1312fec14SDave Airlie /* 2312fec14SDave Airlie * Copyright 2012 Red Hat Inc. 3312fec14SDave Airlie * 4312fec14SDave Airlie * Permission is hereby granted, free of charge, to any person obtaining a 5312fec14SDave Airlie * copy of this software and associated documentation files (the 6312fec14SDave Airlie * "Software"), to deal in the Software without restriction, including 7312fec14SDave Airlie * without limitation the rights to use, copy, modify, merge, publish, 8312fec14SDave Airlie * distribute, sub license, and/or sell copies of the Software, and to 9312fec14SDave Airlie * permit persons to whom the Software is furnished to do so, subject to 10312fec14SDave Airlie * the following conditions: 11312fec14SDave Airlie * 12312fec14SDave Airlie * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 13312fec14SDave Airlie * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 14312fec14SDave Airlie * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL 15312fec14SDave Airlie * THE COPYRIGHT HOLDERS, AUTHORS AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, 16312fec14SDave Airlie * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR 17312fec14SDave Airlie * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE 18312fec14SDave Airlie * USE OR OTHER DEALINGS IN THE SOFTWARE. 19312fec14SDave Airlie * 20312fec14SDave Airlie * The above copyright notice and this permission notice (including the 21312fec14SDave Airlie * next paragraph) shall be included in all copies or substantial portions 22312fec14SDave Airlie * of the Software. 23312fec14SDave Airlie * 24312fec14SDave Airlie */ 25312fec14SDave Airlie /* 26312fec14SDave Airlie * Authors: Dave Airlie <airlied@redhat.com> 27312fec14SDave Airlie */ 28fbbbd160SSam Ravnborg 29fbbbd160SSam Ravnborg #include <linux/pci.h> 30312fec14SDave Airlie 314961eb60SThomas Zimmermann #include <drm/drm_atomic_helper.h> 32fbe01716SThomas Zimmermann #include <drm/drm_drv.h> 33fbbbd160SSam Ravnborg #include <drm/drm_gem.h> 344bc85b82SThomas Zimmermann #include <drm/drm_managed.h> 35fbbbd160SSam Ravnborg 36fbbbd160SSam Ravnborg #include "ast_drv.h" 37312fec14SDave Airlie 3848b6701eSThomas Zimmermann static int ast_init_pci_config(struct pci_dev *pdev) 3948b6701eSThomas Zimmermann { 4048b6701eSThomas Zimmermann int err; 4148b6701eSThomas Zimmermann u16 pcis04; 4248b6701eSThomas Zimmermann 4348b6701eSThomas Zimmermann err = pci_read_config_word(pdev, PCI_COMMAND, &pcis04); 4448b6701eSThomas Zimmermann if (err) 4548b6701eSThomas Zimmermann goto out; 4648b6701eSThomas Zimmermann 4748b6701eSThomas Zimmermann pcis04 |= PCI_COMMAND_MEMORY | PCI_COMMAND_IO; 4848b6701eSThomas Zimmermann 4948b6701eSThomas Zimmermann err = pci_write_config_word(pdev, PCI_COMMAND, pcis04); 5048b6701eSThomas Zimmermann 5148b6701eSThomas Zimmermann out: 5248b6701eSThomas Zimmermann return pcibios_err_to_errno(err); 5348b6701eSThomas Zimmermann } 5448b6701eSThomas Zimmermann 555b71707dSThomas Zimmermann static bool ast_is_vga_enabled(struct drm_device *dev) 565b71707dSThomas Zimmermann { 575b71707dSThomas Zimmermann struct ast_device *ast = to_ast_device(dev); 585b71707dSThomas Zimmermann u8 ch; 595b71707dSThomas Zimmermann 605b71707dSThomas Zimmermann ch = ast_io_read8(ast, AST_IO_VGA_ENABLE_PORT); 615b71707dSThomas Zimmermann 625b71707dSThomas Zimmermann return !!