drivers/: Make 'internal_delay' the default unless defined

Drop the explicit need to specify the default 'internal_delay'
callback function pointer in the programmer_entry struct.
This is a reasonable default for every other driver in the
tree with only the two exceptions of ch341a_spi.c and serprog.c.

Thus this simplifies driver development.

Change-Id: I17460bc2c0aebcbb48c8dfa052b260991525cc49
Signed-off-by: Edward O'Callaghan <quasisec@google.com>
Reviewed-on: https://review.coreboot.org/c/flashrom/+/67391
Reviewed-by: Peter Marheine <pmarheine@chromium.org>
Reviewed-by: Angel Pons <th3fanbus@gmail.com>
Reviewed-by: Thomas Heijligen <src@posteo.de>
Reviewed-by: Felix Singer <felixsinger@posteo.net>
Reviewed-by: Nikolai Artemiev <nartemiev@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>

atahpt.c

@@ -122,5 +122,4 @@ const struct programmer_entry programmer_atahpt = {
 	.init			= atahpt_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

atapromise.c

@@ -186,5 +186,4 @@ const struct programmer_entry programmer_atapromise = {
 	.init			= atapromise_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

atavia.c

@@ -191,5 +191,4 @@ const struct programmer_entry programmer_atavia = {
 	.init			= atavia_init,
 	.map_flash_region	= atavia_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

buspirate_spi.c

@@ -716,5 +716,4 @@ const struct programmer_entry programmer_buspirate_spi = {
 	.init			= buspirate_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

dediprog.c

@@ -1321,5 +1321,4 @@ const struct programmer_entry programmer_dediprog = {
 	.init			= dediprog_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

developerbox_spi.c

@@ -195,5 +195,4 @@ const struct programmer_entry programmer_developerbox = {
 	.init			= developerbox_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

digilent_spi.c

@@ -470,5 +470,4 @@ const struct programmer_entry programmer_digilent_spi = {
 	.init			= digilent_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

drkaiser.c

@@ -124,5 +124,4 @@ const struct programmer_entry programmer_drkaiser = {
 	.init			= drkaiser_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

dummyflasher.c

@@ -1426,5 +1426,4 @@ const struct programmer_entry programmer_dummy = {
 	.init			= dummy_init,
 	.map_flash_region	= dummy_map,
 	.unmap_flash_region	= dummy_unmap,
-	.delay			= internal_delay,
 };

flashrom.c

@@ -219,8 +219,12 @@ void programmer_unmap_flash_region(void *virt_addr, size_t len)
 
 void programmer_delay(unsigned int usecs)
 {
-	if (usecs > 0)
-		programmer->delay(usecs);
+	if (usecs > 0) {
+		if (programmer->delay)
+			programmer->delay(usecs);
+		else
+			internal_delay(usecs);
+	}
 }
 
 int read_memmapped(struct flashctx *flash, uint8_t *buf, unsigned int start,
@@ -1419,10 +1423,6 @@ int selfcheck(void)
 			msg_gerr("Programmer %s does not have a valid init function!\n", p->name);
 			ret = 1;
 		}
-		if (p->delay == NULL) {
-			msg_gerr("Programmer %s does not have a valid delay function!\n", p->name);
-			ret = 1;
-		}
 		if (p->map_flash_region == NULL) {
 			msg_gerr("Programmer %s does not have a valid map_flash_region function!\n", p->name);
 			ret = 1;

ft2232_spi.c

@@ -713,5 +713,4 @@ const struct programmer_entry programmer_ft2232_spi = {
 	.init			= ft2232_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

gfxnvidia.c

@@ -152,5 +152,4 @@ const struct programmer_entry programmer_gfxnvidia = {
 	.init			= gfxnvidia_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

internal.c

@@ -349,5 +349,4 @@ const struct programmer_entry programmer_internal = {
 	.init			= internal_init,
 	.map_flash_region	= physmap,
 	.unmap_flash_region	= physunmap,
-	.delay			= internal_delay,
 };

