From be65202a610ca96aa945789c8b0a7bc3529b556e Mon Sep 17 00:00:00 2001 From: Luciano Coelho Date: Thu, 10 May 2012 12:13:41 +0300 Subject: [PATCH] wl18xx: read clock frequency and do top init accordingly Instead of using hardcoded values for a single frequency, we need to read the frequency and use the appropriate values for it in the top initialization. Signed-off-by: Luciano Coelho Signed-off-by: Arik Nemtsov --- drivers/net/wireless/ti/wl18xx/Makefile | 2 +- drivers/net/wireless/ti/wl18xx/io.c | 60 +++++++++++++++++++++++++ drivers/net/wireless/ti/wl18xx/io.h | 28 ++++++++++++ drivers/net/wireless/ti/wl18xx/main.c | 51 +++++++++++++++++++-- drivers/net/wireless/ti/wl18xx/reg.h | 22 +++++++++ drivers/net/wireless/ti/wl18xx/wl18xx.h | 22 +++++++++ 6 files changed, 181 insertions(+), 4 deletions(-) create mode 100644 drivers/net/wireless/ti/wl18xx/io.c create mode 100644 drivers/net/wireless/ti/wl18xx/io.h diff --git a/drivers/net/wireless/ti/wl18xx/Makefile b/drivers/net/wireless/ti/wl18xx/Makefile index 764d598bc96..abd881f4ea0 100644 --- a/drivers/net/wireless/ti/wl18xx/Makefile +++ b/drivers/net/wireless/ti/wl18xx/Makefile @@ -1,3 +1,3 @@ -wl18xx-objs = main.o acx.o tx.o +wl18xx-objs = main.o acx.o tx.o io.o obj-$(CONFIG_WL18XX) += wl18xx.o diff --git a/drivers/net/wireless/ti/wl18xx/io.c b/drivers/net/wireless/ti/wl18xx/io.c new file mode 100644 index 00000000000..598c057e722 --- /dev/null +++ b/drivers/net/wireless/ti/wl18xx/io.c @@ -0,0 +1,60 @@ +/* + * This file is part of wl18xx + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#include "../wlcore/wlcore.h" +#include "../wlcore/io.h" + +#include "io.h" + +void wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val) +{ + u32 tmp; + + if (WARN_ON(addr % 2)) + return; + + if ((addr % 4) == 0) { + tmp = wl1271_read32(wl, addr); + tmp = (tmp & 0xffff0000) | val; + wl1271_write32(wl, addr, tmp); + } else { + tmp = wl1271_read32(wl, addr - 2); + tmp = (tmp & 0xffff) | (val << 16); + wl1271_write32(wl, addr - 2, tmp); + } +} + +u16 wl18xx_top_reg_read(struct wl1271 *wl, int addr) +{ + u32 val; + + if (WARN_ON(addr % 2)) + return 0; + + if ((addr % 4) == 0) { + /* address is 4-bytes aligned */ + val = wl1271_read32(wl, addr); + return val & 0xffff; + } else { + val = wl1271_read32(wl, addr - 2); + return (val & 0xffff0000) >> 16; + } +} diff --git a/drivers/net/wireless/ti/wl18xx/io.h b/drivers/net/wireless/ti/wl18xx/io.h new file mode 100644 index 00000000000..be4e126ff61 --- /dev/null +++ b/drivers/net/wireless/ti/wl18xx/io.h @@ -0,0 +1,28 @@ +/* + * This file is part of wl18xx + * + * Copyright (C) 2011 Texas Instruments + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * version 2 as published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA + * 02110-1301 USA + * + */ + +#ifndef __WL18XX_IO_H__ +#define __WL18XX_IO_H__ + +void wl18xx_top_reg_write(struct wl1271 *wl, int addr, u16 val); +u16 wl18xx_top_reg_read(struct wl1271 *wl, int addr); + +#endif /* __WL18XX_IO_H__ */ diff --git a/drivers/net/wireless/ti/wl18xx/main.c b/drivers/net/wireless/ti/wl18xx/main.c index 0f078860804..ce132494ebe 100644 --- a/drivers/net/wireless/ti/wl18xx/main.c +++ b/drivers/net/wireless/ti/wl18xx/main.c @@ -37,6 +37,7 @@ #include "acx.h" #include "tx.h" #include "wl18xx.h" +#include "io.h" #define WL18XX_RX_CHECKSUM_MASK 0x40 @@ -561,6 +562,18 @@ static const int wl18xx_rtable[REG_TABLE_LEN] = { [REG_RAW_FW_STATUS_ADDR] = WL18XX_FW_STATUS_ADDR, }; +static const struct wl18xx_clk_cfg wl18xx_clk_table[NUM_CLOCK_CONFIGS] = { + [CLOCK_CONFIG_16_2_M] = { 7, 104, 801, 4, true }, + [CLOCK_CONFIG_16_368_M] = { 9, 132, 3751, 4, true }, + [CLOCK_CONFIG_16_8_M] = { 7, 100, 0, 0, false }, + [CLOCK_CONFIG_19_2_M] = { 8, 100, 0, 0, false }, + [CLOCK_CONFIG_26_M] = { 13, 120, 0, 0, false }, + [CLOCK_CONFIG_32_736_M] = { 9, 132, 3751, 4, true }, + [CLOCK_CONFIG_33_6_M] = { 7, 100, 0, 0, false }, + [CLOCK_CONFIG_38_468_M] = { 8, 100, 0, 0, false }, + [CLOCK_CONFIG_52_M] = { 13, 120, 0, 0, false }, +}; + /* TODO: maybe move to a new header file? */ #define WL18XX_FW_NAME "ti-connectivity/wl18xx-fw.bin" @@ -592,15 +605,47 @@ out: static void wl18xx_set_clk(struct wl1271 *wl) { struct wl18xx_priv *priv = wl->priv; + u32 clk_freq; /* write the translated board type to SCR_PAD2 */ wl1271_write32(wl, WL18XX_SCR_PAD2, wl18xx_board_type_to_scrpad2[priv->board_type]); wlcore_set_partition(wl, &wl->ptable[PART_TOP_PRCM_ELP_SOC]); - wl1271_write32(wl, 0x00A02360, 0xD0078); - wl1271_write32(wl, 0x00A0236c, 0x12); - wl1271_write32(wl, 0x00A02390, 0x20118); + + /* TODO: PG2: apparently we need to read the clk type */ + + clk_freq = wl18xx_top_reg_read(wl, PRIMARY_CLK_DETECT); + wl1271_debug(DEBUG_BOOT, "clock freq %d (%d, %d, %d, %d, %s)", clk_freq, + wl18xx_clk_table[clk_freq].n, wl18xx_clk_table[clk_freq].m, + wl18xx_clk_table[clk_freq].p, wl18xx_clk_table[clk_freq].q, + wl18xx_clk_table[clk_freq].swallow ? "swallow" : "spit"); + + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_N, wl18xx_clk_table[clk_freq].n); + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_M, wl18xx_clk_table[clk_freq].m); + + if (wl18xx_clk_table[clk_freq].swallow) { + /* first the 16 lower bits */ + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_Q_FACTOR_CFG_1, + wl18xx_clk_table[clk_freq].q & + PLLSH_WCS_PLL_Q_FACTOR_CFG_1_MASK); + /* then the 16 higher bits, masked out */ + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_Q_FACTOR_CFG_2, + (wl18xx_clk_table[clk_freq].q >> 16) & + PLLSH_WCS_PLL_Q_FACTOR_CFG_2_MASK); + + /* first the 16 lower bits */ + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_P_FACTOR_CFG_1, + wl18xx_clk_table[clk_freq].p & + PLLSH_WCS_PLL_P_FACTOR_CFG_1_MASK); + /* then the 16 higher bits, masked out */ + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_P_FACTOR_CFG_2, + (wl18xx_clk_table[clk_freq].p >> 16) & + PLLSH_WCS_PLL_P_FACTOR_CFG_2_MASK); + } else { + wl18xx_top_reg_write(wl, PLLSH_WCS_PLL_SWALLOW_EN, + PLLSH_WCS_PLL_SWALLOW_EN_VAL2); + } } static void wl18xx_boot_soft_reset(struct wl1271 *wl) diff --git a/drivers/net/wireless/ti/wl18xx/reg.h b/drivers/net/wireless/ti/wl18xx/reg.h index e0170aeba05..1ea3393cff2 100644 --- a/drivers/net/wireless/ti/wl18xx/reg.h +++ b/drivers/net/wireless/ti/wl18xx/reg.h @@ -107,6 +107,28 @@ #define WL18XX_WELP_ARM_COMMAND (WL18XX_REGISTERS_BASE + 0x7100) #define WL18XX_ENABLE (WL18XX_REGISTERS_BASE + 0x01543C) +/* PRCM registers */ +#define PLATFORM_DETECTION 0xA0E3E0 +#define OCS_EN 0xA02080 +#define PRIMARY_CLK_DETECT 0xA020A6 +#define PLLSH_WCS_PLL_N 0xA02362 +#define PLLSH_WCS_PLL_M 0xA02360 +#define PLLSH_WCS_PLL_Q_FACTOR_CFG_1 0xA02364 +#define PLLSH_WCS_PLL_Q_FACTOR_CFG_2 0xA02366 +#define PLLSH_WCS_PLL_P_FACTOR_CFG_1 0xA02368 +#define PLLSH_WCS_PLL_P_FACTOR_CFG_2 0xA0236A +#define PLLSH_WCS_PLL_SWALLOW_EN 0xA0236C +#define PLLSH_WL_PLL_EN 0xA02392 + +#define PLLSH_WCS_PLL_Q_FACTOR_CFG_1_MASK 0xFFFF +#define PLLSH_WCS_PLL_Q_FACTOR_CFG_2_MASK 0x007F +#define PLLSH_WCS_PLL_P_FACTOR_CFG_1_MASK 0xFFFF +#define PLLSH_WCS_PLL_P_FACTOR_CFG_2_MASK 0x000F + +#define PLLSH_WCS_PLL_SWALLOW_EN_VAL1 0x1 +#define PLLSH_WCS_PLL_SWALLOW_EN_VAL2 0x12 + + #define WL18XX_CMD_MBOX_ADDRESS 0xB007B4 #define WL18XX_FW_STATUS_ADDR 0x50F8 diff --git a/drivers/net/wireless/ti/wl18xx/wl18xx.h b/drivers/net/wireless/ti/wl18xx/wl18xx.h index 5bcc7f09f8c..75abb5b48c6 100644 --- a/drivers/net/wireless/ti/wl18xx/wl18xx.h +++ b/drivers/net/wireless/ti/wl18xx/wl18xx.h @@ -56,4 +56,26 @@ struct wl18xx_fw_status_priv { u8 padding[2]; }; +struct wl18xx_clk_cfg { + u32 n; + u32 m; + u32 p; + u32 q; + bool swallow; +}; + +enum { + CLOCK_CONFIG_16_2_M = 1, + CLOCK_CONFIG_16_368_M, + CLOCK_CONFIG_16_8_M, + CLOCK_CONFIG_19_2_M, + CLOCK_CONFIG_26_M, + CLOCK_CONFIG_32_736_M, + CLOCK_CONFIG_33_6_M, + CLOCK_CONFIG_38_468_M, + CLOCK_CONFIG_52_M, + + NUM_CLOCK_CONFIGS, +}; + #endif /* __WL18XX_PRIV_H__ */ -- 2.34.1