screen_info.orig_video_lines == 0) ||
-	    (screen_info.orig_video_cols  == 0))
+	/* vga_si reasonably initialized? */
+	if ((vga_si->orig_video_lines == 0) ||
+	    (vga_si->orig_video_cols  == 0))
 		goto no_vga;
 
 	/* VGA16 modes are not handled by VGACON */
-	if ((screen_info.orig_video_mode == 0x0D) ||	/* 320x200/4 */
-	    (screen_info.orig_video_mode == 0x0E) ||	/* 640x200/4 */
-	    (screen_info.orig_video_mode == 0x10) ||	/* 640x350/4 */
-	    (screen_info.orig_video_mode == 0x12) ||	/* 640x480/4 */
-	    (screen_info.orig_video_mode == 0x6A))	/* 800x600/4 (VESA) */
+	if ((vga_si->orig_video_mode == 0x0D) ||	/* 320x200/4 */
+	    (vga_si->orig_video_mode == 0x0E) ||	/* 640x200/4 */
+	    (vga_si->orig_video_mode == 0x10) ||	/* 640x350/4 */
+	    (vga_si->orig_video_mode == 0x12) ||	/* 640x480/4 */
+	    (vga_si->orig_video_mode == 0x6A))	/* 800x600/4 (VESA) */
 		goto no_vga;
 
-	vga_video_num_lines = screen_info.orig_video_lines;
-	vga_video_num_columns = screen_info.orig_video_cols;
+	vga_video_num_lines = vga_si->orig_video_lines;
+	vga_video_num_columns = vga_si->orig_video_cols;
 	vgastate.vgabase = NULL;
 
-	if (screen_info.orig_video_mode == 7) {
+	if (vga_si->orig_video_mode == 7) {
 		/* Monochrome display */
 		vga_vram_base = 0xb0000;
 		vga_video_port_reg = VGA_CRT_IM;
 		vga_video_port_val = VGA_CRT_DM;
-		if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+		if ((vga_si->orig_video_ega_bx & 0xff) != 0x10) {
 			static struct resource ega_console_resource =
 			    { .name	= "ega",
 			      .flags	= IORESOURCE_IO,
@@ -223,12 +226,12 @@ static const char *vgacon_startup(void)
 		vga_vram_base = 0xb8000;
 		vga_video_port_reg = VGA_CRT_IC;
 		vga_video_port_val = VGA_CRT_DC;
-		if ((screen_info.orig_video_ega_bx & 0xff) != 0x10) {
+		if ((vga_si->orig_video_ega_bx & 0xff) != 0x10) {
 			int i;
 
 			vga_vram_size = 0x8000;
 
-			if (!screen_info.orig_video_isVGA) {
+			if (!vga_si->orig_video_isVGA) {
 				static struct resource ega_console_resource =
 				    { .name	= "ega",
 				      .flags	= IORESOURCE_IO,
@@ -319,14 +322,14 @@ static const char *vgacon_startup(void)
 	    || vga_video_type == VIDEO_TYPE_VGAC
 	    || vga_video_type == VIDEO_TYPE_EGAM) {
 		vga_hardscroll_enabled = vga_hardscroll_user_enable;
-		vga_default_font_height = screen_info.orig_video_points;
-		vga_video_font_height = screen_info.orig_video_points;
+		vga_default_font_height = vga_si->orig_video_points;
+		vga_video_font_height = vga_si->orig_video_points;
 		/* This may be suboptimal but is a safe bet - go with it */
 		vga_scan_lines =
 		    vga_video_font_height * vga_video_num_lines;
 	}
 
-	vgacon_xres = screen_info.orig_video_cols * VGA_FONTWIDTH;
+	vgacon_xres = vga_si->orig_video_cols * VGA_FONTWIDTH;
 	vgacon_yres = vga_scan_lines;
 
 	return display_desc;
@@ -371,7 +374,7 @@ static void vgacon_init(struct vc_data *c, int init)
 	/* Only set the default if the user didn't deliberately override it */
 	if (global_cursor_default == -1)
 		global_cursor_default =
-			!(screen_info.flags & VIDEO_FLAGS_NOCURSOR);
+			!(vga_si->flags & VIDEO_FLAGS_NOCURSOR);
 }
 
 static void vgacon_deinit(struct vc_data *c)
@@ -589,7 +592,7 @@ static int vgacon_switch(struct vc_data *c)
 {
 	int x = c->vc_cols * VGA_FONTWIDTH;
 	int y = c->vc_rows * c->vc_cell_height;
-	int rows = screen_info.orig_video_lines * vga_default_font_height/
+	int rows = vga_si->orig_video_lines * vga_default_font_height/
 		c->vc_cell_height;
 	/*
 	 * We need to save screen size here as it's the only way
@@ -609,7 +612,7 @@ static int vgacon_switch(struct vc_data *c)
 
