linux-kernel - [RFC PATCH v2 2/5] newport_con: Allow to get max font width and height

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Date: Mon, 26 Feb 2024 16:21:11 +0100
From: Alexey Gladkov <legion@...nel.org>
To: LKML <linux-kernel@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Jiri Slaby <jirislaby@...nel.org>
Cc: linux-api@...r.kernel.org
Subject: [RFC PATCH v2 2/5] newport_con: Allow to get max font width and height

Signed-off-by: Alexey Gladkov <legion@...nel.org>
---
 drivers/video/console/newport_con.c | 21 +++++++++++++++++----
 1 file changed, 17 insertions(+), 4 deletions(-)

diff --git a/drivers/video/console/newport_con.c b/drivers/video/console/newport_con.c
index e8e4f82cd4a1..87f174a95fa8 100644
--- a/drivers/video/console/newport_con.c
+++ b/drivers/video/console/newport_con.c
@@ -33,6 +33,9 @@
 
 #define NEWPORT_LEN	0x10000
 
+#define NEWPORT_MAX_FONT_WIDTH 8
+#define NEWPORT_MAX_FONT_HEIGHT 16
+
 #define FONT_DATA ((unsigned char *)font_vga_8x16.data)
 
 static unsigned char *font_data[MAX_NR_CONSOLES];
@@ -328,8 +331,8 @@ static void newport_init(struct vc_data *vc, int init)
 {
 	int cols, rows;
 
-	cols = newport_xsize / 8;
-	rows = newport_ysize / 16;
+	cols = newport_xsize / NEWPORT_MAX_FONT_WIDTH;
+	rows = newport_ysize / NEWPORT_MAX_FONT_HEIGHT;
 	vc->vc_can_do_color = 1;
 	if (init) {
 		vc->vc_cols = cols;
@@ -507,8 +510,8 @@ static int newport_set_font(int unit, struct console_font *op, unsigned int vpit
 
 	/* ladis: when I grow up, there will be a day... and more sizes will
 	 * be supported ;-) */
-	if ((w != 8) || (h != 16) || (vpitch != 32)
-	    || (op->charcount != 256 && op->charcount != 512))
+	if ((w != NEWPORT_MAX_FONT_WIDTH) || (h != NEWPORT_MAX_FONT_HEIGHT) ||
+	    (vpitch != 32) || (op->charcount != 256 && op->charcount != 512))
 		return -EINVAL;
 
 	if (!(new_data = kmalloc(FONT_EXTRA_WORDS * sizeof(int) + size,
@@ -569,6 +572,15 @@ static int newport_font_default(struct vc_data *vc, struct console_font *op, cha
 	return newport_set_def_font(vc->vc_num, op);
 }
 
+static int newport_font_info(struct vc_data *vc, struct console_font_info *info)
+{
+	info->min_width = info->max_width = NEWPORT_MAX_FONT_WIDTH;
+	info->min_height = info->max_height = NEWPORT_MAX_FONT_HEIGHT;
+	info->flags = KD_FONT_INFO_FLAG_LOW_SIZE | KD_FONT_INFO_FLAG_HIGH_SIZE;
+
+	return 0;
+}
+
 static int newport_font_set(struct vc_data *vc, struct console_font *font,
 			    unsigned int vpitch, unsigned int flags)
 {
@@ -688,6 +700,7 @@ const struct consw newport_con = {
 	.con_scroll	  = newport_scroll,
 	.con_switch	  = newport_switch,
 	.con_blank	  = newport_blank,
+	.con_font_info	  = newport_font_info,
 	.con_font_set	  = newport_font_set,
 	.con_font_default = newport_font_default,
 	.con_save_screen  = newport_save_screen
-- 
2.44.0