From: Peter Delevoryas <peter@pjd.dev>
Cc: peter@pjd.dev, clg@kaod.org, peter.maydell@linaro.org,
andrew@aj.id.au, joel@jms.id.au, hskinnemoen@google.com,
kfting@nuvoton.com, qemu-arm@nongnu.org, qemu-devel@nongnu.org,
philmd@linaro.org
Subject: [PATCH v3 1/5] hw/arm: Extract at24c_eeprom_init helper from Aspeed and Nuvoton boards
Date: Tue, 17 Jan 2023 15:24:23 -0800 [thread overview]
Message-ID: <20230117232427.74496-2-peter@pjd.dev> (raw)
In-Reply-To: <20230117232427.74496-1-peter@pjd.dev>
This helper is useful in board initialization because lets users initialize and
realize an EEPROM on an I2C bus with a single function call.
Signed-off-by: Peter Delevoryas <peter@pjd.dev>
Reviewed-by: Cédric Le Goater <clg@kaod.org>
---
hw/arm/aspeed.c | 10 +---------
hw/arm/npcm7xx_boards.c | 20 +++++---------------
hw/nvram/eeprom_at24c.c | 12 ++++++++++++
include/hw/nvram/eeprom_at24c.h | 23 +++++++++++++++++++++++
4 files changed, 41 insertions(+), 24 deletions(-)
create mode 100644 include/hw/nvram/eeprom_at24c.h
diff --git a/hw/arm/aspeed.c b/hw/arm/aspeed.c
index 55f114ef729f..1f9799d4321e 100644
--- a/hw/arm/aspeed.c
+++ b/hw/arm/aspeed.c
@@ -17,6 +17,7 @@
#include "hw/i2c/i2c_mux_pca954x.h"
#include "hw/i2c/smbus_eeprom.h"
#include "hw/misc/pca9552.h"
+#include "hw/nvram/eeprom_at24c.h"
#include "hw/sensor/tmp105.h"
#include "hw/misc/led.h"
#include "hw/qdev-properties.h"
@@ -429,15 +430,6 @@ static void aspeed_machine_init(MachineState *machine)
arm_load_kernel(ARM_CPU(first_cpu), machine, &aspeed_board_binfo);
}
-static void at24c_eeprom_init(I2CBus *bus, uint8_t addr, uint32_t rsize)
-{
- I2CSlave *i2c_dev = i2c_slave_new("at24c-eeprom", addr);
- DeviceState *dev = DEVICE(i2c_dev);
-
- qdev_prop_set_uint32(dev, "rom-size", rsize);
- i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort);
-}
-
static void palmetto_bmc_i2c_init(AspeedMachineState *bmc)
{
AspeedSoCState *soc = &bmc->soc;
diff --git a/hw/arm/npcm7xx_boards.c b/hw/arm/npcm7xx_boards.c
index 6bc6f5d2fe29..9b31207a06e9 100644
--- a/hw/arm/npcm7xx_boards.c
+++ b/hw/arm/npcm7xx_boards.c
@@ -21,6 +21,7 @@
#include "hw/i2c/i2c_mux_pca954x.h"
#include "hw/i2c/smbus_eeprom.h"
#include "hw/loader.h"
+#include "hw/nvram/eeprom_at24c.h"
#include "hw/qdev-core.h"
#include "hw/qdev-properties.h"
#include "qapi/error.h"
@@ -140,17 +141,6 @@ static I2CBus *npcm7xx_i2c_get_bus(NPCM7xxState *soc, uint32_t num)
return I2C_BUS(qdev_get_child_bus(DEVICE(&soc->smbus[num]), "i2c-bus"));
}
-static void at24c_eeprom_init(NPCM7xxState *soc, int bus, uint8_t addr,
- uint32_t rsize)
-{
- I2CBus *i2c_bus = npcm7xx_i2c_get_bus(soc, bus);
- I2CSlave *i2c_dev = i2c_slave_new("at24c-eeprom", addr);
- DeviceState *dev = DEVICE(i2c_dev);
-
- qdev_prop_set_uint32(dev, "rom-size", rsize);
- i2c_slave_realize_and_unref(i2c_dev, i2c_bus, &error_abort);
-}
-
static void npcm7xx_init_pwm_splitter(NPCM7xxMachine *machine,
NPCM7xxState *soc, const int *fan_counts)
{
@@ -253,8 +243,8 @@ static void quanta_gsj_i2c_init(NPCM7xxState *soc)
i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 3), "tmp105", 0x5c);
i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 4), "tmp105", 0x5c);
- at24c_eeprom_init(soc, 9, 0x55, 8192);
- at24c_eeprom_init(soc, 10, 0x55, 8192);
+ at24c_eeprom_init(npcm7xx_i2c_get_bus(soc, 9), 0x55, 8192);
+ at24c_eeprom_init(npcm7xx_i2c_get_bus(soc, 10), 0x55, 8192);
/*
* i2c-11:
@@ -360,7 +350,7 @@ static void kudo_bmc_i2c_init(NPCM7xxState *soc)
i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 4), TYPE_PCA9548, 0x77);
- at24c_eeprom_init(soc, 4, 0x50, 8192); /* mbfru */