 		if ((vgacon_xres != x || vgacon_yres != y) &&
 		    (!(vga_video_num_columns % 2) &&
-		     vga_video_num_columns <= screen_info.orig_video_cols &&
+		     vga_video_num_columns <= vga_si->orig_video_cols &&
 		     vga_video_num_lines <= rows))
 			vgacon_doresize(c, c->vc_cols, c->vc_rows);
 	}
@@ -1056,13 +1059,13 @@ static int vgacon_resize(struct vc_data *c, unsigned int width,
 		 * Ho ho!  Someone (svgatextmode, eh?) may have reprogrammed
 		 * the video mode!  Set the new defaults then and go away.
 		 */
-		screen_info.orig_video_cols = width;
-		screen_info.orig_video_lines = height;
+		vga_si->orig_video_cols = width;
+		vga_si->orig_video_lines = height;
 		vga_default_font_height = c->vc_cell_height;
 		return 0;
 	}
-	if (width % 2 || width > screen_info.orig_video_cols ||
-	    height > (screen_info.orig_video_lines * vga_default_font_height)/
+	if (width % 2 || width > vga_si->orig_video_cols ||
+	    height > (vga_si->orig_video_lines * vga_default_font_height)/
 	    c->vc_cell_height)
 		return -EINVAL;
 
@@ -1092,8 +1095,8 @@ static void vgacon_save_screen(struct vc_data *c)
 		 * console initialization routines.
 		 */
 		vga_bootup_console = 1;
-		c->state.x = screen_info.orig_x;
-		c->state.y = screen_info.orig_y;
+		c->state.x = vga_si->orig_x;
+		c->state.y = vga_si->orig_y;
 	}
 
 	/* We can't copy in more than the size of the video buffer,
@@ -1186,4 +1189,13 @@ const struct consw vga_con = {
 };
 EXPORT_SYMBOL(vga_con);
 
+void vgacon_register_screen(struct screen_info *si)
+{
+	if (!si || vga_si)
+		return;
+
+	conswitchp = &vga_con;
+	vga_si = si;
+}
+
 MODULE_LICENSE("GPL");
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 96fdc7301481..53693c826ebd 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -364,7 +364,7 @@ config FB_IMSTT
 
 config FB_VGA16
 	tristate "VGA 16-color graphics support"
-	depends on FB && (X86 || PPC)
+	depends on FB && X86
 	select APERTURE_HELPERS
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
diff --git a/drivers/video/fbdev/hyperv_fb.c b/drivers/video/fbdev/hyperv_fb.c
index 2e27c6bd8044..bf59daf862fc 100644
--- a/drivers/video/fbdev/hyperv_fb.c
+++ b/drivers/video/fbdev/hyperv_fb.c
@@ -1010,7 +1010,7 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
 			goto getmem_done;
 		}
 		pr_info("Unable to allocate enough contiguous physical memory on Gen 1 VM. Using MMIO instead.\n");
-	} else {
+	} else if (IS_ENABLED(CONFIG_SYSFB)) {
 		base = screen_info.lfb_base;
 		size = screen_info.lfb_size;
 	}
@@ -1056,13 +1056,13 @@ static int hvfb_getmem(struct hv_device *hdev, struct fb_info *info)
 getmem_done:
 	aperture_remove_conflicting_devices(base, size, KBUILD_MODNAME);
 
-	if (gen2vm) {
+	if (!gen2vm) {
+		pci_dev_put(pdev);
+	} else if (IS_ENABLED(CONFIG_SYSFB)) {
 		/* framebuffer is reallocated, clear screen_info to avoid misuse from kexec */
 		screen_info.lfb_size = 0;
 		screen_info.lfb_base = 0;
 		screen_info.orig_video_isVGA = 0;
-	} else {
-		pci_dev_put(pdev);
 	}
 
 	return 0;
diff --git a/drivers/video/fbdev/vga16fb.c b/drivers/video/fbdev/vga16fb.c
index ac21942d5311..b485e9198201 100644
--- a/drivers/video/fbdev/vga16fb.c
+++ b/drivers/video/fbdev/vga16fb.c
@@ -185,8 +185,6 @@ static inline void setindex(int index)
 /* Check if the video mode is supported by the driver */
 static inline int check_mode_supported(const struct screen_info *si)
 {
-	/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
-#if defined(CONFIG_X86)
 	/* only EGA and VGA in 16 color graphic mode are supported */
 	if (si->orig_video_isVGA != VIDEO_TYPE_EGAC &&
 	    si->orig_video_isVGA != VIDEO_TYPE_VGAC)
@@ -197,7 +195,7 @@ static inline int check_mode_supported(const struct screen_info *si)
 	    si->orig_video_mode != 0x10 &&	/* 640x350/4 (EGA) */
 	    si->orig_video_mode != 0x12)	/* 640x480/4 (VGA) */
 		return -ENODEV;
-#endif
+
 	return 0;
 }
 
@@ -1340,12 +1338,7 @@ static int vga16fb_probe(struct platform_device *dev)
 	printk(KERN_INFO "vga16fb: mapped to 0x%p\n", info->screen_base);
 	par = info->par;
 
-#if defined(CONFIG_X86)
 	par->isVGA = si->orig_video_isVGA == VIDEO_TYPE_VGAC;
-#else
-	/* non-x86 architectures treat orig_video_isVGA as a boolean flag */
-	par->isVGA = si->orig_video_isVGA;
-#endif
 	par->palette_blanked = 0;
 	par->vesa_blanked = 0;