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Message-Id: <20161229000137.5553-3-f.fainelli@gmail.com>
Date: Wed, 28 Dec 2016 16:01:37 -0800
From: Florian Fainelli <f.fainelli@...il.com>
To: linux-arm-kernel@...ts.infradead.org
Cc: lee.jones@...aro.org, linux@...linux.org.uk,
gregory.clement@...e-electrons.com, andrew@...n.ch,
jason@...edaemon.net, linux-kernel@...r.kernel.org,
Florian Fainelli <f.fainelli@...il.com>
Subject: [PATCH 2/2] ARM: orion5x: Utilize micon MFD driver
Convert the Kurobox Pro and Terastation Pro II/Live machines to utilize
the MFD_MICON driver which currently provides reboot support, but will
later be extended to support LEDs, buttons, FAN control and temperature.
Signed-off-by: Florian Fainelli <f.fainelli@...il.com>
---
arch/arm/mach-orion5x/Kconfig | 4 +
arch/arm/mach-orion5x/kurobox_pro-setup.c | 149 +++----------------------
arch/arm/mach-orion5x/terastation_pro2-setup.c | 149 +++----------------------
3 files changed, 40 insertions(+), 262 deletions(-)
diff --git a/arch/arm/mach-orion5x/Kconfig b/arch/arm/mach-orion5x/Kconfig
index 633442ad4e4c..1146181280d0 100644
--- a/arch/arm/mach-orion5x/Kconfig
+++ b/arch/arm/mach-orion5x/Kconfig
@@ -51,6 +51,8 @@ config MACH_RD88F5182_DT
config MACH_KUROBOX_PRO
bool "KuroBox Pro"
select I2C_BOARDINFO if I2C
+ select MFD_CORE
+ select MFD_MICON
help
Say 'Y' here if you want your kernel to support the
KuroBox Pro platform.
@@ -71,6 +73,8 @@ config MACH_TS209
QNAP TS-109/TS-209 platform.
config MACH_TERASTATION_PRO2
+ select MFD_CORE
+ select MFD_MICON
bool "Buffalo Terastation Pro II/Live"
help
Say 'Y' here if you want your kernel to support the
diff --git a/arch/arm/mach-orion5x/kurobox_pro-setup.c b/arch/arm/mach-orion5x/kurobox_pro-setup.c
index 9dc3f59bed9c..b1c27c93b4c5 100644
--- a/arch/arm/mach-orion5x/kurobox_pro-setup.c
+++ b/arch/arm/mach-orion5x/kurobox_pro-setup.c
@@ -24,6 +24,7 @@
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
#include <linux/platform_data/mtd-orion_nand.h>
+#include <linux/platform_data/micon.h>
#include "common.h"
#include "mpp.h"
#include "orion5x.h"
@@ -180,136 +181,23 @@ static struct mv_sata_platform_data kurobox_pro_sata_data = {
/*****************************************************************************
* Kurobox Pro specific power off method via UART1-attached microcontroller
****************************************************************************/
+struct resource kurobox_pro_micon_res = {
+ .start = UART1_PHYS_BASE,
+ .end = UART1_PHYS_BASE + 0x100,
+ .flags = IORESOURCE_MEM,
+};
-#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
-
-static int kurobox_pro_miconread(unsigned char *buf, int count)
-{
- int i;
- int timeout;
-
- for (i = 0; i < count; i++) {
- timeout = 10;
-
- while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
- if (--timeout == 0)
- break;
- udelay(1000);
- }
-
- if (timeout == 0)
- break;
- buf[i] = readl(UART1_REG(RX));
- }
-
- /* return read bytes */
- return i;
-}
-
-static int kurobox_pro_miconwrite(const unsigned char *buf, int count)
-{
- int i = 0;
-
- while (count--) {
- while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
- barrier();
- writel(buf[i++], UART1_REG(TX));
- }
-
- return 0;
-}
-
-static int kurobox_pro_miconsend(const unsigned char *data, int count)
-{
- int i;
- unsigned char checksum = 0;
- unsigned char recv_buf[40];
- unsigned char send_buf[40];
- unsigned char correct_ack[3];
- int retry = 2;
-
- /* Generate checksum */
- for (i = 0; i < count; i++)
- checksum -= data[i];
-
- do {
- /* Send data */
- kurobox_pro_miconwrite(data, count);
-
- /* send checksum */
- kurobox_pro_miconwrite(&checksum, 1);
-
- if (kurobox_pro_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
- printk(KERN_ERR ">%s: receive failed.\n", __func__);
-
- /* send preamble to clear the receive buffer */
- memset(&send_buf, 0xff, sizeof(send_buf));
