Lines Matching +full:ast2500 +full:- +full:scu
1 // SPDX-License-Identifier: GPL-2.0+
5 #include <linux/dma-mapping.h>
38 * The AST2500 supports a total of 3 output paths:
57 * The driver was written with the 'AST2500 Software Programming Guide' v17,
62 u32 dac_reg; /* DAC register in SCU */
63 u32 vga_scratch_reg; /* VGA scratch register in SCU */
83 { .compatible = "aspeed,ast2400-gfx", .data = &ast2400_config },
84 { .compatible = "aspeed,ast2500-gfx", .data = &ast2500_config },
103 drm->mode_config.min_width = 0; in aspeed_gfx_setup_mode_config()
104 drm->mode_config.min_height = 0; in aspeed_gfx_setup_mode_config()
105 drm->mode_config.max_width = 800; in aspeed_gfx_setup_mode_config()
106 drm->mode_config.max_height = 600; in aspeed_gfx_setup_mode_config()
107 drm->mode_config.funcs = &aspeed_gfx_mode_config_funcs; in aspeed_gfx_setup_mode_config()
118 reg = readl(priv->base + CRT_CTRL1); in aspeed_gfx_irq_handler()
121 drm_crtc_handle_vblank(&priv->pipe.crtc); in aspeed_gfx_irq_handler()
122 writel(reg, priv->base + CRT_CTRL1); in aspeed_gfx_irq_handler()
131 struct platform_device *pdev = to_platform_device(drm->dev); in aspeed_gfx_load()
133 struct device_node *np = pdev->dev.of_node; in aspeed_gfx_load()
140 priv->base = devm_ioremap_resource(drm->dev, res); in aspeed_gfx_load()
141 if (IS_ERR(priv->base)) in aspeed_gfx_load()
142 return PTR_ERR(priv->base); in aspeed_gfx_load()
144 match = of_match_device(aspeed_gfx_match, &pdev->dev); in aspeed_gfx_load()
146 return -EINVAL; in aspeed_gfx_load()
147 config = match->data; in aspeed_gfx_load()
149 priv->dac_reg = config->dac_reg; in aspeed_gfx_load()
150 priv->vga_scratch_reg = config->vga_scratch_reg; in aspeed_gfx_load()
151 priv->throd_val = config->throd_val; in aspeed_gfx_load()
152 priv->scan_line_max = config->scan_line_max; in aspeed_gfx_load()
154 priv->scu = syscon_regmap_lookup_by_phandle(np, "syscon"); in aspeed_gfx_load()
155 if (IS_ERR(priv->scu)) { in aspeed_gfx_load()
156 priv->scu = syscon_regmap_lookup_by_compatible("aspeed,ast2500-scu"); in aspeed_gfx_load()
157 if (IS_ERR(priv->scu)) { in aspeed_gfx_load()
158 dev_err(&pdev->dev, "failed to find SCU regmap\n"); in aspeed_gfx_load()
159 return PTR_ERR(priv->scu); in aspeed_gfx_load()
163 ret = of_reserved_mem_device_init(drm->dev); in aspeed_gfx_load()
165 dev_err(&pdev->dev, in aspeed_gfx_load()
170 ret = dma_set_mask_and_coherent(drm->dev, DMA_BIT_MASK(32)); in aspeed_gfx_load()
172 dev_err(&pdev->dev, "failed to set DMA mask: %d\n", ret); in aspeed_gfx_load()
176 priv->rst = devm_reset_control_get_exclusive(&pdev->dev, NULL); in aspeed_gfx_load()
177 if (IS_ERR(priv->rst)) { in aspeed_gfx_load()
178 dev_err(&pdev->dev, in aspeed_gfx_load()
180 return PTR_ERR(priv->rst); in aspeed_gfx_load()
182 reset_control_deassert(priv->rst); in aspeed_gfx_load()
184 priv->clk = devm_clk_get(drm->dev, NULL); in aspeed_gfx_load()
185 if (IS_ERR(priv->clk)) { in aspeed_gfx_load()
186 dev_err(&pdev->dev, in aspeed_gfx_load()
188 return PTR_ERR(priv->clk); in aspeed_gfx_load()
190 clk_prepare_enable(priv->clk); in aspeed_gfx_load()
193 writel(0, priv->base + CRT_CTRL1); in aspeed_gfx_load()
194 writel(0, priv->base + CRT_CTRL2); in aspeed_gfx_load()
202 dev_err(drm->dev, "Failed to initialise vblank\n"); in aspeed_gfx_load()
208 dev_err(drm->dev, "Failed to create outputs\n"); in aspeed_gfx_load()
214 dev_err(drm->dev, "Cannot setup simple display pipe\n"); in aspeed_gfx_load()
218 ret = devm_request_irq(drm->dev, platform_get_irq(pdev, 0), in aspeed_gfx_load()
221 dev_err(drm->dev, "Failed to install IRQ handler\n"); in aspeed_gfx_load()
241 .name = "aspeed-gfx-drm",
260 return -EINVAL; in dac_mux_store()
262 rc = regmap_update_bits(priv->scu, priv->dac_reg, 0x30000, val << 16); in dac_mux_store()
275 rc = regmap_read(priv->scu, priv->dac_reg, ®); in dac_mux_show()
290 rc = regmap_read(priv->scu, priv->vga_scratch_reg, ®); in vga_pw_show()
313 priv = devm_drm_dev_alloc(&pdev->dev, &aspeed_gfx_driver, in aspeed_gfx_probe()
318 ret = aspeed_gfx_load(&priv->drm); in aspeed_gfx_probe()
324 ret = sysfs_create_group(&pdev->dev.kobj, &aspeed_sysfs_attr_group); in aspeed_gfx_probe()
328 ret = drm_dev_register(&priv->drm, 0); in aspeed_gfx_probe()
332 drm_fbdev_generic_setup(&priv->drm, 32); in aspeed_gfx_probe()
336 sysfs_remove_group(&pdev->dev.kobj, &aspeed_sysfs_attr_group); in aspeed_gfx_probe()
337 aspeed_gfx_unload(&priv->drm); in aspeed_gfx_probe()
346 sysfs_remove_group(&pdev->dev.kobj, &aspeed_sysfs_attr_group); in aspeed_gfx_remove()