drivers: mipi_dbi: reduce the RAM overhead
Constify the config and reorder the data fields for better packing.
This reduces the RAM usage of `mipi_dbi_spi` by 20 bytes.
Signed-off-by: Michael Hope <mlhx@google.com>
diff --git a/drivers/mipi_dbi/mipi_dbi_nxp_lcdic.c b/drivers/mipi_dbi/mipi_dbi_nxp_lcdic.c
index 3db7c7a..7a44bee 100644
--- a/drivers/mipi_dbi/mipi_dbi_nxp_lcdic.c
+++ b/drivers/mipi_dbi/mipi_dbi_nxp_lcdic.c
@@ -660,7 +660,7 @@
return 0;
}
-static struct mipi_dbi_driver_api mipi_dbi_lcdic_driver_api = {
+static const struct mipi_dbi_driver_api mipi_dbi_lcdic_driver_api = {
.command_write = mipi_dbi_lcdic_write_cmd,
.write_display = mipi_dbi_lcdic_write_display,
.reset = mipi_dbi_lcdic_reset,
diff --git a/drivers/mipi_dbi/mipi_dbi_smartbond.c b/drivers/mipi_dbi/mipi_dbi_smartbond.c
index 038ac8e..9569020 100644
--- a/drivers/mipi_dbi/mipi_dbi_smartbond.c
+++ b/drivers/mipi_dbi/mipi_dbi_smartbond.c
@@ -536,7 +536,7 @@
return ret;
}
-static struct mipi_dbi_driver_api mipi_dbi_smartbond_driver_api = {
+static const struct mipi_dbi_driver_api mipi_dbi_smartbond_driver_api = {
#if MIPI_DBI_SMARTBOND_IS_RESET_AVAILABLE
.reset = mipi_dbi_smartbond_reset,
#endif
diff --git a/drivers/mipi_dbi/mipi_dbi_spi.c b/drivers/mipi_dbi/mipi_dbi_spi.c
index e2b3aef..13d4e30 100644
--- a/drivers/mipi_dbi/mipi_dbi_spi.c
+++ b/drivers/mipi_dbi/mipi_dbi_spi.c
@@ -23,9 +23,9 @@
};
struct mipi_dbi_spi_data {
+ struct k_mutex lock;
/* Used for 3 wire mode */
uint16_t spi_byte;
- struct k_mutex lock;
};
/* Expands to 1 if the node does not have the `write-only` property */
@@ -313,7 +313,7 @@
return 0;
}
-static struct mipi_dbi_driver_api mipi_dbi_spi_driver_api = {
+static const struct mipi_dbi_driver_api mipi_dbi_spi_driver_api = {
.reset = mipi_dbi_spi_reset,
.command_write = mipi_dbi_spi_command_write,
.write_display = mipi_dbi_spi_write_display,
