pony_spi.c: Retype appropriate variables with bool

Use the bool type instead of an integer for appropriate variables and
attributes, since this represents their purpose much better.

Signed-off-by: Felix Singer <felixsinger@posteo.net>
Change-Id: Iecd98c391a74794647caeeb2715707ccd681463c
Reviewed-on: https://review.coreboot.org/c/flashrom/+/66875
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Anastasia Klimchuk <aklm@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
---
M pony_spi.c
1 file changed, 46 insertions(+), 28 deletions(-)

diff --git a/pony_spi.c b/pony_spi.c
index 04c3236..ebeac94 100644
--- a/pony_spi.c
+++ b/pony_spi.c
@@ -36,6 +36,7 @@
  * DCE  >-------> DSR
  */
 
+#include <stdbool.h>
 #include <stdlib.h>
 #include <strings.h>
 #include <string.h>
@@ -51,11 +52,11 @@
 
 struct pony_spi_data {
 	/* Pins for master->slave direction */
-	int negate_cs;
-	int negate_sck;
-	int negate_mosi;
+	bool negate_cs;
+	bool negate_sck;
+	bool negate_mosi;
 	/* Pins for slave->master direction */
-	int negate_miso;
+	bool negate_miso;
 };
 
 static void pony_bitbang_set_cs(int val, void *spi_data)
@@ -120,14 +121,14 @@
 	return ret;
 }
 
-static int get_params(const struct programmer_cfg *cfg, enum pony_type *type, int *have_device)
+static int get_params(const struct programmer_cfg *cfg, enum pony_type *type, bool *have_device)
 {
 	char *arg = NULL;
 	int ret = 0;
 
 	/* defaults */
 	*type = TYPE_SI_PROG;
-	*have_device = 0;
+	*have_device = false;
 
 	/* The parameter is in format "dev=/dev/device,type=serbang" */
 	arg = extract_programmer_param_str(cfg, "dev");
@@ -136,7 +137,7 @@
 		if (sp_fd == SER_INV_FD)
 			ret = 1;
 		else
-			(*have_device)++;
+			*have_device = true;
 	}
 	free(arg);
 
@@ -164,8 +165,8 @@
 	int i, data_out;
 	enum pony_type type;
 	const char *name;
-	int have_device;
-	int have_prog = 0;
+	bool have_device;
+	bool have_prog = false;
 
 	if (get_params(cfg, &type, &have_device)) {
 		serialport_shutdown(NULL);
@@ -184,10 +185,10 @@
 		serialport_shutdown(NULL);
 		return 1;
 	}
-	data->negate_cs = 1;
-	data->negate_sck = 0;
-	data->negate_mosi = 0;
-	data->negate_miso = 0;
+	data->negate_cs = true;
+	data->negate_sck = false;
+	data->negate_mosi = false;
+	data->negate_miso = false;
 
 	if (register_shutdown(pony_spi_shutdown, data) != 0) {
 		free(data);
@@ -200,25 +201,25 @@
 	 */
 	switch (type) {
 	case TYPE_AJAWE:
-		data->negate_cs = 1;
-		data->negate_sck = 1;
-		data->negate_mosi = 1;
-		data->negate_miso = 1;
+		data->negate_cs = true;
+		data->negate_sck = true;
+		data->negate_mosi = true;
+		data->negate_miso = true;
 		name = "AJAWe";
 		break;
 	case TYPE_SERBANG:
-		data->negate_cs = 0;
-		data->negate_sck = 0;
-		data->negate_mosi = 0;
-		data->negate_miso = 1;
+		data->negate_cs = false;
+		data->negate_sck = false;
+		data->negate_mosi = false;
+		data->negate_miso = true;
 		name = "serbang";
 		break;
 	default:
 	case TYPE_SI_PROG:
-		data->negate_cs = 1;
-		data->negate_sck = 0;
-		data->negate_mosi = 0;
-		data->negate_miso = 0;
+		data->negate_cs = true;
+		data->negate_sck = false;
+		data->negate_mosi = false;
+		data->negate_miso = false;
 		name = "SI-Prog";
 		break;
 	}
@@ -233,12 +234,12 @@
 
 	switch (type) {
 	case TYPE_AJAWE:
-		have_prog = 1;
+		have_prog = true;
 		break;
 	case TYPE_SI_PROG:
 	case TYPE_SERBANG:
 	default:
-		have_prog = 1;
+		have_prog = true;
 		/* We toggle RTS/SCK a few times and see if DSR changes too. */
 		for (i = 1; i <= 10; i++) {
 			data_out = i & 1;
@@ -247,7 +248,7 @@
 
 			/* If DSR does not change, we are not connected to what we think */
 			if (data_out != sp_get_pin(PIN_DSR)) {
-				have_prog = 0;
+				have_prog = false;
 				break;
 			}
 		}

