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/davinci_emac.h>
  12 #include <linux/gpio.h>
  13 #include <linux/init.h>
  14 #include <linux/kernel.h>
  15 #include <linux/of_platform.h>
  16 #include <linux/wl12xx.h>
  17
  18 #include <linux/platform_data/pinctrl-single.h>
  19
  20 #include "am35xx.h"
  21 #include "common.h"
  22 #include "common-board-devices.h"
  23 #include "dss-common.h"
  24 #include "control.h"
  25
  26 struct pdata_init {
  27         const char *compatible;
  28         void (*fn)(void);
  29 };
  30
  31 struct of_dev_auxdata omap_auxdata_lookup[];
  32 static struct twl4030_gpio_platform_data twl_gpio_auxdata;
  33
  34 /*
  35  * Create alias for USB host PHY clock.
  36  * Remove this when clock phandle can be provided via DT
  37  */
  38 static void __init __used legacy_init_ehci_clk(char *clkname)
  39 {
  40         int ret;
  41
  42         ret = clk_add_alias("main_clk", NULL, clkname, NULL);
  43         if (ret)
  44                 pr_err("%s:Failed to add main_clk alias to %s :%d\n",
  45                        __func__, clkname, ret);
  46 }
  47
  48 #if IS_ENABLED(CONFIG_WL12XX)
  49
  50 static struct wl12xx_platform_data wl12xx __initdata;
  51
  52 static void __init __used legacy_init_wl12xx(unsigned ref_clock,
  53                                              unsigned tcxo_clock,
  54                                              int gpio)
  55 {
  56         int res;
  57
  58         wl12xx.board_ref_clock = ref_clock;
  59         wl12xx.board_tcxo_clock = tcxo_clock;
  60         wl12xx.irq = gpio_to_irq(gpio);
  61
  62         res = wl12xx_set_platform_data(&wl12xx);
  63         if (res) {
  64                 pr_err("error setting wl12xx data: %d\n", res);
  65                 return;
  66         }
  67 }
  68 #else
  69 static inline void legacy_init_wl12xx(unsigned ref_clock,
  70                                       unsigned tcxo_clock,
  71                                       int gpio)
  72 {
  73 }
  74 #endif
  75
  76 #ifdef CONFIG_MACH_NOKIA_N8X0
  77 static void __init omap2420_n8x0_legacy_init(void)
  78 {
  79         omap_auxdata_lookup[0].platform_data = n8x0_legacy_init();
  80 }
  81 #else
  82 #define omap2420_n8x0_legacy_init       NULL
  83 #endif
  84
  85 #ifdef CONFIG_ARCH_OMAP3
  86 static void __init hsmmc2_internal_input_clk(void)
  87 {
  88         u32 reg;
  89
  90         reg = omap_ctrl_readl(OMAP343X_CONTROL_DEVCONF1);
  91         reg |= OMAP2_MMCSDIO2ADPCLKISEL;
  92         omap_ctrl_writel(reg, OMAP343X_CONTROL_DEVCONF1);
  93 }
  94
  95 static void __init omap3_igep0020_legacy_init(void)
  96 {
  97         omap3_igep2_display_init_of();
  98 }
  99
 100 static void __init omap3_evm_legacy_init(void)
 101 {
 102         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 149);
 103 }
 104
 105 static void __init omap3_zoom_legacy_init(void)
 106 {
 107         legacy_init_wl12xx(WL12XX_REFCLOCK_26, 0, 162);
 108 }
 109
 110 static void am35xx_enable_emac_int(void)
 111 {
 112         u32 v;
 113
 114         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 115         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR |
 116               AM35XX_CPGMAC_C0_MISC_PULSE_CLR | AM35XX_CPGMAC_C0_RX_THRESH_CLR);
 117         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 118         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 119 }
 120
 121 static void am35xx_disable_emac_int(void)
 122 {
 123         u32 v;
 124
 125         v = omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR);
 126         v |= (AM35XX_CPGMAC_C0_RX_PULSE_CLR | AM35XX_CPGMAC_C0_TX_PULSE_CLR);
 127         omap_ctrl_writel(v, AM35XX_CONTROL_LVL_INTR_CLEAR);
 128         omap_ctrl_readl(AM35XX_CONTROL_LVL_INTR_CLEAR); /* OCP barrier */
 129 }
 130
 131 static struct emac_platform_data am35xx_emac_pdata = {
 132         .interrupt_enable       = am35xx_enable_emac_int,
 133         .interrupt_disable      = am35xx_disable_emac_int,
 134 };
 135
 136 static void __init am3517_evm_legacy_init(void)
 137 {
 138         u32 v;
 139
 140         v = omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET);
 141         v &= ~AM35XX_CPGMACSS_SW_RST;
 142         omap_ctrl_writel(v, AM35XX_CONTROL_IP_SW_RESET);
 143         omap_ctrl_readl(AM35XX_CONTROL_IP_SW_RESET); /* OCP barrier */
 144 }
 145 #endif /* CONFIG_ARCH_OMAP3 */
 146
 147 #ifdef CONFIG_ARCH_OMAP4
 148 static void __init omap4_sdp_legacy_init(void)
 149 {
 150         omap_4430sdp_display_init_of();
 151         legacy_init_wl12xx(WL12XX_REFCLOCK_26,
 152                            WL12XX_TCXOCLOCK_26, 53);
 153 }
 154
 155 static void __init omap4_panda_legacy_init(void)
 156 {
 157         omap4_panda_display_init_of();
 158         legacy_init_ehci_clk("auxclk3_ck");
 159         legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 160 }
 161 #endif
 162
 163 #ifdef CONFIG_SOC_OMAP5
 164 static void __init omap5_uevm_legacy_init(void)
 165 {
 166         legacy_init_ehci_clk("auxclk1_ck");
 167 }
 168 #endif
 169
 170 static struct pcs_pdata pcs_pdata;
 171
 172 void omap_pcs_legacy_init(int irq, void (*rearm)(void))
 173 {
 174         pcs_pdata.irq = irq;
 175         pcs_pdata.rearm = rearm;
 176 }
 177
 178 /*
 179  * GPIOs for TWL are initialized by the I2C bus and need custom
 180  * handing until DSS has device tree bindings.
