[v2,3/8] Davinci: jtag_id - use ioremap()

Message ID	1272753528-22981-4-git-send-email-cyril@ti.com (mailing list archive)
State	Superseded
Headers	show Received: from bear.ext.ti.com (bear.ext.ti.com [192.94.94.41]) by demeter.kernel.org (8.14.3/8.14.3) with ESMTP id o41MhdBP025162 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for <patchwork-davinci@patchwork.kernel.org>; Sat, 1 May 2010 22:44:15 GMT From: Cyril Chemparathy <cyril@ti.com> To: davinci-linux-open-source@linux.davincidsp.com Subject: [PATCH v2 3/8] Davinci: jtag_id - use ioremap() Date: Sat, 1 May 2010 18:38:43 -0400 Message-Id: <1272753528-22981-4-git-send-email-cyril@ti.com> In-Reply-To: <1272753528-22981-1-git-send-email-cyril@ti.com> References: <1272753528-22981-1-git-send-email-cyril@ti.com> Cc: sshtylyov@mvista.com Precedence: list MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: davinci-linux-open-source-bounces@linux.davincidsp.com Errors-To: davinci-linux-open-source-bounces@linux.davincidsp.com

diff --git a/arch/arm/mach-davinci/common.c b/arch/arm/mach-davinci/common.c index f8221c5..ddbd57b 100644 --- a/arch/arm/mach-davinci/common.c +++ b/arch/arm/mach-davinci/common.c @@ -37,26 +37,42 @@ void davinci_get_mac_addr(struct memory_accessor *mem_acc, void *context) pr_info("Read MAC addr from EEPROM: %pM\n", mac_addr); } -static struct davinci_id * __init davinci_get_id(u32 jtag_id) +static int __init davinci_init_id(struct davinci_soc_info *soc_info) { - int i; - struct davinci_id *dip; - u8 variant = (jtag_id & 0xf0000000) >> 28; - u16 part_no = (jtag_id & 0x0ffff000) >> 12; + int i; + struct davinci_id *dip; + u8 variant; + u16 part_no; + void __iomem *base; + + base = ioremap(davinci_soc_info.jtag_id_reg, SZ_4K); + if (!base) { + pr_err("Unable to map JTAG ID register\n"); + return -ENOMEM; + } + + soc_info->jtag_id = __raw_readl(base); + iounmap(base); + + variant = (soc_info->jtag_id & 0xf0000000) >> 28; + part_no = (soc_info->jtag_id & 0x0ffff000) >> 12; for (i = 0, dip = davinci_soc_info.ids; i < davinci_soc_info.ids_num; i++, dip++) /* Don't care about the manufacturer right now */ - if ((dip->part_no == part_no) && (dip->variant == variant)) - return dip; - - return NULL; + if ((dip->part_no == part_no) && (dip->variant == variant)) { + soc_info->cpu_id = dip->cpu_id; + pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant); + return 0; + } + + pr_err("Unknown DaVinci JTAG ID 0x%x\n", soc_info->jtag_id); + return -EINVAL; } void __init davinci_common_init(struct davinci_soc_info *soc_info) { int ret; - struct davinci_id *dip; if (!soc_info) { ret = -EINVAL; @@ -84,18 +100,9 @@ void __init davinci_common_init(struct davinci_soc_info *soc_info) * We want to check CPU revision early for cpu_is_xxxx() macros. * IO space mapping must be initialized before we can do that. */ - davinci_soc_info.jtag_id = __raw_readl(davinci_soc_info.jtag_id_base); - - dip = davinci_get_id(davinci_soc_info.jtag_id); - if (!dip) { - ret = -EINVAL; - pr_err("Unknown DaVinci JTAG ID 0x%x\n", - davinci_soc_info.jtag_id); + ret = davinci_init_id(&davinci_soc_info); + if (ret < 0) goto err; - } - - davinci_soc_info.cpu_id = dip->cpu_id; - pr_info("DaVinci %s variant 0x%x\n", dip->name, dip->variant); if (davinci_soc_info.cpu_clks) { ret = davinci_clk_init(davinci_soc_info.cpu_clks); diff --git a/arch/arm/mach-davinci/da830.c b/arch/arm/mach-davinci/da830.c index 4f5727f..115f791 100644 --- a/arch/arm/mach-davinci/da830.c +++ b/arch/arm/mach-davinci/da830.c @@ -1188,6 +1188,7 @@ static struct davinci_timer_info da830_timer_info = { static struct davinci_soc_info davinci_soc_info_da830 = { .io_desc = da830_io_desc, .io_desc_num = ARRAY_SIZE(da830_io_desc), + .jtag_id_reg = DA8XX_JTAG_ID_REG, .ids = da830_ids, .ids_num = ARRAY_SIZE(da830_ids), .cpu_clks = da830_clks, @@ -1215,8 +1216,6 @@ void __init da830_init(void) if (WARN(!da8xx_syscfg0_base, "Unable to map syscfg0 module")) return; - davinci_soc_info_da830.jtag_id_base = - DA8XX_SYSCFG0_VIRT(DA8XX_JTAG_ID_REG); davinci_soc_info_da830.pinmux_base = DA8XX_SYSCFG0_VIRT(0x120); davinci_common_init(&davinci_soc_info_da830); diff --git a/arch/arm/mach-davinci/da850.c b/arch/arm/mach-davinci/da850.c index cb7f663..7c0ce45 100644 --- a/arch/arm/mach-davinci/da850.c +++ b/arch/arm/mach-davinci/da850.c @@ -1073,6 +1073,7 @@ no_ddrpll_mem: static struct davinci_soc_info davinci_soc_info_da850 = { .io_desc = da850_io_desc, .io_desc_num = ARRAY_SIZE(da850_io_desc), + .jtag_id_reg = DA8XX_JTAG_ID_REG, .ids = da850_ids, .ids_num = ARRAY_SIZE(da850_ids), .cpu_clks = da850_clks, @@ -1108,8 +1109,6 @@ void __init da850_init(void) if (WARN(!da8xx_syscfg1_base, "Unable to map syscfg1 module")) return; - davinci_soc_info_da850.jtag_id_base = - DA8XX_SYSCFG0_VIRT(DA8XX_JTAG_ID_REG); davinci_soc_info_da850.pinmux_base = DA8XX_SYSCFG0_VIRT(0x120); davinci_common_init(&davinci_soc_info_da850); diff --git a/arch/arm/mach-davinci/dm355.c b/arch/arm/mach-davinci/dm355.c index 277041d..228b6d1 100644 --- a/arch/arm/mach-davinci/dm355.c +++ b/arch/arm/mach-davinci/dm355.c @@ -840,7 +840,7 @@ static struct platform_device dm355_serial_device = { static struct davinci_soc_info davinci_soc_info_dm355 = { .io_desc = dm355_io_desc, .io_desc_num = ARRAY_SIZE(dm355_io_desc), - .jtag_id_base = IO_ADDRESS(0x01c40028), + .jtag_id_reg = 0x01c40028, .ids = dm355_ids, .ids_num = ARRAY_SIZE(dm355_ids), .cpu_clks = dm355_clks, diff --git a/arch/arm/mach-davinci/dm365.c b/arch/arm/mach-davinci/dm365.c index ecdbc67..b396d58 100644 --- a/arch/arm/mach-davinci/dm365.c +++ b/arch/arm/mach-davinci/dm365.c @@ -1045,7 +1045,7 @@ static struct platform_device dm365_serial_device = { static struct davinci_soc_info davinci_soc_info_dm365 = { .io_desc = dm365_io_desc, .io_desc_num = ARRAY_SIZE(dm365_io_desc), - .jtag_id_base = IO_ADDRESS(0x01c40028), + .jtag_id_reg = 0x01c40028, .ids = dm365_ids, .ids_num = ARRAY_SIZE(dm365_ids), .cpu_clks = dm365_clks, diff --git a/arch/arm/mach-davinci/dm644x.c b/arch/arm/mach-davinci/dm644x.c index beb315c..9859567 100644 --- a/arch/arm/mach-davinci/dm644x.c +++ b/arch/arm/mach-davinci/dm644x.c @@ -731,7 +731,7 @@ static struct platform_device dm644x_serial_device = { static struct davinci_soc_info davinci_soc_info_dm644x = { .io_desc = dm644x_io_desc, .io_desc_num = ARRAY_SIZE(dm644x_io_desc), - .jtag_id_base = IO_ADDRESS(0x01c40028), + .jtag_id_reg = 0x01c40028, .ids = dm644x_ids, .ids_num = ARRAY_SIZE(dm644x_ids), .cpu_clks = dm644x_clks, diff --git a/arch/arm/mach-davinci/dm646x.c b/arch/arm/mach-davinci/dm646x.c index 95fc981..f9a8cc4 100644 --- a/arch/arm/mach-davinci/dm646x.c +++ b/arch/arm/mach-davinci/dm646x.c @@ -815,7 +815,7 @@ static struct platform_device dm646x_serial_device = { static struct davinci_soc_info davinci_soc_info_dm646x = { .io_desc = dm646x_io_desc, .io_desc_num = ARRAY_SIZE(dm646x_io_desc), - .jtag_id_base = IO_ADDRESS(0x01c40028), + .jtag_id_reg = 0x01c40028, .ids = dm646x_ids, .ids_num = ARRAY_SIZE(dm646x_ids), .cpu_clks = dm646x_clks, diff --git a/arch/arm/mach-davinci/include/mach/common.h b/arch/arm/mach-davinci/include/mach/common.h index 2dd2226..1078458 100644 --- a/arch/arm/mach-davinci/include/mach/common.h +++ b/arch/arm/mach-davinci/include/mach/common.h @@ -45,7 +45,7 @@ struct davinci_soc_info { unsigned long io_desc_num; u32 cpu_id; u32 jtag_id; - void __iomem *jtag_id_base; + u32 jtag_id_reg; struct davinci_id *ids; unsigned long ids_num; struct clk_lookup *cpu_clks;

[v2,3/8] Davinci: jtag_id - use ioremap()

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