(ch & 0x01); 635b71707dSThomas Zimmermann } 645b71707dSThomas Zimmermann 655b71707dSThomas Zimmermann static void ast_enable_vga(struct drm_device *dev) 665b71707dSThomas Zimmermann { 675b71707dSThomas Zimmermann struct ast_device *ast = to_ast_device(dev); 685b71707dSThomas Zimmermann 695b71707dSThomas Zimmermann ast_io_write8(ast, AST_IO_VGA_ENABLE_PORT, 0x01); 705b71707dSThomas Zimmermann ast_io_write8(ast, AST_IO_MISC_PORT_WRITE, 0x01); 715b71707dSThomas Zimmermann } 725b71707dSThomas Zimmermann 73a74ec2bcSThomas Zimmermann /* 74a74ec2bcSThomas Zimmermann * Run this function as part of the HW device cleanup; not 75a74ec2bcSThomas Zimmermann * when the DRM device gets released. 76a74ec2bcSThomas Zimmermann */ 77a74ec2bcSThomas Zimmermann static void ast_enable_mmio_release(void *data) 785b71707dSThomas Zimmermann { 79a74ec2bcSThomas Zimmermann struct ast_device *ast = data; 80a74ec2bcSThomas Zimmermann 81a74ec2bcSThomas Zimmermann /* enable standard VGA decode */ 82a74ec2bcSThomas Zimmermann ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x04); 83a74ec2bcSThomas Zimmermann } 84a74ec2bcSThomas Zimmermann 85a74ec2bcSThomas Zimmermann static int ast_enable_mmio(struct ast_device *ast) 86a74ec2bcSThomas Zimmermann { 87a74ec2bcSThomas Zimmermann struct drm_device *dev = &ast->base; 885b71707dSThomas Zimmermann 895b71707dSThomas Zimmermann ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0xa1, 0x06); 90a74ec2bcSThomas Zimmermann 91a74ec2bcSThomas Zimmermann return devm_add_action_or_reset(dev->dev, ast_enable_mmio_release, ast); 925b71707dSThomas Zimmermann } 935b71707dSThomas Zimmermann 945b71707dSThomas Zimmermann static void ast_open_key(struct ast_device *ast) 955b71707dSThomas Zimmermann { 965b71707dSThomas Zimmermann ast_set_index_reg(ast, AST_IO_CRTC_PORT, 0x80, 0xA8); 975b71707dSThomas Zimmermann } 985b71707dSThomas Zimmermann 99*95badecbSThomas Zimmermann static int ast_device_config_init(struct ast_device *ast) 10071f677a9SRussell Currey { 101*95badecbSThomas Zimmermann struct drm_device *dev = &ast->base; 10246fb883cSThomas Zimmermann struct pci_dev *pdev = to_pci_dev(dev->dev); 103*95badecbSThomas Zimmermann struct device_node *np = dev->dev->of_node; 104*95badecbSThomas Zimmermann uint32_t scu_rev = 0xffffffff; 105*95badecbSThomas Zimmermann u32 data; 106*95badecbSThomas Zimmermann u8 jregd0, jregd1; 10771f677a9SRussell Currey 108*95badecbSThomas Zimmermann /* 109*95badecbSThomas Zimmermann * Find configuration mode and read SCU revision 110*95badecbSThomas Zimmermann */ 111*95badecbSThomas Zimmermann 11271f677a9SRussell Currey ast->config_mode = ast_use_defaults; 11371f677a9SRussell Currey 11471f677a9SRussell Currey /* Check if we have device-tree properties */ 115*95badecbSThomas Zimmermann if (np && !of_property_read_u32(np, "aspeed,scu-revision-id", &data)) { 11671f677a9SRussell Currey /* We do, disable P2A access */ 11771f677a9SRussell Currey ast->config_mode = ast_use_dt; 118*95badecbSThomas Zimmermann scu_rev = data; 119*95badecbSThomas Zimmermann } else if (pdev->device == PCI_CHIP_AST2000) { // Not all families have a P2A bridge 12071f677a9SRussell Currey /* 12171f677a9SRussell Currey * The BMC will set SCU 0x40 D[12] to 1 if the P2 bridge 12271f677a9SRussell Currey * is disabled. We force using P2A if VGA only mode bit 12371f677a9SRussell Currey * is set D[7] 12471f677a9SRussell Currey */ 12571f677a9SRussell Currey jregd0 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); 12671f677a9SRussell Currey jregd1 = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); 12771f677a9SRussell Currey if (!