1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef DDK750_CHIP_H__
3#define DDK750_CHIP_H__
4#define DEFAULT_INPUT_CLOCK 14318181 /* Default reference clock */
5#ifndef SM750LE_REVISION_ID
6#define SM750LE_REVISION_ID ((unsigned char)0xfe)
7#endif
8
9#include <linux/io.h>
10#include <linux/ioport.h>
11#include <linux/uaccess.h>
12
13extern void __iomem *mmio750;
14
15/* software control endianness */
16static inline u32 peek32(u32 addr)
17{
18 return readl(addr: addr + mmio750);
19}
20
21static inline void poke32(u32 addr, u32 data)
22{
23 writel(val: data, addr: addr + mmio750);
24}
25
26/* This is all the chips recognized by this library */
27enum logical_chip_type {
28 SM_UNKNOWN,
29 SM718,
30 SM750,
31 SM750LE,
32};
33
34enum clock_type {
35 MXCLK_PLL,
36 PRIMARY_PLL,
37 SECONDARY_PLL,
38 VGA0_PLL,
39 VGA1_PLL,
40};
41
42struct pll_value {
43 enum clock_type clock_type;
44 unsigned long input_freq; /* Input clock frequency to the PLL */
45
46 /* Use this when clockType = PANEL_PLL */
47 unsigned long M;
48 unsigned long N;
49 unsigned long OD;
50 unsigned long POD;
51};
52
53/* input struct to initChipParam() function */
54struct initchip_param {
55 /* Use power mode 0 or 1 */
56 unsigned short power_mode;
57
58 /*
59 * Speed of main chip clock in MHz unit
60 * 0 = keep the current clock setting
61 * Others = the new main chip clock
62 */
63 unsigned short chip_clock;
64
65 /*
66 * Speed of memory clock in MHz unit
67 * 0 = keep the current clock setting
68 * Others = the new memory clock
69 */
70 unsigned short mem_clock;
71
72 /*
73 * Speed of master clock in MHz unit
74 * 0 = keep the current clock setting
75 * Others = the new master clock
76 */
77 unsigned short master_clock;
78
79 /*
80 * 0 = leave all engine state untouched.
81 * 1 = make sure they are off: 2D, Overlay,
82 * video alpha, alpha, hardware cursors
83 */
84 unsigned short set_all_eng_off;
85
86 /*
87 * 0 = Do not reset the memory controller
88 * 1 = Reset the memory controller
89 */
90 unsigned char reset_memory;
91
92 /* More initialization parameter can be added if needed */
93};
94
95enum logical_chip_type sm750_get_chip_type(void);
96void sm750_set_chip_type(unsigned short dev_id, u8 rev_id);
97unsigned int sm750_calc_pll_value(unsigned int request, struct pll_value *pll);
98unsigned int sm750_format_pll_reg(struct pll_value *p_PLL);
99unsigned int ddk750_get_vm_size(void);
100int ddk750_init_hw(struct initchip_param *pinit_param);
101
102#endif
103

source code of linux/drivers/staging/sm750fb/ddk750_chip.h