{"id":816072,"url":"http://patchwork.ozlabs.org/api/patches/816072/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20170920070135.31379-6-clg@kaod.org/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":"","list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20170920070135.31379-6-clg@kaod.org>","list_archive_url":null,"date":"2017-09-20T07:01:34","name":"[v2,5/6] misc: add pca9552 LED blinker model","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"db25177ec2ece8e8adea1cfb57f7b7546ee071c5","submitter":{"id":68548,"url":"http://patchwork.ozlabs.org/api/people/68548/?format=json","name":"Cédric Le Goater","email":"clg@kaod.org"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20170920070135.31379-6-clg@kaod.org/mbox/","series":[{"id":4038,"url":"http://patchwork.ozlabs.org/api/series/4038/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=4038","date":"2017-09-20T07:01:29","name":"aspeed: add a witherspoon-bmc machine","version":2,"mbox":"http://patchwork.ozlabs.org/series/4038/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/816072/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/816072/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@bilbo.ozlabs.org","Authentication-Results":"ozlabs.org;\n\tspf=pass (mailfrom) smtp.mailfrom=nongnu.org\n\t(client-ip=2001:4830:134:3::11; helo=lists.gnu.org;\n\tenvelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n\treceiver=)","Received":["from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11])\n\t(using TLSv1 with cipher AES256-SHA (256/256 bits))\n\t(No client certificate requested)\n\tby ozlabs.org (Postfix) with ESMTPS id 3xxrLR1RJDz9s7h\n\tfor ;\n\tWed, 20 Sep 2017 17:03:27 +1000 (AEST)","from localhost ([::1]:47111 helo=lists.gnu.org)\n\tby lists.gnu.org with esmtp (Exim 4.71) (envelope-from\n\t)\n\tid 1duZ2b-0005Dr-5C\n\tfor incoming@patchwork.ozlabs.org; Wed, 20 Sep 2017 03:03:25 -0400","from eggs.gnu.org ([2001:4830:134:3::10]:48044)\n\tby lists.gnu.org with esmtp (Exim 4.71)\n\t(envelope-from ) id 1duZ1r-0005Bp-AD\n\tfor qemu-devel@nongnu.org; Wed, 20 Sep 2017 03:02:41 -0400","from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71)\n\t(envelope-from ) id 1duZ1n-0000Rl-9E\n\tfor qemu-devel@nongnu.org; Wed, 20 Sep 2017 03:02:39 -0400","from 8.mo2.mail-out.ovh.net ([188.165.52.147]:53861)\n\tby eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32)\n\t(Exim 4.71) (envelope-from ) id 1duZ1n-0000Qn-0V\n\tfor qemu-devel@nongnu.org; Wed, 20 Sep 2017 03:02:35 -0400","from player157.ha.ovh.net (b9.ovh.net [213.186.33.59])\n\tby mo2.mail-out.ovh.net (Postfix) with ESMTP id 9F8FDAC939\n\tfor ; Wed, 20 Sep 2017 09:02:33 +0200 (CEST)","from zorba.kaod.org.com (LFbn-1-2231-173.w90-76.abo.wanadoo.fr\n\t[90.76.52.173]) (Authenticated sender: clg@kaod.org)\n\tby player157.ha.ovh.net (Postfix) with ESMTPSA id 6AD4E50008E;\n\tWed, 20 Sep 2017 09:02:26 +0200 (CEST)"],"From":"=?utf-8?q?C=C3=A9dric_Le_Goater?