[U-Boot] [PATCH v2] sunxi: video: Improve monitor video-mode option handling
Hans de Goede
hdegoede at redhat.com
Sun Dec 28 11:58:37 CET 2014
Add a sunxi_monitor enum and parse the monitor option string into this enum
once, rather then doing strcmp-s on it in various places. This also adds
checking for it being a valid value.
This also adds new "none" and "lcd" values in preparation for lcd support.
Signed-off-by: Hans de Goede <hdegoede at redhat.com>
---
Changes in v2:
-Add a sunxi_get_mon_desc helper to convert from the monitor enum to strings
---
drivers/video/sunxi_display.c | 63 ++++++++++++++++++++++++++++++++-----------
1 file changed, 47 insertions(+), 16 deletions(-)
diff --git a/drivers/video/sunxi_display.c b/drivers/video/sunxi_display.c
index ced5ce5..84ecef9 100644
--- a/drivers/video/sunxi_display.c
+++ b/drivers/video/sunxi_display.c
@@ -21,9 +21,19 @@
DECLARE_GLOBAL_DATA_PTR;
+enum sunxi_monitor {
+ sunxi_monitor_none,
+ sunxi_monitor_dvi,
+ sunxi_monitor_hdmi,
+ sunxi_monitor_lcd,
+ sunxi_monitor_vga,
+};
+#define SUNXI_MONITOR_LAST sunxi_monitor_vga
+
struct sunxi_display {
GraphicDevice graphic_device;
bool enabled;
+ enum sunxi_monitor monitor;
} sunxi_display;
/*
@@ -159,7 +169,7 @@ static int sunxi_hdmi_edid_get_block(int block, u8 *buf)
return r;
}
-static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode, char *monitor)
+static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode)
{
struct edid1_info edid1;
struct edid_cea861_info cea681[4];
@@ -241,14 +251,14 @@ static int sunxi_hdmi_edid_get_mode(struct ctfb_res_modes *mode, char *monitor)
}
/* Check for basic audio support, if found enable hdmi output */
- strcpy(monitor, "dvi");
+ sunxi_display.monitor = sunxi_monitor_dvi;
for (i = 0; i < ext_blocks; i++) {
if (cea681[i].extension_tag != EDID_CEA861_EXTENSION_TAG ||
cea681[i].revision < 2)
continue;
if (EDID_CEA861_SUPPORTS_BASIC_AUDIO(cea681[i]))
- strcpy(monitor, "hdmi");
+ sunxi_display.monitor = sunxi_monitor_hdmi;
}
return 0;
@@ -489,7 +499,7 @@ static void sunxi_hdmi_setup_info_frames(const struct ctfb_res_modes *mode)
}
static void sunxi_hdmi_mode_set(const struct ctfb_res_modes *mode,
- bool hdmi_mode, int clk_div, int clk_double)
+ int clk_div, int clk_double)
{
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
@@ -498,7 +508,7 @@ static void sunxi_hdmi_mode_set(const struct ctfb_res_modes *mode,
/* Write clear interrupt status bits */
writel(SUNXI_HDMI_IRQ_STATUS_BITS, &hdmi->irq);
- if (hdmi_mode)
+ if (sunxi_display.monitor == sunxi_monitor_hdmi)
sunxi_hdmi_setup_info_frames(mode);
/* Set input sync enable */
@@ -549,7 +559,7 @@ static void sunxi_engines_init(void)
#endif
}
-static void sunxi_mode_set(const struct ctfb_res_modes *mode, char *monitor,
+static void sunxi_mode_set(const struct ctfb_res_modes *mode,
unsigned int address)
{
struct sunxi_de_be_reg * const de_be =
@@ -559,11 +569,10 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode, char *monitor,
struct sunxi_hdmi_reg * const hdmi =
(struct sunxi_hdmi_reg *)SUNXI_HDMI_BASE;
