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sunxi: video: Improve monitor video-mode option handling 

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@redhat.com>
Acked-by: Ian Campbell <ijc@hellion.org.uk>
This commit is contained in:
Hans de Goede 2014-12-21 14:37:45 +01:00
parent 6c727e09a0
commit 1c092205a2
1 changed files with 47 additions and 16 deletions
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63
drivers/video/sunxi_display.c
View File

@ -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