From: Eddie James <eajames@linux.ibm.com>
To: linux-fsi@lists.ozlabs.org
Cc: linux-kernel@vger.kernel.org, linux-i2c@vger.kernel.org,
linux-spi@vger.kernel.org, broonie@kernel.org,
andi.shyti@kernel.org, joel@jms.id.au, alistair@popple.id.au,
jk@ozlabs.org, andrew@codeconstruct.com.au,
linux-aspeed@lists.ozlabs.org, eajames@linux.ibm.com
Subject: [PATCH v3 14/40] fsi: hub: Use common initialization and link enable
Date: Thu, 16 May 2024 13:18:41 -0500 [thread overview]
Message-ID: <20240516181907.3468796-15-eajames@linux.ibm.com> (raw)
In-Reply-To: <20240516181907.3468796-1-eajames@linux.ibm.com>
Set up an FSI regmap for the hub master to use the new common
master initialization and link enable procedures.
Signed-off-by: Eddie James <eajames@linux.ibm.com>
---
drivers/fsi/fsi-master-hub.c | 142 ++++++-----------------------------
1 file changed, 23 insertions(+), 119 deletions(-)
diff --git a/drivers/fsi/fsi-master-hub.c b/drivers/fsi/fsi-master-hub.c
index eea8649fee74d..91ad6b7728fa2 100644
--- a/drivers/fsi/fsi-master-hub.c
+++ b/drivers/fsi/fsi-master-hub.c
@@ -9,6 +9,7 @@
#include <linux/fsi.h>
#include <linux/module.h>
#include <linux/of.h>
+#include <linux/regmap.h>
#include <linux/slab.h>
#include "fsi-master.h"
@@ -16,8 +17,6 @@
#define FSI_ENGID_HUB_MASTER 0x1c
-#define FSI_LINK_ENABLE_SETUP_TIME 10 /* in mS */
-
/*
* FSI hub master support
*
@@ -78,134 +77,33 @@ static int hub_master_break(struct fsi_master *master, int link)
return hub_master_write(master, link, 0, addr, &cmd, sizeof(cmd));
}
-static int hub_master_link_enable(struct fsi_master *master, int link,
- bool enable)
-{
- struct fsi_master_hub *hub = to_fsi_master_hub(master);
- int idx, bit;
- __be32 reg;
- int rc;
-
- idx = link / 32;
- bit = link % 32;
-
- reg = cpu_to_be32(0x80000000 >> bit);
-
- if (!enable)
- return fsi_device_write(hub->upstream, FSI_MCENP0 + (4 * idx),
- ®, 4);
-
- rc = fsi_device_write(hub->upstream, FSI_MSENP0 + (4 * idx), ®, 4);
- if (rc)
- return rc;
-
- mdelay(FSI_LINK_ENABLE_SETUP_TIME);
-
- return 0;
-}
-
static void hub_master_release(struct device *dev)
{
struct fsi_master_hub *hub = to_fsi_master_hub(to_fsi_master(dev));
+ regmap_exit(hub->master.map);
kfree(hub);
}
-/* mmode encoders */
-static inline u32 fsi_mmode_crs0(u32 x)
-{
- return (x & FSI_MMODE_CRS0MASK) << FSI_MMODE_CRS0SHFT;
-}
-
-static inline u32 fsi_mmode_crs1(u32 x)
-{
- return (x & FSI_MMODE_CRS1MASK) << FSI_MMODE_CRS1SHFT;
-}
-
-static int hub_master_init(struct fsi_master_hub *hub)
-{
- struct fsi_device *dev = hub->upstream;
- __be32 reg;
- int rc;
-
- reg = cpu_to_be32(FSI_MRESP_RST_ALL_MASTER | FSI_MRESP_RST_ALL_LINK
- | FSI_MRESP_RST_MCR | FSI_MRESP_RST_PYE);
- rc = fsi_device_write(dev, FSI_MRESP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- /* Initialize the MFSI (hub master) engine */
- reg = cpu_to_be32(FSI_MRESP_RST_ALL_MASTER | FSI_MRESP_RST_ALL_LINK
- | FSI_MRESP_RST_MCR | FSI_MRESP_RST_PYE);
- rc = fsi_device_write(dev, FSI_MRESP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(FSI_MECTRL_EOAE | FSI_MECTRL_P8_AUTO_TERM);
- rc = fsi_device_write(dev, FSI_MECTRL, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(FSI_MMODE_EIP | FSI_MMODE_ECRC | FSI_MMODE_EPC
- | fsi_mmode_crs0(1) | fsi_mmode_crs1(1)
- | FSI_MMODE_P8_TO_LSB);
- rc = fsi_device_write(dev, FSI_MMODE, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(0xffff0000);
- rc = fsi_device_write(dev, FSI_MDLYR, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(~0);