- kurobox_pro_miconwrite(send_buf, sizeof(send_buf));
-
- /* make dummy reads */
- mdelay(100);
- kurobox_pro_miconread(recv_buf, sizeof(recv_buf));
- } else {
- /* Generate expected ack */
- correct_ack[0] = 0x01;
- correct_ack[1] = data[1];
- correct_ack[2] = 0x00;
-
- /* checksum Check */
- if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
- recv_buf[3]) & 0xFF) {
- printk(KERN_ERR ">%s: Checksum Error : "
- "Received data[%02x, %02x, %02x, %02x]"
- "\n", __func__, recv_buf[0],
- recv_buf[1], recv_buf[2], recv_buf[3]);
- } else {
- /* Check Received Data */
- if (correct_ack[0] == recv_buf[0] &&
- correct_ack[1] == recv_buf[1] &&
- correct_ack[2] == recv_buf[2]) {
- /* Interval for next command */
- mdelay(10);
-
- /* Receive ACK */
- return 0;
- }
- }
- /* Received NAK or illegal Data */
- printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
- "Received\n", __func__);
- }
- } while (retry--);
-
- /* Interval for next command */
- mdelay(10);
+static struct micon_platform_data kurobox_pro_micon_pdata;
- return -1;
-}
-
-static void kurobox_pro_power_off(void)
-{
- const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
- const unsigned char shutdownwait[] = {0x00, 0x0c};
- const unsigned char poweroff[] = {0x00, 0x06};
- /* 38400 baud divisor */
- const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
-
- pr_info("%s: triggering power-off...\n", __func__);
-
- /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
- writel(0x83, UART1_REG(LCR));
- writel(divisor & 0xff, UART1_REG(DLL));
- writel((divisor >> 8) & 0xff, UART1_REG(DLM));
- writel(0x1b, UART1_REG(LCR));
- writel(0x00, UART1_REG(IER));
- writel(0x07, UART1_REG(FCR));
- writel(0x00, UART1_REG(MCR));
-
- /* Send the commands to shutdown the Kurobox Pro */
- kurobox_pro_miconsend(watchdogkill, sizeof(watchdogkill)) ;
- kurobox_pro_miconsend(shutdownwait, sizeof(shutdownwait)) ;
- kurobox_pro_miconsend(poweroff, sizeof(poweroff));
-}
+static struct platform_device kurobox_pro_micon = {
+ .name = MICON_NAME,
+ .id = -1,
+ .dev = {
+ .platform_data = &kurobox_pro_micon_pdata,
+ },
+ .resource = &kurobox_pro_micon_res,
+ .num_resources = 1,
+};
/*****************************************************************************
* General Setup
@@ -364,6 +252,8 @@ static void __init kurobox_pro_init(void)
KUROBOX_PRO_NOR_BOOT_BASE,
KUROBOX_PRO_NOR_BOOT_SIZE);
platform_device_register(&kurobox_pro_nor_flash);
+ kurobox_pro_micon_pdata.tclk = orion5x_tclk;
+ platform_device_register(&kurobox_pro_micon);
if (machine_is_kurobox_pro()) {
mvebu_mbus_add_window_by_id(ORION_MBUS_DEVBUS_TARGET(0),
@@ -374,9 +264,6 @@ static void __init kurobox_pro_init(void)
}
i2c_register_board_info(0, &kurobox_pro_i2c_rtc, 1);
-
- /* register Kurobox Pro specific power-off method */
- pm_power_off = kurobox_pro_power_off;
}
#ifdef CONFIG_MACH_KUROBOX_PRO
diff --git a/arch/arm/mach-orion5x/terastation_pro2-setup.c b/arch/arm/mach-orion5x/terastation_pro2-setup.c
index deb5e29ac669..7493f64388d6 100644
--- a/arch/arm/mach-orion5x/terastation_pro2-setup.c
+++ b/arch/arm/mach-orion5x/terastation_pro2-setup.c
@@ -19,6 +19,7 @@
#include <linux/mv643xx_eth.h>
#include <linux/i2c.h>
#include <linux/serial_reg.h>
+#include <linux/platform_data/micon.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#include <asm/mach/pci.h>
@@ -159,136 +160,23 @@ static struct i2c_board_info __initdata tsp2_i2c_rtc = {
* Terastation Pro II specific power off method via UART1-attached
* microcontroller
****************************************************************************/
+struct resource tsp2_micon_res = {
+ .start = UART1_PHYS_BASE,
+ .end = UART1_PHYS_BASE + 0x100,
+ .flags = IORESOURCE_MEM,
+};
-#define UART1_REG(x) (UART1_VIRT_BASE + ((UART_##x) << 2))
-
-static int tsp2_miconread(unsigned char *buf, int count)
-{
- int i;
- int timeout;
-
- for (i = 0; i < count; i++) {
- timeout = 10;
-
- while (!(readl(UART1_REG(LSR)) & UART_LSR_DR)) {