(jregd0 & 0x80) || !(jregd1 & 0x10)) { 128*95badecbSThomas Zimmermann 129*95badecbSThomas Zimmermann /* 130*95badecbSThomas Zimmermann * We have a P2A bridge and it is enabled. 131*95badecbSThomas Zimmermann */ 132*95badecbSThomas Zimmermann 133*95badecbSThomas Zimmermann /* Patch AST2500/AST2510 */ 134*95badecbSThomas Zimmermann if ((pdev->revision & 0xf0) == 0x40) { 135*95badecbSThomas Zimmermann if (!(jregd0 & AST_VRAM_INIT_STATUS_MASK)) 136f34bf652SKuoHsiang Chou ast_patch_ahb_2500(ast); 137*95badecbSThomas Zimmermann } 138f34bf652SKuoHsiang Chou 139*95badecbSThomas Zimmermann /* Double check that it's actually working */ 14071f677a9SRussell Currey data = ast_read32(ast, 0xf004); 141*95badecbSThomas Zimmermann if ((data != 0xffffffff) && (data != 0x00)) { 14271f677a9SRussell Currey ast->config_mode = ast_use_p2a; 14371f677a9SRussell Currey 14471f677a9SRussell Currey /* Read SCU7c (silicon revision register) */ 14571f677a9SRussell Currey ast_write32(ast, 0xf004, 0x1e6e0000); 14671f677a9SRussell Currey ast_write32(ast, 0xf000, 0x1); 147*95badecbSThomas Zimmermann scu_rev = ast_read32(ast, 0x1207c); 148*95badecbSThomas Zimmermann } 14971f677a9SRussell Currey } 15071f677a9SRussell Currey } 15171f677a9SRussell Currey 152*95badecbSThomas Zimmermann switch (ast->config_mode) { 153*95badecbSThomas Zimmermann case ast_use_defaults: 154*95badecbSThomas Zimmermann drm_info(dev, "Using default configuration\n"); 155*95badecbSThomas Zimmermann break; 156*95badecbSThomas Zimmermann case ast_use_dt: 157*95badecbSThomas Zimmermann drm_info(dev, "Using device-tree for configuration\n"); 158*95badecbSThomas Zimmermann break; 159*95badecbSThomas Zimmermann case ast_use_p2a: 160*95badecbSThomas Zimmermann drm_info(dev, "Using P2A bridge for configuration\n"); 161*95badecbSThomas Zimmermann break; 16271f677a9SRussell Currey } 163312fec14SDave Airlie 164*95badecbSThomas Zimmermann /* 165*95badecbSThomas Zimmermann * Identify chipset 166*95badecbSThomas Zimmermann */ 16771f677a9SRussell Currey 16846fb883cSThomas Zimmermann if (pdev->revision >= 0x50) { 169f9bd00e0SKuoHsiang Chou ast->chip = AST2600; 170f9bd00e0SKuoHsiang Chou drm_info(dev, "AST 2600 detected\n"); 17146fb883cSThomas Zimmermann } else if (pdev->revision >= 0x40) { 17252c29330SThomas Zimmermann switch (scu_rev & 0x300) { 17352c29330SThomas Zimmermann case 0x0100: 17452c29330SThomas Zimmermann ast->chip = AST2510; 17552c29330SThomas Zimmermann drm_info(dev, "AST 2510 detected\n"); 17652c29330SThomas Zimmermann break; 17752c29330SThomas Zimmermann default: 1789f93c8b3SY.C. Chen ast->chip = AST2500; 1791a19b4cbSThomas Zimmermann drm_info(dev, "AST 2500 detected\n"); 18052c29330SThomas Zimmermann } 18146fb883cSThomas Zimmermann } else if (pdev->revision >= 0x30) { 18286d86d1bSThomas Zimmermann switch (scu_rev & 0x300) { 18386d86d1bSThomas Zimmermann case 0x0100: 18486d86d1bSThomas Zimmermann ast->chip = AST1400; 18586d86d1bSThomas Zimmermann drm_info(dev, "AST 1400 detected\n"); 18686d86d1bSThomas Zimmermann break; 18786d86d1bSThomas Zimmermann default: 1881453bf4cSDave Airlie ast->chip = AST2400; 1891a19b4cbSThomas Zimmermann drm_info(dev, "AST 2400 detected\n"); 19086d86d1bSThomas Zimmermann } 19146fb883cSThomas Zimmermann } else if (pdev->revision >= 0x20) { 1926bd576daSThomas Zimmermann switch (scu_rev & 0x300) { 1936bd576daSThomas Zimmermann