int clk_div, clk_double;
- bool hdmi_mode = strcmp(monitor, "hdmi") == 0;
sunxi_composer_mode_set(mode, address);
sunxi_lcdc_mode_set(mode, &clk_div, &clk_double);
- sunxi_hdmi_mode_set(mode, hdmi_mode, clk_div, clk_double);
+ sunxi_hdmi_mode_set(mode, clk_div, clk_double);
setbits_le32(&de_be->reg_ctrl, SUNXI_DE_BE_REG_CTRL_LOAD_REGS);
setbits_le32(&de_be->mode, SUNXI_DE_BE_MODE_START);
@@ -574,6 +583,18 @@ static void sunxi_mode_set(const struct ctfb_res_modes *mode, char *monitor,
setbits_le32(&hdmi->video_ctrl, SUNXI_HDMI_VIDEO_CTRL_ENABLE);
}
+static const char *sunxi_get_mon_desc(enum sunxi_monitor monitor)
+{
+ switch (monitor) {
+ case sunxi_monitor_none: return "none";
+ case sunxi_monitor_dvi: return "dvi";
+ case sunxi_monitor_hdmi: return "hdmi";
+ case sunxi_monitor_lcd: return "lcd";
+ case sunxi_monitor_vga: return "vga";
+ }
+ return NULL; /* never reached */
+}
+
void *video_hw_init(void)
{
static GraphicDevice *graphic_device = &sunxi_display.graphic_device;
@@ -581,8 +602,8 @@ void *video_hw_init(void)
struct ctfb_res_modes edid_mode;
const char *options;
unsigned int depth;
- int ret, hpd, edid;
- char monitor[16];
+ int i, ret, hpd, edid;
+ char mon[16];
memset(&sunxi_display, 0, sizeof(struct sunxi_display));
@@ -593,8 +614,18 @@ void *video_hw_init(void)
video_get_ctfb_res_modes(RES_MODE_1024x768, 24, &mode, &depth, &options);
hpd = video_get_option_int(options, "hpd", 1);
edid = video_get_option_int(options, "edid", 1);
- video_get_option_string(options, "monitor", monitor, sizeof(monitor),
- "dvi");
+ sunxi_display.monitor = sunxi_monitor_dvi;
+ video_get_option_string(options, "monitor", mon, sizeof(mon),
+ sunxi_get_mon_desc(sunxi_display.monitor));
+ for (i = 0; i <= SUNXI_MONITOR_LAST; i++) {
+ if (strcmp(mon, sunxi_get_mon_desc(i)) == 0) {
+ sunxi_display.monitor = i;
+ break;
+ }
+ }
+ if (i > SUNXI_MONITOR_LAST)
+ printf("Unknown monitor: '%s', falling back to '%s'\n",
+ mon, sunxi_get_mon_desc(sunxi_display.monitor));
/* Always call hdp_detect, as it also enables various clocks, etc. */
ret = sunxi_hdmi_hpd_detect();
@@ -607,7 +638,7 @@ void *video_hw_init(void)
/* Check edid if requested and we've a cable plugged in */
if (edid && ret) {
- if (sunxi_hdmi_edid_get_mode(&edid_mode, monitor) == 0)
+ if (sunxi_hdmi_edid_get_mode(&edid_mode) == 0)
mode = &edid_mode;
}
@@ -615,13 +646,13 @@ void *video_hw_init(void)
printf("Only non-interlaced modes supported, falling back to 1024x768\n");
mode = &res_mode_init[RES_MODE_1024x768];
} else {
- printf("Setting up a %dx%d %s console\n",
- mode->xres, mode->yres, monitor);
+ printf("Setting up a %dx%d %s console\n", mode->xres,
+ mode->yres, sunxi_get_mon_desc(sunxi_display.monitor));
}
sunxi_display.enabled = true;
sunxi_engines_init();
- sunxi_mode_set(mode, monitor, gd->fb_base - CONFIG_SYS_SDRAM_BASE);
+ sunxi_mode_set(mode, gd->fb_base - CONFIG_SYS_SDRAM_BASE);
/*
* These are the only members of this structure that are used. All the
--
2.1.0
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