- if (--timeout == 0)
- break;
- udelay(1000);
- }
-
- if (timeout == 0)
- break;
- buf[i] = readl(UART1_REG(RX));
- }
-
- /* return read bytes */
- return i;
-}
-
-static int tsp2_miconwrite(const unsigned char *buf, int count)
-{
- int i = 0;
-
- while (count--) {
- while (!(readl(UART1_REG(LSR)) & UART_LSR_THRE))
- barrier();
- writel(buf[i++], UART1_REG(TX));
- }
-
- return 0;
-}
-
-static int tsp2_miconsend(const unsigned char *data, int count)
-{
- int i;
- unsigned char checksum = 0;
- unsigned char recv_buf[40];
- unsigned char send_buf[40];
- unsigned char correct_ack[3];
- int retry = 2;
-
- /* Generate checksum */
- for (i = 0; i < count; i++)
- checksum -= data[i];
-
- do {
- /* Send data */
- tsp2_miconwrite(data, count);
-
- /* send checksum */
- tsp2_miconwrite(&checksum, 1);
-
- if (tsp2_miconread(recv_buf, sizeof(recv_buf)) <= 3) {
- printk(KERN_ERR ">%s: receive failed.\n", __func__);
-
- /* send preamble to clear the receive buffer */
- memset(&send_buf, 0xff, sizeof(send_buf));
- tsp2_miconwrite(send_buf, sizeof(send_buf));
-
- /* make dummy reads */
- mdelay(100);
- tsp2_miconread(recv_buf, sizeof(recv_buf));
- } else {
- /* Generate expected ack */
- correct_ack[0] = 0x01;
- correct_ack[1] = data[1];
- correct_ack[2] = 0x00;
-
- /* checksum Check */
- if ((recv_buf[0] + recv_buf[1] + recv_buf[2] +
- recv_buf[3]) & 0xFF) {
- printk(KERN_ERR ">%s: Checksum Error : "
- "Received data[%02x, %02x, %02x, %02x]"
- "\n", __func__, recv_buf[0],
- recv_buf[1], recv_buf[2], recv_buf[3]);
- } else {
- /* Check Received Data */
- if (correct_ack[0] == recv_buf[0] &&
- correct_ack[1] == recv_buf[1] &&
- correct_ack[2] == recv_buf[2]) {
- /* Interval for next command */
- mdelay(10);
-
- /* Receive ACK */
- return 0;
- }
- }
- /* Received NAK or illegal Data */
- printk(KERN_ERR ">%s: Error : NAK or Illegal Data "
- "Received\n", __func__);
- }
- } while (retry--);
-
- /* Interval for next command */
- mdelay(10);
+static struct micon_platform_data tsp2_micon_pdata;
- return -1;
-}
-
-static void tsp2_power_off(void)
-{
- const unsigned char watchdogkill[] = {0x01, 0x35, 0x00};
- const unsigned char shutdownwait[] = {0x00, 0x0c};
- const unsigned char poweroff[] = {0x00, 0x06};
- /* 38400 baud divisor */
- const unsigned divisor = ((orion5x_tclk + (8 * 38400)) / (16 * 38400));
-
- pr_info("%s: triggering power-off...\n", __func__);
-
- /* hijack uart1 and reset into sane state (38400,8n1,even parity) */
- writel(0x83, UART1_REG(LCR));
- writel(divisor & 0xff, UART1_REG(DLL));
- writel((divisor >> 8) & 0xff, UART1_REG(DLM));
- writel(0x1b, UART1_REG(LCR));
- writel(0x00, UART1_REG(IER));
- writel(0x07, UART1_REG(FCR));
- writel(0x00, UART1_REG(MCR));
-
- /* Send the commands to shutdown the Terastation Pro II */
- tsp2_miconsend(watchdogkill, sizeof(watchdogkill)) ;
- tsp2_miconsend(shutdownwait, sizeof(shutdownwait)) ;
- tsp2_miconsend(poweroff, sizeof(poweroff));
-}
+static struct platform_device tsp2_micon = {
+ .name = MICON_NAME,
+ .id = -1,
+ .dev = {
+ .platform_data = &tsp2_micon_pdata,
+ },
+ .resource = &tsp2_micon_res,
+ .num_resources = 1,
+};
/*****************************************************************************
* General Setup
@@ -334,6 +222,8 @@ static void __init tsp2_init(void)
TSP2_NOR_BOOT_BASE,
TSP2_NOR_BOOT_SIZE);
platform_device_register(&tsp2_nor_flash);
+ tsp2_micon_pdata.tclk = orion5x_tclk;
+ platform_device_register(&tsp2_micon);
orion5x_ehci0_init();
orion5x_eth_init(&tsp2_eth_data);
@@ -351,9 +241,6 @@ static void __init tsp2_init(void)
if (tsp2_i2c_rtc.irq == 0)
pr_warn("tsp2_init: failed to get RTC IRQ\n");
i2c_register_board_info(0, &tsp2_i2c_rtc, 1);
-
- /* register Terastation Pro II specific power-off method */
- pm_power_off = tsp2_power_off;
}
MACHINE_START(TERASTATION_PRO2, "Buffalo Terastation Pro II/Live")
--
2.9.3
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