case 0x0000: 1946bd576daSThomas Zimmermann ast->chip = AST1300; 1956bd576daSThomas Zimmermann drm_info(dev, "AST 1300 detected\n"); 1966bd576daSThomas Zimmermann break; 1976bd576daSThomas Zimmermann default: 198312fec14SDave Airlie ast->chip = AST2300; 1991a19b4cbSThomas Zimmermann drm_info(dev, "AST 2300 detected\n"); 2006bd576daSThomas Zimmermann break; 2016bd576daSThomas Zimmermann } 20246fb883cSThomas Zimmermann } else if (pdev->revision >= 0x10) { 20371f677a9SRussell Currey switch (scu_rev & 0x0300) { 204312fec14SDave Airlie case 0x0200: 205312fec14SDave Airlie ast->chip = AST1100; 2061a19b4cbSThomas Zimmermann drm_info(dev, "AST 1100 detected\n"); 207312fec14SDave Airlie break; 208312fec14SDave Airlie case 0x0100: 209312fec14SDave Airlie ast->chip = AST2200; 2101a19b4cbSThomas Zimmermann drm_info(dev, "AST 2200 detected\n"); 211312fec14SDave Airlie break; 212312fec14SDave Airlie case 0x0000: 213312fec14SDave Airlie ast->chip = AST2150; 2141a19b4cbSThomas Zimmermann drm_info(dev, "AST 2150 detected\n"); 215312fec14SDave Airlie break; 216312fec14SDave Airlie default: 217312fec14SDave Airlie ast->chip = AST2100; 2181a19b4cbSThomas Zimmermann drm_info(dev, "AST 2100 detected\n"); 219312fec14SDave Airlie break; 220312fec14SDave Airlie } 221312fec14SDave Airlie } else { 22283502a5dSY.C. Chen ast->chip = AST2000; 2231a19b4cbSThomas Zimmermann drm_info(dev, "AST 2000 detected\n"); 224312fec14SDave Airlie } 225f1f62f2cSDave Airlie 226546b959eSThomas Zimmermann return 0; 227546b959eSThomas Zimmermann } 228546b959eSThomas Zimmermann 229546b959eSThomas Zimmermann static void ast_detect_widescreen(struct ast_device *ast) 230546b959eSThomas Zimmermann { 231546b959eSThomas Zimmermann u8 jreg; 232546b959eSThomas Zimmermann 233d1b98557SBenjamin Herrenschmidt /* Check if we support wide screen */ 234ecf64579SThomas Zimmermann switch (AST_GEN(ast)) { 235ecf64579SThomas Zimmermann case 1: 236f1f62f2cSDave Airlie ast->support_wide_screen = false; 237f1f62f2cSDave Airlie break; 238f1f62f2cSDave Airlie default: 239f1f62f2cSDave Airlie jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd0, 0xff); 240f1f62f2cSDave Airlie if (!(jreg & 0x80)) 241f1f62f2cSDave Airlie ast->support_wide_screen = true; 242f1f62f2cSDave Airlie else if (jreg & 0x01) 243f1f62f2cSDave Airlie ast->support_wide_screen = true; 244f1f62f2cSDave Airlie else { 245f1f62f2cSDave Airlie ast->support_wide_screen = false; 2466bd576daSThomas Zimmermann if (ast->chip == AST1300) 247f1f62f2cSDave Airlie ast->support_wide_screen = true; 24886d86d1bSThomas Zimmermann if (ast->chip == AST1400) 2491453bf4cSDave Airlie ast->support_wide_screen = true; 25052c29330SThomas Zimmermann if (ast->chip == AST2510) 2519f93c8b3SY.C. Chen ast->support_wide_screen = true; 252ecf64579SThomas Zimmermann if (IS_AST_GEN7(ast)) 25359a39fccSKuoHsiang Chou ast->support_wide_screen = true; 254f1f62f2cSDave Airlie } 255f1f62f2cSDave Airlie break; 256f1f62f2cSDave Airlie } 257546b959eSThomas Zimmermann } 258546b959eSThomas Zimmermann 259546b959eSThomas Zimmermann static void ast_detect_tx_chip(struct ast_device *ast, bool need_post) 260546b959eSThomas Zimmermann { 261546b959eSThomas Zimmermann struct drm_device *dev = &ast->base; 262546b959eSThomas Zimmermann u8 jreg; 263f1f62f2cSDave Airlie 264d1b98557SBenjamin Herrenschmidt /* Check 3rd Tx option (digital output afaik) */ 2657f35680aSThomas Zimmermann ast->tx_chip_types |= AST_TX_NONE_BIT; 