14  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
70 	struct device_node *np = dev->pdev->dev.of_node;  in ast_detect_config_mode()
75 	ast->config_mode = ast_use_defaults;  in ast_detect_config_mode()
78 	/* Check if we have device-tree properties */  in ast_detect_config_mode()
79 	if (np && !of_property_read_u32(np, "aspeed,scu-revision-id",  in ast_detect_config_mode()
82 		ast->config_mode = ast_use_dt;  in ast_detect_config_mode()
83 		drm_info(dev, "Using device-tree for configuration\n");  in ast_detect_config_mode()
88 	if (dev->pdev->device != PCI_CHIP_AST2000)  in ast_detect_config_mode()
92 	 * The BMC will set SCU 0x40 D[12] to 1 if the P2 bridge  in ast_detect_config_mode()
103 			ast->config_mode = ast_use_p2a;  in ast_detect_config_mode()
128 	 * (Assumption: VGA not enabled -> need to POST)  in ast_detect_chip()
142 	/* Find out whether P2A works or whether to use device-tree */  in ast_detect_chip()
146 	if (dev->pdev->revision >= 0x40) {  in ast_detect_chip()
147 		ast->chip = AST2500;  in ast_detect_chip()
149 	} else if (dev->pdev->revision >= 0x30) {  in ast_detect_chip()
150 		ast->chip = AST2400;  in ast_detect_chip()
152 	} else if (dev->pdev->revision >= 0x20) {  in ast_detect_chip()
153 		ast->chip = AST2300;  in ast_detect_chip()
155 	} else if (dev->pdev->revision >= 0x10) {  in ast_detect_chip()
158 			ast->chip = AST1100;  in ast_detect_chip()
162 			ast->chip = AST2200;  in ast_detect_chip()
166 			ast->chip = AST2150;  in ast_detect_chip()
170 			ast->chip = AST2100;  in ast_detect_chip()
174 		ast->vga2_clone = false;  in ast_detect_chip()
176 		ast->chip = AST2000;  in ast_detect_chip()
181 	switch (ast->chip) {  in ast_detect_chip()
183 		ast->support_wide_screen = false;  in ast_detect_chip()
188 			ast->support_wide_screen = true;  in ast_detect_chip()
190 			ast->support_wide_screen = true;  in ast_detect_chip()
192 			ast->support_wide_screen = false;  in ast_detect_chip()
193 			if (ast->chip == AST2300 &&  in ast_detect_chip()
195 				ast->support_wide_screen = true;  in ast_detect_chip()
196 			if (ast->chip == AST2400 &&  in ast_detect_chip()
198 				ast->support_wide_screen = true;  in ast_detect_chip()
199 			if (ast->chip == AST2500 &&  in ast_detect_chip()
201 				ast->support_wide_screen = true;  in ast_detect_chip()
207 	ast->tx_chip_type = AST_TX_NONE;  in ast_detect_chip()
214 	 * is at power-on reset, otherwise we'll incorrectly "detect" a  in ast_detect_chip()
220 			ast->tx_chip_type = AST_TX_SIL164;  in ast_detect_chip()
223 	if ((ast->chip == AST2300) || (ast->chip == AST2400)) {  in ast_detect_chip()
232 			ast->tx_chip_type = AST_TX_SIL164;  in ast_detect_chip()
235 			ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL);  in ast_detect_chip()
236 			if (ast->dp501_fw_addr) {  in ast_detect_chip()
238 				if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) {  in ast_detect_chip()
239 					drmm_kfree(dev, ast->dp501_fw_addr);  in ast_detect_chip()
240 					ast->dp501_fw_addr = NULL;  in ast_detect_chip()
245 			ast->tx_chip_type = AST_TX_DP501;  in ast_detect_chip()
250 	switch(ast->tx_chip_type) {  in ast_detect_chip()
265 	struct device_node *np = dev->pdev->dev.of_node;  in ast_get_dram_info()
270 	switch (ast->config_mode) {  in ast_get_dram_info()
276 		if (of_property_read_u32(np, "aspeed,mcr-configuration",  in ast_get_dram_info()
279 		if (of_property_read_u32(np, "aspeed,mcr-scu-mpll",  in ast_get_dram_info()
282 		if (of_property_read_u32(np, "aspeed,mcr-scu-strap",  in ast_get_dram_info()
295 		ast->dram_bus_width = 16;  in ast_get_dram_info()
296 		ast->dram_type = AST_DRAM_1Gx16;  in ast_get_dram_info()
297 		if (ast->chip == AST2500)  in ast_get_dram_info()
298 			ast->mclk = 800;  in ast_get_dram_info()
300 			ast->mclk = 396;  in ast_get_dram_info()
305 		ast->dram_bus_width = 16;  in ast_get_dram_info()
307 		ast->dram_bus_width = 32;  in ast_get_dram_info()
309 	if (ast->chip == AST2500) {  in ast_get_dram_info()
312 			ast->dram_type = AST_DRAM_1Gx16;  in ast_get_dram_info()
316 			ast->dram_type = AST_DRAM_2Gx16;  in ast_get_dram_info()
319 			ast->dram_type = AST_DRAM_4Gx16;  in ast_get_dram_info()
322 			ast->dram_type = AST_DRAM_8Gx16;  in ast_get_dram_info()
325 	} else if (ast->chip == AST2300 || ast->chip == AST2400) {  in ast_get_dram_info()
328 			ast->dram_type = AST_DRAM_512Mx16;  in ast_get_dram_info()
332 			ast->dram_type = AST_DRAM_1Gx16;  in ast_get_dram_info()
335 			ast->dram_type = AST_DRAM_2Gx16;  in ast_get_dram_info()
338 			ast->dram_type = AST_DRAM_4Gx16;  in ast_get_dram_info()
345 			ast->dram_type = AST_DRAM_512Mx16;  in ast_get_dram_info()
349 				ast->dram_type = AST_DRAM_1Gx16;  in ast_get_dram_info()
351 				ast->dram_type = AST_DRAM_512Mx32;  in ast_get_dram_info()
354 			ast->dram_type = AST_DRAM_1Gx32;  in ast_get_dram_info()
379 	ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000));  in ast_get_dram_info()
404 	ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_private, base);  in ast_device_create()
407 	dev = &ast->base;  in ast_device_create()
409 	dev->pdev = pdev;  in ast_device_create()
412 	ast->regs = pci_iomap(dev->pdev, 1, 0);  in ast_device_create()
413 	if (!ast->regs)  in ast_device_create()
414 		return ERR_PTR(-EIO);  in ast_device_create()
421 	if (!(pci_resource_flags(dev->pdev, 2) & IORESOURCE_IO)) {  in ast_device_create()
423 		ast->ioregs = ast->regs + AST_IO_MM_OFFSET;  in ast_device_create()
427 	if (!ast->ioregs) {  in ast_device_create()
428 		ast->ioregs = pci_iomap(dev->pdev, 2, 0);  in ast_device_create()
429 		if (!ast->ioregs)  in ast_device_create()
430 			return ERR_PTR(-EIO);  in ast_device_create()
440 		 ast->mclk, ast->dram_type, ast->dram_bus_width);  in ast_device_create()
453 	ret = devm_add_action_or_reset(dev->dev, ast_device_release, ast);  in ast_device_create()