= ","To":"Peter Maydell ","Date":"Wed, 20 Sep 2017 09:01:34 +0200","Message-Id":"<20170920070135.31379-6-clg@kaod.org>","X-Mailer":"git-send-email 2.13.5","In-Reply-To":"<20170920070135.31379-1-clg@kaod.org>","References":"<20170920070135.31379-1-clg@kaod.org>","MIME-Version":"1.0","Content-Type":"text/plain; charset=UTF-8","X-Ovh-Tracer-Id":"1335598765754321681","X-VR-SPAMSTATE":"OK","X-VR-SPAMSCORE":"-100","X-VR-SPAMCAUSE":"gggruggvucftvghtrhhoucdtuddrfeelledrheekgdduudejucetufdoteggodetrfdotffvucfrrhhofhhilhgvmecuqfggjfdpvefjgfevmfevgfenuceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddm","Content-Transfer-Encoding":"quoted-printable","X-detected-operating-system":"by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic]\n\t[fuzzy]","X-Received-From":"188.165.52.147","Subject":"[Qemu-devel] [PATCH v2 5/6] misc: add pca9552 LED blinker model","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.21","Precedence":"list","List-Id":"","List-Unsubscribe":",\n\t","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n\t","Cc":"Andrew Jeffery , =?utf-8?q?Philippe_Mathieu-Daud?=\n\t=?utf-8?b?w6k=?= ,\n\tqemu-devel@nongnu.org, qemu-arm@nongnu.org, =?utf-8?q?C=C3=A9dric_Le_?=\n\t=?utf-8?q?Goater?= , \tJoel Stanley ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"\"Qemu-devel\"\n\t"},"content":"Specs are available here :\n\n https://www.nxp.com/docs/en/data-sheet/PCA9552.pdf\n\nThis is a simple model supporting the basic registers for led and GPIO\nmode. The device also supports two blinking rates but not the model\nyet.\n\nSigned-off-by: Cédric Le Goater \n---\n default-configs/arm-softmmu.mak | 1 +\n hw/misc/Makefile.objs | 1 +\n hw/misc/pca9552.c | 212 ++++++++++++++++++++++++++++++++++++++++\n include/hw/misc/pca9552.h | 32 ++++++\n 4 files changed, 246 insertions(+)\n create mode 100644 hw/misc/pca9552.c\n create mode 100644 include/hw/misc/pca9552.h","diff":"diff --git a/default-configs/arm-softmmu.mak b/default-configs/arm-softmmu.mak\nindex bbdd3c1d8b7f..17b8fc323f27 100644\n--- a/default-configs/arm-softmmu.mak\n+++ b/default-configs/arm-softmmu.mak\n@@ -16,6 +16,7 @@ CONFIG_TSC2005=y\n CONFIG_LM832X=y\n CONFIG_TMP105=y\n CONFIG_TMP421=y\n+CONFIG_PCA9552=y\n CONFIG_STELLARIS=y\n CONFIG_STELLARIS_INPUT=y\n CONFIG_STELLARIS_ENET=y\ndiff --git a/hw/misc/Makefile.objs b/hw/misc/Makefile.objs\nindex 29fb922cefc6..33ba1d6642f9 100644\n--- a/hw/misc/Makefile.objs\n+++ b/hw/misc/Makefile.objs\n@@ -7,6 +7,7 @@ common-obj-$(CONFIG_SGA) += sga.o\n common-obj-$(CONFIG_ISA_TESTDEV) += pc-testdev.o\n common-obj-$(CONFIG_PCI_TESTDEV) += pci-testdev.o\n common-obj-$(CONFIG_EDU) += edu.o\n+common-obj-$(CONFIG_PCA9552) += pca9552.o\n \n common-obj-y += unimp.o\n \ndiff --git a/hw/misc/pca9552.c b/hw/misc/pca9552.c\nnew file mode 100644\nindex 000000000000..22460f4c14fe\n--- /dev/null\n+++ b/hw/misc/pca9552.c\n@@ -0,0 +1,212 @@\n+/*\n+ * PCA9552 I2C LED blinker\n+ *\n+ * Copyright (c) 2017, IBM Corporation.