266d1b98557SBenjamin Herrenschmidt 267d1b98557SBenjamin Herrenschmidt /* 268d1b98557SBenjamin Herrenschmidt * VGACRA3 Enhanced Color Mode Register, check if DVO is already 269d1b98557SBenjamin Herrenschmidt * enabled, in that case, assume we have a SIL164 TMDS transmitter 27042fb1427SBenjamin Herrenschmidt * 27142fb1427SBenjamin Herrenschmidt * Don't make that assumption if we the chip wasn't enabled and 27242fb1427SBenjamin Herrenschmidt * is at power-on reset, otherwise we'll incorrectly "detect" a 27342fb1427SBenjamin Herrenschmidt * SIL164 when there is none. 274d1b98557SBenjamin Herrenschmidt */ 2753bfe25b5SThomas Zimmermann if (!need_post) { 27683c6620bSDave Airlie jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xa3, 0xff); 27783c6620bSDave Airlie if (jreg & 0x80) 2787f35680aSThomas Zimmermann ast->tx_chip_types = AST_TX_SIL164_BIT; 27942fb1427SBenjamin Herrenschmidt } 280d1b98557SBenjamin Herrenschmidt 281ecf64579SThomas Zimmermann if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast) || IS_AST_GEN6(ast)) { 282d1b98557SBenjamin Herrenschmidt /* 283ecf64579SThomas Zimmermann * On AST GEN4+, look the configuration set by the SoC in 284d1b98557SBenjamin Herrenschmidt * the SOC scratch register #1 bits 11:8 (interestingly marked 28542fb1427SBenjamin Herrenschmidt * as "reserved" in the spec) 286d1b98557SBenjamin Herrenschmidt */ 28783c6620bSDave Airlie jreg = ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xd1, 0xff); 28883c6620bSDave Airlie switch (jreg) { 28983c6620bSDave Airlie case 0x04: 2907f35680aSThomas Zimmermann ast->tx_chip_types = AST_TX_SIL164_BIT; 29183c6620bSDave Airlie break; 29283c6620bSDave Airlie case 0x08: 2934bc85b82SThomas Zimmermann ast->dp501_fw_addr = drmm_kzalloc(dev, 32*1024, GFP_KERNEL); 29483c6620bSDave Airlie if (ast->dp501_fw_addr) { 29583c6620bSDave Airlie /* backup firmware */ 29683c6620bSDave Airlie if (ast_backup_fw(dev, ast->dp501_fw_addr, 32*1024)) { 2974bc85b82SThomas Zimmermann drmm_kfree(dev, ast->dp501_fw_addr); 29883c6620bSDave Airlie ast->dp501_fw_addr = NULL; 29983c6620bSDave Airlie } 30083c6620bSDave Airlie } 301df561f66SGustavo A. R. Silva fallthrough; 30283c6620bSDave Airlie case 0x0c: 3037f35680aSThomas Zimmermann ast->tx_chip_types = AST_TX_DP501_BIT; 30483c6620bSDave Airlie } 305ecf64579SThomas Zimmermann } else if (IS_AST_GEN7(ast)) { 306bed61c8fSJammy Huang if (ast_get_index_reg_mask(ast, AST_IO_CRTC_PORT, 0xD1, TX_TYPE_MASK) == 307bed61c8fSJammy Huang ASTDP_DPMCU_TX) { 308bed61c8fSJammy Huang ast->tx_chip_types = AST_TX_ASTDP_BIT; 309bed61c8fSJammy Huang ast_dp_launch(&ast->base); 310bed61c8fSJammy Huang } 311bed61c8fSJammy Huang } 31283c6620bSDave Airlie 313d1b98557SBenjamin Herrenschmidt /* Print stuff for diagnostic purposes */ 3147f35680aSThomas Zimmermann if (ast->tx_chip_types & AST_TX_NONE_BIT) 3157f35680aSThomas Zimmermann drm_info(dev, "Using analog VGA\n"); 3167f35680aSThomas Zimmermann if (ast->tx_chip_types & AST_TX_SIL164_BIT) 3171a19b4cbSThomas Zimmermann drm_info(dev, "Using Sil164 TMDS transmitter\n"); 3187f35680aSThomas Zimmermann if (ast->tx_chip_types & AST_TX_DP501_BIT) 3191a19b4cbSThomas Zimmermann drm_info(dev, "Using DP501 DisplayPort transmitter\n"); 320bed61c8fSJammy Huang if (ast->tx_chip_types & AST_TX_ASTDP_BIT) 321bed61c8fSJammy Huang drm_info(dev, "Using ASPEED DisplayPort transmitter\n"); 322312fec14SDave Airlie } 323312fec14SDave Airlie 324312fec14SDave