483e3bef47
This patch adds support for the TS-5x00 serie of Technologic Systems x86-based Single Board Computers, featuring an AMD Elan520 processor. http://wiki.embeddedarm.com/wiki/#AMD [Peter: explicitly set arch/variant in defconfig, strip trailing spaces] Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com> Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
118 lines
3.6 KiB
Diff
118 lines
3.6 KiB
Diff
From 510acd057785ff52bfdfed6360a44a42f44e078f Mon Sep 17 00:00:00 2001
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From: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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Date: Mon, 7 Jul 2014 15:56:11 -0400
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Subject: [PATCH] x86: (ts5500) add board support for TS-5400
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This patch extends the TS-5500 board support to identify the compatible
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TS-5400 Single Board Computer (ID 0x40).
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It also adds a new "name" sysfs attribute for more human readable
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identification, actually printing "TS-5500" or "TS-5400".
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Signed-off-by: Vivien Didelot <vivien.didelot@savoirfairelinux.com>
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---
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arch/x86/platform/ts5500/ts5500.c | 34 +++++++++++++++++++++++++++-------
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1 file changed, 27 insertions(+), 7 deletions(-)
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diff --git a/arch/x86/platform/ts5500/ts5500.c b/arch/x86/platform/ts5500/ts5500.c
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index 9471b94..127fce2 100644
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--- a/arch/x86/platform/ts5500/ts5500.c
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+++ b/arch/x86/platform/ts5500/ts5500.c
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@@ -31,7 +31,6 @@
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/* Product code register */
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#define TS5500_PRODUCT_CODE_ADDR 0x74
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-#define TS5500_PRODUCT_CODE 0x60 /* TS-5500 product code */
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/* SRAM/RS-485/ADC options, and RS-485 RTS/Automatic RS-485 flags register */
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#define TS5500_SRAM_RS485_ADC_ADDR 0x75
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@@ -64,9 +63,17 @@
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#define TS5500_ADC_CONV_MSB_ADDR 0x197 /* MSB register */
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#define TS5500_ADC_CONV_DELAY 12 /* usec */
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+static const struct ts5x00_info {
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+ const int id;
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+ const char * const name;
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+} ts5x00_info[] = {
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+ { 0x40, "TS-5400" },
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+ { 0x60, "TS-5500" },
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+};
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+
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/**
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* struct ts5500_sbc - TS-5500 board description
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- * @id: Board product ID.
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+ * @info: Board identification.
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* @sram: Flag for SRAM option.
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* @rs485: Flag for RS-485 option.
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* @adc: Flag for Analog/Digital converter option.
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@@ -75,7 +82,7 @@
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* @jumpers: Bitfield for jumpers' state.
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*/
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struct ts5500_sbc {
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- int id;
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+ const struct ts5x00_info *info;
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bool sram;
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bool rs485;
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bool adc;
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@@ -117,18 +124,21 @@ static int __init ts5500_check_signature(void)
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static int __init ts5500_detect_config(struct ts5500_sbc *sbc)
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{
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u8 tmp;
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+ int i;
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int ret = 0;
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if (!request_region(TS5500_PRODUCT_CODE_ADDR, 4, "ts5500"))
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return -EBUSY;
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tmp = inb(TS5500_PRODUCT_CODE_ADDR);
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- if (tmp != TS5500_PRODUCT_CODE) {
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- pr_err("This platform is not a TS-5500 (found ID 0x%x)\n", tmp);
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+ for (i = 0; i < ARRAY_SIZE(ts5x00_info) && !sbc->info; ++i)
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+ if (tmp == ts5x00_info[i].id)
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+ sbc->info = &ts5x00_info[i];
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+ if (!sbc->info) {
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+ pr_err("Not a known TS-5x00 platform (found ID 0x%x)\n", tmp);
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ret = -ENODEV;
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goto cleanup;
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}
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- sbc->id = tmp;
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tmp = inb(TS5500_SRAM_RS485_ADC_ADDR);
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sbc->sram = tmp & TS5500_SRAM;
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@@ -152,7 +162,15 @@ static ssize_t ts5500_show_id(struct device *dev,
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{
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struct ts5500_sbc *sbc = dev_get_drvdata(dev);
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- return sprintf(buf, "0x%.2x\n", sbc->id);
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+ return sprintf(buf, "0x%.2x\n", sbc->info->id);
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+}
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+
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+static ssize_t ts5500_show_name(struct device *dev,
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+ struct device_attribute *attr, char *buf)
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+{
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+ struct ts5500_sbc *sbc = dev_get_drvdata(dev);
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+
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+ return sprintf(buf, "%s\n", sbc->info->name);
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}
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static ssize_t ts5500_show_jumpers(struct device *dev,
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@@ -180,6 +198,7 @@ TS5500_SHOW(ereset)
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TS5500_SHOW(itr)
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static DEVICE_ATTR(id, S_IRUGO, ts5500_show_id, NULL);
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+static DEVICE_ATTR(name, S_IRUGO, ts5500_show_name, NULL);
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static DEVICE_ATTR(jumpers, S_IRUGO, ts5500_show_jumpers, NULL);
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static DEVICE_ATTR(sram, S_IRUGO, ts5500_show_sram, NULL);
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static DEVICE_ATTR(rs485, S_IRUGO, ts5500_show_rs485, NULL);
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@@ -189,6 +208,7 @@ static DEVICE_ATTR(itr, S_IRUGO, ts5500_show_itr, NULL);
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static struct attribute *ts5500_attributes[] = {
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&dev_attr_id.attr,
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+ &dev_attr_name.attr,
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&dev_attr_jumpers.attr,
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&dev_attr_sram.attr,
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&dev_attr_rs485.attr,
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--
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1.9.1
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