3 * Stäubli Faverges - <www.staubli.com>
4 * Pierre AUBERT p.aubert@staubli.com
7 * Martin Krause TQ-Systems GmbH martin.krause@tqs.de
9 * SPDX-License-Identifier: GPL-2.0+
13 * Basic video support for SMI SM501 "Voyager" graphic controller
22 #define read8(ptrReg) \
23 *(volatile unsigned char *)(sm501.isaBase + ptrReg)
25 #define write8(ptrReg,value) \
26 *(volatile unsigned char *)(sm501.isaBase + ptrReg) = value
28 #define read16(ptrReg) \
29 (*(volatile unsigned short *)(sm501.isaBase + ptrReg))
31 #define write16(ptrReg,value) \
32 (*(volatile unsigned short *)(sm501.isaBase + ptrReg) = value)
34 #define read32(ptrReg) \
35 (*(volatile unsigned int *)(sm501.isaBase + ptrReg))
37 #define write32(ptrReg, value) \
38 (*(volatile unsigned int *)(sm501.isaBase + ptrReg) = value)
42 void write_be32(int off, unsigned int val)
44 out_be32((unsigned __iomem *)(sm501.isaBase + off), val);
47 void write_le32(int off, unsigned int val)
49 out_le32((unsigned __iomem *)(sm501.isaBase + off), val);
52 void (*write_reg32)(int off, unsigned int val) = write_be32;
54 /*-----------------------------------------------------------------------------
56 *-----------------------------------------------------------------------------
58 static void SmiSetRegs (void)
61 * The content of the chipset register depends on the board (clocks,
64 const SMI_REGS *preg = board_get_regs ();
66 write_reg32 (preg->Index, preg->Value);
68 * Insert a delay between
75 #ifdef CONFIG_VIDEO_SM501_PCI
76 static struct pci_device_id sm501_pci_tbl[] = {
77 { PCI_VENDOR_ID_SMI, PCI_DEVICE_ID_SMI_501 },
83 * We do not enforce board code to provide empty/unused
84 * functions for this driver and define weak default
87 unsigned int __board_video_init (void)
92 unsigned int board_video_init (void)
93 __attribute__((weak, alias("__board_video_init")));
95 unsigned int __board_video_get_fb (void)
100 unsigned int board_video_get_fb (void)
101 __attribute__((weak, alias("__board_video_get_fb")));
103 void __board_validate_screen (unsigned int base)
107 void board_validate_screen (unsigned int base)
108 __attribute__((weak, alias("__board_validate_screen")));
110 /*-----------------------------------------------------------------------------
112 *-----------------------------------------------------------------------------
114 void *video_hw_init (void)
116 #ifdef CONFIG_VIDEO_SM501_PCI
117 unsigned int pci_mem_base, pci_mmio_base;
119 unsigned short device_id;
125 memset (&sm501, 0, sizeof (GraphicDevice));
127 #ifdef CONFIG_VIDEO_SM501_PCI
130 /* Look for SM501/SM502 chips */
131 devbusfn = pci_find_devices(sm501_pci_tbl, 0);
133 printf ("PCI Controller not found.\n");
138 pci_write_config_dword (devbusfn, PCI_COMMAND,
139 (PCI_COMMAND_MEMORY | PCI_COMMAND_IO));
140 pci_read_config_word (devbusfn, PCI_DEVICE_ID, &device_id);
141 pci_read_config_dword (devbusfn, PCI_REVISION_ID, &id);
142 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_0, &pci_mem_base);
143 pci_read_config_dword (devbusfn, PCI_BASE_ADDRESS_1, &pci_mmio_base);
144 sm501.frameAdrs = pci_mem_to_phys (devbusfn, pci_mem_base);
145 sm501.isaBase = pci_mem_to_phys (devbusfn, pci_mmio_base);
148 write_reg32 = write_le32;
150 mem = in_le32 ((unsigned __iomem *)(sm501.isaBase + 0x10));
151 mem = (mem & 0x0000e000) >> 13;
172 printf ("PCI SM50%d %d MB\n", ((id & 0xff) == 0xC0) ? 2 : 1, mem);
176 * Initialization of the access to the graphic chipset Retreive base
177 * address of the chipset (see board/RPXClassic/eccx.c)
179 if (!sm501.isaBase) {
180 sm501.isaBase = board_video_init ();
185 if (!sm501.frameAdrs) {
186 sm501.frameAdrs = board_video_get_fb ();
187 if (!sm501.frameAdrs)
191 sm501.winSizeX = board_get_width ();
192 sm501.winSizeY = board_get_height ();
194 #if defined(CONFIG_VIDEO_SM501_8BPP)
195 sm501.gdfIndex = GDF__8BIT_INDEX;
196 sm501.gdfBytesPP = 1;
198 #elif defined(CONFIG_VIDEO_SM501_16BPP)
199 sm501.gdfIndex = GDF_16BIT_565RGB;
200 sm501.gdfBytesPP = 2;
202 #elif defined(CONFIG_VIDEO_SM501_32BPP)
203 sm501.gdfIndex = GDF_32BIT_X888RGB;
204 sm501.gdfBytesPP = 4;
206 #error Unsupported SM501 BPP
209 sm501.memSize = sm501.winSizeX * sm501.winSizeY * sm501.gdfBytesPP;
211 /* Load Smi registers */
214 /* (see board/RPXClassic/RPXClassic.c) */
215 board_validate_screen (sm501.isaBase);
217 /* Clear video memory */
219 vm = (unsigned int *)sm501.frameAdrs;