 181  */
 182 void omap_auxdata_legacy_init(struct device *dev)
 183 {
 184         if (dev->platform_data)
 185                 return;
 186
 187         if (strcmp("twl4030-gpio", dev_name(dev)))
 188                 return;
 189
 190         dev->platform_data = &twl_gpio_auxdata;
 191 }
 192
 193 /*
 194  * Few boards still need auxdata populated before we populate
 195  * the dev entries in of_platform_populate().
 196  */
 197 static struct pdata_init auxdata_quirks[] __initdata = {
 198 #ifdef CONFIG_SOC_OMAP2420
 199         { "nokia,n800", omap2420_n8x0_legacy_init, },
 200         { "nokia,n810", omap2420_n8x0_legacy_init, },
 201         { "nokia,n810-wimax", omap2420_n8x0_legacy_init, },
 202 #endif
 203         { /* sentinel */ },
 204 };
 205
 206 struct of_dev_auxdata omap_auxdata_lookup[] __initdata = {
 207 #ifdef CONFIG_MACH_NOKIA_N8X0
 208         OF_DEV_AUXDATA("ti,omap2420-mmc", 0x4809c000, "mmci-omap.0", NULL),
 209 #endif
 210 #ifdef CONFIG_ARCH_OMAP3
 211         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002030, "48002030.pinmux", &pcs_pdata),
 212         OF_DEV_AUXDATA("ti,omap3-padconf", 0x48002a00, "48002a00.pinmux", &pcs_pdata),
 213         /* Only on am3517 */
 214         OF_DEV_AUXDATA("ti,davinci_mdio", 0x5c030000, "davinci_mdio.0", NULL),
 215         OF_DEV_AUXDATA("ti,am3517-emac", 0x5c000000, "davinci_emac.0",
 216                        &am35xx_emac_pdata),
 217 #endif
 218 #ifdef CONFIG_ARCH_OMAP4
 219         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a100040, "4a100040.pinmux", &pcs_pdata),
 220         OF_DEV_AUXDATA("ti,omap4-padconf", 0x4a31e040, "4a31e040.pinmux", &pcs_pdata),
 221 #endif
 222         { /* sentinel */ },
 223 };
 224
 225 /*
 226  * Few boards still need to initialize some legacy devices with
 227  * platform data until the drivers support device tree.
 228  */
 229 static struct pdata_init pdata_quirks[] __initdata = {
 230 #ifdef CONFIG_ARCH_OMAP3
 231         { "nokia,omap3-n900", hsmmc2_internal_input_clk, },
 232         { "nokia,omap3-n9", hsmmc2_internal_input_clk, },
 233         { "nokia,omap3-n950", hsmmc2_internal_input_clk, },
 234         { "isee,omap3-igep0020", omap3_igep0020_legacy_init, },
 235         { "ti,omap3-evm-37xx", omap3_evm_legacy_init, },
 236         { "ti,omap3-zoom3", omap3_zoom_legacy_init, },
 237         { "ti,am3517-evm", am3517_evm_legacy_init, },
 238 #endif
 239 #ifdef CONFIG_ARCH_OMAP4
 240         { "ti,omap4-sdp", omap4_sdp_legacy_init, },
 241         { "ti,omap4-panda", omap4_panda_legacy_init, },
 242 #endif
 243 #ifdef CONFIG_SOC_OMAP5
 244         { "ti,omap5-uevm", omap5_uevm_legacy_init, },
 245 #endif
 246         { /* sentinel */ },
 247 };
 248
 249 static void pdata_quirks_check(struct pdata_init *quirks)
 250 {
 251         while (quirks->compatible) {
 252                 if (of_machine_is_compatible(quirks->compatible)) {
 253                         if (quirks->fn)
 254                                 quirks->fn();
 255                         break;
 256                 }
 257                 quirks++;
 258         }
 259 }
 260
 261 void __init pdata_quirks_init(struct of_device_id *omap_dt_match_table)
 262 {
 263         omap_sdrc_init(NULL, NULL);
 264         pdata_quirks_check(auxdata_quirks);
 265         of_platform_populate(NULL, omap_dt_match_table,
 266                              omap_auxdata_lookup, NULL);
 267         pdata_quirks_check(pdata_quirks);
 268 }