- rc = fsi_device_write(dev, FSI_MSENP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- /* Leave enabled long enough for master logic to set up */
- mdelay(FSI_LINK_ENABLE_SETUP_TIME);
-
- rc = fsi_device_write(dev, FSI_MCENP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- rc = fsi_device_read(dev, FSI_MAEB, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(FSI_MRESP_RST_ALL_MASTER | FSI_MRESP_RST_ALL_LINK);
- rc = fsi_device_write(dev, FSI_MRESP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- rc = fsi_device_read(dev, FSI_MLEVP0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- /* Reset the master bridge */
- reg = cpu_to_be32(FSI_MRESB_RST_GEN);
- rc = fsi_device_write(dev, FSI_MRESB0, ®, sizeof(reg));
- if (rc)
- return rc;
-
- reg = cpu_to_be32(FSI_MRESB_RST_ERR);
- return fsi_device_write(dev, FSI_MRESB0, ®, sizeof(reg));
-}
-
static int hub_master_probe(struct device *dev)
{
+ struct regmap_config hub_master_regmap_config;
struct fsi_device *fsi_dev = to_fsi_dev(dev);
struct fsi_master_hub *hub;
+ struct regmap *map;
uint32_t reg, links;
- __be32 __reg;
int rc;
- rc = fsi_device_read(fsi_dev, FSI_MVER, &__reg, sizeof(__reg));
+ fsi_master_regmap_config(&hub_master_regmap_config);
+ hub_master_regmap_config.reg_base = fsi_dev->addr;
+ map = regmap_init_fsi(fsi_dev, &hub_master_regmap_config);
+ if (IS_ERR(map))
+ return PTR_ERR(map);
+
+ rc = regmap_read(map, FSI_MVER, ®);
if (rc)
- return rc;
+ goto err_regmap;
- reg = be32_to_cpu(__reg);
links = (reg >> 8) & 0xff;
dev_dbg(dev, "hub version %08x (%d links)\n", reg, links);
@@ -213,7 +111,7 @@ static int hub_master_probe(struct device *dev)
FSI_HUB_LINK_SIZE * links);
if (rc) {
dev_err(dev, "can't claim slave address range for links");
- return rc;
+ goto err_regmap;
}
hub = kzalloc(sizeof(*hub), GFP_KERNEL);
@@ -229,22 +127,24 @@ static int hub_master_probe(struct device *dev)
hub->master.dev.parent = dev;
hub->master.dev.release = hub_master_release;
hub->master.dev.of_node = of_node_get(dev_of_node(dev));
+ hub->master.map = map;
hub->master.idx = fsi_dev->slave->link + 1;
hub->master.n_links = links;
- hub->master.flags = FSI_MASTER_FLAG_NO_BREAK_SID;
+ hub->master.flags = FSI_MASTER_FLAG_NO_BREAK_SID | FSI_MASTER_FLAG_INTERRUPT;
hub->master.read = hub_master_read;
hub->master.write = hub_master_write;
hub->master.send_break = hub_master_break;
- hub->master.link_enable = hub_master_link_enable;
dev_set_drvdata(dev, hub);
- hub_master_init(hub);
+ rc = fsi_master_init(&hub->master, fsi_dev->slave->master->clock_frequency);
+ if (rc)
+ goto err_free;
rc = fsi_master_register(&hub->master);
if (rc)
- goto err_release;
+ goto err_free;
/* At this point, fsi_master_register performs the device_initialize(),
* and holds the sole reference on master.dev. This means the device
@@ -256,9 +156,13 @@ static int hub_master_probe(struct device *dev)
get_device(&hub->master.dev);
return 0;
+err_free:
+ kfree(hub);
err_release:
fsi_slave_release_range(fsi_dev->slave, FSI_HUB_LINK_OFFSET,
FSI_HUB_LINK_SIZE * links);
+err_regmap:
+ regmap_exit(map);
return rc;
}
--
2.39.3
next prev parent reply other threads:[~2024-05-16 18:19 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-16 18:18 [PATCH v3 00/40] fsi: Add interrupt support Eddie James
2024-05-16 18:18 ` [PATCH v3 01/40] fsi: hub: Set master index to link number plus one Eddie James
2024-05-16 18:18 ` [PATCH v3 02/40] fsi: Move slave definitions to fsi-slave.h Eddie James
2024-05-16 18:18 ` [PATCH v3 03/40] fsi: Fix slave addressing after break command Eddie James
2024-05-16 18:18 ` [PATCH v3 04/40] fsi: Use a defined value for default echo delay Eddie James