Airlie static int ast_get_dram_info(struct drm_device *dev) 325312fec14SDave Airlie { 32646fb883cSThomas Zimmermann struct device_node *np = dev->dev->of_node; 3275abaa683SThomas Zimmermann struct ast_device *ast = to_ast_device(dev); 32871f677a9SRussell Currey uint32_t mcr_cfg, mcr_scu_mpll, mcr_scu_strap; 32971f677a9SRussell Currey uint32_t denum, num, div, ref_pll, dsel; 330312fec14SDave Airlie 33171f677a9SRussell Currey switch (ast->config_mode) { 33271f677a9SRussell Currey case ast_use_dt: 33371f677a9SRussell Currey /* 33471f677a9SRussell Currey * If some properties are missing, use reasonable 335ecf64579SThomas Zimmermann * defaults for GEN5 33671f677a9SRussell Currey */ 33771f677a9SRussell Currey if (of_property_read_u32(np, "aspeed,mcr-configuration", 33871f677a9SRussell Currey &mcr_cfg)) 33971f677a9SRussell Currey mcr_cfg = 0x00000577; 34071f677a9SRussell Currey if (of_property_read_u32(np, "aspeed,mcr-scu-mpll", 34171f677a9SRussell Currey &mcr_scu_mpll)) 34271f677a9SRussell Currey mcr_scu_mpll = 0x000050C0; 34371f677a9SRussell Currey if (of_property_read_u32(np, "aspeed,mcr-scu-strap", 34471f677a9SRussell Currey &mcr_scu_strap)) 34571f677a9SRussell Currey mcr_scu_strap = 0; 34671f677a9SRussell Currey break; 34771f677a9SRussell Currey case ast_use_p2a: 34871f677a9SRussell Currey ast_write32(ast, 0xf004, 0x1e6e0000); 34971f677a9SRussell Currey ast_write32(ast, 0xf000, 0x1); 35071f677a9SRussell Currey mcr_cfg = ast_read32(ast, 0x10004); 35171f677a9SRussell Currey mcr_scu_mpll = ast_read32(ast, 0x10120); 35271f677a9SRussell Currey mcr_scu_strap = ast_read32(ast, 0x10170); 35371f677a9SRussell Currey break; 35471f677a9SRussell Currey case ast_use_defaults: 35571f677a9SRussell Currey default: 3566c971c09SY.C. Chen ast->dram_bus_width = 16; 3576c971c09SY.C. Chen ast->dram_type = AST_DRAM_1Gx16; 358ecf64579SThomas Zimmermann if (IS_AST_GEN6(ast)) 3599f93c8b3SY.C. Chen ast->mclk = 800; 3609f93c8b3SY.C. Chen else 3616c971c09SY.C. Chen ast->mclk = 396; 36271f677a9SRussell Currey return 0; 3636c971c09SY.C. Chen } 364312fec14SDave Airlie 36571f677a9SRussell Currey if (mcr_cfg & 0x40) 366312fec14SDave Airlie ast->dram_bus_width = 16; 367312fec14SDave Airlie else 368312fec14SDave Airlie ast->dram_bus_width = 32; 369312fec14SDave Airlie 370ecf64579SThomas Zimmermann if (IS_AST_GEN6(ast)) { 3719f93c8b3SY.C. Chen switch (mcr_cfg & 0x03) { 3729f93c8b3SY.C. Chen case 0: 3739f93c8b3SY.C. Chen ast->dram_type = AST_DRAM_1Gx16; 3749f93c8b3SY.C. Chen break; 3759f93c8b3SY.C. Chen default: 3769f93c8b3SY.C. Chen case 1: 3779f93c8b3SY.C. Chen ast->dram_type = AST_DRAM_2Gx16; 3789f93c8b3SY.C. Chen break; 3799f93c8b3SY.C. Chen case 2: 3809f93c8b3SY.C. Chen ast->dram_type = AST_DRAM_4Gx16; 3819f93c8b3SY.C. Chen break; 3829f93c8b3SY.C. Chen case 3: 3839f93c8b3SY.C. Chen ast->dram_type = AST_DRAM_8Gx16; 3849f93c8b3SY.C. Chen break; 3859f93c8b3SY.C. Chen } 386ecf64579SThomas Zimmermann } else if (IS_AST_GEN4(ast) || IS_AST_GEN5(ast)) { 38771f677a9SRussell Currey switch (mcr_cfg & 0x03) { 388312fec14SDave Airlie case 0: 389312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx16; 390312fec14SDave Airlie break; 391312fec14SDave Airlie default: 392312fec14SDave Airlie case 1: 393312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx16; 394312fec14SDave Airlie break; 395312fec14SDave Airlie case 2: 396312fec14SDave Airlie ast->dram_type = AST_DRAM_2Gx16; 397312fec14SDave Airlie