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author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 03:02:13 +0400 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-05-23 03:02:13 +0400 |
commit | 5d4e2d08e7fdf7339f84a1c670d296a77e02f881 (patch) | |
tree | 1c419660defa56191091dfdf50fdb57a72009173 /include/linux/platform_data | |
parent | fb2123fad3b499f0898835b19dbb93b18d27ee98 (diff) | |
parent | 94ca629e40eb7e997be21d8065c25e4f3797b03f (diff) | |
download | linux-5d4e2d08e7fdf7339f84a1c670d296a77e02f881.tar.xz |
Merge tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core
Pull driver core updates from Greg Kroah-Hartman:
"Here's the driver core, and other driver subsystems, pull request for
the 3.5-rc1 merge window.
Outside of a few minor driver core changes, we ended up with the
following different subsystem and core changes as well, due to
interdependancies on the driver core:
- hyperv driver updates
- drivers/memory being created and some drivers moved into it
- extcon driver subsystem created out of the old Android staging
switch driver code
- dynamic debug updates
- printk rework, and /dev/kmsg changes
All of this has been tested in the linux-next releases for a few weeks
with no reported problems.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>"
Fix up conflicts in drivers/extcon/extcon-max8997.c where git noticed
that a patch to the deleted drivers/misc/max8997-muic.c driver needs to
be applied to this one.
* tag 'driver-core-3.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (90 commits)
uio_pdrv_genirq: get irq through platform resource if not set otherwise
memory: tegra{20,30}-mc: Remove empty *_remove()
printk() - isolate KERN_CONT users from ordinary complete lines
sysfs: get rid of some lockdep false positives
Drivers: hv: util: Properly handle version negotiations.
Drivers: hv: Get rid of an unnecessary check in vmbus_prep_negotiate_resp()
memory: tegra{20,30}-mc: Use dev_err_ratelimited()
driver core: Add dev_*_ratelimited() family
Driver Core: don't oops with unregistered driver in driver_find_device()
printk() - restore prefix/timestamp printing for multi-newline strings
printk: add stub for prepend_timestamp()
ARM: tegra30: Make MC optional in Kconfig
ARM: tegra20: Make MC optional in Kconfig
ARM: tegra30: MC: Remove unnecessary BUG*()
ARM: tegra20: MC: Remove unnecessary BUG*()
printk: correctly align __log_buf
ARM: tegra30: Add Tegra Memory Controller(MC) driver
ARM: tegra20: Add Tegra Memory Controller(MC) driver
printk() - restore timestamp printing at console output
printk() - do not merge continuation lines of different threads
...
Diffstat (limited to 'include/linux/platform_data')
-rw-r--r-- | include/linux/platform_data/emif_plat.h | 128 |
1 files changed, 128 insertions, 0 deletions
diff --git a/include/linux/platform_data/emif_plat.h b/include/linux/platform_data/emif_plat.h new file mode 100644 index 000000000000..03378ca84061 --- /dev/null +++ b/include/linux/platform_data/emif_plat.h @@ -0,0 +1,128 @@ +/* + * Definitions for TI EMIF device platform data + * + * Copyright (C) 2012 Texas Instruments, Inc. + * + * Aneesh V <aneesh@ti.com> + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + */ +#ifndef __EMIF_PLAT_H +#define __EMIF_PLAT_H + +/* Low power modes - EMIF_PWR_MGMT_CTRL */ +#define EMIF_LP_MODE_DISABLE 0 +#define EMIF_LP_MODE_CLOCK_STOP 1 +#define EMIF_LP_MODE_SELF_REFRESH 2 +#define EMIF_LP_MODE_PWR_DN 4 + +/* Hardware capabilities */ +#define EMIF_HW_CAPS_LL_INTERFACE 0x00000001 + +/* + * EMIF IP Revisions + * EMIF4D - Used in OMAP4 + * EMIF4D5 - Used in OMAP5 + */ +#define EMIF_4D 1 +#define EMIF_4D5 2 + +/* + * PHY types + * ATTILAPHY - Used in OMAP4 + * INTELLIPHY - Used in OMAP5 + */ +#define EMIF_PHY_TYPE_ATTILAPHY 1 +#define EMIF_PHY_TYPE_INTELLIPHY 2 + +/* Custom config requests */ +#define EMIF_CUSTOM_CONFIG_LPMODE 0x00000001 +#define EMIF_CUSTOM_CONFIG_TEMP_ALERT_POLL_INTERVAL 0x00000002 + +#ifndef __ASSEMBLY__ +/** + * struct ddr_device_info - All information about the DDR device except AC + * timing parameters + * @type: Device type (LPDDR2-S4, LPDDR2-S2 etc) + * @density: Device density + * @io_width: Bus width + * @cs1_used: Whether there is a DDR device attached to the second + * chip-select(CS1) of this EMIF instance + * @cal_resistors_per_cs: Whether there is one calibration resistor per + * chip-select or whether it's a single one for both + * @manufacturer: Manufacturer name string + */ +struct ddr_device_info { + u32 type; + u32 density; + u32 io_width; + u32 cs1_used; + u32 cal_resistors_per_cs; + char manufacturer[10]; +}; + +/** + * struct emif_custom_configs - Custom configuration parameters/policies + * passed from the platform layer + * @mask: Mask to indicate which configs are requested + * @lpmode: LPMODE to be used in PWR_MGMT_CTRL register + * @lpmode_timeout_performance: Timeout before LPMODE entry when higher + * performance is desired at the cost of power (typically + * at higher OPPs) + * @lpmode_timeout_power: Timeout before LPMODE entry when better power + * savings is desired and performance is not important + * (typically at lower loads indicated by lower OPPs) + * @lpmode_freq_threshold: The DDR frequency threshold to identify between + * the above two cases: + * timeout = (freq >= lpmode_freq_threshold) ? + * lpmode_timeout_performance : + * lpmode_timeout_power; + * @temp_alert_poll_interval_ms: LPDDR2 MR4 polling interval at nominal + * temperature(in milliseconds). When temperature is high + * polling is done 4 times as frequently. + */ +struct emif_custom_configs { + u32 mask; + u32 lpmode; + u32 lpmode_timeout_performance; + u32 lpmode_timeout_power; + u32 lpmode_freq_threshold; + u32 temp_alert_poll_interval_ms; +}; + +/** + * struct emif_platform_data - Platform data passed on EMIF platform + * device creation. Used by the driver. + * @hw_caps: Hw capabilities of the EMIF IP in the respective SoC + * @device_info: Device info structure containing information such + * as type, bus width, density etc + * @timings: Timings information from device datasheet passed + * as an array of 'struct lpddr2_timings'. Can be NULL + * if if default timings are ok + * @timings_arr_size: Size of the timings array. Depends on the number + * of different frequencies for which timings data + * is provided + * @min_tck: Minimum value of some timing parameters in terms + * of number of cycles. Can be NULL if default values + * are ok + * @custom_configs: Custom configurations requested by SoC or board + * code and the data for them. Can be NULL if default + * configurations done by the driver are ok. See + * documentation for 'struct emif_custom_configs' for + * more details + */ +struct emif_platform_data { + u32 hw_caps; + struct ddr_device_info *device_info; + const struct lpddr2_timings *timings; + u32 timings_arr_size; + const struct lpddr2_min_tck *min_tck; + struct emif_custom_configs *custom_configs; + u32 ip_rev; + u32 phy_type; +}; +#endif /* __ASSEMBLY__ */ + +#endif /* __LINUX_EMIF_H */ |