1 /* SPDX-License-Identifier: GPL-2.0+ */ 2 /* 3 * Copyright (C) 2022 Amarula Solutions(India) 4 * Author: Jagan Teki <jagan@amarulasolutions.com> 5 */ 6 7 #ifndef __SAMSUNG_DSIM__ 8 #define __SAMSUNG_DSIM__ 9 10 #include <linux/gpio/consumer.h> 11 #include <linux/regulator/consumer.h> 12 13 #include <drm/drm_atomic_helper.h> 14 #include <drm/drm_bridge.h> 15 #include <drm/drm_mipi_dsi.h> 16 #include <drm/drm_of.h> 17 18 struct platform_device; 19 struct samsung_dsim; 20 21 #define DSIM_STATE_ENABLED BIT(0) 22 #define DSIM_STATE_INITIALIZED BIT(1) 23 #define DSIM_STATE_CMD_LPM BIT(2) 24 #define DSIM_STATE_VIDOUT_AVAILABLE BIT(3) 25 26 enum samsung_dsim_type { 27 DSIM_TYPE_EXYNOS3250, 28 DSIM_TYPE_EXYNOS4210, 29 DSIM_TYPE_EXYNOS5410, 30 DSIM_TYPE_EXYNOS5422, 31 DSIM_TYPE_EXYNOS5433, 32 DSIM_TYPE_EXYNOS7870, 33 DSIM_TYPE_IMX8MM, 34 DSIM_TYPE_IMX8MP, 35 DSIM_TYPE_COUNT, 36 }; 37 38 #define samsung_dsim_hw_is_exynos(hw) \ 39 ((hw) >= DSIM_TYPE_EXYNOS3250 && (hw) <= DSIM_TYPE_EXYNOS5433) 40 41 struct samsung_dsim_transfer { 42 struct list_head list; 43 struct completion completed; 44 int result; 45 struct mipi_dsi_packet packet; 46 u16 flags; 47 u16 tx_done; 48 49 u8 *rx_payload; 50 u16 rx_len; 51 u16 rx_done; 52 }; 53 54 struct samsung_dsim_driver_data { 55 const unsigned int *reg_ofs; 56 unsigned int plltmr_reg; 57 unsigned int has_legacy_status_reg:1; 58 unsigned int has_freqband:1; 59 unsigned int has_clklane_stop:1; 60 unsigned int has_broken_fifoctrl_emptyhdr:1; 61 unsigned int has_sfrctrl:1; 62 struct clk_bulk_data *clk_data; 63 unsigned int num_clks; 64 unsigned int min_freq; 65 unsigned int max_freq; 66 unsigned int wait_for_hdr_fifo; 67 unsigned int wait_for_reset; 68 unsigned int num_bits_resol; 69 unsigned int video_mode_bit; 70 unsigned int pll_stable_bit; 71 unsigned int esc_clken_bit; 72 unsigned int byte_clken_bit; 73 unsigned int tx_req_hsclk_bit; 74 unsigned int lane_esc_clk_bit; 75 unsigned int lane_esc_data_offset; 76 unsigned int pll_p_offset; 77 unsigned int pll_m_offset; 78 unsigned int pll_s_offset; 79 unsigned int main_vsa_offset; 80 const unsigned int *reg_values; 81 unsigned int pll_fin_min; 82 unsigned int pll_fin_max; 83 u16 m_min; 84 u16 m_max; 85 }; 86 87 struct samsung_dsim_host_ops { 88 int (*register_host)(struct samsung_dsim *dsim); 89 void (*unregister_host)(struct samsung_dsim *dsim); 90 int (*attach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device); 91 void (*detach)(struct samsung_dsim *dsim, struct mipi_dsi_device *device); 92 irqreturn_t (*te_irq_handler)(struct samsung_dsim *dsim); 93 }; 94 95 struct samsung_dsim_plat_data { 96 enum samsung_dsim_type hw_type; 97 const struct samsung_dsim_host_ops *host_ops; 98 }; 99 100 struct samsung_dsim { 101 struct mipi_dsi_host dsi_host; 102 struct drm_bridge bridge; 103 struct drm_bridge *out_bridge; 104 struct device *dev; 105 struct drm_display_mode mode; 106 107 void __iomem *reg_base; 108 struct phy *phy; 109 struct clk *pll_clk; 110 struct regulator_bulk_data supplies[2]; 111 int irq; 112 struct gpio_desc *te_gpio; 113 114 u32 pll_clk_rate; 115 u32 burst_clk_rate; 116 u32 hs_clock; 117 u32 esc_clk_rate; 118 u32 lanes; 119 u32 mode_flags; 120 u32 format; 121 122 bool swap_dn_dp_clk; 123 bool swap_dn_dp_data; 124 int state; 125 struct drm_property *brightness; 126 struct completion completed; 127 128 spinlock_t transfer_lock; /* protects transfer_list */ 129 struct list_head transfer_list; 130 131 const struct samsung_dsim_driver_data *driver_data; 132 const struct samsung_dsim_plat_data *plat_data; 133 134 void *priv; 135 }; 136 137 extern int samsung_dsim_probe(struct platform_device *pdev); 138 extern void samsung_dsim_remove(struct platform_device *pdev); 139 extern const struct dev_pm_ops samsung_dsim_pm_ops; 140 141 #endif /* __SAMSUNG_DSIM__ */ 142