\n+ *\n+ * This work is licensed under the terms of the GNU GPL, version 2 or\n+ * later. See the COPYING file in the top-level directory.\n+ */\n+\n+#include \"qemu/osdep.h\"\n+#include \"qemu/log.h\"\n+#include \"hw/hw.h\"\n+#include \"hw/misc/pca9552.h\"\n+\n+#define PCA9552_INPUT0 0 /* read only input register 0 */\n+#define PCA9552_INPUT1 1 /* read only input register 1 */\n+#define PCA9552_PSC0 2 /* read/write frequency prescaler 0 */\n+#define PCA9552_PWM0 3 /* read/write PWM register 0 */\n+#define PCA9552_PSC1 4 /* read/write frequency prescaler 1 */\n+#define PCA9552_PWM1 5 /* read/write PWM register 1 */\n+#define PCA9552_LS0 6 /* read/write LED0 to LED3 selector */\n+#define PCA9552_LS1 7 /* read/write LED4 to LED7 selector */\n+#define PCA9552_LS2 8 /* read/write LED8 to LED11 selector */\n+#define PCA9552_LS3 9 /* read/write LED12 to LED15 selector */\n+\n+#define PCA9552_LED_ON 0x0\n+#define PCA9552_LED_OFF 0x1\n+#define PCA9552_LED_PWM0 0x2\n+#define PCA9552_LED_PWM1 0x3\n+\n+static uint8_t pca9552_pin_get_config(PCA9552State *s, int pin)\n+{\n+ uint8_t reg = PCA9552_LS0 + (pin / 4);\n+ uint8_t shift = (pin % 4) << 1;\n+\n+ return (s->regs[reg] >> shift) & 0x3;\n+}\n+\n+static void pca9552_update_pin_input(PCA9552State *s)\n+{\n+ int i;\n+\n+ for (i = 0; i < 16; i++) {\n+ uint8_t input_reg = PCA9552_INPUT0 + (i / 8);\n+ uint8_t input_shift = (i % 8);\n+ uint8_t config = pca9552_pin_get_config(s, i);\n+\n+ switch (config) {\n+ case PCA9552_LED_ON:\n+ s->regs[input_reg] |= 1 << input_shift;\n+ break;\n+ case PCA9552_LED_OFF:\n+ s->regs[input_reg] &= ~(1 << input_shift);\n+ break;\n+ case PCA9552_LED_PWM0:\n+ case PCA9552_LED_PWM1:\n+ /* ??? */\n+ default:\n+ break;\n+ }\n+ }\n+}\n+\n+static void pca9552_read(PCA9552State *s)\n+{\n+ uint8_t reg = s->pointer & 0xf;\n+\n+ s->len = 0;\n+\n+ switch (reg) {\n+ case PCA9552_INPUT0:\n+ case PCA9552_INPUT1:\n+ case PCA9552_PSC0:\n+ case PCA9552_PWM0:\n+ case PCA9552_PSC1:\n+ case PCA9552_PWM1:\n+ case PCA9552_LS0:\n+ case PCA9552_LS1:\n+ case PCA9552_LS2:\n+ case PCA9552_LS3:\n+ s->buf[s->len++] = s->regs[reg];\n+ break;\n+ default:\n+ qemu_log_mask(LOG_GUEST_ERROR, \"%s: unexpected read to register %d\\n\",\n+ __func__, reg);\n+ }\n+}\n+\n+static void pca9552_write(PCA9552State *s)\n+{\n+ uint8_t reg = s->pointer & 0xf;\n+\n+ switch (reg) {\n+ case PCA9552_PSC0:\n+ case PCA9552_PWM0:\n+ case PCA9552_PSC1:\n+ case PCA9552_PWM1:\n+ s->regs[reg] = s->buf[0];\n+ break;\n+\n+ case PCA9552_LS0:\n+ case PCA9552_LS1:\n+ case PCA9552_LS2:\n+ case PCA9552_LS3:\n+ s->regs[reg] = s->buf[0];\n+ pca9552_update_pin_input(s);\n+ break;\n+\n+ case PCA9552_INPUT0:\n+ case PCA9552_INPUT1:\n+ default:\n+ qemu_log_mask(LOG_GUEST_ERROR, \"%s: unexpected write to register %d\\n\",\n+ __func__, reg);\n+ }\n+}\n+\n+static int pca9552_recv(I2CSlave *i2c)\n+{\n+ PCA9552State *s = PCA9552(i2c);\n+\n+ if (s->len < sizeof(s->buf)) {\n+ return s->buf[s->len++];\n+ } else {\n+ return 0xff;\n+ }\n+}\n+\n+static int pca9552_send(I2CSlave *i2c, uint8_t data)\n+{\n+ PCA9552State *s = PCA9552(i2c);\n+\n+ if (s->len == 0) {\n+ s->pointer = data;\n+ s->len++;\n+ } else {\n+ if (s->len <= sizeof(s->buf)) {\n+ s->buf[s->len - 1] = data;\n+ }\n+ s->len++;\n+ pca9552_write(s);\n+ }\n+\n+ return 0;\n+}\n+\n+static int pca9552_event(I2CSlave *i2c, enum i2c_event event)\n+{\n+ PCA9552State *s = PCA9552(i2c);\n+\n+ if (event == I2C_START_RECV) {\n+ pca9552_read(s);\n+ }\n+\n+ s->len = 0;\n+ return 0;\n+}\n+\n+static const VMStateDescription pca9552_vmstate = {\n+ .name = \"PCA9552\",\n+ .version_id = 0,\n+ .minimum_version_id = 0,\n+ .fields = (VMStateField[]) {\n+ VMSTATE_UINT8(len, PCA9552State),\n+ VMSTATE_UINT8(pointer, PCA9552State),\n+ VMSTATE_UINT8_ARRAY(buf, PCA9552State, 1),\n+ VMSTATE_UINT8_ARRAY(regs, PCA9552State, PCA9552_NR_REGS),\n+ VMSTATE_I2C_SLAVE(i2c, PCA9552State),\n+ VMSTATE_END_OF_LIST()\n+ }\n+};\n+\n+static void pca9552_reset(DeviceState *dev)\n+{\n+ PCA9552State *s = PCA9552(dev);\n+\n+ s->regs[PCA9552_PSC0] = 0xFF;\n+ s->regs[PCA9552_PWM0] = 0x80;\n+ s->regs[PCA9552_PSC1] = 0xFF;\n+ s->regs[PCA9552_PWM1] = 0x80;\n+ s->regs[PCA9552_LS0] = 0x55; /* all OFF */\n+ s->regs[PCA9552_LS1] = 0x55;\n+ s->regs[PCA9552_LS2] = 0x55;\n+ s->regs[PCA9552_LS3] = 0x55;\n+\n+ pca9552_update_pin_input(s);\n+}\n+\n+static void pca9552_class_init(ObjectClass *klass, void *data)\n+{\n+ DeviceClass *dc = DEVICE_CLASS(klass);\n+ I2CSlaveClass *k = I2C_SLAVE_CLASS(klass);\n+\n+ k->event = pca9552_event;\n+ k->recv = pca9552_recv;\n+ k->send = pca9552_send;\n+ dc->reset = pca9552_reset;\n+ dc->vmsd = &pca9552_vmstate;\n+}\n+\n+static const TypeInfo pca9552_info = {\n+ .name = TYPE_PCA9552,\n+ .parent = TYPE_I2C_SLAVE,\n+ .instance_size = sizeof(PCA9552State),\n+ .class_init = pca9552_class_init,\n+};\n+\n+static void pca9552_register_types(void)\n+{\n+ type_register_static(&pca9552_info);\n+}\n+\n+type_init(pca9552_register_types)\ndiff --git a/include/hw/misc/pca9552.h b/include/hw/misc/pca9552.h\nnew file mode 100644\nindex 000000000000..875467725526\n--- /dev/null\n+++ b/include/hw/misc/pca9552.h\n@@ -0,0 +1,32 @@\n+/*\n+ * PCA9552 I2C LED blinker\n+ *\n+ * Copyright (c) 2017, IBM Corporation.\n+ *\n+ * This work is licensed under the terms of the GNU GPL, version 2 or\n+ * later. See the COPYING file in the top-level directory.\n+ */\n+#ifndef PCA9552_H\n+#define PCA9552_H\n+\n+#include \"hw/i2c/i2c.h\"\n+\n+#define TYPE_PCA9552 \"pca9552\"\n+#define PCA9552(obj) OBJECT_CHECK(PCA9552State, (obj), TYPE_PCA9552)\n+\n+\n+#define PCA9552_NR_REGS 10\n+\n+typedef struct PCA9552State {\n+ /*< private >*/\n+ I2CSlave i2c;\n+ /*< public >*/\n+\n+ uint8_t len;\n+ uint8_t pointer;\n+ uint8_t buf[1]; /* just to remember how to handle a larger buffer */\n+\n+ uint8_t regs[PCA9552_NR_REGS];\n+} PCA9552State;\n+\n+#endif\n","prefixes":["v2","5/6"]}