drm/tinydrm: Move tinydrm_machine_little_endian() (f729d8d9) · Commits · 戴 / test

drivers/gpu/drm/tinydrm/mipi-dbi.c

+12 −3

Original line number	Diff line number	Diff line
		@@ -628,6 +628,15 @@ u32 mipi_dbi_spi_cmd_max_speed(struct spi_device *spi, size_t len)
		}
		EXPORT_SYMBOL(mipi_dbi_spi_cmd_max_speed);

		static bool mipi_dbi_machine_little_endian(void)
		{
		#if defined(__LITTLE_ENDIAN)
		return true;
		#else
		return false;
		#endif
		}

		/*
		* MIPI DBI Type C Option 1
		*
		@@ -650,7 +659,7 @@ static int mipi_dbi_spi1e_transfer(struct mipi_dbi *mipi, int dc,
		const void *buf, size_t len,
		unsigned int bpw)
		{
		bool swap_bytes = (bpw == 16 && tinydrm_machine_little_endian());
		bool swap_bytes = (bpw == 16 && mipi_dbi_machine_little_endian());
		size_t chunk, max_chunk = mipi->tx_buf9_len;
		struct spi_device *spi = mipi->spi;
		struct spi_transfer tr = {
		@@ -799,7 +808,7 @@ static int mipi_dbi_spi1_transfer(struct mipi_dbi *mipi, int dc,
		size_t chunk = min(len, max_chunk);
		unsigned int i;

		if (bpw == 16 && tinydrm_machine_little_endian()) {
		if (bpw == 16 && mipi_dbi_machine_little_endian()) {
		for (i = 0; i < (chunk * 2); i += 2) {
		dst16[i] = *src16 >> 8;
		dst16[i + 1] = *src16++ & 0xFF;
		@@ -991,7 +1000,7 @@ int mipi_dbi_spi_init(struct spi_device spi, struct mipi_dbi mipi,
		if (dc) {
		mipi->command = mipi_dbi_typec3_command;
		mipi->dc = dc;
		if (tinydrm_machine_little_endian() && !spi_is_bpw_supported(spi, 16))
		if (mipi_dbi_machine_little_endian() && !spi_is_bpw_supported(spi, 16))
		mipi->swap_bytes = true;
		} else {
		mipi->command = mipi_dbi_typec1_command;

+0 −15

Original line number	Diff line number	Diff line
		@@ -15,21 +15,6 @@ struct drm_simple_display_pipe;
		struct drm_simple_display_pipe_funcs;
		struct device;

		/**
		* tinydrm_machine_little_endian - Machine is little endian
		*
		* Returns:
		* true if defined(__LITTLE_ENDIAN), false otherwise
		*/
		static inline bool tinydrm_machine_little_endian(void)
		{
		#if defined(__LITTLE_ENDIAN)
		return true;
		#else
		return false;
		#endif
		}

		int tinydrm_display_pipe_init(struct drm_device *drm,
		struct drm_simple_display_pipe *pipe,
		const struct drm_simple_display_pipe_funcs *funcs,