diff options
Diffstat (limited to 'debian/patches/features/all/drivers-media-dvb-usb-af9005-request_firmware.patch')
| -rw-r--r-- | debian/patches/features/all/drivers-media-dvb-usb-af9005-request_firmware.patch | 149 |
1 files changed, 149 insertions, 0 deletions
diff --git a/debian/patches/features/all/drivers-media-dvb-usb-af9005-request_firmware.patch b/debian/patches/features/all/drivers-media-dvb-usb-af9005-request_firmware.patch new file mode 100644 index 000000000..a24ba17ef --- /dev/null +++ b/debian/patches/features/all/drivers-media-dvb-usb-af9005-request_firmware.patch @@ -0,0 +1,149 @@ +From: Ben Hutchings <ben@decadent.org.uk> +Date: Mon, 24 Aug 2009 23:19:58 +0100 +Subject: af9005: Use request_firmware() to load register init script +Forwarded: no + +Read the register init script from the Windows driver. This is sick +but should avoid the potential copyright infringement in distributing +a version of the script which is directly derived from the driver. +--- + drivers/media/dvb/dvb-usb/Kconfig | 2 +- + drivers/media/dvb/dvb-usb/af9005-fe.c | 66 ++++++++++++++++++++++++++------ + 2 files changed, 54 insertions(+), 14 deletions(-) + +Index: debian-kernel/drivers/media/usb/dvb-usb/Kconfig +=================================================================== +--- debian-kernel.orig/drivers/media/usb/dvb-usb/Kconfig ++++ debian-kernel/drivers/media/usb/dvb-usb/Kconfig +@@ -260,10 +260,10 @@ config DVB_USB_OPERA1 + + config DVB_USB_AF9005 + tristate "Afatech AF9005 DVB-T USB1.1 support" +- depends on BROKEN + depends on DVB_USB + select MEDIA_TUNER_MT2060 if MEDIA_SUBDRV_AUTOSELECT + select MEDIA_TUNER_QT1010 if MEDIA_SUBDRV_AUTOSELECT ++ select FW_LOADER + help + Say Y here to support the Afatech AF9005 based DVB-T USB1.1 receiver + and the TerraTec Cinergy T USB XE (Rev.1) +Index: debian-kernel/drivers/media/usb/dvb-usb/af9005-fe.c +=================================================================== +--- debian-kernel.orig/drivers/media/usb/dvb-usb/af9005-fe.c ++++ debian-kernel/drivers/media/usb/dvb-usb/af9005-fe.c +@@ -9,10 +9,26 @@ + * see Documentation/driver-api/media/drivers/dvb-usb.rst for more information + */ + #include "af9005.h" +-#include "af9005-script.h" + #include "mt2060.h" + #include "qt1010.h" + #include <asm/div64.h> ++#include <linux/firmware.h> ++ ++/* Register initialisation script to be extracted from the Windows driver */ ++ ++typedef struct { ++ __le16 reg; ++ u8 pos; ++ u8 len; ++ u8 val; ++ u8 pad; ++} __packed RegDesc; ++ ++#define WIN_DRV_NAME "AF05BDA.sys" ++#define WIN_DRV_VERSION "6.3.2.1" ++#define WIN_DRV_SIZE 133504 ++#define WIN_DRV_SCRIPT_OFFSET 88316 ++#define WIN_DRV_SCRIPT_SIZE 1110 + + struct af9005_fe_state { + struct dvb_usb_device *d; +@@ -804,6 +820,8 @@ static int af9005_fe_init(struct dvb_fro + { + struct af9005_fe_state *state = fe->demodulator_priv; + struct dvb_usb_adapter *adap = fe->dvb->priv; ++ const struct firmware *fw; ++ const RegDesc *script; + int ret, i, scriptlen; + u8 temp, temp0 = 0, temp1 = 0, temp2 = 0; + u8 buf[2]; +@@ -956,37 +974,55 @@ static int af9005_fe_init(struct dvb_fro + if ((ret = af9005_write_ofdm_register(state->d, 0xaefb, 0x01))) + return ret; + +- /* load init script */ +- deb_info("load init script\n"); +- scriptlen = sizeof(script) / sizeof(RegDesc); ++ /* load and validate init script */ ++ deb_info("load init script from Windows driver\n"); ++ ret = request_firmware(&fw, WIN_DRV_NAME, &state->d->udev->dev); ++ if (ret) ++ return ret; ++ BUILD_BUG_ON(sizeof(RegDesc) != 6); ++ if (fw->size != WIN_DRV_SIZE || ++ memcmp(fw->data + WIN_DRV_SCRIPT_OFFSET, ++ "\x80\xa1\x00\x08\x0a\x00", 6) || ++ memcmp(fw->data + WIN_DRV_SCRIPT_OFFSET + WIN_DRV_SCRIPT_SIZE - 6, ++ "\x49\xa3\x00\x06\x02\x00", 6)) { ++ err("%s is invalid - should be version %s, size %u bytes\n", ++ WIN_DRV_NAME, WIN_DRV_VERSION, WIN_DRV_SIZE); ++ ret = -EINVAL; ++ goto fail_release; ++ } ++ ++ script = (const RegDesc *)(fw->data + WIN_DRV_SCRIPT_OFFSET); ++ scriptlen = WIN_DRV_SCRIPT_SIZE / sizeof(RegDesc); + for (i = 0; i < scriptlen; i++) { ++ u16 reg = le16_to_cpu(script[i].reg); + if ((ret = +- af9005_write_register_bits(state->d, script[i].reg, ++ af9005_write_register_bits(state->d, reg, + script[i].pos, + script[i].len, script[i].val))) +- return ret; ++ goto fail_release; + /* save 3 bytes of original fcw */ +- if (script[i].reg == 0xae18) ++ if (reg == 0xae18) + temp2 = script[i].val; +- if (script[i].reg == 0xae19) ++ if (reg == 0xae19) + temp1 = script[i].val; +- if (script[i].reg == 0xae1a) ++ if (reg == 0xae1a) + temp0 = script[i].val; + + /* save original unplug threshold */ +- if (script[i].reg == xd_p_reg_unplug_th) ++ if (reg == xd_p_reg_unplug_th) + state->original_if_unplug_th = script[i].val; +- if (script[i].reg == xd_p_reg_unplug_rf_gain_th) ++ if (reg == xd_p_reg_unplug_rf_gain_th) + state->original_rf_unplug_th = script[i].val; +- if (script[i].reg == xd_p_reg_unplug_dtop_if_gain_th) ++ if (reg == xd_p_reg_unplug_dtop_if_gain_th) + state->original_dtop_if_unplug_th = script[i].val; +- if (script[i].reg == xd_p_reg_unplug_dtop_rf_gain_th) ++ if (reg == xd_p_reg_unplug_dtop_rf_gain_th) + state->original_dtop_rf_unplug_th = script[i].val; + + } + state->original_fcw = + ((u32) temp2 << 16) + ((u32) temp1 << 8) + (u32) temp0; + ++ release_firmware(fw); + + /* save original TOPs */ + deb_info("save original TOPs\n"); +@@ -1066,6 +1102,10 @@ static int af9005_fe_init(struct dvb_fro + + deb_info("profit!\n"); + return 0; ++ ++fail_release: ++ release_firmware(fw); ++ return ret; + } + + static int af9005_fe_sleep(struct dvb_frontend *fe) |