break; 398312fec14SDave Airlie case 3: 399312fec14SDave Airlie ast->dram_type = AST_DRAM_4Gx16; 400312fec14SDave Airlie break; 401312fec14SDave Airlie } 402312fec14SDave Airlie } else { 40371f677a9SRussell Currey switch (mcr_cfg & 0x0c) { 404312fec14SDave Airlie case 0: 405312fec14SDave Airlie case 4: 406312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx16; 407312fec14SDave Airlie break; 408312fec14SDave Airlie case 8: 40971f677a9SRussell Currey if (mcr_cfg & 0x40) 410312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx16; 411312fec14SDave Airlie else 412312fec14SDave Airlie ast->dram_type = AST_DRAM_512Mx32; 413312fec14SDave Airlie break; 414312fec14SDave Airlie case 0xc: 415312fec14SDave Airlie ast->dram_type = AST_DRAM_1Gx32; 416312fec14SDave Airlie break; 417312fec14SDave Airlie } 418312fec14SDave Airlie } 419312fec14SDave Airlie 42071f677a9SRussell Currey if (mcr_scu_strap & 0x2000) 421312fec14SDave Airlie ref_pll = 14318; 422312fec14SDave Airlie else 423312fec14SDave Airlie ref_pll = 12000; 424312fec14SDave Airlie 42571f677a9SRussell Currey denum = mcr_scu_mpll & 0x1f; 42671f677a9SRussell Currey num = (mcr_scu_mpll & 0x3fe0) >> 5; 42771f677a9SRussell Currey dsel = (mcr_scu_mpll & 0xc000) >> 14; 42871f677a9SRussell Currey switch (dsel) { 429312fec14SDave Airlie case 3: 430312fec14SDave Airlie div = 0x4; 431312fec14SDave Airlie break; 432312fec14SDave Airlie case 2: 433312fec14SDave Airlie case 1: 434312fec14SDave Airlie div = 0x2; 435312fec14SDave Airlie break; 436312fec14SDave Airlie default: 437312fec14SDave Airlie div = 0x1; 438312fec14SDave Airlie break; 439312fec14SDave Airlie } 4406475a7ccSBenjamin Herrenschmidt ast->mclk = ref_pll * (num + 2) / ((denum + 2) * (div * 1000)); 441312fec14SDave Airlie return 0; 442312fec14SDave Airlie } 443312fec14SDave Airlie 44437b42cf9SThomas Zimmermann struct ast_device *ast_device_create(const struct drm_driver *drv, 445fbe01716SThomas Zimmermann struct pci_dev *pdev, 446fbe01716SThomas Zimmermann unsigned long flags) 447312fec14SDave Airlie { 448fbe01716SThomas Zimmermann struct drm_device *dev; 44937b42cf9SThomas Zimmermann struct ast_device *ast; 4503bfe25b5SThomas Zimmermann bool need_post = false; 451312fec14SDave Airlie int ret = 0; 452312fec14SDave Airlie 45337b42cf9SThomas Zimmermann ast = devm_drm_dev_alloc(&pdev->dev, drv, struct ast_device, base); 454e0f5a738SThomas Zimmermann if (IS_ERR(ast)) 455e0f5a738SThomas Zimmermann return ast; 456e0f5a738SThomas Zimmermann dev = &ast->base; 457fbe01716SThomas Zimmermann 458fbe01716SThomas Zimmermann pci_set_drvdata(pdev, dev); 459fbe01716SThomas Zimmermann 460f870231fSThomas Zimmermann ret = drmm_mutex_init(dev, &ast->ioregs_lock); 461f870231fSThomas Zimmermann if (ret) 462f870231fSThomas Zimmermann return ERR_PTR(ret); 463f870231fSThomas Zimmermann 4649ea172a9STakashi Iwai ast->regs = pcim_iomap(pdev, 1, 0); 465e0f5a738SThomas Zimmermann if (!ast->regs) 466e0f5a738SThomas Zimmermann return ERR_PTR(-EIO); 4670dd68309SBenjamin Herrenschmidt 4680dd68309SBenjamin Herrenschmidt /* 4694327a613SJammy Huang * After AST2500, MMIO is enabled by default, and it should be adopted 4704327a613SJammy Huang * to be compatible with Arm. 4710dd68309SBenjamin Herrenschmidt */ 4724327a613SJammy Huang if (pdev->revision >= 0x40) { 4734327a613SJammy Huang ast->ioregs = ast->regs + AST_IO_MM_OFFSET; 4744327a613SJammy Huang } else if (!