arch/arm/mach-omap2/pdata-quirks.c

   1 /*
   2  * Legacy platform_data quirks
   3  *
   4  * Copyright (C) 2013 Texas Instruments
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9  */
  10 #include <linux/clk.h>
  11 #include <linux/gpio.h>
  12 #include <linux/init.h>
  13 #include <linux/kernel.h>
  14 #include <linux/of_platform.h>
  15 #include <linux/wl12xx.h>
  16
  17 #include <linux/platform_data/pinctrl-single.h>
  18
  19 #include "common.h"
  20 #include "common-board-devices.h"
  21 #include "dss-common.h"
  22 #include "control.h"
  23
  24 struct pdata_init {
  25         const char *compatible;
  26         void (*fn)(void);
  27 };
  28
  29 /*
  30  * Create alias for USB host PHY clock.
  31  * Remove this when clock phandle can be provided via DT
  32  */
  33 static void __init __used legacy_init_ehci_clk(char *clkname)
  34 {
  35         int ret;
  36
  37         ret = clk_add_alias("main_clk", NULL, clkname, NULL);
  38         if (ret)
  39                 pr_err("%s:Failed to add main_clk alias to %s :%d\n",
  40                        __func__, clkname, ret);
  41 }
  42
  43 #if IS_ENABLED(CONFIG_WL12XX)
  44
  45 static struct wl12xx_platform_data wl12xx __initdata;
  46
  47 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  48                                              unsigned tcxo_clock,
  49                                              int gpio)
  50 {
  51         int res;
  52
  53         wl12xx.board_ref_clock = ref_clock;
  54         wl12xx.board_tcxo_clock = tcxo_clock;
  55         wl12xx.irq = gpio_to_irq(gpio);
  56
  57         res = wl12xx_set_platform_data(&wl12xx);
  58         if (res) {
  59                 pr_err("error setting wl12xx data: %d\n", res);
  60                 return;
  61         }
  62 }
  63 #else
  64 static inline void legacy_init_wl12xx(unsigned ref_clock,
  65                                       unsigned tcxo_clock,
  66                                       int gpio)
  67 {
  68 }
  69 #endif
  70
  71 #ifdef CONFIG_ARCH_OMAP3
  72 static void __init hsmmc2_internal_input_clk(void)
  73 {
  74         u32 reg;
  75
  76         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  77         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  78         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  79 }
  80
  81 static void __init omap3_igep0020_legacy_init(void)
  82 {
  83         omap3_igep2_display_init_of();
  84 }
  85
  86 static void __init omap3_evm_legacy_init(void)
  87 {
  88         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
  89 }
  90
  91 static void __init omap3_zoom_legacy_init(void)
  92 {
  93         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
  94 }
  95 #endif /* CONFIG_ARCH_OMAP3 */
  96
  97 #ifdef CONFIG_ARCH_OMAP4
  98 static void __init omap4_sdp_legacy_init(void)
  99 {
 100         omap_4430sdp_display_init_of();
 101         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 102                            WL12XX_TCXOCLOCK_26, 53);
 103 }
 104
 105 static void __init omap4_panda_legacy_init(void)
 106 {
 107         omap4_panda_display_init_of();
 108         legacy_init_ehci_clk("auxclk3_ck");
 109         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 110 }
 111 #endif
 112
 113 #ifdef CONFIG_SOC_OMAP5
 114 static void __init omap5_uevm_legacy_init(void)
 115 {
 116         legacy_init_ehci_clk("auxclk1_ck");
 117 }
 118 #endif
 119
 120 static struct pcs_pdata pcs_pdata;
 121
 122 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 123 {
 124         pcs_pdata.irq = irq;
 125         pcs_pdata.rearm = rearm;
 126 }
 127
 128 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 129 #ifdef CONFIG_ARCH_OMAP3
 130         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 131         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 132 #endif
 133 #ifdef CONFIG_ARCH_OMAP4
 134         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 135         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 136 #endif
 137         { /* sentinel */ },
 138 };
 139
 140 static struct pdata_init pdata_quirks[] __initdata = {
 141 #ifdef CONFIG_ARCH_OMAP3
 142         { "nokia,omap3-n900", hsmmc2_internal_input_clk, },
 143         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 144         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 145         { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
 146         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 147         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 148 #endif
 149 #ifdef CONFIG_ARCH_OMAP4
 150         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 151         { "ti,omap4-panda", omap4_panda_legacy_init, },
 152 #endif
 153 #ifdef CONFIG_SOC_OMAP5
 154         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 155 #endif
 156         { /* sentinel */ },
 157 };
 158
 159 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
 160 {
 161         struct pdata_init *quirks = pdata_quirks;
 162
 163         omap_sdrc_init(NULL, NULL);
 164         of_platform_populate(NULL, omap_dt_match_table,
 165                              omap_auxdata_lookup, NULL);
 166
 167         while (quirks->compatible) {
 168                 if (of_machine_is_compatible(quirks->compatible)) {
 169                         if (quirks->fn)
 170                                 quirks->fn();
 171                         break;
 172                 }
 173                 quirks++;
 174         }
 175 }