it8212.c

@@ -113,5 +113,4 @@ const struct programmer_entry programmer_it8212 = {
 	.init			= it8212_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

jlink_spi.c

@@ -538,5 +538,4 @@ const struct programmer_entry programmer_jlink_spi = {
 	.devs.note		= "SEGGER J-Link and compatible devices\n",
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

linux_mtd.c

@@ -559,5 +559,4 @@ const struct programmer_entry programmer_linux_mtd = {
 	.init			= linux_mtd_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

linux_spi.c

@@ -253,5 +253,4 @@ const struct programmer_entry programmer_linux_spi = {
 	.init			= linux_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

mediatek_i2c_spi.c

@@ -544,5 +544,4 @@ const struct programmer_entry programmer_mediatek_i2c_spi = {
 	.init			= mediatek_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

mstarddc_spi.c

@@ -257,5 +257,4 @@ const struct programmer_entry programmer_mstarddc_spi = {
 	.init			= mstarddc_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

ni845x_spi.c

@@ -637,5 +637,4 @@ const struct programmer_entry programmer_ni845x_spi = {
 	.init			= ni845x_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nic3com.c

@@ -170,5 +170,4 @@ const struct programmer_entry programmer_nic3com = {
 	.init			= nic3com_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nicintel.c

@@ -135,5 +135,4 @@ const struct programmer_entry programmer_nicintel = {
 	.init			= nicintel_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nicintel_eeprom.c

@@ -540,5 +540,4 @@ const struct programmer_entry programmer_nicintel_eeprom = {
 	.init			= nicintel_ee_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nicintel_spi.c

@@ -339,5 +339,4 @@ const struct programmer_entry programmer_nicintel_spi = {
 	.init			= nicintel_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nicnatsemi.c

@@ -129,5 +129,4 @@ const struct programmer_entry programmer_nicnatsemi = {
 	.init			= nicnatsemi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

nicrealtek.c

@@ -148,5 +148,4 @@ const struct programmer_entry programmer_nicrealtek = {
 	.init			= nicrealtek_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

ogp_spi.c

@@ -180,5 +180,4 @@ const struct programmer_entry programmer_ogp_spi = {
 	.init			= ogp_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

parade_lspcon.c

@@ -509,5 +509,4 @@ const struct programmer_entry programmer_parade_lspcon = {
 	.init			= parade_lspcon_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

pickit2_spi.c

@@ -513,5 +513,4 @@ const struct programmer_entry programmer_pickit2_spi = {
 	.init			= pickit2_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

pony_spi.c

@@ -274,5 +274,4 @@ const struct programmer_entry programmer_pony_spi = {
 	.init			= pony_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

raiden_debug_spi.c

@@ -1651,5 +1651,4 @@ const struct programmer_entry programmer_raiden_debug_spi = {
 	.init			= raiden_debug_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

rayer_spi.c

@@ -331,5 +331,4 @@ const struct programmer_entry programmer_rayer_spi = {
 	.init			= rayer_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

realtek_mst_i2c_spi.c

@@ -546,5 +546,4 @@ const struct programmer_entry programmer_realtek_mst_i2c_spi = {
 	.init			= realtek_mst_i2c_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

satamv.c

@@ -213,5 +213,4 @@ const struct programmer_entry programmer_satamv = {
 	.init			= satamv_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

satasii.c

@@ -155,5 +155,4 @@ const struct programmer_entry programmer_satasii = {
 	.init			= satasii_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

stlinkv3_spi.c

@@ -558,5 +558,4 @@ const struct programmer_entry programmer_stlinkv3_spi = {
 	.init			= stlinkv3_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };

usbblaster_spi.c

@@ -234,5 +234,4 @@ const struct programmer_entry programmer_usbblaster_spi = {
 	.init			= usbblaster_spi_init,
 	.map_flash_region	= fallback_map,
 	.unmap_flash_region	= fallback_unmap,
-	.delay			= internal_delay,
 };