(pci_resource_flags(pdev, 2) & IORESOURCE_IO)) { 4751a19b4cbSThomas Zimmermann drm_info(dev, "platform has no IO space, trying MMIO\n"); 4760dd68309SBenjamin Herrenschmidt ast->ioregs = ast->regs + AST_IO_MM_OFFSET; 4770dd68309SBenjamin Herrenschmidt } 4780dd68309SBenjamin Herrenschmidt 4790dd68309SBenjamin Herrenschmidt /* "map" IO regs if the above hasn't done so already */ 4800dd68309SBenjamin Herrenschmidt if (!ast->ioregs) { 4819ea172a9STakashi Iwai ast->ioregs = pcim_iomap(pdev, 2, 0); 482e0f5a738SThomas Zimmermann if (!ast->ioregs) 483e0f5a738SThomas Zimmermann return ERR_PTR(-EIO); 4840dd68309SBenjamin Herrenschmidt } 485312fec14SDave Airlie 48648b6701eSThomas Zimmermann ret = ast_init_pci_config(pdev); 48748b6701eSThomas Zimmermann if (ret) 48848b6701eSThomas Zimmermann return ERR_PTR(ret); 48948b6701eSThomas Zimmermann 4903bfe25b5SThomas Zimmermann if (!ast_is_vga_enabled(dev)) { 4913bfe25b5SThomas Zimmermann drm_info(dev, "VGA not enabled on entry, requesting chip POST\n"); 4923bfe25b5SThomas Zimmermann need_post = true; 4933bfe25b5SThomas Zimmermann } 4943bfe25b5SThomas Zimmermann 4953bfe25b5SThomas Zimmermann /* 4963bfe25b5SThomas Zimmermann * If VGA isn't enabled, we need to enable now or subsequent 4973bfe25b5SThomas Zimmermann * access to the scratch registers will fail. 4983bfe25b5SThomas Zimmermann */ 4993bfe25b5SThomas Zimmermann if (need_post) 5003bfe25b5SThomas Zimmermann ast_enable_vga(dev); 5013bfe25b5SThomas Zimmermann 5023bfe25b5SThomas Zimmermann /* Enable extended register access */ 5033bfe25b5SThomas Zimmermann ast_open_key(ast); 504a74ec2bcSThomas Zimmermann ret = ast_enable_mmio(ast); 505a74ec2bcSThomas Zimmermann if (ret) 506a74ec2bcSThomas Zimmermann return ERR_PTR(ret); 5073bfe25b5SThomas Zimmermann 508*95badecbSThomas Zimmermann ret = ast_device_config_init(ast); 509*95badecbSThomas Zimmermann if (ret) 510*95badecbSThomas Zimmermann return ERR_PTR(ret); 5113bfe25b5SThomas Zimmermann 512546b959eSThomas Zimmermann ast_detect_widescreen(ast); 513546b959eSThomas Zimmermann ast_detect_tx_chip(ast, need_post); 514312fec14SDave Airlie 515298360afSRussell Currey ret = ast_get_dram_info(dev); 516298360afSRussell Currey if (ret) 517e0f5a738SThomas Zimmermann return ERR_PTR(ret); 518e0f5a738SThomas Zimmermann 5190149e780SThomas Zimmermann drm_info(dev, "dram MCLK=%u Mhz type=%d bus_width=%d\n", 5200149e780SThomas Zimmermann ast->mclk, ast->dram_type, ast->dram_bus_width); 521312fec14SDave Airlie 522244d0128SThomas Zimmermann if (need_post) 523244d0128SThomas Zimmermann ast_post_gpu(dev); 524244d0128SThomas Zimmermann 525312fec14SDave Airlie ret = ast_mm_init(ast); 526312fec14SDave Airlie if (ret) 527e0f5a738SThomas Zimmermann return ERR_PTR(ret); 528312fec14SDave Airlie 529ba4e0339SKuoHsiang Chou /* map reserved buffer */ 530ba4e0339SKuoHsiang Chou ast->dp501_fw_buf = NULL; 531f2fa5a99SThomas Zimmermann if (ast->vram_size < pci_resource_len(pdev, 0)) { 532f2fa5a99SThomas Zimmermann ast->dp501_fw_buf = pci_iomap_range(pdev, 0, ast->vram_size, 0); 533ba4e0339SKuoHsiang Chou if (!ast->dp501_fw_buf) 534ba4e0339SKuoHsiang Chou drm_info(dev, "failed to map reserved buffer!\n"); 535ba4e0339SKuoHsiang Chou } 536ba4e0339SKuoHsiang Chou 537e6949ff3SThomas Zimmermann ret = ast_mode_config_init(ast); 5381728bf64SThomas Zimmermann if (ret) 539e0f5a738SThomas Zimmermann return ERR_PTR(ret); 540312fec14SDave Airlie 541cff0adcaSThomas Zimmermann return ast; 542312fec14SDave Airlie } 543