staging: fbtft: Remove ftrace-like logging

Adhere to Linux kernel coding style

Reported by checkpatch:

WARNING: Unnecessary ftrace-like logging - prefer using ftrace
Signed-off-by: Riyan Dhiman <riyandhiman14@gmail.com>
Link: https://lore.kernel.org/r/20240725130351.14877-1-riyandhiman14@gmail.comSigned-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/fbtft/fb_ili9320.c

@@ -35,8 +35,6 @@ static int init_display(struct fbtft_par *par)
 	par->fbtftops.reset(par);
 
 	devcode = read_devicecode(par);
-	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "Device code: 0x%04X\n",
-		      devcode);
 	if ((devcode != 0x0000) && (devcode != 0x9320))
 		dev_warn(par->info->device,
 			 "Unrecognized Device code: 0x%04X (expected 0x9320)\n",

drivers/staging/fbtft/fb_ra8875.c

@@ -41,13 +41,6 @@ static int init_display(struct fbtft_par *par)
 {
 	gpiod_set_value(par->gpio.dc, 1);
 
-	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
-		      "%s()\n", __func__);
-	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
-		      "display size %dx%d\n",
-		par->info->var.xres,
-		par->info->var.yres);
-
 	par->fbtftops.reset(par);
 
 	if ((par->info->var.xres == 320) && (par->info->var.yres == 240)) {

drivers/staging/fbtft/fb_sh1106.c

@@ -88,9 +88,6 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 
 static int blank(struct fbtft_par *par, bool on)
 {
-	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
-
 	write_reg(par, on ? 0xAE : 0xAF);
 
 	return 0;

drivers/staging/fbtft/fb_ssd1289.c

@@ -93,9 +93,6 @@ static int set_var(struct fbtft_par *par)
 {
 	if (par->fbtftops.init_display != init_display) {
 		/* don't risk messing up register 11h */
-		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
-			      "%s: skipping since custom init_display() is used\n",
-			      __func__);
 		return 0;
 	}
 

drivers/staging/fbtft/fb_ssd1306.c

@@ -148,9 +148,6 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 
 static int blank(struct fbtft_par *par, bool on)
 {
-	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
-
 	if (on)
 		write_reg(par, 0xAE);
 	else

drivers/staging/fbtft/fb_ssd1325.c

@@ -72,10 +72,6 @@ static uint8_t rgb565_to_g16(u16 pixel)
 
 static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 {
-	fbtft_par_dbg(DEBUG_SET_ADDR_WIN, par,
-		      "%s(xs=%d, ys=%d, xe=%d, ye=%d)\n", __func__, xs, ys, xe,
-		      ye);
-
 	write_reg(par, 0x75);
 	write_reg(par, 0x00);
 	write_reg(par, 0x3f);
@@ -86,9 +82,6 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 
 static int blank(struct fbtft_par *par, bool on)
 {
-	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
-
 	if (on)
 		write_reg(par, 0xAE);
 	else
@@ -109,8 +102,6 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
 {
 	int i;
 
-	fbtft_par_dbg(DEBUG_INIT_DISPLAY, par, "%s()\n", __func__);
-
 	for (i = 0; i < GAMMA_LEN; i++) {
 		if (i > 0 && curves[i] < 1) {
 			dev_err(par->info->device,

drivers/staging/fbtft/fb_ssd1331.c

@@ -167,8 +167,6 @@ static int set_gamma(struct fbtft_par *par, u32 *curves)
 
 static int blank(struct fbtft_par *par, bool on)
 {
-	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
 	if (on)
 		write_reg(par, 0xAE);
 	else

drivers/staging/fbtft/fb_ssd1351.c

@@ -72,9 +72,6 @@ static int set_var(struct fbtft_par *par)
 