2024-05-16 18:18 ` [PATCH v3 05/40] fsi: Calculate local bus clock frequency Eddie James
2024-05-16 18:18 ` [PATCH v3 06/40] fsi: core: Improve master read/write/error traces Eddie James
2024-05-16 18:18 ` [PATCH v3 07/40] fsi: core: Add slave error trace Eddie James
2024-05-16 18:18 ` [PATCH v3 08/40] fsi: core: Reset errors instead of clearing interrupts Eddie James
2024-05-16 18:18 ` [PATCH v3 09/40] fsi: aspeed: Add AST2700 support Eddie James
2024-05-16 18:18 ` [PATCH v3 10/40] fsi: core: Add slave spinlock Eddie James
2024-05-16 18:18 ` [PATCH v3 11/40] fsi: core: Allow cfam device type aliases Eddie James
2024-05-16 18:18 ` [PATCH v3 12/40] fsi: core: Add common regmap master functions Eddie James
2024-05-16 18:18 ` [PATCH v3 13/40] fsi: core: Disable relative addressing during scan Eddie James
2024-05-16 18:18 ` Eddie James [this message]
2024-05-16 18:18 ` [PATCH v3 15/40] fsi: aspeed: Use common initialization and link enable Eddie James
2024-05-16 18:18 ` [PATCH v3 16/40] fsi: aspeed: Remove cfam reset sysfs file in error path and remove Eddie James
2024-05-16 18:18 ` [PATCH v3 17/40] fsi: aspeed: Refactor trace functions Eddie James
2024-05-16 18:18 ` [PATCH v3 18/40] fsi: aspeed: Don't clear all IRQs during OPB transfers Eddie James
2024-05-16 18:18 ` [PATCH v3 19/40] fsi: aspeed: Only read result register for successful read Eddie James
2024-05-16 18:18 ` [PATCH v3 20/40] fsi: aspeed: Switch to spinlock Eddie James
2024-05-16 18:18 ` [PATCH v3 21/40] fsi: aspeed: Disable relative addressing and IPOLL for cfam reset Eddie James
2024-05-16 18:18 ` [PATCH v3 22/40] fsi: aspeed: Use common master error handler Eddie James
2024-05-16 18:18 ` [PATCH v3 23/40] fsi: core: Add interrupt support Eddie James
2024-05-17 20:41 ` kernel test robot
2024-05-16 18:18 ` [PATCH v3 24/40] fsi: aspeed: " Eddie James
2024-05-16 18:18 ` [PATCH v3 25/40] fsi: hub: " Eddie James
2024-05-16 18:18 ` [PATCH v3 26/40] i2c: fsi: Calculate clock divider from local bus frequency Eddie James
2024-05-16 18:18 ` [PATCH v3 27/40] i2c: fsi: Improve formatting Eddie James
2024-05-16 18:18 ` [PATCH v3 28/40] i2c: fsi: Change fsi_i2c_write_reg to accept data instead of a pointer Eddie James
2024-05-16 18:18 ` [PATCH v3 29/40] i2c: fsi: Remove list structure of ports Eddie James
2024-05-16 18:18 ` [PATCH v3 30/40] i2c: fsi: Define a function to check status error bits Eddie James
2024-05-16 18:18 ` [PATCH v3 31/40] i2c: fsi: Add boolean for skip stop command on abort Eddie James
2024-05-16 18:18 ` [PATCH v3 32/40] i2c: fsi: Add interrupt support Eddie James
2024-05-16 18:19 ` [PATCH v3 33/40] fsi: hub master: Reset hub master after errors Eddie James
2024-05-16 18:19 ` [PATCH v3 34/40] fsi: core: Add master register read-only sysfs Eddie James
2024-05-16 18:19 ` [PATCH v3 35/40] fsi: core: Add slave " Eddie James
2024-05-16 18:19 ` [PATCH v3 36/40] fsi: i2cr: Adjust virtual CFAM ID to match Odyssey chip Eddie James
2024-05-16 18:19 ` [PATCH v3 37/40] fsi: core: Add different types of CFAM Eddie James
2024-05-17 12:38 ` kernel test robot
2024-05-17 15:49 ` kernel test robot
2024-05-18 1:03 ` kernel test robot
2024-05-16 18:19 ` [PATCH v3 38/40] spi: fsi: Calculate clock divider from local bus frequency Eddie James
2024-05-16 18:24 ` Mark Brown
2024-05-16 18:19 ` [PATCH v3 39/40] ARM: dts: aspeed: P10 and tacoma: Set FSI clock frequency Eddie James
2024-05-16 18:19 ` [PATCH v3 40/40] ARM: dts: aspeed: P10: Bump SPI max frequencies Eddie James
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