+ at24c_eeprom_init(npcm7xx_i2c_get_bus(soc, 4), 0x50, 8192); /* mbfru */
i2c_mux = i2c_slave_create_simple(npcm7xx_i2c_get_bus(soc, 13),
TYPE_PCA9548, 0x77);
@@ -371,7 +361,7 @@ static void kudo_bmc_i2c_init(NPCM7xxState *soc)
i2c_slave_create_simple(pca954x_i2c_get_bus(i2c_mux, 4), "tmp105", 0x48);
i2c_slave_create_simple(pca954x_i2c_get_bus(i2c_mux, 5), "tmp105", 0x49);
- at24c_eeprom_init(soc, 14, 0x55, 8192); /* bmcfru */
+ at24c_eeprom_init(npcm7xx_i2c_get_bus(soc, 14), 0x55, 8192); /* bmcfru */
/* TODO: Add remaining i2c devices. */
}
diff --git a/hw/nvram/eeprom_at24c.c b/hw/nvram/eeprom_at24c.c
index 2d4d8b952f38..98857e3626b9 100644
--- a/hw/nvram/eeprom_at24c.c
+++ b/hw/nvram/eeprom_at24c.c
@@ -12,6 +12,7 @@
#include "qapi/error.h"
#include "qemu/module.h"
#include "hw/i2c/i2c.h"
+#include "hw/nvram/eeprom_at24c.h"
#include "hw/qdev-properties.h"
#include "hw/qdev-properties-system.h"
#include "sysemu/block-backend.h"
@@ -128,6 +129,17 @@ int at24c_eeprom_send(I2CSlave *s, uint8_t data)
return 0;
}
+I2CSlave *at24c_eeprom_init(I2CBus *bus, uint8_t address, uint32_t rom_size)
+{
+ I2CSlave *i2c_dev = i2c_slave_new(TYPE_AT24C_EE, address);
+ DeviceState *dev = DEVICE(i2c_dev);
+
+ qdev_prop_set_uint32(dev, "rom-size", rom_size);
+ i2c_slave_realize_and_unref(i2c_dev, bus, &error_abort);
+
+ return i2c_dev;
+}
+
static void at24c_eeprom_realize(DeviceState *dev, Error **errp)
{
EEPROMState *ee = AT24C_EE(dev);
diff --git a/include/hw/nvram/eeprom_at24c.h b/include/hw/nvram/eeprom_at24c.h
new file mode 100644
index 000000000000..196db309d451
--- /dev/null
+++ b/include/hw/nvram/eeprom_at24c.h
@@ -0,0 +1,23 @@
+/*
+ * Copyright (c) Meta Platforms, Inc. and affiliates.
+ *
+ * SPDX-License-Identifier: GPL-2.0-only
+ */
+
+#ifndef EEPROM_AT24C_H
+#define EEPROM_AT24C_H
+
+#include "hw/i2c/i2c.h"
+
+/*
+ * Create and realize an AT24C EEPROM device on the heap.
+ * @bus: I2C bus to put it on
+ * @address: I2C address of the EEPROM slave when put on a bus
+ * @rom_size: size of the EEPROM
+ *
+ * Create the device state structure, initialize it, put it on the specified
+ * @bus, and drop the reference to it (the device is realized).
+ */
+I2CSlave *at24c_eeprom_init(I2CBus *bus, uint8_t address, uint32_t rom_size);
+
+#endif
--
2.39.0
next prev parent reply other threads:[~2023-01-17 23:25 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-01-17 23:24 [PATCH v3 0/5] hw/nvram/eeprom_at24c: Cleanup + FRUID EEPROM init example Peter Delevoryas
2023-01-17 23:24 ` Peter Delevoryas [this message]
2023-01-18 2:16 ` [PATCH v3 1/5] hw/arm: Extract at24c_eeprom_init helper from Aspeed and Nuvoton boards Joel Stanley
2023-01-17 23:24 ` [PATCH v3 2/5] hw/arm/aspeed: Replace aspeed_eeprom_init with at24c_eeprom_init Peter Delevoryas
2023-01-18 2:16 ` Joel Stanley
2023-01-17 23:24 ` [PATCH v3 3/5] hw/nvram/eeprom_at24c: Add init_rom field and at24c_eeprom_init_rom helper Peter Delevoryas
2023-01-18 2:22 ` Joel Stanley
2023-01-18 2:30 ` Peter Delevoryas
2023-01-17 23:24 ` [PATCH v3 4/5] hw/arm/aspeed: Add aspeed_eeprom.c Peter Delevoryas
2023-01-18 2:25 ` Joel Stanley
2023-01-17 23:24 ` [PATCH v3 5/5] hw/nvram/eeprom_at24c: Make reset behavior more like hardware Peter Delevoryas
2023-01-18 2:25 ` Joel Stanley
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20230117232427.74496-2-peter@pjd.dev \
--to=peter@pjd.dev \
--cc=andrew@aj.id.au \
--cc=clg@kaod.org \
--cc=hskinnemoen@google.com \
--cc=joel@jms.id.au \
--cc=kfting@nuvoton.com \
--cc=peter.maydell@linaro.org \
--cc=philmd@linaro.org \
--cc=qemu-arm@nongnu.org \
--cc=qemu-devel@nongnu.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).