1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3 * Copyright (c) 2012-2015, The Linux Foundation. All rights reserved.
4 */
5
6 #ifndef __DSI_PLL_H__
7 #define __DSI_PLL_H__
8
9 #include <linux/clk-provider.h>
10 #include <linux/delay.h>
11
12 #include "dsi.h"
13
14 #define NUM_DSI_CLOCKS_MAX 6
15 #define MAX_DSI_PLL_EN_SEQS 10
16
17 struct msm_dsi_pll {
18 enum msm_dsi_phy_type type;
19
20 struct clk_hw clk_hw;
21 bool pll_on;
22 bool state_saved;
23
24 unsigned long min_rate;
25 unsigned long max_rate;
26 u32 en_seq_cnt;
27
28 int (*enable_seqs[MAX_DSI_PLL_EN_SEQS])(struct msm_dsi_pll *pll);
29 void (*disable_seq)(struct msm_dsi_pll *pll);
30 int (*get_provider)(struct msm_dsi_pll *pll,
31 struct clk **byte_clk_provider,
32 struct clk **pixel_clk_provider);
33 void (*destroy)(struct msm_dsi_pll *pll);
34 void (*save_state)(struct msm_dsi_pll *pll);
35 int (*restore_state)(struct msm_dsi_pll *pll);
36 int (*set_usecase)(struct msm_dsi_pll *pll,
37 enum msm_dsi_phy_usecase uc);
38 };
39
40 #define hw_clk_to_pll(x) container_of(x, struct msm_dsi_pll, clk_hw)
41
pll_write(void __iomem * reg,u32 data)42 static inline void pll_write(void __iomem *reg, u32 data)
43 {
44 msm_writel(data, reg);
45 }
46
pll_read(const void __iomem * reg)47 static inline u32 pll_read(const void __iomem *reg)
48 {
49 return msm_readl(reg);
50 }
51
pll_write_udelay(void __iomem * reg,u32 data,u32 delay_us)52 static inline void pll_write_udelay(void __iomem *reg, u32 data, u32 delay_us)
53 {
54 pll_write(reg, data);
55 udelay(delay_us);
56 }
57
pll_write_ndelay(void __iomem * reg,u32 data,u32 delay_ns)58 static inline void pll_write_ndelay(void __iomem *reg, u32 data, u32 delay_ns)
59 {
60 pll_write((reg), data);
61 ndelay(delay_ns);
62 }
63
64 /*
65 * DSI PLL Helper functions
66 */
67
68 /* clock callbacks */
69 long msm_dsi_pll_helper_clk_round_rate(struct clk_hw *hw,
70 unsigned long rate, unsigned long *parent_rate);
71 int msm_dsi_pll_helper_clk_prepare(struct clk_hw *hw);
72 void msm_dsi_pll_helper_clk_unprepare(struct clk_hw *hw);
73 /* misc */
74 void msm_dsi_pll_helper_unregister_clks(struct platform_device *pdev,
75 struct clk **clks, u32 num_clks);
76
77 /*
78 * Initialization for Each PLL Type
79 */
80 #ifdef CONFIG_DRM_MSM_DSI_28NM_PHY
81 struct msm_dsi_pll *msm_dsi_pll_28nm_init(struct platform_device *pdev,
82 enum msm_dsi_phy_type type, int id);
83 #else
msm_dsi_pll_28nm_init(struct platform_device * pdev,enum msm_dsi_phy_type type,int id)84 static inline struct msm_dsi_pll *msm_dsi_pll_28nm_init(
85 struct platform_device *pdev, enum msm_dsi_phy_type type, int id)
86 {
87 return ERR_PTR(-ENODEV);
88 }
89 #endif
90 #ifdef CONFIG_DRM_MSM_DSI_28NM_8960_PHY
91 struct msm_dsi_pll *msm_dsi_pll_28nm_8960_init(struct platform_device *pdev,
92 int id);
93 #else
msm_dsi_pll_28nm_8960_init(struct platform_device * pdev,int id)94 static inline struct msm_dsi_pll *msm_dsi_pll_28nm_8960_init(
95 struct platform_device *pdev, int id)
96 {
97 return ERR_PTR(-ENODEV);
98 }
99 #endif
100
101 #ifdef CONFIG_DRM_MSM_DSI_14NM_PHY
102 struct msm_dsi_pll *msm_dsi_pll_14nm_init(struct platform_device *pdev, int id);
103 #else
104 static inline struct msm_dsi_pll *
msm_dsi_pll_14nm_init(struct platform_device * pdev,int id)105 msm_dsi_pll_14nm_init(struct platform_device *pdev, int id)
106 {
107 return ERR_PTR(-ENODEV);
108 }
109 #endif
110 #ifdef CONFIG_DRM_MSM_DSI_10NM_PHY
111 struct msm_dsi_pll *msm_dsi_pll_10nm_init(struct platform_device *pdev, int id);
112 #else
113 static inline struct msm_dsi_pll *
msm_dsi_pll_10nm_init(struct platform_device * pdev,int id)114 msm_dsi_pll_10nm_init(struct platform_device *pdev, int id)
115 {
116 return ERR_PTR(-ENODEV);
117 }
118 #endif
119 #ifdef CONFIG_DRM_MSM_DSI_7NM_PHY
120 struct msm_dsi_pll *msm_dsi_pll_7nm_init(struct platform_device *pdev,
121 enum msm_dsi_phy_type type, int id);
122 #else
123 static inline struct msm_dsi_pll *
msm_dsi_pll_7nm_init(struct platform_device * pdev,enum msm_dsi_phy_type type,int id)124 msm_dsi_pll_7nm_init(struct platform_device *pdev,
125 enum msm_dsi_phy_type type, int id)
126 {
127 return ERR_PTR(-ENODEV);
128 }
129 #endif
130
131 #endif /* __DSI_PLL_H__ */
132
133