 	if (par->fbtftops.init_display != init_display) {
 		/* don't risk messing up register A0h */
-		fbtft_par_dbg(DEBUG_INIT_DISPLAY, par,
-			      "%s: skipping since custom init_display() is used\n",
-			       __func__);
 		return 0;
 	}
 

drivers/staging/fbtft/fb_uc1611.c

@@ -135,9 +135,6 @@ static void set_addr_win(struct fbtft_par *par, int xs, int ys, int xe, int ye)
 
 static int blank(struct fbtft_par *par, bool on)
 {
-	fbtft_par_dbg(DEBUG_BLANK, par, "(%s=%s)\n",
-		      __func__, on ? "true" : "false");
-
 	if (on)
 		write_reg(par, 0xA8 | 0x00);
 	else

drivers/staging/fbtft/fbtft-bus.c

@@ -129,9 +129,6 @@ int fbtft_write_vmem16_bus8(struct fbtft_par *par, size_t offset, size_t len)
 	int ret = 0;
 	size_t startbyte_size = 0;
 
-	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
-		      __func__, offset, len);
-
 	remain = len / 2;
 	vmem16 = (u16 *)(par->info->screen_buffer + offset);
 
@@ -182,9 +179,6 @@ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
 	int i;
 	int ret = 0;
 
-	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
-		      __func__, offset, len);
-
 	if (!par->txbuf.buf) {
 		dev_err(par->info->device, "%s: txbuf.buf is NULL\n", __func__);
 		return -1;
@@ -232,9 +226,6 @@ int fbtft_write_vmem16_bus16(struct fbtft_par *par, size_t offset, size_t len)
 {
 	u16 *vmem16;
 
-	fbtft_par_dbg(DEBUG_WRITE_VMEM, par, "%s(offset=%zu, len=%zu)\n",
-		      __func__, offset, len);
-
 	vmem16 = (u16 *)(par->info->screen_buffer + offset);
 
 	/* no need for buffered write with 16-bit bus */

drivers/staging/fbtft/fbtft-core.c

@@ -215,8 +215,6 @@ static void fbtft_reset(struct fbtft_par *par)
 	if (!par->gpio.reset)
 		return;
 
-	fbtft_par_dbg(DEBUG_RESET, par, "%s()\n", __func__);
-
 	gpiod_set_value_cansleep(par->gpio.reset, 1);
 	usleep_range(20, 40);
 	gpiod_set_value_cansleep(par->gpio.reset, 0);
@@ -1052,8 +1050,6 @@ static int fbtft_verify_gpios(struct fbtft_par *par)
 	struct fbtft_platform_data *pdata = par->pdata;
 	int i;
 
-	fbtft_par_dbg(DEBUG_VERIFY_GPIOS, par, "%s()\n", __func__);
-
 	if (pdata->display.buswidth != 9 &&  par->startbyte == 0 &&
 	    !par->gpio.dc) {
 		dev_err(par->info->device,
@@ -1157,9 +1153,6 @@ int fbtft_probe_common(struct fbtft_display *display,
 	else
 		dev = &pdev->dev;
 
-	if (unlikely(display->debug & DEBUG_DRIVER_INIT_FUNCTIONS))
-		dev_info(dev, "%s()\n", __func__);
-
 	pdata = dev->platform_data;
 	if (!pdata) {
 		pdata = fbtft_properties_read(dev);

drivers/staging/fbtft/fbtft-sysfs.c

@@ -27,13 +27,9 @@ int fbtft_gamma_parse_str(struct fbtft_par *par, u32 *curves,
 	int curve_counter, value_counter;
 	int _count;
 
-	fbtft_par_dbg(DEBUG_SYSFS, par, "%s() str=\n", __func__);
-
 	if (!str || !curves)
 		return -EINVAL;
 
-	fbtft_par_dbg(DEBUG_SYSFS, par, "%s\n", str);
-
 	tmp = kmemdup(str, size + 1, GFP_KERNEL);
 	if (!tmp)
 		return -ENOMEM;