Pileus Git - ~andy/linux/blob - 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/wl12xx.h>
  15
  16 #include "common.h"
  17 #include "common-board-devices.h"
  18 #include "dss-common.h"
  19 #include "control.h"
  20
  21 struct pdata_init {
  22         const char *compatible;
  23         void (*fn)(void);
  24 };
  25
  26 /*
  27  * Create alias for USB host PHY clock.
  28  * Remove this when clock phandle can be provided via DT
  29  */
  30 static void __init __used legacy_init_ehci_clk(char *clkname)
  31 {
  32         int ret;
  33
  34         ret = clk_add_alias("main_clk", NULL, clkname, NULL);
  35         if (ret)
  36                 pr_err("%s:Failed to add main_clk alias to %s :%d\n",
  37                        __func__, clkname, ret);
  38 }
  39
  40 #if IS_ENABLED(CONFIG_WL12XX)
  41
  42 static struct wl12xx_platform_data wl12xx __initdata;
  43
  44 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  45                                              unsigned tcxo_clock,
  46                                              int gpio)
  47 {
  48         int res;
  49
  50         wl12xx.board_ref_clock = ref_clock;
  51         wl12xx.board_tcxo_clock = tcxo_clock;
  52         wl12xx.irq = gpio_to_irq(gpio);
  53
  54         res = wl12xx_set_platform_data(&wl12xx);
  55         if (res) {
  56                 pr_err("error setting wl12xx data: %d\n", res);
  57                 return;
  58         }
  59 }
  60 #else
  61 static inline void legacy_init_wl12xx(unsigned ref_clock,
  62                                       unsigned tcxo_clock,
  63                                       int gpio)
  64 {
  65 }
  66 #endif
  67
  68 #ifdef CONFIG_ARCH_OMAP3
  69 static void __init hsmmc2_internal_input_clk(void)
  70 {
  71         u32 reg;
  72
  73         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  74         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  75         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  76 }
  77
  78 static void __init omap3_igep0020_legacy_init(void)
  79 {
  80         omap3_igep2_display_init_of();
  81 }
  82 #endif /* CONFIG_ARCH_OMAP3 */
  83
  84 #ifdef CONFIG_ARCH_OMAP4
  85 static void __init omap4_sdp_legacy_init(void)
  86 {
  87         omap_4430sdp_display_init_of();
  88         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
  89                            WL12XX_TCXOCLOCK_26, 53);
  90 }
  91
  92 static void __init omap4_panda_legacy_init(void)
  93 {
  94         omap4_panda_display_init_of();
  95         legacy_init_ehci_clk("auxclk3_ck");
  96         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
  97 }
  98 #endif
  99
 100 #ifdef CONFIG_SOC_OMAP5
 101 static void __init omap5_uevm_legacy_init(void)
 102 {
 103         legacy_init_ehci_clk("auxclk1_ck");
 104 }
 105 #endif
 106
 107 static struct pdata_init pdata_quirks[] __initdata = {
 108 #ifdef CONFIG_ARCH_OMAP3
 109         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 110         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 111         { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
 112 #endif
 113 #ifdef CONFIG_ARCH_OMAP4
 114         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 115         { "ti,omap4-panda", omap4_panda_legacy_init, },
 116 #endif
 117 #ifdef CONFIG_SOC_OMAP5
 118         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 119 #endif
 120         { /* sentinel */ },
 121 };
 122
 123 void __init pdata_quirks_init(void)
 124 {
 125         struct pdata_init *quirks = pdata_quirks;
 126
 127         while (quirks->compatible) {
 128                 if (of_machine_is_compatible(quirks->compatible)) {
 129                         if (quirks->fn)
 130                                 quirks->fn();
 131                         break;
 132                 }
 133                 quirks++;
 134         }
 135 }