// SPDX-License-Identifier: GPL-2.0
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/errno.h>
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#include <linux/string.h>
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#include <linux/mm.h>
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#include <linux/slab.h>
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#include <linux/delay.h>
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#include <linux/fb.h>
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#include <linux/ioport.h>
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#include <linux/init.h>
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#include <linux/pci.h>
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#include <linux/vmalloc.h>
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#include <linux/pagemap.h>
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#include <linux/console.h>
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#include <linux/platform_device.h>
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#include <linux/screen_info.h>
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#include "sm750.h"
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#include "sm750_cursor.h"
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#define poke32(addr, data) \
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writel((data), cursor->mmio + (addr))
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/* cursor control for voyager and 718/750*/
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#define HWC_ADDRESS 0x0
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#define HWC_ADDRESS_ENABLE BIT(31)
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#define HWC_ADDRESS_EXT BIT(27)
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#define HWC_ADDRESS_CS BIT(26)
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#define HWC_ADDRESS_ADDRESS_MASK 0x3ffffff
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#define HWC_LOCATION 0x4
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#define HWC_LOCATION_TOP BIT(27)
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#define HWC_LOCATION_Y_SHIFT 16
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#define HWC_LOCATION_Y_MASK (0x7ff << 16)
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#define HWC_LOCATION_LEFT BIT(11)
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#define HWC_LOCATION_X_MASK 0x7ff
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#define HWC_COLOR_12 0x8
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#define HWC_COLOR_12_2_RGB565_SHIFT 16
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#define HWC_COLOR_12_2_RGB565_MASK (0xffff << 16)
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#define HWC_COLOR_12_1_RGB565_MASK 0xffff
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#define HWC_COLOR_3 0xC
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#define HWC_COLOR_3_RGB565_MASK 0xffff
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/* hw_cursor_xxx works for voyager,718 and 750 */
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void sm750_hw_cursor_enable(struct lynx_cursor *cursor)
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{
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u32 reg;
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reg = (cursor->offset & HWC_ADDRESS_ADDRESS_MASK) | HWC_ADDRESS_ENABLE;
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poke32(HWC_ADDRESS, reg);
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}
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void sm750_hw_cursor_disable(struct lynx_cursor *cursor)
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{
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poke32(HWC_ADDRESS, 0);
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}
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void sm750_hw_cursor_setSize(struct lynx_cursor *cursor, int w, int h)
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{
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cursor->w = w;
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cursor->h = h;
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}
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void sm750_hw_cursor_setPos(struct lynx_cursor *cursor, int x, int y)
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{
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u32 reg;
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reg = ((y << HWC_LOCATION_Y_SHIFT) & HWC_LOCATION_Y_MASK) |
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(x & HWC_LOCATION_X_MASK);
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poke32(HWC_LOCATION, reg);
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}
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void sm750_hw_cursor_setColor(struct lynx_cursor *cursor, u32 fg, u32 bg)
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{
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u32 reg = (fg << HWC_COLOR_12_2_RGB565_SHIFT) &
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HWC_COLOR_12_2_RGB565_MASK;
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poke32(HWC_COLOR_12, reg | (bg & HWC_COLOR_12_1_RGB565_MASK));
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poke32(HWC_COLOR_3, 0xffe0);
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}
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void sm750_hw_cursor_setData(struct lynx_cursor *cursor, u16 rop,
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const u8 *pcol, const u8 *pmsk)
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{
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int i, j, count, pitch, offset;
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u8 color, mask, opr;
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u16 data;
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void __iomem *pbuffer, *pstart;
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/* in byte*/
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pitch = cursor->w >> 3;
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/* in byte */
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count = pitch * cursor->h;
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/* in byte */
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offset = cursor->maxW * 2 / 8;
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data = 0;
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pstart = cursor->vstart;
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pbuffer = pstart;
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for (i = 0; i < count; i++) {
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color = *pcol++;
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mask = *pmsk++;
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data = 0;
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for (j = 0; j < 8; j++) {
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if (mask & (0x80 >> j)) {
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if (rop == ROP_XOR)
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opr = mask ^ color;
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else
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opr = mask & color;
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/* 2 stands for forecolor and 1 for backcolor */
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data |= ((opr & (0x80 >> j)) ? 2 : 1) << (j * 2);
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}
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}
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iowrite16(data, pbuffer);
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/* assume pitch is 1,2,4,8,...*/
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if ((i + 1) % pitch == 0) {
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/* need a return */
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pstart += offset;
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pbuffer = pstart;
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} else {
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pbuffer += sizeof(u16);
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}
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}
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}
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void sm750_hw_cursor_setData2(struct lynx_cursor *cursor, u16 rop,
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const u8 *pcol, const u8 *pmsk)
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{
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int i, j, count, pitch, offset;
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u8 color, mask;
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u16 data;
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void __iomem *pbuffer, *pstart;
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/* in byte*/
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pitch = cursor->w >> 3;
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/* in byte */
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count = pitch * cursor->h;
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/* in byte */
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offset = cursor->maxW * 2 / 8;
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data = 0;
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pstart = cursor->vstart;
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pbuffer = pstart;
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for (i = 0; i < count; i++) {
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color = *pcol++;
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mask = *pmsk++;
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data = 0;
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for (j = 0; j < 8; j++) {
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if (mask & (1 << j))
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data |= ((color & (1 << j)) ? 1 : 2) << (j * 2);
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}
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iowrite16(data, pbuffer);
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/* assume pitch is 1,2,4,8,...*/
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if (!(i & (pitch - 1))) {
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/* need a return */
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pstart += offset;
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pbuffer = pstart;
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} else {
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pbuffer += sizeof(u16);
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}
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}
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}
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