diff options
Diffstat (limited to 'drivers/gpu/drm/aspeed')
| -rw-r--r-- | drivers/gpu/drm/aspeed/aspeed_gfx.h | 8 | ||||
| -rw-r--r-- | drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c | 11 | ||||
| -rw-r--r-- | drivers/gpu/drm/aspeed/aspeed_gfx_drv.c | 57 |
3 files changed, 55 insertions, 21 deletions
diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx.h b/drivers/gpu/drm/aspeed/aspeed_gfx.h index f1e7e56abc02..96501152bafa 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx.h +++ b/drivers/gpu/drm/aspeed/aspeed_gfx.h @@ -11,6 +11,11 @@ struct aspeed_gfx { struct reset_control *rst; struct regmap *scu; + u32 dac_reg; + u32 vga_scratch_reg; + u32 throd_val; + u32 scan_line_max; + struct drm_simple_display_pipe pipe; struct drm_connector connector; }; @@ -100,6 +105,3 @@ int aspeed_gfx_create_output(struct drm_device *drm); /* CRT_THROD */ #define CRT_THROD_LOW(x) (x) #define CRT_THROD_HIGH(x) ((x) << 8) - -/* Default Threshold Seting */ -#define G5_CRT_THROD_VAL (CRT_THROD_LOW(0x24) | CRT_THROD_HIGH(0x3C)) diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c b/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c index e54686c31a90..20c2197b270f 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c +++ b/drivers/gpu/drm/aspeed/aspeed_gfx_crtc.c @@ -59,8 +59,8 @@ static void aspeed_gfx_enable_controller(struct aspeed_gfx *priv) u32 ctrl1 = readl(priv->base + CRT_CTRL1); u32 ctrl2 = readl(priv->base + CRT_CTRL2); - /* SCU2C: set DAC source for display output to Graphics CRT (GFX) */ - regmap_update_bits(priv->scu, 0x2c, BIT(16), BIT(16)); + /* Set DAC source for display output to Graphics CRT (GFX) */ + regmap_update_bits(priv->scu, priv->dac_reg, BIT(16), BIT(16)); writel(ctrl1 | CRT_CTRL_EN, priv->base + CRT_CTRL1); writel(ctrl2 | CRT_CTRL_DAC_EN, priv->base + CRT_CTRL2); @@ -74,7 +74,7 @@ static void aspeed_gfx_disable_controller(struct aspeed_gfx *priv) writel(ctrl1 & ~CRT_CTRL_EN, priv->base + CRT_CTRL1); writel(ctrl2 & ~CRT_CTRL_DAC_EN, priv->base + CRT_CTRL2); - regmap_update_bits(priv->scu, 0x2c, BIT(16), 0); + regmap_update_bits(priv->scu, priv->dac_reg, BIT(16), 0); } static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) @@ -127,7 +127,8 @@ static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) * Terminal Count: memory size of one scan line */ d_offset = m->hdisplay * bpp / 8; - t_count = (m->hdisplay * bpp + 127) / 128; + t_count = DIV_ROUND_UP(m->hdisplay * bpp, priv->scan_line_max); + writel(CRT_DISP_OFFSET(d_offset) | CRT_TERM_COUNT(t_count), priv->base + CRT_OFFSET); @@ -135,7 +136,7 @@ static void aspeed_gfx_crtc_mode_set_nofb(struct aspeed_gfx *priv) * Threshold: FIFO thresholds of refill and stop (16 byte chunks * per line, rounded up) */ - writel(G5_CRT_THROD_VAL, priv->base + CRT_THROD); + writel(priv->throd_val, priv->base + CRT_THROD); } static void aspeed_gfx_pipe_enable(struct drm_simple_display_pipe *pipe, diff --git a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c index 54a6bda03c0e..6b3a01ba3e0d 100644 --- a/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c +++ b/drivers/gpu/drm/aspeed/aspeed_gfx_drv.c @@ -7,6 +7,7 @@ #include <linux/mfd/syscon.h> #include <linux/module.h> #include <linux/of.h> +#include <linux/of_device.h> #include <linux/of_reserved_mem.h> #include <linux/platform_device.h> #include <linux/regmap.h> @@ -57,6 +58,34 @@ * which is available under NDA from ASPEED. */ +struct aspeed_gfx_config { + u32 dac_reg; /* DAC register in SCU */ + u32 vga_scratch_reg; /* VGA scratch register in SCU */ + u32 throd_val; /* Default Threshold Seting */ + u32 scan_line_max; /* Max memory size of one scan line */ +}; + +static const struct aspeed_gfx_config ast2400_config = { + .dac_reg = 0x2c, + .vga_scratch_reg = 0x50, + .throd_val = CRT_THROD_LOW(0x1e) | CRT_THROD_HIGH(0x12), + .scan_line_max = 64, +}; + +static const struct aspeed_gfx_config ast2500_config = { + .dac_reg = 0x2c, + .vga_scratch_reg = 0x50, + .throd_val = CRT_THROD_LOW(0x24) | CRT_THROD_HIGH(0x3c), + .scan_line_max = 128, +}; + +static const struct of_device_id aspeed_gfx_match[] = { + { .compatible = "aspeed,ast2400-gfx", .data = &ast2400_config }, + { .compatible = "aspeed,ast2500-gfx", .data = &ast2500_config }, + { }, +}; +MODULE_DEVICE_TABLE(of, aspeed_gfx_match); + static const struct drm_mode_config_funcs aspeed_gfx_mode_config_funcs = { .fb_create = drm_gem_fb_create, .atomic_check = drm_atomic_helper_check, @@ -97,13 +126,13 @@ static irqreturn_t aspeed_gfx_irq_handler(int irq, void *data) return IRQ_NONE; } - - static int aspeed_gfx_load(struct drm_device *drm) { struct platform_device *pdev = to_platform_device(drm->dev); struct aspeed_gfx *priv = to_aspeed_gfx(drm); struct device_node *np = pdev->dev.of_node; + const struct aspeed_gfx_config *config; + const struct of_device_id *match; struct resource *res; int ret; @@ -112,6 +141,16 @@ static int aspeed_gfx_load(struct drm_device *drm) if (IS_ERR(priv->base)) return PTR_ERR(priv->base); + match = of_match_device(aspeed_gfx_match, &pdev->dev); + if (!match) + return -EINVAL; + config = match->data; + + priv->dac_reg = config->dac_reg; + priv->vga_scratch_reg = config->vga_scratch_reg; + priv->throd_val = config->throd_val; + priv->scan_line_max = config->scan_line_max; + priv->scu = syscon_regmap_lookup_by_phandle(np, "syscon"); if (IS_ERR(priv->scu)) { priv->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2500-scu"); @@ -206,14 +245,6 @@ static const struct drm_driver aspeed_gfx_driver = { .minor = 0, }; -static const struct of_device_id aspeed_gfx_match[] = { - { .compatible = "aspeed,ast2500-gfx" }, - { } -}; - -#define ASPEED_SCU_VGA0 0x50 -#define ASPEED_SCU_MISC_CTRL 0x2c - static ssize_t dac_mux_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { @@ -228,7 +259,7 @@ static ssize_t dac_mux_store(struct device *dev, struct device_attribute *attr, if (val > 3) return -EINVAL; - rc = regmap_update_bits(priv->scu, ASPEED_SCU_MISC_CTRL, 0x30000, val << 16); + rc = regmap_update_bits(priv->scu, priv->dac_reg, 0x30000, val << 16); if (rc < 0) return 0; @@ -241,7 +272,7 @@ static ssize_t dac_mux_show(struct device *dev, struct device_attribute *attr, c u32 reg; int rc; - rc = regmap_read(priv->scu, ASPEED_SCU_MISC_CTRL, ®); + rc = regmap_read(priv->scu, priv->dac_reg, ®); if (rc) return rc; @@ -256,7 +287,7 @@ vga_pw_show(struct device *dev, struct device_attribute *attr, char *buf) u32 reg; int rc; - rc = regmap_read(priv->scu, ASPEED_SCU_VGA0, ®); + rc = regmap_read(priv->scu, priv->vga_scratch_reg, ®); if (rc) return rc; |